checking in pdp 0.12.4 from http://zwizwa.fartit.com/pd/pdp/pdp-0.12.4.tar.gz

svn path=/trunk/externals/pdp/; revision=4232

27 files changed, 7866 insertions, 0 deletions

diff --git a/scaf/COPYING b/scaf/COPYING
new file mode 100644
index 0000000..7f87ef8
--- /dev/null
+++ b/scaf/COPYING
@@ -0,0 +1,340 @@
+
+		    GNU GENERAL PUBLIC LICENSE
+		       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+                          675 Mass Ave, Cambridge, MA 02139, USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+			    Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
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+the GNU Library General Public License instead.)  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
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+These restrictions translate to certain responsibilities for you if you
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+
+  For example, if you distribute copies of such a program, whether
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+
+  We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
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+
+  Also, for each author's protection and ours, we want to make certain
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+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+		    GNU GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR PDP.LICENSE, DISTRIBUTION AND MODIFICATION
+
+  0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
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+  1. You may copy and distribute verbatim copies of the Program's
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+
+You may charge a fee for the physical act of transferring a copy, and
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+
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+
+These requirements apply to the modified work as a whole.  If
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+
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+Each version is given a distinguishing version number.  If the Program
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+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
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+  10. If you wish to incorporate parts of the Program into other free
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+			    NO WARRANTY
+
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+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
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+
+		     END OF TERMS AND CONDITIONS
+
+	Appendix: How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) 19yy  <name of author>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+    Gnomovision version 69, Copyright (C) 19yy name of author
+    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs.  If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library.  If this is what you want to do, use the GNU Library General
+Public License instead of this License.
diff --git a/scaf/Makefile b/scaf/Makefile
new file mode 100644
index 0000000..d9af670
--- /dev/null
+++ b/scaf/Makefile
@@ -0,0 +1,43 @@
+include Makefile.config
+
+all: pdp_scaf.pd_linux
+
+pdp_scaf_all:
+	make -C include
+	make -C compiler
+	make -C rules
+	make -C pdp
+
+clean:
+	rm -f *~
+	rm -f pdp_scaf.pd_linux
+	make -C include clean
+	make -C compiler clean
+	make -C rules clean
+	make -C pdp clean
+
+mrproper: clean
+	rm -rf configure
+	rm -rf config.status
+	rm -rf config.log
+	rm -rf autom4te.cache
+	#this needs to stay in
+	#rm -rf Makefile.config
+
+pdp_scaf.pd_linux: pdp_scaf_all
+	rm -f pdp_scaf.pd_linux
+	gcc -export_dynamic -shared -o pdp_scaf.pd_linux pdp/*.o $(PDP_CA_LIBS)
+
+install: all
+	install -d $(prefix)/lib/scaf
+	install -m 755 compiler/scafc $(prefix)/bin || echo failed
+	install -m 755 compiler/scafc.pl $(prefix)/lib/scaf || echo failed
+	install -m 644 compiler/kernel.scaf $(prefix)/lib/scaf || echo failed
+	install -m 644 compiler/scafmacro.s $(prefix)/lib/scaf || echo failed
+	install -m 644 compiler/optim.rules $(prefix)/lib/scaf || echo failed
+	install -m 755 rules/carules.scafo $(prefix)/lib/scaf/default.scafo || echo failed
+	#Check if pd is installed in $(prefix)/lib/pd. 
+	#If this fails the pdp_scaf lib and the docs won't be installed. 
+	test -d $(prefix)/lib/pd
+	install -m 755 pdp_scaf.pd_linux $(prefix)/lib/pd/externs
+	install -m 644 doc/*.pd $(prefix)/lib/pd/doc/5.reference
diff --git a/scaf/Makefile.config b/scaf/Makefile.config
new file mode 100644
index 0000000..4faea70
--- /dev/null
+++ b/scaf/Makefile.config
@@ -0,0 +1,30 @@
+# build flags
+
+# define the include paths here if configure can't find them
+# PDP_CFLAGS=-I/somehere/pdp/include
+# PD_CFLAGS=-I/somewhere/pd/src
+
+
+prefix=/usr/local
+PDP_CA_INCLUDE =   -I/home/tom/pd/packet/include   -I/home/tom/pd/packet/scaf/include
+PDP_CA_LIBS = -ldl -lm 
+DEFAULT_RULES_LIB = /usr/local/lib/scaf/default.scafo
+PDP_CA_AFLAGS  = 
+#--gstabs
+PDP_CA_CFLAGS  = -DPD -O2 -funroll-loops -fomit-frame-pointer  -ffast-math \
+    -Wall -W -Wstrict-prototypes -Werror \
+    -Wno-unused -Wno-parentheses -Wno-switch -g $(PDP_CFLAGS) $(PD_CFLAGS) \
+    -DPDP_CA_RULES_LIB=\"$(DEFAULT_RULES_LIB)\"
+# -Wshadow
+
+# compiler and assembler
+#CC = gcc-3.2
+#CC = gcc
+#AS = as
+
+# build rules
+
+.c.o:
+	$(CC) $(PDP_CA_CFLAGS) $(PDP_CA_INCLUDE) $(PDP_CA_DEFS) -o $*.o -c $*.c
+.s.o:
+	$(AS) -o $*.o $*.s $(PDP_CA_AFLAGS)
diff --git a/scaf/Makefile.config.in b/scaf/Makefile.config.in
new file mode 100644
index 0000000..12927d3
--- /dev/null
+++ b/scaf/Makefile.config.in
@@ -0,0 +1,30 @@
+# build flags
+
+# define the include paths here if configure can't find them
+# PDP_CFLAGS=-I/somehere/pdp/include
+# PD_CFLAGS=-I/somewhere/pd/src
+
+
+prefix=@prefix@
+PDP_CA_INCLUDE =  @CPPFLAGS@
+PDP_CA_LIBS = @LIBS@
+DEFAULT_RULES_LIB = @DEFAULT_RULES_LIB@
+PDP_CA_AFLAGS  = 
+#--gstabs
+PDP_CA_CFLAGS  = -DPD -O2 -funroll-loops -fomit-frame-pointer  -ffast-math \
+    -Wall -W -Wstrict-prototypes -Werror \
+    -Wno-unused -Wno-parentheses -Wno-switch -g $(PDP_CFLAGS) $(PD_CFLAGS) \
+    -DPDP_CA_RULES_LIB=\"$(DEFAULT_RULES_LIB)\"
+# -Wshadow
+
+# compiler and assembler
+#CC = gcc-3.2
+#CC = gcc
+#AS = as
+
+# build rules
+
+.c.o:
+	$(CC) $(PDP_CA_CFLAGS) $(PDP_CA_INCLUDE) $(PDP_CA_DEFS) -o $*.o -c $*.c
+.s.o:
+	$(AS) -o $*.o $*.s $(PDP_CA_AFLAGS)
diff --git a/scaf/README b/scaf/README
new file mode 100644
index 0000000..e71d1c9
--- /dev/null
+++ b/scaf/README
@@ -0,0 +1,92 @@
+PDP_SCAF for pdp v0.7
+Cellular Automata modules for PDP
+
+Copyright (c) by Tom Schouten <pdp@zzz.kotnet.org>
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+The GNU Public Licence can be found in the file COPYING
+
+
+------------------------------------------------------------------
+
+This is a pdp extension lib that contains modules for cellular
+automata built on a (very) minimal forth-like virtual system
+(scaf - simple cellular automaton forth) to define update rules. a 
+compiler is included to produce scafo object code that can be 
+dynamically loaded into the pdp_ca module. so it is possible to 
+add/change rules without restarting pd (note however you need to close 
+all lib files before the dynamic loader reloads the lib).  see 
+scaf/README for details.
+
+
+pdp_ca2image and pdp_image2ca are included for conversion between
+CA packets and image packets. (pdp_ca2image produces greyscale
+images)
+
+Have a look at the patches in test/ for some crude docs. The file
+README.scaf contains some more info on the internals.
+
+
+Requirements:
+
+* pd
+* pdp
+* linux
+* perl for the forth compiler
+* an intel/amd processor that supports MMX
+
+
+Building:
+
+./configure
+make
+make install
+
+If you don't have both libraries in the same dir and want to keep
+it that way, hardcode the paths in Makefile.config.in and run 
+configure. You need to do "make install" to install the scaf compiler 
+"scafc" and the default ruleset. This is to be able to load plain 
+(text) rule files and have the default rules loaded when you create
+a pdp_ca object.
+
+Using:
+
+add "-lib <SCAF_DIR>/pdp_scaf" to the pd command line after the 
+"-lib <PDP_DIR>/pdp" part.
+
+
+
+launch pd with the options -lib $PDP_DIR/pdp -path $PDP_DIR/abstractions
+
+Directory structure:
+
+include/	header files
+pdp/		pdp external code
+compiler/	forth system code
+test/		some test patches (cryptic doc)
+rules/		ca rule libraries
+
+
+
+Please let me know if you discover a bug or think something doesn't work 
+right. Code, documentation or example patches are more than welcome of 
+course.
+
+Have Fun,
+
+Tom
+
+last modified: 2003/01/12
diff --git a/scaf/README.scaf b/scaf/README.scaf
new file mode 100644
index 0000000..0035899
--- /dev/null
+++ b/scaf/README.scaf
@@ -0,0 +1,98 @@
+SCAF - simple cellular automaton forth
+
+scaf is a virtual machine / forth environment for binary arithmic 
+tailored to 2D 1 cell neighbourhood cellular automata.
+
+scaf is a compiled language. programs run inside a "feeder"
+(sort of operating system if you want) 
+
+the feeder is responsable for loading/storing CA cells
+from/to memory. data in memory is organized as a scanline
+encoded toroidial bitplane (lsb = left). to simplify the feeder
+and the stack machine, the top left corner of the rectangular grid 
+of pixels will shift down every processing step. this enables
+to keep a cell neighbourhood in a couple of registers.
+
+the stack machine has the following architecture:
+CA stack:		(%esi), TOS: %mm0 (32x2 cells. lsb = top left)
+CA horizon:		(%edi) (64x4 cells. (%edi) = top row. lsb = left)
+
+scratch register:	%mm1, %mm2
+bitmask register:	%mm3 = 0xffffffffffffffff
+
+4 bit counter:		%mm4-%mm7
+
+the stack size / organization is not known to the stack machine. 
+it can be thought of as operating on a 3x3 cell neightbourhood.
+the only purpose of the forth program is to determine the CA local update rule.
+
+the machine is supposed to be very minimal. no looping control.
+no adressing modes. no conditional code. so recursion is not allowed 
+(no way to stop it) there are 9 words to load the cell neigbourhood 
+on the stack. the rest is just logic and stack manips.
+
+the counter can be used for counting neighbourhood cells, like in the
+game of life. the zero test and sign bit can be used for comparisons.
+there are kernel words for loading constants into the counter register,
+and for communication between stack and register.
+
+the horizon is limited to 3x3, however it can be easily extended to
+32x3. extending it further than that would require a redesign of the
+forth + feeder.
+
+
+HOW TO CREATE NEW CA RULES
+
+edit scaf/modules/carules.scaf or create your own source lib and add
+the name to the scaf/modules/Makefile. type make in scaf/modules
+to compile. if you get error messages from the assembler saying things
+like 
+
+	Error: no such instruction: `xxx' 
+
+ or  
+	Error: invalid character '_' in mnemonic
+
+this means there are undefined words in your source file. since not
+all characters are allowed in an asm file, the offending characters are 
+converted to _SOMETHINGELSE_ 
+
+if you are stuck somewhere, just look at the output of scaf.pl on 
+your .scaf file to determine where the problem is.
+
+words that can be accessed from inside pdp_ca have to start with the
+prefix rule_ and have to leave a single item on the data stack (the return
+value) other rules can have all the stack effect you want, but for safety
+reasons they can't be accessed from within pdp_ca.
+
+
+
+FORTH SYSTEM CODE
+	
+the forth system is made up of the following files:
+
+kernel.scaf:	a collection of forth kernel words
+scafmacro.s:	a set of asm macro definitions used in kernel.scaf
+optim.rules:	some substitution rules to eliminate redundant
+		stack manipulations
+
+scaf.pl:	the compiler
+
+scaf.pl is run like this:
+
+scaf.pl -Isystemdir source.scaf
+
+if the -I switch is left out, the current directory is searched
+for the system files. the compiler produces an assembler source
+that includes scafmacro.s on standard output.
+
+the code it produces is relatively fast. it only uses and/or/xor
+and shift mmx instructions. it's not optimal use of silicon but
+it's pretty fast given what's possible. the feeder routine could
+be improved though.
+
+porting to another platform would require a rewrite of scafmacro.s
+the rest can be reused. if the target machine has 64 bit registers
+(or if you can emulate this one using more registers) porting is 
+relatively easy. for larger registers a small change needs to
+be made to the feeder routine in pdp_ca.c
diff --git a/scaf/TODO b/scaf/TODO
new file mode 100644
index 0000000..bbeebec
--- /dev/null
+++ b/scaf/TODO
@@ -0,0 +1,3 @@
+* add decimating to pdp_ca2image
+* clean up library
+* add translation option to pdp_ca (modify so horizontal shifts by 1 are possible)
diff --git a/scaf/compiler/Makefile b/scaf/compiler/Makefile
new file mode 100644
index 0000000..16e82cd
--- /dev/null
+++ b/scaf/compiler/Makefile
@@ -0,0 +1,6 @@
+all:
+
+clean:
+	rm -f *~
+	rm -f *.o
+
diff --git a/scaf/compiler/kernel.scaf b/scaf/compiler/kernel.scaf
new file mode 100644
index 0000000..0bc2788
--- /dev/null
+++ b/scaf/compiler/kernel.scaf
@@ -0,0 +1,130 @@
+(	Pure Data Packet - scaforth kernel.					)
+(	Copyright (c) by Tom Schouten <pdp@zzz.kotnet.org>			)
+(										) 
+(	This program is free software; you can redistribute it and/or modify	)
+(	it under the terms of the GNU General Public License as published by	)
+(	the Free Software Foundation; either version 2 of the License, or	)
+(	[at your option] any later version.					)
+(										) 
+(	This program is distributed in the hope that it will be useful,		)
+(	but WITHOUT ANY WARRANTY; without even the implied warranty of		)
+(	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the		)
+(	GNU General Public License for more details.				)
+(										)
+(	You should have received a copy of the GNU General Public License	)
+(	along with this program; if not, write to the Free Software		)
+(	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.		)
+
+
+
+
+
+(	this file contains the inline words in the scaforth kernel.		)
+(	when a file is compiled to asm, it will consist of word			)
+(	definition asm routines, macros and jmp call ret instructions.		)
+(										)
+(	all words in this file are defined in terms of asm macros		)
+(	defined in scafmacros.s							)
+
+
+
+( stack manip words )
+
+: over dup dropover ;
+
+( neighbourhood cell fetch words )
+
+: @-+ dup dropldTL ;
+: @0+ dup dropldTM ;
+: @++ dup dropldTR ;
+: @-0 dup dropldML ;
+: @00 dup dropldMM ;
+: @+0 dup dropldMR ;
+: @-- dup dropldBL ;
+: @0- dup dropldBM ;
+: @+- dup dropldBR ;
+
+( boolean logic )
+
+: or overor nip ;
+: xor overxor nip ;
+: and overand nip ;
+
+( binary constant loading )
+
+: 1 dup dropone ;
+: 0 dup dropzero ;
+
+( 4,3,2,1 bit add stack to register, leave carry on stack )
+
+: ++++ adb0 adb1 adb2 adb3 ;
+: +++ adb0 adb1 adb2 ;
+: ++ adb0 adb1 ;
+: + adb0 ;
+
+( 4,3,2 bit shifted 1 add )
+
+: ++++<<1 adb1 adb2 adb3 ;
+: +++<<1 adb1 adb2 ;
+: ++<<1 adb1 ;
+
+( 4,3 bit shifted 2 add )
+
+: ++++<<2 adb2 adb3 ;
+: +++<<2 adb2 ;
+
+( 4 bit shifted 3 add )
+
+: ++++<<3 adb3 ;
+
+( 4 bit accumulator access )
+
+: !a0 dupsta0 drop ;
+: !a1 dupsta1 drop ;
+: !a2 dupsta2 drop ;
+: !a3 dupsta3 drop ;
+
+: @a0 dup droplda0 ;
+: @a1 dup droplda1 ;
+: @a2 dup droplda2 ;
+: @a3 dup droplda3 ;
+
+( 4,3,2,1 bit accumulator zero tests )
+
+: ?anz dup dropisnonzero4 ;
+: ?anz4 dup dropisnonzero4 ;
+: ?anz3 dup dropisnonzero3 ;
+: ?anz2 dup dropisnonzero2 ;
+: ?anz1 dup dropisnonzero1 ;
+
+( load constants into accumulator )
+
+: a0 a0000 ;
+: a-0 a0000 ;
+: a+0 a0000 ;
+: a+1 a0001 ;
+: a+2 a0010 ;
+: a+3 a0011 ;
+: a+4 a0100 ;
+: a+5 a0101 ;
+: a+6 a0110 ;
+: a+7 a0111 ;
+
+: a+8 a1000 ;
+: a+9 a1001 ;
+: a+10 a1010 ;
+: a+11 a1011 ;
+: a+12 a1100 ;
+: a+13 a1101 ;
+: a+14 a1110 ;
+: a+15 a1111 ;
+
+: a-8 a1000 ;
+: a-7 a1001 ;
+: a-6 a1010 ;
+: a-5 a1011 ;
+: a-4 a1100 ;
+: a-3 a1101 ;
+: a-2 a1110 ;
+: a-1 a1111 ;
+
diff --git a/scaf/compiler/optim.rules b/scaf/compiler/optim.rules
new file mode 100644
index 0000000..282caf4
--- /dev/null
+++ b/scaf/compiler/optim.rules
@@ -0,0 +1,74 @@
+#    Pure Data Packet - scaf optimization rules.
+#    Copyright (c) by Tom Schouten <pdp@zzz.kotnet.org>
+# 
+#    This program is free software; you can redistribute it and/or modify
+#    it under the terms of the GNU General Public License as published by
+#    the Free Software Foundation; either version 2 of the License, or
+#    (at your option) any later version.
+# 
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU General Public License for more details.
+# 
+#    You should have received a copy of the GNU General Public License
+#    along with this program; if not, write to the Free Software
+#    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+
+# this file contains scaf source optimization rules for scaf compiler
+# applied after kernel word inlining and before compilation to asm
+
+# one rule that's not in here, and is the responsability for the
+# final compilation step: "word ;" is "jmp word" instead of "call word ret"
+
+# TODO: think about order!
+
+# no discrimination between pre inline and post inline optimization ops yet
+
+# pre inline optimizations
+
+"over xor" 	-> "overxor" 
+"over and"	-> "overand"
+"over or"	-> "overor"
+
+"drop 1"	-> "dropone"
+"drop 0"	-> "dropzero"
+"over add"	-> "overadd"
+"over addc"	-> "overaddc"
+
+"dup !a0"	-> "dupsta0"	
+"dup !a1"	-> "dupsta1"	
+"dup !a2"	-> "dupsta2"	
+"dup !a3"	-> "dupsta3"
+
+"drop @a0"	-> "droplda0"
+"drop @a1"	-> "droplda1"
+"drop @a2"	-> "droplda2"
+"drop @a3"	-> "droplda3"
+
+"drop ?anz"	-> "dropisnonzero4"
+"drop ?anz4"	-> "dropisnonzero4"
+"drop ?anz3"	-> "dropisnonzero3"
+"drop ?anz2"	-> "dropisnonzero2"
+"drop ?anz1"	-> "dropisnonzero1"
+
+"drop @-+"	-> "dropldTL"
+"drop @0+"	-> "dropldTM"
+"drop @++"	-> "dropldTR"
+"drop @-0"	-> "dropldML"
+"drop @00"	-> "dropldMM"
+"drop @+0"	-> "dropldMR"
+"drop @--"	-> "dropldBL"
+"drop @0-"	-> "dropldBM"
+"drop @+-"	-> "dropldBR"
+
+
+# post inline optimizations
+
+"dup drop"	-> ""
+"swap drop"	-> "nip"
+"dup swap"	-> "dup"
+"drop dup"	-> "dropdup"
+"drop over"	-> "dropover"
+"nip dup"	-> "nipdup"
diff --git a/scaf/compiler/scafc b/scaf/compiler/scafc
new file mode 100755
index 0000000..ae800e5
--- /dev/null
+++ b/scaf/compiler/scafc
@@ -0,0 +1,44 @@
+#!/bin/sh
+#scaf->scafo compiler
+
+if test "xx$1" == "xx"
+then
+	echo
+	echo "scaf rules compiler"
+	echo "usage:"
+	echo "    scafc source [dest]"
+	echo
+	exit 0
+fi
+
+if test "xx$2" == "xx"
+then
+	DEST=$1o
+else
+	DEST=$2
+fi
+
+if ! test -f $1
+then
+	echo "source module $1 not found."
+	exit 1
+fi
+
+SCAFDIR=`dirname $0`
+if ! test -f $SCAFDIR/scafc.pl;
+then
+	SCAFDIR=`dirname $SCAFDIR`
+	SCAFDIR="$SCAFDIR/lib/scaf"
+	if ! test -f $SCAFDIR/scafc.pl
+	then
+		echo "scaf library not found in $SCAFDIR"
+		exit 1
+	fi
+fi
+
+TMP_S=`tempfile -s .s`
+$SCAFDIR/scafc.pl -I$SCAFDIR $1 > $TMP_S \
+&& gcc -export_dynamic -shared -o $DEST $TMP_S \
+&& strip --strip-unneeded $DEST \
+&& rm $TMP_S \
+|| exit 1
diff --git a/scaf/compiler/scafc.pl b/scaf/compiler/scafc.pl
new file mode 100755
index 0000000..ee6b969
--- /dev/null
+++ b/scaf/compiler/scafc.pl
@@ -0,0 +1,269 @@
+#!/usr/bin/perl
+
+#    Pure Data Packet - scafc: scaf compiler.
+#    Copyright (c) by Tom Schouten <pdp@zzz.kotnet.org>
+# 
+#    This program is free software; you can redistribute it and/or modify
+#    it under the terms of the GNU General Public License as published by
+#    the Free Software Foundation; either version 2 of the License, or
+#    (at your option) any later version.
+# 
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU General Public License for more details.
+# 
+#    You should have received a copy of the GNU General Public License
+#    along with this program; if not, write to the Free Software
+#    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+#
+
+# set this if you want to enable/disable optimizing
+
+$optimize = 1;
+
+
+# this parses a single scaf line
+# it is not very intelligent. only looks for 1 def on a line
+# todo: change later so it can read multiple lines
+
+
+sub remove_illegal_characters {
+    my $line = shift;
+    $$line =~ s/\+/_PLUS_/g;
+    $$line =~ s/-/_MINUS_/g;
+    $$line =~ s/\@/_AT_/g;
+    $$line =~ s/:/_COLON_/g;
+    $$line =~ s/\?/_QMARK_/g;
+    $$line =~ s/<</_SHIFT_/g;
+    $$line =~ s/</_ST_/g;
+    $$line =~ s/>/_GT_/g;
+    $$line =~ s/=/_EQ_/g;
+    $$line =~ s/\(/_OPEN_/g;
+    $$line =~ s/\)/_CLOSE_/g;
+}
+
+sub parse_scaf_line {
+    my $word, $def, $sub;
+    shift;
+
+    # this transforms the source into a parsed assembly like form
+    # a word label: "<word>:<ret>"
+    # a word definition line "<tab><word><ret>"
+    # last def = <ret><ret>
+
+    # dont process if line doesn't have a def
+
+    # first remove comments
+    s/\(\s+(\S+\s+)*?\)//g;
+
+    if (m/:\s+/){
+
+	# separate word and definition
+	m/:\s+(\S+)\s+(.*)/;
+	$word = $1;
+	$def = $2;
+
+	# remove illegal characters;
+	remove_illegal_characters \$word;
+	remove_illegal_characters \$def;
+
+	# format definition in asm style
+	$def =~ s/(\S+)(\s*)/\t$1\n/g;
+
+	# replace ; by r
+	$def =~ s/\s+;\s*/\n\tr\n/;
+
+	# put word: def into one string
+	$sub = "$word:\n$def\n";
+
+	# debug
+	#$sub =~ s/\t/<tab>/g;
+	#$sub =~ s/\n/<ret>\n/g;
+	#print "$sub";
+
+	return $sub;
+
+    }
+
+};
+
+
+
+# load and parse scaf source file
+sub load_source {
+    my $filename = shift;
+    open(SOURCE, $filename) or die "Can't locate source module $filename\n";
+    my @parsedsource;
+    while (<SOURCE>){
+	my $sub = parse_scaf_line $_;
+	if ($sub) {
+	    push @parsedsource, ($sub);
+	}
+
+    }
+    close(SOURCE);
+    return @parsedsource;
+
+}
+
+# this routine parses the optimization rules
+sub load_optim {
+    my $filename = shift;
+    open(OPTIM, $filename) or die "Can't locate optimization rule file $filename\n";
+    my @parsedoptim;
+    while (<OPTIM>){
+	unless (m/\A\#/){
+
+	    if (m/\"\s*(.*?)\s*\".*?\"\s*(.*?)\s*\"/)
+	      {
+		  my $source = $1;
+		  my $dest = $2;
+
+		  $source =~ s/\s+/\n\t/;
+		  $dest =~ s/\s+/\n\t/;
+		  $source = "\t$source\n";
+		  $dest = "\t$dest\n";
+
+		  remove_illegal_characters \$source;
+		  remove_illegal_characters \$dest;
+
+		  push @parsedoptim, ("$source:$dest");
+	      }
+	}
+    }
+    close(OPTIM);
+
+    return @parsedoptim;
+
+
+}
+
+
+
+# inline one parsed source's definitions into another parsed source's
+sub inline_defs {
+    my $dest = shift;
+    my $source = shift;
+
+    #print @$dest;
+    #print @$source;
+
+
+    # loop over file with inline defs
+    foreach (@$source) {
+	#print "<SUB>$_</SUB>\n";
+	m/(\S+):\n(.*)\tr\n/s;
+
+	my $def = "\t$1\n";
+	my $body = $2;
+
+	#print "<DEF>$def</DEF>\n";
+	#print "<BODY>$body</BODY>\n";
+
+	foreach (@$dest) {
+	    s/$def/$body/g;
+	}
+	
+    }
+
+}
+
+# this changes <WORD> to c <WORD> or j <WORD> all defined words
+# the undefined words are supposed to be asm macros
+sub call_defs {
+    my $dest = shift;
+
+    foreach (@$dest){
+	m/(\S+):\n/s;
+	my $word = $1;
+	foreach (@$dest){
+	    s/\t$word\n\tr\n/\tj $word\n/sg;
+	    s/\t$word\n/\tc $word\n/sg;
+	}
+    }
+}
+
+# substitue word sequences in dest using optim table
+sub subst_optim {
+    my $dest = shift;
+    my $optim = shift;
+    foreach (@$optim){
+	m/(.*?):(.*)/s;
+	my $key = $1;
+	my $subst = $2;
+	
+	foreach (@$dest){
+	    s/$key/$subst/sg;
+	}
+    }
+}
+	
+# add directives to produce global symbols
+# global symbols need to start with carule_
+sub global_syms {
+    my $source = shift;
+    foreach (@$source){
+	s/rule_(\S+):\n/.globl\trule_$1\n.type\trule_$1,\@function\nrule_$1:\n/sg;
+    }
+}
+
+# create an array with names for bookkeeping
+sub name_array {
+    my @namearray;
+    my $source = shift;
+    push @namearray, (".globl rulenames\nrulenames:\n");
+    foreach (@$source){
+	if (m/rule_(\S+):/s){
+	    push @namearray, (".asciz\t\"$1\"\n");
+	}
+    }
+    push @namearray, (".byte\t0\n");
+    return @namearray;
+
+}
+
+# main program body
+
+$dir=".";
+
+$source = "-";
+
+
+# parse command line
+foreach (@ARGV){
+    if (m/-I(.*)/) {
+	$dir = $1;
+    }
+    else {
+	$source = $_;
+    }
+}
+
+$kernel = "$dir/kernel.scaf";
+$macro  = "$dir/scafmacro.s";
+$rules  = "$dir/optim.rules";
+
+
+
+# load files
+@psource = load_source $source;
+@pkernel = load_source $kernel;
+@poptim = load_optim $rules;
+
+
+# substitute kernel defs in source
+if ($optimize) {subst_optim \@psource, \@poptim;}
+inline_defs \@psource, \@pkernel;
+
+if ($optimize) {subst_optim \@psource, \@poptim;}
+
+call_defs \@psource;
+global_syms \@psource;
+@pnames = name_array \@psource;
+
+# print out asm file
+print ".include \"$macro\"\n\n";
+print @psource;
+print @pnames;
+
diff --git a/scaf/compiler/scafmacro.s b/scaf/compiler/scafmacro.s
new file mode 100644
index 0000000..04e6537
--- /dev/null
+++ b/scaf/compiler/scafmacro.s
@@ -0,0 +1,487 @@
+	#    Pure Data Packet - scaf assembler macros.
+	#    Copyright (c) by Tom Schouten <pdp@zzz.kotnet.org>
+	# 
+	#    This program is free software; you can redistribute it and/or modify
+	#    it under the terms of the GNU General Public License as published by
+	#    the Free Software Foundation; either version 2 of the License, or
+	#    (at your option) any later version.
+	# 
+	#    This program is distributed in the hope that it will be useful,
+	#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+	#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	#    GNU General Public License for more details.
+	# 
+	#    You should have received a copy of the GNU General Public License
+	#    along with this program; if not, write to the Free Software
+	#    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+	#
+
+
+	# this file contains pure asm macros. it is to be included before assembly
+	# after scaforth.pl has processed the .scaf file
+
+	# *************************** JMP CALL RET **************************************
+	# j c r
+	
+	.macro j address
+	jmp \address
+	.endm
+
+	.macro c address
+	call \address
+	.endm
+
+	.macro r
+	ret
+	.endm
+		
+
+	# *************************** CA CELL ACCESS MACROS *****************************
+	# dropldTL - dropldBR
+
+	# shift / load rectangle macros:
+
+	# shift rectangle horizontal	
+	# result is in reg1
+	.macro shift reg1 reg2 count
+	psllq $(16-\count), \reg1
+	psrlq $(16+\count), \reg2
+	psrlq $32, \reg1
+	psllq $32, \reg2
+	por \reg2, \reg1
+	.endm
+
+	.macro ldtop reg1 reg2
+	movq (%edi), \reg1
+	movq 8(%edi), \reg2
+	.endm
+
+	.macro ldcenter reg1 reg2
+	movq 8(%edi), \reg1
+	movq 16(%edi), \reg2
+	.endm
+
+	.macro ldbottom reg1 reg2
+	movq 16(%edi), \reg1
+	movq 24(%edi), \reg2
+	.endm
+	
+
+	# dropld from top row
+
+	# dropld the top left square
+	.macro dropldTL
+	ldtop %mm0, %mm1
+	shift %mm0, %mm1, -1
+	.endm
+
+	# dropld the top mid square
+	.macro dropldTM
+	ldtop %mm0, %mm1
+	shift %mm0, %mm1, 0
+	.endm
+
+	# dropld the top right square
+	.macro dropldTR
+	ldtop %mm0, %mm1
+	shift %mm0, %mm1, 1
+	.endm
+
+
+	
+	# dropld from center row
+
+	# dropld the mid left square
+	.macro dropldML
+	ldcenter %mm0, %mm1
+	shift %mm0, %mm1, -1
+	.endm
+
+	# dropld the mid mid square
+	.macro dropldMM
+	ldcenter %mm0, %mm1
+	shift %mm0, %mm1, 0
+	.endm
+
+	# dropld the mid right square
+	.macro dropldMR
+	ldcenter %mm0, %mm1
+	shift %mm0, %mm1, 1
+	.endm
+
+
+	
+
+			
+	# dropld from bottom row
+
+	# dropld the bottom left square
+	.macro dropldBL
+	ldbottom %mm0, %mm1
+	shift %mm0, %mm1, -1
+	.endm
+
+	# dropld the bottom mid square
+	.macro dropldBM
+	ldbottom %mm0, %mm1
+	shift %mm0, %mm1, 0
+	.endm
+
+	# dropld the bottom right square
+	.macro dropldBR
+	ldbottom %mm0, %mm1
+	shift %mm0, %mm1, 1
+	.endm
+
+
+
+	# *************************** CA STACK MANIP MACROS *****************************
+	# these are the only asm macros that have a stack effect other than
+	# just replacing the TOS
+	#
+	# dup drop dropdup swap nip dropover
+
+	.macro dup
+	lea -8(%esi), %esi
+	movq %mm0, (%esi)	
+	.endm
+
+	.macro drop
+	movq (%esi), %mm0
+	lea 8(%esi), %esi
+	.endm
+
+	.macro dropdup
+	movq (%esi), %mm0
+	.endm
+
+	.macro nipdup
+	movq %mm0, (%esi)
+	.endm
+
+	.macro swap
+	movq (%esi), %mm1
+	movq %mm0, (%esi)
+	movq %mm1, %mm0
+	.endm
+
+	.macro nip
+	lea 8(%esi), %esi
+	.endm
+
+	.macro dropover
+	movq 8(%esi), %mm0
+	.endm
+
+
+	# *************************** CA BOOLEAN LOGIC MACROS *****************************
+	# overxor overand overor not
+	
+	.macro overxor
+	pxor (%esi), %mm0
+	.endm	
+
+	.macro overand
+	pand (%esi), %mm0
+	.endm	
+
+	.macro overor
+	por (%esi), %mm0
+	.endm	
+
+	.macro not
+	pxor %mm3, %mm0
+	.endm
+	
+
+
+	# *************************** CONSTANTS  *****************************
+	# dropzero dropone 
+
+	.macro dropzero
+	pxor %mm0, %mm0
+	.endm
+
+	.macro dropone
+	pcmpeqw %mm0, %mm0
+	.endm
+	
+	
+	# *************************** 4 BIT REG ACCESS  ******************************
+	# dupsta0 - dupsta4   droplda0 - droplda4
+	# store bit in accumulator
+
+	# bit store
+	
+	.macro dupsta0
+	movq %mm0, %mm4
+	.endm
+
+	.macro dupsta1
+	movq %mm0, %mm5
+	.endm
+	
+	.macro dupsta2
+	movq %mm0, %mm6
+	.endm
+	
+	.macro dupsta3
+	movq %mm0, %mm7
+	.endm
+
+	# load bit from accumulator
+
+	.macro droplda0
+	movq %mm4, %mm0
+	.endm
+
+	.macro droplda1
+	movq %mm5, %mm0
+	.endm
+	
+	.macro droplda2
+	movq %mm6, %mm0
+	.endm
+
+	.macro droplda3
+	movq %mm7, %mm0
+	.endm
+
+
+	# *************************** LOAD 4 BIT CONSTANT IN REG  ******************************
+	# a0000 - a1111
+	
+	.macro ldbit0 value
+	.ifeq \value
+	movq %mm1, %mm4
+	.else
+	movq %mm3, %mm4
+	.endif
+	.endm
+
+	.macro ldbit1 value
+	.ifeq \value
+	movq %mm1, %mm5
+	.else
+	movq %mm3, %mm5
+	.endif
+	.endm
+
+	.macro ldbit2 value
+	.ifeq \value
+	movq %mm1, %mm6
+	.else
+	movq %mm3, %mm6
+	.endif
+	.endm
+
+	.macro ldbit3 value
+	.ifeq \value
+	movq %mm1, %mm7
+	.else
+	movq %mm3, %mm7
+	.endif
+	.endm
+
+	.macro ldbin b3 b2 b1 b0
+	pxor %mm1, %mm1
+	ldbit0 \b0
+	ldbit1 \b1
+	ldbit2 \b2
+	ldbit3 \b3
+	.endm
+	
+	.macro a0000
+	ldbin 0 0 0 0
+	.endm
+
+	.macro a0001
+	ldbin 0 0 0 1
+	.endm
+
+	.macro a0010
+	ldbin 0 0 1 0
+	.endm
+
+	.macro a0011
+	ldbin 0 0 1 1
+	.endm
+
+	.macro a0100
+	ldbin 0 1 0 0
+	.endm
+
+	.macro a0101
+	ldbin 0 1 0 1
+	.endm
+
+	.macro a0110
+	ldbin 0 1 1 0
+	.endm
+
+	.macro a0111
+	ldbin 0 1 1 1
+	.endm
+
+	.macro a1000
+	ldbin 1 0 0 0
+	.endm
+
+	.macro a1001
+	ldbin 1 0 0 1
+	.endm
+
+	.macro a1010
+	ldbin 1 0 1 0
+	.endm
+
+	.macro a1011
+	ldbin 1 0 1 1
+	.endm
+
+	.macro a1100
+	ldbin 1 1 0 0
+	.endm
+
+	.macro a1101
+	ldbin 1 1 0 1
+	.endm
+
+	.macro a1110
+	ldbin 1 1 1 0
+	.endm
+
+	.macro a1111
+	ldbin 1 1 1 1
+	.endm
+
+	
+	
+		
+	# *************************** 4 BIT COUNTER  ******************************
+	# adds TOS to bit of counter and returns carry in TOS
+	#
+	# adb0 - adb3
+
+
+	.macro adb0
+	movq %mm4, %mm2
+	pxor %mm0, %mm4
+	pand %mm2, %mm0
+	.endm
+
+	.macro adb1
+	movq %mm5, %mm2
+	pxor %mm0, %mm5
+	pand %mm2, %mm0
+	.endm
+
+	.macro adb2
+	movq %mm6, %mm2
+	pxor %mm0, %mm6
+	pand %mm2, %mm0
+	.endm
+
+	.macro adb3
+	movq %mm7, %mm2
+	pxor %mm0, %mm7
+	pand %mm2, %mm0
+	.endm
+
+
+	# *************************** ACCUMULATOR TESTS ***************************
+	# dropisnonzero4 - dropisnonzero1
+
+	.macro dropisnonzero4
+	movq %mm4, %mm0
+	por %mm5, %mm0
+	por %mm6, %mm0
+	por %mm7, %mm0
+	.endm
+	
+	.macro dropisnonzero3
+	movq %mm4, %mm0
+	por %mm5, %mm0
+	por %mm6, %mm0
+	.endm
+	
+	.macro dropisnonzero2
+	movq %mm4, %mm0
+	por %mm5, %mm0
+	.endm
+	
+	.macro dropisnonzero1
+	movq %mm4, %mm0
+	.endm
+	
+
+	# *************************** REGISTER SHIFT OPERATIONS **********************
+	# shift and leave shifted out byte on stack
+	# rotate trough top of stack
+
+	.macro dropshiftright
+	movq %mm4, %mm0
+	movq %mm5, %mm4	
+	movq %mm6, %mm5	
+	movq %mm7, %mm6
+	pxor %mm7, %mm7
+	.endm
+
+	.macro dropshiftleft
+	movq %mm7, %mm0
+	movq %mm6, %mm7	
+	movq %mm5, %mm6	
+	movq %mm4, %mm5
+	pxor %mm4, %mm4
+	.endm
+
+	.macro dropshiftrighta
+	movq %mm4, %mm0
+	movq %mm5, %mm4	
+	movq %mm6, %mm5	
+	movq %mm7, %mm6
+	.endm
+
+	.macro rotateright
+	movq %mm4, %mm1
+	movq %mm5, %mm4	
+	movq %mm6, %mm5	
+	movq %mm7, %mm6
+	movq %mm1, %mm7
+	.endm
+
+	.macro rotateleft
+	movq %mm7, %mm1
+	movq %mm6, %mm7	
+	movq %mm5, %mm6	
+	movq %mm4, %mm5
+	movq %mm1, %mm4
+	.endm
+
+	.macro rotaterightstack
+	movq %mm0, %mm1
+	movq %mm4, %mm0
+	movq %mm5, %mm4	
+	movq %mm6, %mm5	
+	movq %mm7, %mm6
+	movq %mm1, %mm7
+	.endm
+
+	.macro rotateleftstack
+	movq %mm0, %mm1
+	movq %mm7, %mm0
+	movq %mm6, %mm7	
+	movq %mm5, %mm6	
+	movq %mm4, %mm5
+	movq %mm1, %mm4
+	.endm
+
+	# *************************** OTHER REGISTER OPERATIONS **********************
+	# anot :	 complement reg (can be used to implement subtraction)
+
+	.macro anot
+	pxor %mm3, %mm4
+	pxor %mm3, %mm5
+	pxor %mm3, %mm6
+	pxor %mm3, %mm7
+	.endm
diff --git a/scaf/configure b/scaf/configure
new file mode 100755
index 0000000..9e19e2d
--- /dev/null
+++ b/scaf/configure
@@ -0,0 +1,4124 @@
+#! /bin/sh
+# Guess values for system-dependent variables and create Makefiles.
+# Generated by GNU Autoconf 2.59.
+#
+# Copyright (C) 2003 Free Software Foundation, Inc.
+# This configure script is free software; the Free Software Foundation
+# gives unlimited permission to copy, distribute and modify it.
+## --------------------- ##
+## M4sh Initialization.  ##
+## --------------------- ##
+
+# Be Bourne compatible
+if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then
+  emulate sh
+  NULLCMD=:
+  # Zsh 3.x and 4.x performs word splitting on ${1+"$@"}, which
+  # is contrary to our usage.  Disable this feature.
+  alias -g '${1+"$@"}'='"$@"'
+elif test -n "${BASH_VERSION+set}" && (set -o posix) >/dev/null 2>&1; then
+  set -o posix
+fi
+DUALCASE=1; export DUALCASE # for MKS sh
+
+# Support unset when possible.
+if ( (MAIL=60; unset MAIL) || exit) >/dev/null 2>&1; then
+  as_unset=unset
+else
+  as_unset=false
+fi
+
+
+# Work around bugs in pre-3.0 UWIN ksh.
+$as_unset ENV MAIL MAILPATH
+PS1='$ '
+PS2='> '
+PS4='+ '
+
+# NLS nuisances.
+for as_var in \
+  LANG LANGUAGE LC_ADDRESS LC_ALL LC_COLLATE LC_CTYPE LC_IDENTIFICATION \
+  LC_MEASUREMENT LC_MESSAGES LC_MONETARY LC_NAME LC_NUMERIC LC_PAPER \
+  LC_TELEPHONE LC_TIME
+do
+  if (set +x; test -z "`(eval $as_var=C; export $as_var) 2>&1`"); then
+    eval $as_var=C; export $as_var
+  else
+    $as_unset $as_var
+  fi
+done
+
+# Required to use basename.
+if expr a : '\(a\)' >/dev/null 2>&1; then
+  as_expr=expr
+else
+  as_expr=false
+fi
+
+if (basename /) >/dev/null 2>&1 && test "X`basename / 2>&1`" = "X/"; then
+  as_basename=basename
+else
+  as_basename=false
+fi
+
+
+# Name of the executable.
+as_me=`$as_basename "$0" ||
+$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
+	 X"$0" : 'X\(//\)$' \| \
+	 X"$0" : 'X\(/\)$' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X/"$0" |
+    sed '/^.*\/\([^/][^/]*\)\/*$/{ s//\1/; q; }
+  	  /^X\/\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\/\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+
+
+# PATH needs CR, and LINENO needs CR and PATH.
+# Avoid depending upon Character Ranges.
+as_cr_letters='abcdefghijklmnopqrstuvwxyz'
+as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
+as_cr_Letters=$as_cr_letters$as_cr_LETTERS
+as_cr_digits='0123456789'
+as_cr_alnum=$as_cr_Letters$as_cr_digits
+
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+  echo "#! /bin/sh" >conf$$.sh
+  echo  "exit 0"   >>conf$$.sh
+  chmod +x conf$$.sh
+  if (PATH="/nonexistent;."; conf$$.sh) >/dev/null 2>&1; then
+    PATH_SEPARATOR=';'
+  else
+    PATH_SEPARATOR=:
+  fi
+  rm -f conf$$.sh
+fi
+
+
+  as_lineno_1=$LINENO
+  as_lineno_2=$LINENO
+  as_lineno_3=`(expr $as_lineno_1 + 1) 2>/dev/null`
+  test "x$as_lineno_1" != "x$as_lineno_2" &&
+  test "x$as_lineno_3"  = "x$as_lineno_2"  || {
+  # Find who we are.  Look in the path if we contain no path at all
+  # relative or not.
+  case $0 in
+    *[\\/]* ) as_myself=$0 ;;
+    *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break
+done
+
+       ;;
+  esac
+  # We did not find ourselves, most probably we were run as `sh COMMAND'
+  # in which case we are not to be found in the path.
+  if test "x$as_myself" = x; then
+    as_myself=$0
+  fi
+  if test ! -f "$as_myself"; then
+    { echo "$as_me: error: cannot find myself; rerun with an absolute path" >&2
+   { (exit 1); exit 1; }; }
+  fi
+  case $CONFIG_SHELL in
+  '')
+    as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in /bin$PATH_SEPARATOR/usr/bin$PATH_SEPARATOR$PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for as_base in sh bash ksh sh5; do
+	 case $as_dir in
+	 /*)
+	   if ("$as_dir/$as_base" -c '
+  as_lineno_1=$LINENO
+  as_lineno_2=$LINENO
+  as_lineno_3=`(expr $as_lineno_1 + 1) 2>/dev/null`
+  test "x$as_lineno_1" != "x$as_lineno_2" &&
+  test "x$as_lineno_3"  = "x$as_lineno_2" ') 2>/dev/null; then
+	     $as_unset BASH_ENV || test "${BASH_ENV+set}" != set || { BASH_ENV=; export BASH_ENV; }
+	     $as_unset ENV || test "${ENV+set}" != set || { ENV=; export ENV; }
+	     CONFIG_SHELL=$as_dir/$as_base
+	     export CONFIG_SHELL
+	     exec "$CONFIG_SHELL" "$0" ${1+"$@"}
+	   fi;;
+	 esac
+       done
+done
+;;
+  esac
+
+  # Create $as_me.lineno as a copy of $as_myself, but with $LINENO
+  # uniformly replaced by the line number.  The first 'sed' inserts a
+  # line-number line before each line; the second 'sed' does the real
+  # work.  The second script uses 'N' to pair each line-number line
+  # with the numbered line, and appends trailing '-' during
+  # substitution so that $LINENO is not a special case at line end.
+  # (Raja R Harinath suggested sed '=', and Paul Eggert wrote the
+  # second 'sed' script.  Blame Lee E. McMahon for sed's syntax.  :-)
+  sed '=' <$as_myself |
+    sed '
+      N
+      s,$,-,
+      : loop
+      s,^\(['$as_cr_digits']*\)\(.*\)[$]LINENO\([^'$as_cr_alnum'_]\),\1\2\1\3,
+      t loop
+      s,-$,,
+      s,^['$as_cr_digits']*\n,,
+    ' >$as_me.lineno &&
+  chmod +x $as_me.lineno ||
+    { echo "$as_me: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&2
+   { (exit 1); exit 1; }; }
+
+  # Don't try to exec as it changes $[0], causing all sort of problems
+  # (the dirname of $[0] is not the place where we might find the
+  # original and so on.  Autoconf is especially sensible to this).
+  . ./$as_me.lineno
+  # Exit status is that of the last command.
+  exit
+}
+
+
+case `echo "testing\c"; echo 1,2,3`,`echo -n testing; echo 1,2,3` in
+  *c*,-n*) ECHO_N= ECHO_C='
+' ECHO_T='	' ;;
+  *c*,*  ) ECHO_N=-n ECHO_C= ECHO_T= ;;
+  *)       ECHO_N= ECHO_C='\c' ECHO_T= ;;
+esac
+
+if expr a : '\(a\)' >/dev/null 2>&1; then
+  as_expr=expr
+else
+  as_expr=false
+fi
+
+rm -f conf$$ conf$$.exe conf$$.file
+echo >conf$$.file
+if ln -s conf$$.file conf$$ 2>/dev/null; then
+  # We could just check for DJGPP; but this test a) works b) is more generic
+  # and c) will remain valid once DJGPP supports symlinks (DJGPP 2.04).
+  if test -f conf$$.exe; then
+    # Don't use ln at all; we don't have any links
+    as_ln_s='cp -p'
+  else
+    as_ln_s='ln -s'
+  fi
+elif ln conf$$.file conf$$ 2>/dev/null; then
+  as_ln_s=ln
+else
+  as_ln_s='cp -p'
+fi
+rm -f conf$$ conf$$.exe conf$$.file
+
+if mkdir -p . 2>/dev/null; then
+  as_mkdir_p=:
+else
+  test -d ./-p && rmdir ./-p
+  as_mkdir_p=false
+fi
+
+as_executable_p="test -f"
+
+# Sed expression to map a string onto a valid CPP name.
+as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
+
+# Sed expression to map a string onto a valid variable name.
+as_tr_sh="eval sed 'y%*+%pp%;s%[^_$as_cr_alnum]%_%g'"
+
+
+# IFS
+# We need space, tab and new line, in precisely that order.
+as_nl='
+'
+IFS=" 	$as_nl"
+
+# CDPATH.
+$as_unset CDPATH
+
+
+# Name of the host.
+# hostname on some systems (SVR3.2, Linux) returns a bogus exit status,
+# so uname gets run too.
+ac_hostname=`(hostname || uname -n) 2>/dev/null | sed 1q`
+
+exec 6>&1
+
+#
+# Initializations.
+#
+ac_default_prefix=/usr/local
+ac_config_libobj_dir=.
+cross_compiling=no
+subdirs=
+MFLAGS=
+MAKEFLAGS=
+SHELL=${CONFIG_SHELL-/bin/sh}
+
+# Maximum number of lines to put in a shell here document.
+# This variable seems obsolete.  It should probably be removed, and
+# only ac_max_sed_lines should be used.
+: ${ac_max_here_lines=38}
+
+# Identity of this package.
+PACKAGE_NAME=
+PACKAGE_TARNAME=
+PACKAGE_VERSION=
+PACKAGE_STRING=
+PACKAGE_BUGREPORT=
+
+ac_unique_file="pdp/pdp_ca_system.c"
+# Factoring default headers for most tests.
+ac_includes_default="\
+#include <stdio.h>
+#if HAVE_SYS_TYPES_H
+# include <sys/types.h>
+#endif
+#if HAVE_SYS_STAT_H
+# include <sys/stat.h>
+#endif
+#if STDC_HEADERS
+# include <stdlib.h>
+# include <stddef.h>
+#else
+# if HAVE_STDLIB_H
+#  include <stdlib.h>
+# endif
+#endif
+#if HAVE_STRING_H
+# if !STDC_HEADERS && HAVE_MEMORY_H
+#  include <memory.h>
+# endif
+# include <string.h>
+#endif
+#if HAVE_STRINGS_H
+# include <strings.h>
+#endif
+#if HAVE_INTTYPES_H
+# include <inttypes.h>
+#else
+# if HAVE_STDINT_H
+#  include <stdint.h>
+# endif
+#endif
+#if HAVE_UNISTD_H
+# include <unistd.h>
+#endif"
+
+ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC EXEEXT OBJEXT CPP EGREP PDP_CONFIG DEFAULT_RULES_LIB LIBOBJS LTLIBOBJS'
+ac_subst_files=''
+
+# Initialize some variables set by options.
+ac_init_help=
+ac_init_version=false
+# The variables have the same names as the options, with
+# dashes changed to underlines.
+cache_file=/dev/null
+exec_prefix=NONE
+no_create=
+no_recursion=
+prefix=NONE
+program_prefix=NONE
+program_suffix=NONE
+program_transform_name=s,x,x,
+silent=
+site=
+srcdir=
+verbose=
+x_includes=NONE
+x_libraries=NONE
+
+# Installation directory options.
+# These are left unexpanded so users can "make install exec_prefix=/foo"
+# and all the variables that are supposed to be based on exec_prefix
+# by default will actually change.
+# Use braces instead of parens because sh, perl, etc. also accept them.
+bindir='${exec_prefix}/bin'
+sbindir='${exec_prefix}/sbin'
+libexecdir='${exec_prefix}/libexec'
+datadir='${prefix}/share'
+sysconfdir='${prefix}/etc'
+sharedstatedir='${prefix}/com'
+localstatedir='${prefix}/var'
+libdir='${exec_prefix}/lib'
+includedir='${prefix}/include'
+oldincludedir='/usr/include'
+infodir='${prefix}/info'
+mandir='${prefix}/man'
+
+ac_prev=
+for ac_option
+do
+  # If the previous option needs an argument, assign it.
+  if test -n "$ac_prev"; then
+    eval "$ac_prev=\$ac_option"
+    ac_prev=
+    continue
+  fi
+
+  ac_optarg=`expr "x$ac_option" : 'x[^=]*=\(.*\)'`
+
+  # Accept the important Cygnus configure options, so we can diagnose typos.
+
+  case $ac_option in
+
+  -bindir | --bindir | --bindi | --bind | --bin | --bi)
+    ac_prev=bindir ;;
+  -bindir=* | --bindir=* | --bindi=* | --bind=* | --bin=* | --bi=*)
+    bindir=$ac_optarg ;;
+
+  -build | --build | --buil | --bui | --bu)
+    ac_prev=build_alias ;;
+  -build=* | --build=* | --buil=* | --bui=* | --bu=*)
+    build_alias=$ac_optarg ;;
+
+  -cache-file | --cache-file | --cache-fil | --cache-fi \
+  | --cache-f | --cache- | --cache | --cach | --cac | --ca | --c)
+    ac_prev=cache_file ;;
+  -cache-file=* | --cache-file=* | --cache-fil=* | --cache-fi=* \
+  | --cache-f=* | --cache-=* | --cache=* | --cach=* | --cac=* | --ca=* | --c=*)
+    cache_file=$ac_optarg ;;
+
+  --config-cache | -C)
+    cache_file=config.cache ;;
+
+  -datadir | --datadir | --datadi | --datad | --data | --dat | --da)
+    ac_prev=datadir ;;
+  -datadir=* | --datadir=* | --datadi=* | --datad=* | --data=* | --dat=* \
+  | --da=*)
+    datadir=$ac_optarg ;;
+
+  -disable-* | --disable-*)
+    ac_feature=`expr "x$ac_option" : 'x-*disable-\(.*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_feature" : ".*[^-_$as_cr_alnum]" >/dev/null &&
+      { echo "$as_me: error: invalid feature name: $ac_feature" >&2
+   { (exit 1); exit 1; }; }
+    ac_feature=`echo $ac_feature | sed 's/-/_/g'`
+    eval "enable_$ac_feature=no" ;;
+
+  -enable-* | --enable-*)
+    ac_feature=`expr "x$ac_option" : 'x-*enable-\([^=]*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_feature" : ".*[^-_$as_cr_alnum]" >/dev/null &&
+      { echo "$as_me: error: invalid feature name: $ac_feature" >&2
+   { (exit 1); exit 1; }; }
+    ac_feature=`echo $ac_feature | sed 's/-/_/g'`
+    case $ac_option in
+      *=*) ac_optarg=`echo "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"`;;
+      *) ac_optarg=yes ;;
+    esac
+    eval "enable_$ac_feature='$ac_optarg'" ;;
+
+  -exec-prefix | --exec_prefix | --exec-prefix | --exec-prefi \
+  | --exec-pref | --exec-pre | --exec-pr | --exec-p | --exec- \
+  | --exec | --exe | --ex)
+    ac_prev=exec_prefix ;;
+  -exec-prefix=* | --exec_prefix=* | --exec-prefix=* | --exec-prefi=* \
+  | --exec-pref=* | --exec-pre=* | --exec-pr=* | --exec-p=* | --exec-=* \
+  | --exec=* | --exe=* | --ex=*)
+    exec_prefix=$ac_optarg ;;
+
+  -gas | --gas | --ga | --g)
+    # Obsolete; use --with-gas.
+    with_gas=yes ;;
+
+  -help | --help | --hel | --he | -h)
+    ac_init_help=long ;;
+  -help=r* | --help=r* | --hel=r* | --he=r* | -hr*)
+    ac_init_help=recursive ;;
+  -help=s* | --help=s* | --hel=s* | --he=s* | -hs*)
+    ac_init_help=short ;;
+
+  -host | --host | --hos | --ho)
+    ac_prev=host_alias ;;
+  -host=* | --host=* | --hos=* | --ho=*)
+    host_alias=$ac_optarg ;;
+
+  -includedir | --includedir | --includedi | --included | --include \
+  | --includ | --inclu | --incl | --inc)
+    ac_prev=includedir ;;
+  -includedir=* | --includedir=* | --includedi=* | --included=* | --include=* \
+  | --includ=* | --inclu=* | --incl=* | --inc=*)
+    includedir=$ac_optarg ;;
+
+  -infodir | --infodir | --infodi | --infod | --info | --inf)
+    ac_prev=infodir ;;
+  -infodir=* | --infodir=* | --infodi=* | --infod=* | --info=* | --inf=*)
+    infodir=$ac_optarg ;;
+
+  -libdir | --libdir | --libdi | --libd)
+    ac_prev=libdir ;;
+  -libdir=* | --libdir=* | --libdi=* | --libd=*)
+    libdir=$ac_optarg ;;
+
+  -libexecdir | --libexecdir | --libexecdi | --libexecd | --libexec \
+  | --libexe | --libex | --libe)
+    ac_prev=libexecdir ;;
+  -libexecdir=* | --libexecdir=* | --libexecdi=* | --libexecd=* | --libexec=* \
+  | --libexe=* | --libex=* | --libe=*)
+    libexecdir=$ac_optarg ;;
+
+  -localstatedir | --localstatedir | --localstatedi | --localstated \
+  | --localstate | --localstat | --localsta | --localst \
+  | --locals | --local | --loca | --loc | --lo)
+    ac_prev=localstatedir ;;
+  -localstatedir=* | --localstatedir=* | --localstatedi=* | --localstated=* \
+  | --localstate=* | --localstat=* | --localsta=* | --localst=* \
+  | --locals=* | --local=* | --loca=* | --loc=* | --lo=*)
+    localstatedir=$ac_optarg ;;
+
+  -mandir | --mandir | --mandi | --mand | --man | --ma | --m)
+    ac_prev=mandir ;;
+  -mandir=* | --mandir=* | --mandi=* | --mand=* | --man=* | --ma=* | --m=*)
+    mandir=$ac_optarg ;;
+
+  -nfp | --nfp | --nf)
+    # Obsolete; use --without-fp.
+    with_fp=no ;;
+
+  -no-create | --no-create | --no-creat | --no-crea | --no-cre \
+  | --no-cr | --no-c | -n)
+    no_create=yes ;;
+
+  -no-recursion | --no-recursion | --no-recursio | --no-recursi \
+  | --no-recurs | --no-recur | --no-recu | --no-rec | --no-re | --no-r)
+    no_recursion=yes ;;
+
+  -oldincludedir | --oldincludedir | --oldincludedi | --oldincluded \
+  | --oldinclude | --oldinclud | --oldinclu | --oldincl | --oldinc \
+  | --oldin | --oldi | --old | --ol | --o)
+    ac_prev=oldincludedir ;;
+  -oldincludedir=* | --oldincludedir=* | --oldincludedi=* | --oldincluded=* \
+  | --oldinclude=* | --oldinclud=* | --oldinclu=* | --oldincl=* | --oldinc=* \
+  | --oldin=* | --oldi=* | --old=* | --ol=* | --o=*)
+    oldincludedir=$ac_optarg ;;
+
+  -prefix | --prefix | --prefi | --pref | --pre | --pr | --p)
+    ac_prev=prefix ;;
+  -prefix=* | --prefix=* | --prefi=* | --pref=* | --pre=* | --pr=* | --p=*)
+    prefix=$ac_optarg ;;
+
+  -program-prefix | --program-prefix | --program-prefi | --program-pref \
+  | --program-pre | --program-pr | --program-p)
+    ac_prev=program_prefix ;;
+  -program-prefix=* | --program-prefix=* | --program-prefi=* \
+  | --program-pref=* | --program-pre=* | --program-pr=* | --program-p=*)
+    program_prefix=$ac_optarg ;;
+
+  -program-suffix | --program-suffix | --program-suffi | --program-suff \
+  | --program-suf | --program-su | --program-s)
+    ac_prev=program_suffix ;;
+  -program-suffix=* | --program-suffix=* | --program-suffi=* \
+  | --program-suff=* | --program-suf=* | --program-su=* | --program-s=*)
+    program_suffix=$ac_optarg ;;
+
+  -program-transform-name | --program-transform-name \
+  | --program-transform-nam | --program-transform-na \
+  | --program-transform-n | --program-transform- \
+  | --program-transform | --program-transfor \
+  | --program-transfo | --program-transf \
+  | --program-trans | --program-tran \
+  | --progr-tra | --program-tr | --program-t)
+    ac_prev=program_transform_name ;;
+  -program-transform-name=* | --program-transform-name=* \
+  | --program-transform-nam=* | --program-transform-na=* \
+  | --program-transform-n=* | --program-transform-=* \
+  | --program-transform=* | --program-transfor=* \
+  | --program-transfo=* | --program-transf=* \
+  | --program-trans=* | --program-tran=* \
+  | --progr-tra=* | --program-tr=* | --program-t=*)
+    program_transform_name=$ac_optarg ;;
+
+  -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+  | -silent | --silent | --silen | --sile | --sil)
+    silent=yes ;;
+
+  -sbindir | --sbindir | --sbindi | --sbind | --sbin | --sbi | --sb)
+    ac_prev=sbindir ;;
+  -sbindir=* | --sbindir=* | --sbindi=* | --sbind=* | --sbin=* \
+  | --sbi=* | --sb=*)
+    sbindir=$ac_optarg ;;
+
+  -sharedstatedir | --sharedstatedir | --sharedstatedi \
+  | --sharedstated | --sharedstate | --sharedstat | --sharedsta \
+  | --sharedst | --shareds | --shared | --share | --shar \
+  | --sha | --sh)
+    ac_prev=sharedstatedir ;;
+  -sharedstatedir=* | --sharedstatedir=* | --sharedstatedi=* \
+  | --sharedstated=* | --sharedstate=* | --sharedstat=* | --sharedsta=* \
+  | --sharedst=* | --shareds=* | --shared=* | --share=* | --shar=* \
+  | --sha=* | --sh=*)
+    sharedstatedir=$ac_optarg ;;
+
+  -site | --site | --sit)
+    ac_prev=site ;;
+  -site=* | --site=* | --sit=*)
+    site=$ac_optarg ;;
+
+  -srcdir | --srcdir | --srcdi | --srcd | --src | --sr)
+    ac_prev=srcdir ;;
+  -srcdir=* | --srcdir=* | --srcdi=* | --srcd=* | --src=* | --sr=*)
+    srcdir=$ac_optarg ;;
+
+  -sysconfdir | --sysconfdir | --sysconfdi | --sysconfd | --sysconf \
+  | --syscon | --sysco | --sysc | --sys | --sy)
+    ac_prev=sysconfdir ;;
+  -sysconfdir=* | --sysconfdir=* | --sysconfdi=* | --sysconfd=* | --sysconf=* \
+  | --syscon=* | --sysco=* | --sysc=* | --sys=* | --sy=*)
+    sysconfdir=$ac_optarg ;;
+
+  -target | --target | --targe | --targ | --tar | --ta | --t)
+    ac_prev=target_alias ;;
+  -target=* | --target=* | --targe=* | --targ=* | --tar=* | --ta=* | --t=*)
+    target_alias=$ac_optarg ;;
+
+  -v | -verbose | --verbose | --verbos | --verbo | --verb)
+    verbose=yes ;;
+
+  -version | --version | --versio | --versi | --vers | -V)
+    ac_init_version=: ;;
+
+  -with-* | --with-*)
+    ac_package=`expr "x$ac_option" : 'x-*with-\([^=]*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_package" : ".*[^-_$as_cr_alnum]" >/dev/null &&
+      { echo "$as_me: error: invalid package name: $ac_package" >&2
+   { (exit 1); exit 1; }; }
+    ac_package=`echo $ac_package| sed 's/-/_/g'`
+    case $ac_option in
+      *=*) ac_optarg=`echo "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"`;;
+      *) ac_optarg=yes ;;
+    esac
+    eval "with_$ac_package='$ac_optarg'" ;;
+
+  -without-* | --without-*)
+    ac_package=`expr "x$ac_option" : 'x-*without-\(.*\)'`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_package" : ".*[^-_$as_cr_alnum]" >/dev/null &&
+      { echo "$as_me: error: invalid package name: $ac_package" >&2
+   { (exit 1); exit 1; }; }
+    ac_package=`echo $ac_package | sed 's/-/_/g'`
+    eval "with_$ac_package=no" ;;
+
+  --x)
+    # Obsolete; use --with-x.
+    with_x=yes ;;
+
+  -x-includes | --x-includes | --x-include | --x-includ | --x-inclu \
+  | --x-incl | --x-inc | --x-in | --x-i)
+    ac_prev=x_includes ;;
+  -x-includes=* | --x-includes=* | --x-include=* | --x-includ=* | --x-inclu=* \
+  | --x-incl=* | --x-inc=* | --x-in=* | --x-i=*)
+    x_includes=$ac_optarg ;;
+
+  -x-libraries | --x-libraries | --x-librarie | --x-librari \
+  | --x-librar | --x-libra | --x-libr | --x-lib | --x-li | --x-l)
+    ac_prev=x_libraries ;;
+  -x-libraries=* | --x-libraries=* | --x-librarie=* | --x-librari=* \
+  | --x-librar=* | --x-libra=* | --x-libr=* | --x-lib=* | --x-li=* | --x-l=*)
+    x_libraries=$ac_optarg ;;
+
+  -*) { echo "$as_me: error: unrecognized option: $ac_option
+Try \`$0 --help' for more information." >&2
+   { (exit 1); exit 1; }; }
+    ;;
+
+  *=*)
+    ac_envvar=`expr "x$ac_option" : 'x\([^=]*\)='`
+    # Reject names that are not valid shell variable names.
+    expr "x$ac_envvar" : ".*[^_$as_cr_alnum]" >/dev/null &&
+      { echo "$as_me: error: invalid variable name: $ac_envvar" >&2
+   { (exit 1); exit 1; }; }
+    ac_optarg=`echo "$ac_optarg" | sed "s/'/'\\\\\\\\''/g"`
+    eval "$ac_envvar='$ac_optarg'"
+    export $ac_envvar ;;
+
+  *)
+    # FIXME: should be removed in autoconf 3.0.
+    echo "$as_me: WARNING: you should use --build, --host, --target" >&2
+    expr "x$ac_option" : ".*[^-._$as_cr_alnum]" >/dev/null &&
+      echo "$as_me: WARNING: invalid host type: $ac_option" >&2
+    : ${build_alias=$ac_option} ${host_alias=$ac_option} ${target_alias=$ac_option}
+    ;;
+
+  esac
+done
+
+if test -n "$ac_prev"; then
+  ac_option=--`echo $ac_prev | sed 's/_/-/g'`
+  { echo "$as_me: error: missing argument to $ac_option" >&2
+   { (exit 1); exit 1; }; }
+fi
+
+# Be sure to have absolute paths.
+for ac_var in exec_prefix prefix
+do
+  eval ac_val=$`echo $ac_var`
+  case $ac_val in
+    [\\/$]* | ?:[\\/]* | NONE | '' ) ;;
+    *)  { echo "$as_me: error: expected an absolute directory name for --$ac_var: $ac_val" >&2
+   { (exit 1); exit 1; }; };;
+  esac
+done
+
+# Be sure to have absolute paths.
+for ac_var in bindir sbindir libexecdir datadir sysconfdir sharedstatedir \
+	      localstatedir libdir includedir oldincludedir infodir mandir
+do
+  eval ac_val=$`echo $ac_var`
+  case $ac_val in
+    [\\/$]* | ?:[\\/]* ) ;;
+    *)  { echo "$as_me: error: expected an absolute directory name for --$ac_var: $ac_val" >&2
+   { (exit 1); exit 1; }; };;
+  esac
+done
+
+# There might be people who depend on the old broken behavior: `$host'
+# used to hold the argument of --host etc.
+# FIXME: To remove some day.
+build=$build_alias
+host=$host_alias
+target=$target_alias
+
+# FIXME: To remove some day.
+if test "x$host_alias" != x; then
+  if test "x$build_alias" = x; then
+    cross_compiling=maybe
+    echo "$as_me: WARNING: If you wanted to set the --build type, don't use --host.
+    If a cross compiler is detected then cross compile mode will be used." >&2
+  elif test "x$build_alias" != "x$host_alias"; then
+    cross_compiling=yes
+  fi
+fi
+
+ac_tool_prefix=
+test -n "$host_alias" && ac_tool_prefix=$host_alias-
+
+test "$silent" = yes && exec 6>/dev/null
+
+
+# Find the source files, if location was not specified.
+if test -z "$srcdir"; then
+  ac_srcdir_defaulted=yes
+  # Try the directory containing this script, then its parent.
+  ac_confdir=`(dirname "$0") 2>/dev/null ||
+$as_expr X"$0" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$0" : 'X\(//\)[^/]' \| \
+	 X"$0" : 'X\(//\)$' \| \
+	 X"$0" : 'X\(/\)' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X"$0" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+  srcdir=$ac_confdir
+  if test ! -r $srcdir/$ac_unique_file; then
+    srcdir=..
+  fi
+else
+  ac_srcdir_defaulted=no
+fi
+if test ! -r $srcdir/$ac_unique_file; then
+  if test "$ac_srcdir_defaulted" = yes; then
+    { echo "$as_me: error: cannot find sources ($ac_unique_file) in $ac_confdir or .." >&2
+   { (exit 1); exit 1; }; }
+  else
+    { echo "$as_me: error: cannot find sources ($ac_unique_file) in $srcdir" >&2
+   { (exit 1); exit 1; }; }
+  fi
+fi
+(cd $srcdir && test -r ./$ac_unique_file) 2>/dev/null ||
+  { echo "$as_me: error: sources are in $srcdir, but \`cd $srcdir' does not work" >&2
+   { (exit 1); exit 1; }; }
+srcdir=`echo "$srcdir" | sed 's%\([^\\/]\)[\\/]*$%\1%'`
+ac_env_build_alias_set=${build_alias+set}
+ac_env_build_alias_value=$build_alias
+ac_cv_env_build_alias_set=${build_alias+set}
+ac_cv_env_build_alias_value=$build_alias
+ac_env_host_alias_set=${host_alias+set}
+ac_env_host_alias_value=$host_alias
+ac_cv_env_host_alias_set=${host_alias+set}
+ac_cv_env_host_alias_value=$host_alias
+ac_env_target_alias_set=${target_alias+set}
+ac_env_target_alias_value=$target_alias
+ac_cv_env_target_alias_set=${target_alias+set}
+ac_cv_env_target_alias_value=$target_alias
+ac_env_CC_set=${CC+set}
+ac_env_CC_value=$CC
+ac_cv_env_CC_set=${CC+set}
+ac_cv_env_CC_value=$CC
+ac_env_CFLAGS_set=${CFLAGS+set}
+ac_env_CFLAGS_value=$CFLAGS
+ac_cv_env_CFLAGS_set=${CFLAGS+set}
+ac_cv_env_CFLAGS_value=$CFLAGS
+ac_env_LDFLAGS_set=${LDFLAGS+set}
+ac_env_LDFLAGS_value=$LDFLAGS
+ac_cv_env_LDFLAGS_set=${LDFLAGS+set}
+ac_cv_env_LDFLAGS_value=$LDFLAGS
+ac_env_CPPFLAGS_set=${CPPFLAGS+set}
+ac_env_CPPFLAGS_value=$CPPFLAGS
+ac_cv_env_CPPFLAGS_set=${CPPFLAGS+set}
+ac_cv_env_CPPFLAGS_value=$CPPFLAGS
+ac_env_CPP_set=${CPP+set}
+ac_env_CPP_value=$CPP
+ac_cv_env_CPP_set=${CPP+set}
+ac_cv_env_CPP_value=$CPP
+
+#
+# Report the --help message.
+#
+if test "$ac_init_help" = "long"; then
+  # Omit some internal or obsolete options to make the list less imposing.
+  # This message is too long to be a string in the A/UX 3.1 sh.
+  cat <<_ACEOF
+\`configure' configures this package to adapt to many kinds of systems.
+
+Usage: $0 [OPTION]... [VAR=VALUE]...
+
+To assign environment variables (e.g., CC, CFLAGS...), specify them as
+VAR=VALUE.  See below for descriptions of some of the useful variables.
+
+Defaults for the options are specified in brackets.
+
+Configuration:
+  -h, --help              display this help and exit
+      --help=short        display options specific to this package
+      --help=recursive    display the short help of all the included packages
+  -V, --version           display version information and exit
+  -q, --quiet, --silent   do not print \`checking...' messages
+      --cache-file=FILE   cache test results in FILE [disabled]
+  -C, --config-cache      alias for \`--cache-file=config.cache'
+  -n, --no-create         do not create output files
+      --srcdir=DIR        find the sources in DIR [configure dir or \`..']
+
+_ACEOF
+
+  cat <<_ACEOF
+Installation directories:
+  --prefix=PREFIX         install architecture-independent files in PREFIX
+			  [$ac_default_prefix]
+  --exec-prefix=EPREFIX   install architecture-dependent files in EPREFIX
+			  [PREFIX]
+
+By default, \`make install' will install all the files in
+\`$ac_default_prefix/bin', \`$ac_default_prefix/lib' etc.  You can specify
+an installation prefix other than \`$ac_default_prefix' using \`--prefix',
+for instance \`--prefix=\$HOME'.
+
+For better control, use the options below.
+
+Fine tuning of the installation directories:
+  --bindir=DIR           user executables [EPREFIX/bin]
+  --sbindir=DIR          system admin executables [EPREFIX/sbin]
+  --libexecdir=DIR       program executables [EPREFIX/libexec]
+  --datadir=DIR          read-only architecture-independent data [PREFIX/share]
+  --sysconfdir=DIR       read-only single-machine data [PREFIX/etc]
+  --sharedstatedir=DIR   modifiable architecture-independent data [PREFIX/com]
+  --localstatedir=DIR    modifiable single-machine data [PREFIX/var]
+  --libdir=DIR           object code libraries [EPREFIX/lib]
+  --includedir=DIR       C header files [PREFIX/include]
+  --oldincludedir=DIR    C header files for non-gcc [/usr/include]
+  --infodir=DIR          info documentation [PREFIX/info]
+  --mandir=DIR           man documentation [PREFIX/man]
+_ACEOF
+
+  cat <<\_ACEOF
+_ACEOF
+fi
+
+if test -n "$ac_init_help"; then
+
+  cat <<\_ACEOF
+
+Some influential environment variables:
+  CC          C compiler command
+  CFLAGS      C compiler flags
+  LDFLAGS     linker flags, e.g. -L<lib dir> if you have libraries in a
+              nonstandard directory <lib dir>
+  CPPFLAGS    C/C++ preprocessor flags, e.g. -I<include dir> if you have
+              headers in a nonstandard directory <include dir>
+  CPP         C preprocessor
+
+Use these variables to override the choices made by `configure' or to help
+it to find libraries and programs with nonstandard names/locations.
+
+_ACEOF
+fi
+
+if test "$ac_init_help" = "recursive"; then
+  # If there are subdirs, report their specific --help.
+  ac_popdir=`pwd`
+  for ac_dir in : $ac_subdirs_all; do test "x$ac_dir" = x: && continue
+    test -d $ac_dir || continue
+    ac_builddir=.
+
+if test "$ac_dir" != .; then
+  ac_dir_suffix=/`echo "$ac_dir" | sed 's,^\.[\\/],,'`
+  # A "../" for each directory in $ac_dir_suffix.
+  ac_top_builddir=`echo "$ac_dir_suffix" | sed 's,/[^\\/]*,../,g'`
+else
+  ac_dir_suffix= ac_top_builddir=
+fi
+
+case $srcdir in
+  .)  # No --srcdir option.  We are building in place.
+    ac_srcdir=.
+    if test -z "$ac_top_builddir"; then
+       ac_top_srcdir=.
+    else
+       ac_top_srcdir=`echo $ac_top_builddir | sed 's,/$,,'`
+    fi ;;
+  [\\/]* | ?:[\\/]* )  # Absolute path.
+    ac_srcdir=$srcdir$ac_dir_suffix;
+    ac_top_srcdir=$srcdir ;;
+  *) # Relative path.
+    ac_srcdir=$ac_top_builddir$srcdir$ac_dir_suffix
+    ac_top_srcdir=$ac_top_builddir$srcdir ;;
+esac
+
+# Do not use `cd foo && pwd` to compute absolute paths, because
+# the directories may not exist.
+case `pwd` in
+.) ac_abs_builddir="$ac_dir";;
+*)
+  case "$ac_dir" in
+  .) ac_abs_builddir=`pwd`;;
+  [\\/]* | ?:[\\/]* ) ac_abs_builddir="$ac_dir";;
+  *) ac_abs_builddir=`pwd`/"$ac_dir";;
+  esac;;
+esac
+case $ac_abs_builddir in
+.) ac_abs_top_builddir=${ac_top_builddir}.;;
+*)
+  case ${ac_top_builddir}. in
+  .) ac_abs_top_builddir=$ac_abs_builddir;;
+  [\\/]* | ?:[\\/]* ) ac_abs_top_builddir=${ac_top_builddir}.;;
+  *) ac_abs_top_builddir=$ac_abs_builddir/${ac_top_builddir}.;;
+  esac;;
+esac
+case $ac_abs_builddir in
+.) ac_abs_srcdir=$ac_srcdir;;
+*)
+  case $ac_srcdir in
+  .) ac_abs_srcdir=$ac_abs_builddir;;
+  [\\/]* | ?:[\\/]* ) ac_abs_srcdir=$ac_srcdir;;
+  *) ac_abs_srcdir=$ac_abs_builddir/$ac_srcdir;;
+  esac;;
+esac
+case $ac_abs_builddir in
+.) ac_abs_top_srcdir=$ac_top_srcdir;;
+*)
+  case $ac_top_srcdir in
+  .) ac_abs_top_srcdir=$ac_abs_builddir;;
+  [\\/]* | ?:[\\/]* ) ac_abs_top_srcdir=$ac_top_srcdir;;
+  *) ac_abs_top_srcdir=$ac_abs_builddir/$ac_top_srcdir;;
+  esac;;
+esac
+
+    cd $ac_dir
+    # Check for guested configure; otherwise get Cygnus style configure.
+    if test -f $ac_srcdir/configure.gnu; then
+      echo
+      $SHELL $ac_srcdir/configure.gnu  --help=recursive
+    elif test -f $ac_srcdir/configure; then
+      echo
+      $SHELL $ac_srcdir/configure  --help=recursive
+    elif test -f $ac_srcdir/configure.ac ||
+	   test -f $ac_srcdir/configure.in; then
+      echo
+      $ac_configure --help
+    else
+      echo "$as_me: WARNING: no configuration information is in $ac_dir" >&2
+    fi
+    cd "$ac_popdir"
+  done
+fi
+
+test -n "$ac_init_help" && exit 0
+if $ac_init_version; then
+  cat <<\_ACEOF
+
+Copyright (C) 2003 Free Software Foundation, Inc.
+This configure script is free software; the Free Software Foundation
+gives unlimited permission to copy, distribute and modify it.
+_ACEOF
+  exit 0
+fi
+exec 5>config.log
+cat >&5 <<_ACEOF
+This file contains any messages produced by compilers while
+running configure, to aid debugging if configure makes a mistake.
+
+It was created by $as_me, which was
+generated by GNU Autoconf 2.59.  Invocation command line was
+
+  $ $0 $@
+
+_ACEOF
+{
+cat <<_ASUNAME
+## --------- ##
+## Platform. ##
+## --------- ##
+
+hostname = `(hostname || uname -n) 2>/dev/null | sed 1q`
+uname -m = `(uname -m) 2>/dev/null || echo unknown`
+uname -r = `(uname -r) 2>/dev/null || echo unknown`
+uname -s = `(uname -s) 2>/dev/null || echo unknown`
+uname -v = `(uname -v) 2>/dev/null || echo unknown`
+
+/usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null || echo unknown`
+/bin/uname -X     = `(/bin/uname -X) 2>/dev/null     || echo unknown`
+
+/bin/arch              = `(/bin/arch) 2>/dev/null              || echo unknown`
+/usr/bin/arch -k       = `(/usr/bin/arch -k) 2>/dev/null       || echo unknown`
+/usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null || echo unknown`
+hostinfo               = `(hostinfo) 2>/dev/null               || echo unknown`
+/bin/machine           = `(/bin/machine) 2>/dev/null           || echo unknown`
+/usr/bin/oslevel       = `(/usr/bin/oslevel) 2>/dev/null       || echo unknown`
+/bin/universe          = `(/bin/universe) 2>/dev/null          || echo unknown`
+
+_ASUNAME
+
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  echo "PATH: $as_dir"
+done
+
+} >&5
+
+cat >&5 <<_ACEOF
+
+
+## ----------- ##
+## Core tests. ##
+## ----------- ##
+
+_ACEOF
+
+
+# Keep a trace of the command line.
+# Strip out --no-create and --no-recursion so they do not pile up.
+# Strip out --silent because we don't want to record it for future runs.
+# Also quote any args containing shell meta-characters.
+# Make two passes to allow for proper duplicate-argument suppression.
+ac_configure_args=
+ac_configure_args0=
+ac_configure_args1=
+ac_sep=
+ac_must_keep_next=false
+for ac_pass in 1 2
+do
+  for ac_arg
+  do
+    case $ac_arg in
+    -no-create | --no-c* | -n | -no-recursion | --no-r*) continue ;;
+    -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+    | -silent | --silent | --silen | --sile | --sil)
+      continue ;;
+    *" "*|*"	"*|*[\[\]\~\#\$\^\&\*\(\)\{\}\\\|\;\<\>\?\"\']*)
+      ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+    esac
+    case $ac_pass in
+    1) ac_configure_args0="$ac_configure_args0 '$ac_arg'" ;;
+    2)
+      ac_configure_args1="$ac_configure_args1 '$ac_arg'"
+      if test $ac_must_keep_next = true; then
+	ac_must_keep_next=false # Got value, back to normal.
+      else
+	case $ac_arg in
+	  *=* | --config-cache | -C | -disable-* | --disable-* \
+	  | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \
+	  | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \
+	  | -with-* | --with-* | -without-* | --without-* | --x)
+	    case "$ac_configure_args0 " in
+	      "$ac_configure_args1"*" '$ac_arg' "* ) continue ;;
+	    esac
+	    ;;
+	  -* ) ac_must_keep_next=true ;;
+	esac
+      fi
+      ac_configure_args="$ac_configure_args$ac_sep'$ac_arg'"
+      # Get rid of the leading space.
+      ac_sep=" "
+      ;;
+    esac
+  done
+done
+$as_unset ac_configure_args0 || test "${ac_configure_args0+set}" != set || { ac_configure_args0=; export ac_configure_args0; }
+$as_unset ac_configure_args1 || test "${ac_configure_args1+set}" != set || { ac_configure_args1=; export ac_configure_args1; }
+
+# When interrupted or exit'd, cleanup temporary files, and complete
+# config.log.  We remove comments because anyway the quotes in there
+# would cause problems or look ugly.
+# WARNING: Be sure not to use single quotes in there, as some shells,
+# such as our DU 5.0 friend, will then `close' the trap.
+trap 'exit_status=$?
+  # Save into config.log some information that might help in debugging.
+  {
+    echo
+
+    cat <<\_ASBOX
+## ---------------- ##
+## Cache variables. ##
+## ---------------- ##
+_ASBOX
+    echo
+    # The following way of writing the cache mishandles newlines in values,
+{
+  (set) 2>&1 |
+    case `(ac_space='"'"' '"'"'; set | grep ac_space) 2>&1` in
+    *ac_space=\ *)
+      sed -n \
+	"s/'"'"'/'"'"'\\\\'"'"''"'"'/g;
+	  s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='"'"'\\2'"'"'/p"
+      ;;
+    *)
+      sed -n \
+	"s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1=\\2/p"
+      ;;
+    esac;
+}
+    echo
+
+    cat <<\_ASBOX
+## ----------------- ##
+## Output variables. ##
+## ----------------- ##
+_ASBOX
+    echo
+    for ac_var in $ac_subst_vars
+    do
+      eval ac_val=$`echo $ac_var`
+      echo "$ac_var='"'"'$ac_val'"'"'"
+    done | sort
+    echo
+
+    if test -n "$ac_subst_files"; then
+      cat <<\_ASBOX
+## ------------- ##
+## Output files. ##
+## ------------- ##
+_ASBOX
+      echo
+      for ac_var in $ac_subst_files
+      do
+	eval ac_val=$`echo $ac_var`
+	echo "$ac_var='"'"'$ac_val'"'"'"
+      done | sort
+      echo
+    fi
+
+    if test -s confdefs.h; then
+      cat <<\_ASBOX
+## ----------- ##
+## confdefs.h. ##
+## ----------- ##
+_ASBOX
+      echo
+      sed "/^$/d" confdefs.h | sort
+      echo
+    fi
+    test "$ac_signal" != 0 &&
+      echo "$as_me: caught signal $ac_signal"
+    echo "$as_me: exit $exit_status"
+  } >&5
+  rm -f core *.core &&
+  rm -rf conftest* confdefs* conf$$* $ac_clean_files &&
+    exit $exit_status
+     ' 0
+for ac_signal in 1 2 13 15; do
+  trap 'ac_signal='$ac_signal'; { (exit 1); exit 1; }' $ac_signal
+done
+ac_signal=0
+
+# confdefs.h avoids OS command line length limits that DEFS can exceed.
+rm -rf conftest* confdefs.h
+# AIX cpp loses on an empty file, so make sure it contains at least a newline.
+echo >confdefs.h
+
+# Predefined preprocessor variables.
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_NAME "$PACKAGE_NAME"
+_ACEOF
+
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_TARNAME "$PACKAGE_TARNAME"
+_ACEOF
+
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_VERSION "$PACKAGE_VERSION"
+_ACEOF
+
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_STRING "$PACKAGE_STRING"
+_ACEOF
+
+
+cat >>confdefs.h <<_ACEOF
+#define PACKAGE_BUGREPORT "$PACKAGE_BUGREPORT"
+_ACEOF
+
+
+# Let the site file select an alternate cache file if it wants to.
+# Prefer explicitly selected file to automatically selected ones.
+if test -z "$CONFIG_SITE"; then
+  if test "x$prefix" != xNONE; then
+    CONFIG_SITE="$prefix/share/config.site $prefix/etc/config.site"
+  else
+    CONFIG_SITE="$ac_default_prefix/share/config.site $ac_default_prefix/etc/config.site"
+  fi
+fi
+for ac_site_file in $CONFIG_SITE; do
+  if test -r "$ac_site_file"; then
+    { echo "$as_me:$LINENO: loading site script $ac_site_file" >&5
+echo "$as_me: loading site script $ac_site_file" >&6;}
+    sed 's/^/| /' "$ac_site_file" >&5
+    . "$ac_site_file"
+  fi
+done
+
+if test -r "$cache_file"; then
+  # Some versions of bash will fail to source /dev/null (special
+  # files actually), so we avoid doing that.
+  if test -f "$cache_file"; then
+    { echo "$as_me:$LINENO: loading cache $cache_file" >&5
+echo "$as_me: loading cache $cache_file" >&6;}
+    case $cache_file in
+      [\\/]* | ?:[\\/]* ) . $cache_file;;
+      *)                      . ./$cache_file;;
+    esac
+  fi
+else
+  { echo "$as_me:$LINENO: creating cache $cache_file" >&5
+echo "$as_me: creating cache $cache_file" >&6;}
+  >$cache_file
+fi
+
+# Check that the precious variables saved in the cache have kept the same
+# value.
+ac_cache_corrupted=false
+for ac_var in `(set) 2>&1 |
+	       sed -n 's/^ac_env_\([a-zA-Z_0-9]*\)_set=.*/\1/p'`; do
+  eval ac_old_set=\$ac_cv_env_${ac_var}_set
+  eval ac_new_set=\$ac_env_${ac_var}_set
+  eval ac_old_val="\$ac_cv_env_${ac_var}_value"
+  eval ac_new_val="\$ac_env_${ac_var}_value"
+  case $ac_old_set,$ac_new_set in
+    set,)
+      { echo "$as_me:$LINENO: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&5
+echo "$as_me: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&2;}
+      ac_cache_corrupted=: ;;
+    ,set)
+      { echo "$as_me:$LINENO: error: \`$ac_var' was not set in the previous run" >&5
+echo "$as_me: error: \`$ac_var' was not set in the previous run" >&2;}
+      ac_cache_corrupted=: ;;
+    ,);;
+    *)
+      if test "x$ac_old_val" != "x$ac_new_val"; then
+	{ echo "$as_me:$LINENO: error: \`$ac_var' has changed since the previous run:" >&5
+echo "$as_me: error: \`$ac_var' has changed since the previous run:" >&2;}
+	{ echo "$as_me:$LINENO:   former value:  $ac_old_val" >&5
+echo "$as_me:   former value:  $ac_old_val" >&2;}
+	{ echo "$as_me:$LINENO:   current value: $ac_new_val" >&5
+echo "$as_me:   current value: $ac_new_val" >&2;}
+	ac_cache_corrupted=:
+      fi;;
+  esac
+  # Pass precious variables to config.status.
+  if test "$ac_new_set" = set; then
+    case $ac_new_val in
+    *" "*|*"	"*|*[\[\]\~\#\$\^\&\*\(\)\{\}\\\|\;\<\>\?\"\']*)
+      ac_arg=$ac_var=`echo "$ac_new_val" | sed "s/'/'\\\\\\\\''/g"` ;;
+    *) ac_arg=$ac_var=$ac_new_val ;;
+    esac
+    case " $ac_configure_args " in
+      *" '$ac_arg' "*) ;; # Avoid dups.  Use of quotes ensures accuracy.
+      *) ac_configure_args="$ac_configure_args '$ac_arg'" ;;
+    esac
+  fi
+done
+if $ac_cache_corrupted; then
+  { echo "$as_me:$LINENO: error: changes in the environment can compromise the build" >&5
+echo "$as_me: error: changes in the environment can compromise the build" >&2;}
+  { { echo "$as_me:$LINENO: error: run \`make distclean' and/or \`rm $cache_file' and start over" >&5
+echo "$as_me: error: run \`make distclean' and/or \`rm $cache_file' and start over" >&2;}
+   { (exit 1); exit 1; }; }
+fi
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}gcc", so it can be a program name with args.
+set dummy ${ac_tool_prefix}gcc; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_CC+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for ac_exec_ext in '' $ac_executable_extensions; do
+  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_CC="${ac_tool_prefix}gcc"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  echo "$as_me:$LINENO: result: $CC" >&5
+echo "${ECHO_T}$CC" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+fi
+if test -z "$ac_cv_prog_CC"; then
+  ac_ct_CC=$CC
+  # Extract the first word of "gcc", so it can be a program name with args.
+set dummy gcc; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_ac_ct_CC+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$ac_ct_CC"; then
+  ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for ac_exec_ext in '' $ac_executable_extensions; do
+  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_CC="gcc"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+fi
+fi
+ac_ct_CC=$ac_cv_prog_ac_ct_CC
+if test -n "$ac_ct_CC"; then
+  echo "$as_me:$LINENO: result: $ac_ct_CC" >&5
+echo "${ECHO_T}$ac_ct_CC" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+  CC=$ac_ct_CC
+else
+  CC="$ac_cv_prog_CC"
+fi
+
+if test -z "$CC"; then
+  if test -n "$ac_tool_prefix"; then
+  # Extract the first word of "${ac_tool_prefix}cc", so it can be a program name with args.
+set dummy ${ac_tool_prefix}cc; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_CC+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for ac_exec_ext in '' $ac_executable_extensions; do
+  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_CC="${ac_tool_prefix}cc"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  echo "$as_me:$LINENO: result: $CC" >&5
+echo "${ECHO_T}$CC" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+fi
+if test -z "$ac_cv_prog_CC"; then
+  ac_ct_CC=$CC
+  # Extract the first word of "cc", so it can be a program name with args.
+set dummy cc; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_ac_ct_CC+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$ac_ct_CC"; then
+  ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for ac_exec_ext in '' $ac_executable_extensions; do
+  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_CC="cc"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+fi
+fi
+ac_ct_CC=$ac_cv_prog_ac_ct_CC
+if test -n "$ac_ct_CC"; then
+  echo "$as_me:$LINENO: result: $ac_ct_CC" >&5
+echo "${ECHO_T}$ac_ct_CC" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+  CC=$ac_ct_CC
+else
+  CC="$ac_cv_prog_CC"
+fi
+
+fi
+if test -z "$CC"; then
+  # Extract the first word of "cc", so it can be a program name with args.
+set dummy cc; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_CC+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+  ac_prog_rejected=no
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for ac_exec_ext in '' $ac_executable_extensions; do
+  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    if test "$as_dir/$ac_word$ac_exec_ext" = "/usr/ucb/cc"; then
+       ac_prog_rejected=yes
+       continue
+     fi
+    ac_cv_prog_CC="cc"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+if test $ac_prog_rejected = yes; then
+  # We found a bogon in the path, so make sure we never use it.
+  set dummy $ac_cv_prog_CC
+  shift
+  if test $# != 0; then
+    # We chose a different compiler from the bogus one.
+    # However, it has the same basename, so the bogon will be chosen
+    # first if we set CC to just the basename; use the full file name.
+    shift
+    ac_cv_prog_CC="$as_dir/$ac_word${1+' '}$@"
+  fi
+fi
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  echo "$as_me:$LINENO: result: $CC" >&5
+echo "${ECHO_T}$CC" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+fi
+if test -z "$CC"; then
+  if test -n "$ac_tool_prefix"; then
+  for ac_prog in cl
+  do
+    # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args.
+set dummy $ac_tool_prefix$ac_prog; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_CC+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$CC"; then
+  ac_cv_prog_CC="$CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for ac_exec_ext in '' $ac_executable_extensions; do
+  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_CC="$ac_tool_prefix$ac_prog"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+fi
+fi
+CC=$ac_cv_prog_CC
+if test -n "$CC"; then
+  echo "$as_me:$LINENO: result: $CC" >&5
+echo "${ECHO_T}$CC" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+    test -n "$CC" && break
+  done
+fi
+if test -z "$CC"; then
+  ac_ct_CC=$CC
+  for ac_prog in cl
+do
+  # Extract the first word of "$ac_prog", so it can be a program name with args.
+set dummy $ac_prog; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_prog_ac_ct_CC+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test -n "$ac_ct_CC"; then
+  ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.
+else
+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for ac_exec_ext in '' $ac_executable_extensions; do
+  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_prog_ac_ct_CC="$ac_prog"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+fi
+fi
+ac_ct_CC=$ac_cv_prog_ac_ct_CC
+if test -n "$ac_ct_CC"; then
+  echo "$as_me:$LINENO: result: $ac_ct_CC" >&5
+echo "${ECHO_T}$ac_ct_CC" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+  test -n "$ac_ct_CC" && break
+done
+
+  CC=$ac_ct_CC
+fi
+
+fi
+
+
+test -z "$CC" && { { echo "$as_me:$LINENO: error: no acceptable C compiler found in \$PATH
+See \`config.log' for more details." >&5
+echo "$as_me: error: no acceptable C compiler found in \$PATH
+See \`config.log' for more details." >&2;}
+   { (exit 1); exit 1; }; }
+
+# Provide some information about the compiler.
+echo "$as_me:$LINENO:" \
+     "checking for C compiler version" >&5
+ac_compiler=`set X $ac_compile; echo $2`
+{ (eval echo "$as_me:$LINENO: \"$ac_compiler --version </dev/null >&5\"") >&5
+  (eval $ac_compiler --version </dev/null >&5) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }
+{ (eval echo "$as_me:$LINENO: \"$ac_compiler -v </dev/null >&5\"") >&5
+  (eval $ac_compiler -v </dev/null >&5) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }
+{ (eval echo "$as_me:$LINENO: \"$ac_compiler -V </dev/null >&5\"") >&5
+  (eval $ac_compiler -V </dev/null >&5) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }
+
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+ac_clean_files_save=$ac_clean_files
+ac_clean_files="$ac_clean_files a.out a.exe b.out"
+# Try to create an executable without -o first, disregard a.out.
+# It will help us diagnose broken compilers, and finding out an intuition
+# of exeext.
+echo "$as_me:$LINENO: checking for C compiler default output file name" >&5
+echo $ECHO_N "checking for C compiler default output file name... $ECHO_C" >&6
+ac_link_default=`echo "$ac_link" | sed 's/ -o *conftest[^ ]*//'`
+if { (eval echo "$as_me:$LINENO: \"$ac_link_default\"") >&5
+  (eval $ac_link_default) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; then
+  # Find the output, starting from the most likely.  This scheme is
+# not robust to junk in `.', hence go to wildcards (a.*) only as a last
+# resort.
+
+# Be careful to initialize this variable, since it used to be cached.
+# Otherwise an old cache value of `no' led to `EXEEXT = no' in a Makefile.
+ac_cv_exeext=
+# b.out is created by i960 compilers.
+for ac_file in a_out.exe a.exe conftest.exe a.out conftest a.* conftest.* b.out
+do
+  test -f "$ac_file" || continue
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.o | *.obj )
+	;;
+    conftest.$ac_ext )
+	# This is the source file.
+	;;
+    [ab].out )
+	# We found the default executable, but exeext='' is most
+	# certainly right.
+	break;;
+    *.* )
+	ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'`
+	# FIXME: I believe we export ac_cv_exeext for Libtool,
+	# but it would be cool to find out if it's true.  Does anybody
+	# maintain Libtool? --akim.
+	export ac_cv_exeext
+	break;;
+    * )
+	break;;
+  esac
+done
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+{ { echo "$as_me:$LINENO: error: C compiler cannot create executables
+See \`config.log' for more details." >&5
+echo "$as_me: error: C compiler cannot create executables
+See \`config.log' for more details." >&2;}
+   { (exit 77); exit 77; }; }
+fi
+
+ac_exeext=$ac_cv_exeext
+echo "$as_me:$LINENO: result: $ac_file" >&5
+echo "${ECHO_T}$ac_file" >&6
+
+# Check the compiler produces executables we can run.  If not, either
+# the compiler is broken, or we cross compile.
+echo "$as_me:$LINENO: checking whether the C compiler works" >&5
+echo $ECHO_N "checking whether the C compiler works... $ECHO_C" >&6
+# FIXME: These cross compiler hacks should be removed for Autoconf 3.0
+# If not cross compiling, check that we can run a simple program.
+if test "$cross_compiling" != yes; then
+  if { ac_try='./$ac_file'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+    cross_compiling=no
+  else
+    if test "$cross_compiling" = maybe; then
+	cross_compiling=yes
+    else
+	{ { echo "$as_me:$LINENO: error: cannot run C compiled programs.
+If you meant to cross compile, use \`--host'.
+See \`config.log' for more details." >&5
+echo "$as_me: error: cannot run C compiled programs.
+If you meant to cross compile, use \`--host'.
+See \`config.log' for more details." >&2;}
+   { (exit 1); exit 1; }; }
+    fi
+  fi
+fi
+echo "$as_me:$LINENO: result: yes" >&5
+echo "${ECHO_T}yes" >&6
+
+rm -f a.out a.exe conftest$ac_cv_exeext b.out
+ac_clean_files=$ac_clean_files_save
+# Check the compiler produces executables we can run.  If not, either
+# the compiler is broken, or we cross compile.
+echo "$as_me:$LINENO: checking whether we are cross compiling" >&5
+echo $ECHO_N "checking whether we are cross compiling... $ECHO_C" >&6
+echo "$as_me:$LINENO: result: $cross_compiling" >&5
+echo "${ECHO_T}$cross_compiling" >&6
+
+echo "$as_me:$LINENO: checking for suffix of executables" >&5
+echo $ECHO_N "checking for suffix of executables... $ECHO_C" >&6
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; then
+  # If both `conftest.exe' and `conftest' are `present' (well, observable)
+# catch `conftest.exe'.  For instance with Cygwin, `ls conftest' will
+# work properly (i.e., refer to `conftest.exe'), while it won't with
+# `rm'.
+for ac_file in conftest.exe conftest conftest.*; do
+  test -f "$ac_file" || continue
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.o | *.obj ) ;;
+    *.* ) ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'`
+	  export ac_cv_exeext
+	  break;;
+    * ) break;;
+  esac
+done
+else
+  { { echo "$as_me:$LINENO: error: cannot compute suffix of executables: cannot compile and link
+See \`config.log' for more details." >&5
+echo "$as_me: error: cannot compute suffix of executables: cannot compile and link
+See \`config.log' for more details." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+
+rm -f conftest$ac_cv_exeext
+echo "$as_me:$LINENO: result: $ac_cv_exeext" >&5
+echo "${ECHO_T}$ac_cv_exeext" >&6
+
+rm -f conftest.$ac_ext
+EXEEXT=$ac_cv_exeext
+ac_exeext=$EXEEXT
+echo "$as_me:$LINENO: checking for suffix of object files" >&5
+echo $ECHO_N "checking for suffix of object files... $ECHO_C" >&6
+if test "${ac_cv_objext+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.o conftest.obj
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; then
+  for ac_file in `(ls conftest.o conftest.obj; ls conftest.*) 2>/dev/null`; do
+  case $ac_file in
+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg ) ;;
+    *) ac_cv_objext=`expr "$ac_file" : '.*\.\(.*\)'`
+       break;;
+  esac
+done
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+{ { echo "$as_me:$LINENO: error: cannot compute suffix of object files: cannot compile
+See \`config.log' for more details." >&5
+echo "$as_me: error: cannot compute suffix of object files: cannot compile
+See \`config.log' for more details." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+
+rm -f conftest.$ac_cv_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_objext" >&5
+echo "${ECHO_T}$ac_cv_objext" >&6
+OBJEXT=$ac_cv_objext
+ac_objext=$OBJEXT
+echo "$as_me:$LINENO: checking whether we are using the GNU C compiler" >&5
+echo $ECHO_N "checking whether we are using the GNU C compiler... $ECHO_C" >&6
+if test "${ac_cv_c_compiler_gnu+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+int
+main ()
+{
+#ifndef __GNUC__
+       choke me
+#endif
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_compiler_gnu=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_compiler_gnu=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+ac_cv_c_compiler_gnu=$ac_compiler_gnu
+
+fi
+echo "$as_me:$LINENO: result: $ac_cv_c_compiler_gnu" >&5
+echo "${ECHO_T}$ac_cv_c_compiler_gnu" >&6
+GCC=`test $ac_compiler_gnu = yes && echo yes`
+ac_test_CFLAGS=${CFLAGS+set}
+ac_save_CFLAGS=$CFLAGS
+CFLAGS="-g"
+echo "$as_me:$LINENO: checking whether $CC accepts -g" >&5
+echo $ECHO_N "checking whether $CC accepts -g... $ECHO_C" >&6
+if test "${ac_cv_prog_cc_g+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_prog_cc_g=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_prog_cc_g=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $ac_cv_prog_cc_g" >&5
+echo "${ECHO_T}$ac_cv_prog_cc_g" >&6
+if test "$ac_test_CFLAGS" = set; then
+  CFLAGS=$ac_save_CFLAGS
+elif test $ac_cv_prog_cc_g = yes; then
+  if test "$GCC" = yes; then
+    CFLAGS="-g -O2"
+  else
+    CFLAGS="-g"
+  fi
+else
+  if test "$GCC" = yes; then
+    CFLAGS="-O2"
+  else
+    CFLAGS=
+  fi
+fi
+echo "$as_me:$LINENO: checking for $CC option to accept ANSI C" >&5
+echo $ECHO_N "checking for $CC option to accept ANSI C... $ECHO_C" >&6
+if test "${ac_cv_prog_cc_stdc+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_prog_cc_stdc=no
+ac_save_CC=$CC
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <stdarg.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+/* Most of the following tests are stolen from RCS 5.7's src/conf.sh.  */
+struct buf { int x; };
+FILE * (*rcsopen) (struct buf *, struct stat *, int);
+static char *e (p, i)
+     char **p;
+     int i;
+{
+  return p[i];
+}
+static char *f (char * (*g) (char **, int), char **p, ...)
+{
+  char *s;
+  va_list v;
+  va_start (v,p);
+  s = g (p, va_arg (v,int));
+  va_end (v);
+  return s;
+}
+
+/* OSF 4.0 Compaq cc is some sort of almost-ANSI by default.  It has
+   function prototypes and stuff, but not '\xHH' hex character constants.
+   These don't provoke an error unfortunately, instead are silently treated
+   as 'x'.  The following induces an error, until -std1 is added to get
+   proper ANSI mode.  Curiously '\x00'!='x' always comes out true, for an
+   array size at least.  It's necessary to write '\x00'==0 to get something
+   that's true only with -std1.  */
+int osf4_cc_array ['\x00' == 0 ? 1 : -1];
+
+int test (int i, double x);
+struct s1 {int (*f) (int a);};
+struct s2 {int (*f) (double a);};
+int pairnames (int, char **, FILE *(*)(struct buf *, struct stat *, int), int, int);
+int argc;
+char **argv;
+int
+main ()
+{
+return f (e, argv, 0) != argv[0]  ||  f (e, argv, 1) != argv[1];
+  ;
+  return 0;
+}
+_ACEOF
+# Don't try gcc -ansi; that turns off useful extensions and
+# breaks some systems' header files.
+# AIX			-qlanglvl=ansi
+# Ultrix and OSF/1	-std1
+# HP-UX 10.20 and later	-Ae
+# HP-UX older versions	-Aa -D_HPUX_SOURCE
+# SVR4			-Xc -D__EXTENSIONS__
+for ac_arg in "" -qlanglvl=ansi -std1 -Ae "-Aa -D_HPUX_SOURCE" "-Xc -D__EXTENSIONS__"
+do
+  CC="$ac_save_CC $ac_arg"
+  rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_prog_cc_stdc=$ac_arg
+break
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.err conftest.$ac_objext
+done
+rm -f conftest.$ac_ext conftest.$ac_objext
+CC=$ac_save_CC
+
+fi
+
+case "x$ac_cv_prog_cc_stdc" in
+  x|xno)
+    echo "$as_me:$LINENO: result: none needed" >&5
+echo "${ECHO_T}none needed" >&6 ;;
+  *)
+    echo "$as_me:$LINENO: result: $ac_cv_prog_cc_stdc" >&5
+echo "${ECHO_T}$ac_cv_prog_cc_stdc" >&6
+    CC="$CC $ac_cv_prog_cc_stdc" ;;
+esac
+
+# Some people use a C++ compiler to compile C.  Since we use `exit',
+# in C++ we need to declare it.  In case someone uses the same compiler
+# for both compiling C and C++ we need to have the C++ compiler decide
+# the declaration of exit, since it's the most demanding environment.
+cat >conftest.$ac_ext <<_ACEOF
+#ifndef __cplusplus
+  choke me
+#endif
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  for ac_declaration in \
+   '' \
+   'extern "C" void std::exit (int) throw (); using std::exit;' \
+   'extern "C" void std::exit (int); using std::exit;' \
+   'extern "C" void exit (int) throw ();' \
+   'extern "C" void exit (int);' \
+   'void exit (int);'
+do
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_declaration
+#include <stdlib.h>
+int
+main ()
+{
+exit (42);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  :
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+continue
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_declaration
+int
+main ()
+{
+exit (42);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  break
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+done
+rm -f conftest*
+if test -n "$ac_declaration"; then
+  echo '#ifdef __cplusplus' >>confdefs.h
+  echo $ac_declaration      >>confdefs.h
+  echo '#endif'             >>confdefs.h
+fi
+
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+echo "$as_me:$LINENO: checking how to run the C preprocessor" >&5
+echo $ECHO_N "checking how to run the C preprocessor... $ECHO_C" >&6
+# On Suns, sometimes $CPP names a directory.
+if test -n "$CPP" && test -d "$CPP"; then
+  CPP=
+fi
+if test -z "$CPP"; then
+  if test "${ac_cv_prog_CPP+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+      # Double quotes because CPP needs to be expanded
+    for CPP in "$CC -E" "$CC -E -traditional-cpp" "/lib/cpp"
+    do
+      ac_preproc_ok=false
+for ac_c_preproc_warn_flag in '' yes
+do
+  # Use a header file that comes with gcc, so configuring glibc
+  # with a fresh cross-compiler works.
+  # Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+  # <limits.h> exists even on freestanding compilers.
+  # On the NeXT, cc -E runs the code through the compiler's parser,
+  # not just through cpp. "Syntax error" is here to catch this case.
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+		     Syntax error
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  :
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  # Broken: fails on valid input.
+continue
+fi
+rm -f conftest.err conftest.$ac_ext
+
+  # OK, works on sane cases.  Now check whether non-existent headers
+  # can be detected and how.
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <ac_nonexistent.h>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  # Broken: success on invalid input.
+continue
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  # Passes both tests.
+ac_preproc_ok=:
+break
+fi
+rm -f conftest.err conftest.$ac_ext
+
+done
+# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
+rm -f conftest.err conftest.$ac_ext
+if $ac_preproc_ok; then
+  break
+fi
+
+    done
+    ac_cv_prog_CPP=$CPP
+
+fi
+  CPP=$ac_cv_prog_CPP
+else
+  ac_cv_prog_CPP=$CPP
+fi
+echo "$as_me:$LINENO: result: $CPP" >&5
+echo "${ECHO_T}$CPP" >&6
+ac_preproc_ok=false
+for ac_c_preproc_warn_flag in '' yes
+do
+  # Use a header file that comes with gcc, so configuring glibc
+  # with a fresh cross-compiler works.
+  # Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+  # <limits.h> exists even on freestanding compilers.
+  # On the NeXT, cc -E runs the code through the compiler's parser,
+  # not just through cpp. "Syntax error" is here to catch this case.
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+		     Syntax error
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  :
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  # Broken: fails on valid input.
+continue
+fi
+rm -f conftest.err conftest.$ac_ext
+
+  # OK, works on sane cases.  Now check whether non-existent headers
+  # can be detected and how.
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <ac_nonexistent.h>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  # Broken: success on invalid input.
+continue
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  # Passes both tests.
+ac_preproc_ok=:
+break
+fi
+rm -f conftest.err conftest.$ac_ext
+
+done
+# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
+rm -f conftest.err conftest.$ac_ext
+if $ac_preproc_ok; then
+  :
+else
+  { { echo "$as_me:$LINENO: error: C preprocessor \"$CPP\" fails sanity check
+See \`config.log' for more details." >&5
+echo "$as_me: error: C preprocessor \"$CPP\" fails sanity check
+See \`config.log' for more details." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+
+ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+echo "$as_me:$LINENO: checking for egrep" >&5
+echo $ECHO_N "checking for egrep... $ECHO_C" >&6
+if test "${ac_cv_prog_egrep+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if echo a | (grep -E '(a|b)') >/dev/null 2>&1
+    then ac_cv_prog_egrep='grep -E'
+    else ac_cv_prog_egrep='egrep'
+    fi
+fi
+echo "$as_me:$LINENO: result: $ac_cv_prog_egrep" >&5
+echo "${ECHO_T}$ac_cv_prog_egrep" >&6
+ EGREP=$ac_cv_prog_egrep
+
+
+echo "$as_me:$LINENO: checking for ANSI C header files" >&5
+echo $ECHO_N "checking for ANSI C header files... $ECHO_C" >&6
+if test "${ac_cv_header_stdc+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
+#include <float.h>
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_header_stdc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_header_stdc=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+
+if test $ac_cv_header_stdc = yes; then
+  # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <string.h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "memchr" >/dev/null 2>&1; then
+  :
+else
+  ac_cv_header_stdc=no
+fi
+rm -f conftest*
+
+fi
+
+if test $ac_cv_header_stdc = yes; then
+  # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <stdlib.h>
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "free" >/dev/null 2>&1; then
+  :
+else
+  ac_cv_header_stdc=no
+fi
+rm -f conftest*
+
+fi
+
+if test $ac_cv_header_stdc = yes; then
+  # /bin/cc in Irix-4.0.5 gets non-ANSI ctype macros unless using -ansi.
+  if test "$cross_compiling" = yes; then
+  :
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <ctype.h>
+#if ((' ' & 0x0FF) == 0x020)
+# define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
+# define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c))
+#else
+# define ISLOWER(c) \
+		   (('a' <= (c) && (c) <= 'i') \
+		     || ('j' <= (c) && (c) <= 'r') \
+		     || ('s' <= (c) && (c) <= 'z'))
+# define TOUPPER(c) (ISLOWER(c) ? ((c) | 0x40) : (c))
+#endif
+
+#define XOR(e, f) (((e) && !(f)) || (!(e) && (f)))
+int
+main ()
+{
+  int i;
+  for (i = 0; i < 256; i++)
+    if (XOR (islower (i), ISLOWER (i))
+	|| toupper (i) != TOUPPER (i))
+      exit(2);
+  exit (0);
+}
+_ACEOF
+rm -f conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  :
+else
+  echo "$as_me: program exited with status $ac_status" >&5
+echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+( exit $ac_status )
+ac_cv_header_stdc=no
+fi
+rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
+fi
+fi
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_stdc" >&5
+echo "${ECHO_T}$ac_cv_header_stdc" >&6
+if test $ac_cv_header_stdc = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define STDC_HEADERS 1
+_ACEOF
+
+fi
+
+
+if test $prefix == "NONE";
+then
+	prefix=/usr/local
+fi
+
+# Extract the first word of "pdp-config", so it can be a program name with args.
+set dummy pdp-config; ac_word=$2
+echo "$as_me:$LINENO: checking for $ac_word" >&5
+echo $ECHO_N "checking for $ac_word... $ECHO_C" >&6
+if test "${ac_cv_path_PDP_CONFIG+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  case $PDP_CONFIG in
+  [\\/]* | ?:[\\/]*)
+  ac_cv_path_PDP_CONFIG="$PDP_CONFIG" # Let the user override the test with a path.
+  ;;
+  *)
+  as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for ac_exec_ext in '' $ac_executable_extensions; do
+  if $as_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
+    ac_cv_path_PDP_CONFIG="$as_dir/$ac_word$ac_exec_ext"
+    echo "$as_me:$LINENO: found $as_dir/$ac_word$ac_exec_ext" >&5
+    break 2
+  fi
+done
+done
+
+  test -z "$ac_cv_path_PDP_CONFIG" && ac_cv_path_PDP_CONFIG=""no""
+  ;;
+esac
+fi
+PDP_CONFIG=$ac_cv_path_PDP_CONFIG
+
+if test -n "$PDP_CONFIG"; then
+  echo "$as_me:$LINENO: result: $PDP_CONFIG" >&5
+echo "${ECHO_T}$PDP_CONFIG" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
+fi
+
+
+
+echo "$as_me:$LINENO: checking for sin in -lm" >&5
+echo $ECHO_N "checking for sin in -lm... $ECHO_C" >&6
+if test "${ac_cv_lib_m_sin+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lm  $LIBS"
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char sin ();
+int
+main ()
+{
+sin ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_lib_m_sin=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_lib_m_sin=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_lib_m_sin" >&5
+echo "${ECHO_T}$ac_cv_lib_m_sin" >&6
+if test $ac_cv_lib_m_sin = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_LIBM 1
+_ACEOF
+
+  LIBS="-lm $LIBS"
+
+fi
+
+
+echo "$as_me:$LINENO: checking for dlopen in -ldl" >&5
+echo $ECHO_N "checking for dlopen in -ldl... $ECHO_C" >&6
+if test "${ac_cv_lib_dl_dlopen+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-ldl  $LIBS"
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char dlopen ();
+int
+main ()
+{
+dlopen ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_lib_dl_dlopen=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_lib_dl_dlopen=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_lib_dl_dlopen" >&5
+echo "${ECHO_T}$ac_cv_lib_dl_dlopen" >&6
+if test $ac_cv_lib_dl_dlopen = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_LIBDL 1
+_ACEOF
+
+  LIBS="-ldl $LIBS"
+
+else
+  echo libdl not found. sorry... || exit 1
+fi
+
+
+
+TOPSRC=`pwd`
+PARENT=`dirname $TOPSRC`
+
+if ! test $PDP_CONFIG == "no"
+then
+	PDP_CPPFLAGS=`$PDP_CONFIG --cflags`
+
+elif test -f $PARENT/include/pdp.h
+then
+	PDP_CPPFLAGS="-I$PARENT/include"
+fi
+
+CPPFLAGS="$CPPFLAGS $PDP_CPPFLAGS"
+# On IRIX 5.3, sys/types and inttypes.h are conflicting.
+
+
+
+
+
+
+
+
+
+for ac_header in sys/types.h sys/stat.h stdlib.h string.h memory.h strings.h \
+		  inttypes.h stdint.h unistd.h
+do
+as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_header" >&5
+echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
+if eval "test \"\${$as_ac_Header+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+
+#include <$ac_header>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_Header=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_Header=no"
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
+if test `eval echo '${'$as_ac_Header'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+
+done
+
+
+if test "${ac_cv_header_m_pd_h+set}" = set; then
+  echo "$as_me:$LINENO: checking for m_pd.h" >&5
+echo $ECHO_N "checking for m_pd.h... $ECHO_C" >&6
+if test "${ac_cv_header_m_pd_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_m_pd_h" >&5
+echo "${ECHO_T}$ac_cv_header_m_pd_h" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking m_pd.h usability" >&5
+echo $ECHO_N "checking m_pd.h usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <m_pd.h>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking m_pd.h presence" >&5
+echo $ECHO_N "checking m_pd.h presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <m_pd.h>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: m_pd.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: m_pd.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: m_pd.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: m_pd.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: m_pd.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: m_pd.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: m_pd.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: m_pd.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: m_pd.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: m_pd.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: m_pd.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: m_pd.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: m_pd.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: m_pd.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: m_pd.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: m_pd.h: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ------------------------------------------ ##
+## Report this to the AC_PACKAGE_NAME lists.  ##
+## ------------------------------------------ ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for m_pd.h" >&5
+echo $ECHO_N "checking for m_pd.h... $ECHO_C" >&6
+if test "${ac_cv_header_m_pd_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_header_m_pd_h=$ac_header_preproc
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_m_pd_h" >&5
+echo "${ECHO_T}$ac_cv_header_m_pd_h" >&6
+
+fi
+if test $ac_cv_header_m_pd_h = yes; then
+  :
+else
+  PD_OK=no
+fi
+
+
+if test "${ac_cv_header_pdp_h+set}" = set; then
+  echo "$as_me:$LINENO: checking for pdp.h" >&5
+echo $ECHO_N "checking for pdp.h... $ECHO_C" >&6
+if test "${ac_cv_header_pdp_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_pdp_h" >&5
+echo "${ECHO_T}$ac_cv_header_pdp_h" >&6
+else
+  # Is the header compilable?
+echo "$as_me:$LINENO: checking pdp.h usability" >&5
+echo $ECHO_N "checking pdp.h usability... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+$ac_includes_default
+#include <pdp.h>
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+	 { ac_try='test -z "$ac_c_werror_flag"			 || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+	 { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_header_compiler=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_header_compiler=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
+echo "${ECHO_T}$ac_header_compiler" >&6
+
+# Is the header present?
+echo "$as_me:$LINENO: checking pdp.h presence" >&5
+echo $ECHO_N "checking pdp.h presence... $ECHO_C" >&6
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <pdp.h>
+_ACEOF
+if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
+  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } >/dev/null; then
+  if test -s conftest.err; then
+    ac_cpp_err=$ac_c_preproc_warn_flag
+    ac_cpp_err=$ac_cpp_err$ac_c_werror_flag
+  else
+    ac_cpp_err=
+  fi
+else
+  ac_cpp_err=yes
+fi
+if test -z "$ac_cpp_err"; then
+  ac_header_preproc=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+  ac_header_preproc=no
+fi
+rm -f conftest.err conftest.$ac_ext
+echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
+echo "${ECHO_T}$ac_header_preproc" >&6
+
+# So?  What about this header?
+case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
+  yes:no: )
+    { echo "$as_me:$LINENO: WARNING: pdp.h: accepted by the compiler, rejected by the preprocessor!" >&5
+echo "$as_me: WARNING: pdp.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
+    { echo "$as_me:$LINENO: WARNING: pdp.h: proceeding with the compiler's result" >&5
+echo "$as_me: WARNING: pdp.h: proceeding with the compiler's result" >&2;}
+    ac_header_preproc=yes
+    ;;
+  no:yes:* )
+    { echo "$as_me:$LINENO: WARNING: pdp.h: present but cannot be compiled" >&5
+echo "$as_me: WARNING: pdp.h: present but cannot be compiled" >&2;}
+    { echo "$as_me:$LINENO: WARNING: pdp.h:     check for missing prerequisite headers?" >&5
+echo "$as_me: WARNING: pdp.h:     check for missing prerequisite headers?" >&2;}
+    { echo "$as_me:$LINENO: WARNING: pdp.h: see the Autoconf documentation" >&5
+echo "$as_me: WARNING: pdp.h: see the Autoconf documentation" >&2;}
+    { echo "$as_me:$LINENO: WARNING: pdp.h:     section \"Present But Cannot Be Compiled\"" >&5
+echo "$as_me: WARNING: pdp.h:     section \"Present But Cannot Be Compiled\"" >&2;}
+    { echo "$as_me:$LINENO: WARNING: pdp.h: proceeding with the preprocessor's result" >&5
+echo "$as_me: WARNING: pdp.h: proceeding with the preprocessor's result" >&2;}
+    { echo "$as_me:$LINENO: WARNING: pdp.h: in the future, the compiler will take precedence" >&5
+echo "$as_me: WARNING: pdp.h: in the future, the compiler will take precedence" >&2;}
+    (
+      cat <<\_ASBOX
+## ------------------------------------------ ##
+## Report this to the AC_PACKAGE_NAME lists.  ##
+## ------------------------------------------ ##
+_ASBOX
+    ) |
+      sed "s/^/$as_me: WARNING:     /" >&2
+    ;;
+esac
+echo "$as_me:$LINENO: checking for pdp.h" >&5
+echo $ECHO_N "checking for pdp.h... $ECHO_C" >&6
+if test "${ac_cv_header_pdp_h+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_cv_header_pdp_h=$ac_header_preproc
+fi
+echo "$as_me:$LINENO: result: $ac_cv_header_pdp_h" >&5
+echo "${ECHO_T}$ac_cv_header_pdp_h" >&6
+
+fi
+if test $ac_cv_header_pdp_h = yes; then
+  :
+else
+  PDP_OK=no
+fi
+
+
+
+if test PD_OK == "no";
+then
+	echo "WARNING: m_pd.h not found. Is PD installed?
+	echo "WARNING: You can ignore this warning if you have set the PD_CFLAGS manually in Makefile.config.in
+fi
+
+if test PDP_OK == "no";
+then
+	echo "WARNING: pdp.h not found. Is PDP installed?
+	echo "WARNING: You can ignore this warning if you have set the PDP_CFLAGS manually in Makefile.config.in
+fi
+
+CPPFLAGS="$CPPFLAGS $PDFLAGS $PDPFLAGS -I$TOPSRC/include"
+
+DEFAULT_RULES_LIB=$prefix/lib/scaf/default.scafo;
+
+
+          ac_config_files="$ac_config_files Makefile.config"
+
+cat >confcache <<\_ACEOF
+# This file is a shell script that caches the results of configure
+# tests run on this system so they can be shared between configure
+# scripts and configure runs, see configure's option --config-cache.
+# It is not useful on other systems.  If it contains results you don't
+# want to keep, you may remove or edit it.
+#
+# config.status only pays attention to the cache file if you give it
+# the --recheck option to rerun configure.
+#
+# `ac_cv_env_foo' variables (set or unset) will be overridden when
+# loading this file, other *unset* `ac_cv_foo' will be assigned the
+# following values.
+
+_ACEOF
+
+# The following way of writing the cache mishandles newlines in values,
+# but we know of no workaround that is simple, portable, and efficient.
+# So, don't put newlines in cache variables' values.
+# Ultrix sh set writes to stderr and can't be redirected directly,
+# and sets the high bit in the cache file unless we assign to the vars.
+{
+  (set) 2>&1 |
+    case `(ac_space=' '; set | grep ac_space) 2>&1` in
+    *ac_space=\ *)
+      # `set' does not quote correctly, so add quotes (double-quote
+      # substitution turns \\\\ into \\, and sed turns \\ into \).
+      sed -n \
+	"s/'/'\\\\''/g;
+	  s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='\\2'/p"
+      ;;
+    *)
+      # `set' quotes correctly as required by POSIX, so do not add quotes.
+      sed -n \
+	"s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1=\\2/p"
+      ;;
+    esac;
+} |
+  sed '
+     t clear
+     : clear
+     s/^\([^=]*\)=\(.*[{}].*\)$/test "${\1+set}" = set || &/
+     t end
+     /^ac_cv_env/!s/^\([^=]*\)=\(.*\)$/\1=${\1=\2}/
+     : end' >>confcache
+if diff $cache_file confcache >/dev/null 2>&1; then :; else
+  if test -w $cache_file; then
+    test "x$cache_file" != "x/dev/null" && echo "updating cache $cache_file"
+    cat confcache >$cache_file
+  else
+    echo "not updating unwritable cache $cache_file"
+  fi
+fi
+rm -f confcache
+
+test "x$prefix" = xNONE && prefix=$ac_default_prefix
+# Let make expand exec_prefix.
+test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'
+
+# VPATH may cause trouble with some makes, so we remove $(srcdir),
+# ${srcdir} and @srcdir@ from VPATH if srcdir is ".", strip leading and
+# trailing colons and then remove the whole line if VPATH becomes empty
+# (actually we leave an empty line to preserve line numbers).
+if test "x$srcdir" = x.; then
+  ac_vpsub='/^[	 ]*VPATH[	 ]*=/{
+s/:*\$(srcdir):*/:/;
+s/:*\${srcdir}:*/:/;
+s/:*@srcdir@:*/:/;
+s/^\([^=]*=[	 ]*\):*/\1/;
+s/:*$//;
+s/^[^=]*=[	 ]*$//;
+}'
+fi
+
+# Transform confdefs.h into DEFS.
+# Protect against shell expansion while executing Makefile rules.
+# Protect against Makefile macro expansion.
+#
+# If the first sed substitution is executed (which looks for macros that
+# take arguments), then we branch to the quote section.  Otherwise,
+# look for a macro that doesn't take arguments.
+cat >confdef2opt.sed <<\_ACEOF
+t clear
+: clear
+s,^[	 ]*#[	 ]*define[	 ][	 ]*\([^	 (][^	 (]*([^)]*)\)[	 ]*\(.*\),-D\1=\2,g
+t quote
+s,^[	 ]*#[	 ]*define[	 ][	 ]*\([^	 ][^	 ]*\)[	 ]*\(.*\),-D\1=\2,g
+t quote
+d
+: quote
+s,[	 `~#$^&*(){}\\|;'"<>?],\\&,g
+s,\[,\\&,g
+s,\],\\&,g
+s,\$,$$,g
+p
+_ACEOF
+# We use echo to avoid assuming a particular line-breaking character.
+# The extra dot is to prevent the shell from consuming trailing
+# line-breaks from the sub-command output.  A line-break within
+# single-quotes doesn't work because, if this script is created in a
+# platform that uses two characters for line-breaks (e.g., DOS), tr
+# would break.
+ac_LF_and_DOT=`echo; echo .`
+DEFS=`sed -n -f confdef2opt.sed confdefs.h | tr "$ac_LF_and_DOT" ' .'`
+rm -f confdef2opt.sed
+
+
+ac_libobjs=
+ac_ltlibobjs=
+for ac_i in : $LIBOBJS; do test "x$ac_i" = x: && continue
+  # 1. Remove the extension, and $U if already installed.
+  ac_i=`echo "$ac_i" |
+	 sed 's/\$U\././;s/\.o$//;s/\.obj$//'`
+  # 2. Add them.
+  ac_libobjs="$ac_libobjs $ac_i\$U.$ac_objext"
+  ac_ltlibobjs="$ac_ltlibobjs $ac_i"'$U.lo'
+done
+LIBOBJS=$ac_libobjs
+
+LTLIBOBJS=$ac_ltlibobjs
+
+
+
+: ${CONFIG_STATUS=./config.status}
+ac_clean_files_save=$ac_clean_files
+ac_clean_files="$ac_clean_files $CONFIG_STATUS"
+{ echo "$as_me:$LINENO: creating $CONFIG_STATUS" >&5
+echo "$as_me: creating $CONFIG_STATUS" >&6;}
+cat >$CONFIG_STATUS <<_ACEOF
+#! $SHELL
+# Generated by $as_me.
+# Run this file to recreate the current configuration.
+# Compiler output produced by configure, useful for debugging
+# configure, is in config.log if it exists.
+
+debug=false
+ac_cs_recheck=false
+ac_cs_silent=false
+SHELL=\${CONFIG_SHELL-$SHELL}
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF
+## --------------------- ##
+## M4sh Initialization.  ##
+## --------------------- ##
+
+# Be Bourne compatible
+if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then
+  emulate sh
+  NULLCMD=:
+  # Zsh 3.x and 4.x performs word splitting on ${1+"$@"}, which
+  # is contrary to our usage.  Disable this feature.
+  alias -g '${1+"$@"}'='"$@"'
+elif test -n "${BASH_VERSION+set}" && (set -o posix) >/dev/null 2>&1; then
+  set -o posix
+fi
+DUALCASE=1; export DUALCASE # for MKS sh
+
+# Support unset when possible.
+if ( (MAIL=60; unset MAIL) || exit) >/dev/null 2>&1; then
+  as_unset=unset
+else
+  as_unset=false
+fi
+
+
+# Work around bugs in pre-3.0 UWIN ksh.
+$as_unset ENV MAIL MAILPATH
+PS1='$ '
+PS2='> '
+PS4='+ '
+
+# NLS nuisances.
+for as_var in \
+  LANG LANGUAGE LC_ADDRESS LC_ALL LC_COLLATE LC_CTYPE LC_IDENTIFICATION \
+  LC_MEASUREMENT LC_MESSAGES LC_MONETARY LC_NAME LC_NUMERIC LC_PAPER \
+  LC_TELEPHONE LC_TIME
+do
+  if (set +x; test -z "`(eval $as_var=C; export $as_var) 2>&1`"); then
+    eval $as_var=C; export $as_var
+  else
+    $as_unset $as_var
+  fi
+done
+
+# Required to use basename.
+if expr a : '\(a\)' >/dev/null 2>&1; then
+  as_expr=expr
+else
+  as_expr=false
+fi
+
+if (basename /) >/dev/null 2>&1 && test "X`basename / 2>&1`" = "X/"; then
+  as_basename=basename
+else
+  as_basename=false
+fi
+
+
+# Name of the executable.
+as_me=`$as_basename "$0" ||
+$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \
+	 X"$0" : 'X\(//\)$' \| \
+	 X"$0" : 'X\(/\)$' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X/"$0" |
+    sed '/^.*\/\([^/][^/]*\)\/*$/{ s//\1/; q; }
+  	  /^X\/\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\/\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+
+
+# PATH needs CR, and LINENO needs CR and PATH.
+# Avoid depending upon Character Ranges.
+as_cr_letters='abcdefghijklmnopqrstuvwxyz'
+as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ'
+as_cr_Letters=$as_cr_letters$as_cr_LETTERS
+as_cr_digits='0123456789'
+as_cr_alnum=$as_cr_Letters$as_cr_digits
+
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+  echo "#! /bin/sh" >conf$$.sh
+  echo  "exit 0"   >>conf$$.sh
+  chmod +x conf$$.sh
+  if (PATH="/nonexistent;."; conf$$.sh) >/dev/null 2>&1; then
+    PATH_SEPARATOR=';'
+  else
+    PATH_SEPARATOR=:
+  fi
+  rm -f conf$$.sh
+fi
+
+
+  as_lineno_1=$LINENO
+  as_lineno_2=$LINENO
+  as_lineno_3=`(expr $as_lineno_1 + 1) 2>/dev/null`
+  test "x$as_lineno_1" != "x$as_lineno_2" &&
+  test "x$as_lineno_3"  = "x$as_lineno_2"  || {
+  # Find who we are.  Look in the path if we contain no path at all
+  # relative or not.
+  case $0 in
+    *[\\/]* ) as_myself=$0 ;;
+    *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in $PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  test -r "$as_dir/$0" && as_myself=$as_dir/$0 && break
+done
+
+       ;;
+  esac
+  # We did not find ourselves, most probably we were run as `sh COMMAND'
+  # in which case we are not to be found in the path.
+  if test "x$as_myself" = x; then
+    as_myself=$0
+  fi
+  if test ! -f "$as_myself"; then
+    { { echo "$as_me:$LINENO: error: cannot find myself; rerun with an absolute path" >&5
+echo "$as_me: error: cannot find myself; rerun with an absolute path" >&2;}
+   { (exit 1); exit 1; }; }
+  fi
+  case $CONFIG_SHELL in
+  '')
+    as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
+for as_dir in /bin$PATH_SEPARATOR/usr/bin$PATH_SEPARATOR$PATH
+do
+  IFS=$as_save_IFS
+  test -z "$as_dir" && as_dir=.
+  for as_base in sh bash ksh sh5; do
+	 case $as_dir in
+	 /*)
+	   if ("$as_dir/$as_base" -c '
+  as_lineno_1=$LINENO
+  as_lineno_2=$LINENO
+  as_lineno_3=`(expr $as_lineno_1 + 1) 2>/dev/null`
+  test "x$as_lineno_1" != "x$as_lineno_2" &&
+  test "x$as_lineno_3"  = "x$as_lineno_2" ') 2>/dev/null; then
+	     $as_unset BASH_ENV || test "${BASH_ENV+set}" != set || { BASH_ENV=; export BASH_ENV; }
+	     $as_unset ENV || test "${ENV+set}" != set || { ENV=; export ENV; }
+	     CONFIG_SHELL=$as_dir/$as_base
+	     export CONFIG_SHELL
+	     exec "$CONFIG_SHELL" "$0" ${1+"$@"}
+	   fi;;
+	 esac
+       done
+done
+;;
+  esac
+
+  # Create $as_me.lineno as a copy of $as_myself, but with $LINENO
+  # uniformly replaced by the line number.  The first 'sed' inserts a
+  # line-number line before each line; the second 'sed' does the real
+  # work.  The second script uses 'N' to pair each line-number line
+  # with the numbered line, and appends trailing '-' during
+  # substitution so that $LINENO is not a special case at line end.
+  # (Raja R Harinath suggested sed '=', and Paul Eggert wrote the
+  # second 'sed' script.  Blame Lee E. McMahon for sed's syntax.  :-)
+  sed '=' <$as_myself |
+    sed '
+      N
+      s,$,-,
+      : loop
+      s,^\(['$as_cr_digits']*\)\(.*\)[$]LINENO\([^'$as_cr_alnum'_]\),\1\2\1\3,
+      t loop
+      s,-$,,
+      s,^['$as_cr_digits']*\n,,
+    ' >$as_me.lineno &&
+  chmod +x $as_me.lineno ||
+    { { echo "$as_me:$LINENO: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&5
+echo "$as_me: error: cannot create $as_me.lineno; rerun with a POSIX shell" >&2;}
+   { (exit 1); exit 1; }; }
+
+  # Don't try to exec as it changes $[0], causing all sort of problems
+  # (the dirname of $[0] is not the place where we might find the
+  # original and so on.  Autoconf is especially sensible to this).
+  . ./$as_me.lineno
+  # Exit status is that of the last command.
+  exit
+}
+
+
+case `echo "testing\c"; echo 1,2,3`,`echo -n testing; echo 1,2,3` in
+  *c*,-n*) ECHO_N= ECHO_C='
+' ECHO_T='	' ;;
+  *c*,*  ) ECHO_N=-n ECHO_C= ECHO_T= ;;
+  *)       ECHO_N= ECHO_C='\c' ECHO_T= ;;
+esac
+
+if expr a : '\(a\)' >/dev/null 2>&1; then
+  as_expr=expr
+else
+  as_expr=false
+fi
+
+rm -f conf$$ conf$$.exe conf$$.file
+echo >conf$$.file
+if ln -s conf$$.file conf$$ 2>/dev/null; then
+  # We could just check for DJGPP; but this test a) works b) is more generic
+  # and c) will remain valid once DJGPP supports symlinks (DJGPP 2.04).
+  if test -f conf$$.exe; then
+    # Don't use ln at all; we don't have any links
+    as_ln_s='cp -p'
+  else
+    as_ln_s='ln -s'
+  fi
+elif ln conf$$.file conf$$ 2>/dev/null; then
+  as_ln_s=ln
+else
+  as_ln_s='cp -p'
+fi
+rm -f conf$$ conf$$.exe conf$$.file
+
+if mkdir -p . 2>/dev/null; then
+  as_mkdir_p=:
+else
+  test -d ./-p && rmdir ./-p
+  as_mkdir_p=false
+fi
+
+as_executable_p="test -f"
+
+# Sed expression to map a string onto a valid CPP name.
+as_tr_cpp="eval sed 'y%*$as_cr_letters%P$as_cr_LETTERS%;s%[^_$as_cr_alnum]%_%g'"
+
+# Sed expression to map a string onto a valid variable name.
+as_tr_sh="eval sed 'y%*+%pp%;s%[^_$as_cr_alnum]%_%g'"
+
+
+# IFS
+# We need space, tab and new line, in precisely that order.
+as_nl='
+'
+IFS=" 	$as_nl"
+
+# CDPATH.
+$as_unset CDPATH
+
+exec 6>&1
+
+# Open the log real soon, to keep \$[0] and so on meaningful, and to
+# report actual input values of CONFIG_FILES etc. instead of their
+# values after options handling.  Logging --version etc. is OK.
+exec 5>>config.log
+{
+  echo
+  sed 'h;s/./-/g;s/^.../## /;s/...$/ ##/;p;x;p;x' <<_ASBOX
+## Running $as_me. ##
+_ASBOX
+} >&5
+cat >&5 <<_CSEOF
+
+This file was extended by $as_me, which was
+generated by GNU Autoconf 2.59.  Invocation command line was
+
+  CONFIG_FILES    = $CONFIG_FILES
+  CONFIG_HEADERS  = $CONFIG_HEADERS
+  CONFIG_LINKS    = $CONFIG_LINKS
+  CONFIG_COMMANDS = $CONFIG_COMMANDS
+  $ $0 $@
+
+_CSEOF
+echo "on `(hostname || uname -n) 2>/dev/null | sed 1q`" >&5
+echo >&5
+_ACEOF
+
+# Files that config.status was made for.
+if test -n "$ac_config_files"; then
+  echo "config_files=\"$ac_config_files\"" >>$CONFIG_STATUS
+fi
+
+if test -n "$ac_config_headers"; then
+  echo "config_headers=\"$ac_config_headers\"" >>$CONFIG_STATUS
+fi
+
+if test -n "$ac_config_links"; then
+  echo "config_links=\"$ac_config_links\"" >>$CONFIG_STATUS
+fi
+
+if test -n "$ac_config_commands"; then
+  echo "config_commands=\"$ac_config_commands\"" >>$CONFIG_STATUS
+fi
+
+cat >>$CONFIG_STATUS <<\_ACEOF
+
+ac_cs_usage="\
+\`$as_me' instantiates files from templates according to the
+current configuration.
+
+Usage: $0 [OPTIONS] [FILE]...
+
+  -h, --help       print this help, then exit
+  -V, --version    print version number, then exit
+  -q, --quiet      do not print progress messages
+  -d, --debug      don't remove temporary files
+      --recheck    update $as_me by reconfiguring in the same conditions
+  --file=FILE[:TEMPLATE]
+		   instantiate the configuration file FILE
+
+Configuration files:
+$config_files
+
+Report bugs to <bug-autoconf@gnu.org>."
+_ACEOF
+
+cat >>$CONFIG_STATUS <<_ACEOF
+ac_cs_version="\\
+config.status
+configured by $0, generated by GNU Autoconf 2.59,
+  with options \\"`echo "$ac_configure_args" | sed 's/[\\""\`\$]/\\\\&/g'`\\"
+
+Copyright (C) 2003 Free Software Foundation, Inc.
+This config.status script is free software; the Free Software Foundation
+gives unlimited permission to copy, distribute and modify it."
+srcdir=$srcdir
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF
+# If no file are specified by the user, then we need to provide default
+# value.  By we need to know if files were specified by the user.
+ac_need_defaults=:
+while test $# != 0
+do
+  case $1 in
+  --*=*)
+    ac_option=`expr "x$1" : 'x\([^=]*\)='`
+    ac_optarg=`expr "x$1" : 'x[^=]*=\(.*\)'`
+    ac_shift=:
+    ;;
+  -*)
+    ac_option=$1
+    ac_optarg=$2
+    ac_shift=shift
+    ;;
+  *) # This is not an option, so the user has probably given explicit
+     # arguments.
+     ac_option=$1
+     ac_need_defaults=false;;
+  esac
+
+  case $ac_option in
+  # Handling of the options.
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF
+  -recheck | --recheck | --rechec | --reche | --rech | --rec | --re | --r)
+    ac_cs_recheck=: ;;
+  --version | --vers* | -V )
+    echo "$ac_cs_version"; exit 0 ;;
+  --he | --h)
+    # Conflict between --help and --header
+    { { echo "$as_me:$LINENO: error: ambiguous option: $1
+Try \`$0 --help' for more information." >&5
+echo "$as_me: error: ambiguous option: $1
+Try \`$0 --help' for more information." >&2;}
+   { (exit 1); exit 1; }; };;
+  --help | --hel | -h )
+    echo "$ac_cs_usage"; exit 0 ;;
+  --debug | --d* | -d )
+    debug=: ;;
+  --file | --fil | --fi | --f )
+    $ac_shift
+    CONFIG_FILES="$CONFIG_FILES $ac_optarg"
+    ac_need_defaults=false;;
+  --header | --heade | --head | --hea )
+    $ac_shift
+    CONFIG_HEADERS="$CONFIG_HEADERS $ac_optarg"
+    ac_need_defaults=false;;
+  -q | -quiet | --quiet | --quie | --qui | --qu | --q \
+  | -silent | --silent | --silen | --sile | --sil | --si | --s)
+    ac_cs_silent=: ;;
+
+  # This is an error.
+  -*) { { echo "$as_me:$LINENO: error: unrecognized option: $1
+Try \`$0 --help' for more information." >&5
+echo "$as_me: error: unrecognized option: $1
+Try \`$0 --help' for more information." >&2;}
+   { (exit 1); exit 1; }; } ;;
+
+  *) ac_config_targets="$ac_config_targets $1" ;;
+
+  esac
+  shift
+done
+
+ac_configure_extra_args=
+
+if $ac_cs_silent; then
+  exec 6>/dev/null
+  ac_configure_extra_args="$ac_configure_extra_args --silent"
+fi
+
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF
+if \$ac_cs_recheck; then
+  echo "running $SHELL $0 " $ac_configure_args \$ac_configure_extra_args " --no-create --no-recursion" >&6
+  exec $SHELL $0 $ac_configure_args \$ac_configure_extra_args --no-create --no-recursion
+fi
+
+_ACEOF
+
+
+
+
+
+cat >>$CONFIG_STATUS <<\_ACEOF
+for ac_config_target in $ac_config_targets
+do
+  case "$ac_config_target" in
+  # Handling of arguments.
+  "Makefile.config" ) CONFIG_FILES="$CONFIG_FILES Makefile.config" ;;
+  *) { { echo "$as_me:$LINENO: error: invalid argument: $ac_config_target" >&5
+echo "$as_me: error: invalid argument: $ac_config_target" >&2;}
+   { (exit 1); exit 1; }; };;
+  esac
+done
+
+# If the user did not use the arguments to specify the items to instantiate,
+# then the envvar interface is used.  Set only those that are not.
+# We use the long form for the default assignment because of an extremely
+# bizarre bug on SunOS 4.1.3.
+if $ac_need_defaults; then
+  test "${CONFIG_FILES+set}" = set || CONFIG_FILES=$config_files
+fi
+
+# Have a temporary directory for convenience.  Make it in the build tree
+# simply because there is no reason to put it here, and in addition,
+# creating and moving files from /tmp can sometimes cause problems.
+# Create a temporary directory, and hook for its removal unless debugging.
+$debug ||
+{
+  trap 'exit_status=$?; rm -rf $tmp && exit $exit_status' 0
+  trap '{ (exit 1); exit 1; }' 1 2 13 15
+}
+
+# Create a (secure) tmp directory for tmp files.
+
+{
+  tmp=`(umask 077 && mktemp -d -q "./confstatXXXXXX") 2>/dev/null` &&
+  test -n "$tmp" && test -d "$tmp"
+}  ||
+{
+  tmp=./confstat$$-$RANDOM
+  (umask 077 && mkdir $tmp)
+} ||
+{
+   echo "$me: cannot create a temporary directory in ." >&2
+   { (exit 1); exit 1; }
+}
+
+_ACEOF
+
+cat >>$CONFIG_STATUS <<_ACEOF
+
+#
+# CONFIG_FILES section.
+#
+
+# No need to generate the scripts if there are no CONFIG_FILES.
+# This happens for instance when ./config.status config.h
+if test -n "\$CONFIG_FILES"; then
+  # Protect against being on the right side of a sed subst in config.status.
+  sed 's/,@/@@/; s/@,/@@/; s/,;t t\$/@;t t/; /@;t t\$/s/[\\\\&,]/\\\\&/g;
+   s/@@/,@/; s/@@/@,/; s/@;t t\$/,;t t/' >\$tmp/subs.sed <<\\CEOF
+s,@SHELL@,$SHELL,;t t
+s,@PATH_SEPARATOR@,$PATH_SEPARATOR,;t t
+s,@PACKAGE_NAME@,$PACKAGE_NAME,;t t
+s,@PACKAGE_TARNAME@,$PACKAGE_TARNAME,;t t
+s,@PACKAGE_VERSION@,$PACKAGE_VERSION,;t t
+s,@PACKAGE_STRING@,$PACKAGE_STRING,;t t
+s,@PACKAGE_BUGREPORT@,$PACKAGE_BUGREPORT,;t t
+s,@exec_prefix@,$exec_prefix,;t t
+s,@prefix@,$prefix,;t t
+s,@program_transform_name@,$program_transform_name,;t t
+s,@bindir@,$bindir,;t t
+s,@sbindir@,$sbindir,;t t
+s,@libexecdir@,$libexecdir,;t t
+s,@datadir@,$datadir,;t t
+s,@sysconfdir@,$sysconfdir,;t t
+s,@sharedstatedir@,$sharedstatedir,;t t
+s,@localstatedir@,$localstatedir,;t t
+s,@libdir@,$libdir,;t t
+s,@includedir@,$includedir,;t t
+s,@oldincludedir@,$oldincludedir,;t t
+s,@infodir@,$infodir,;t t
+s,@mandir@,$mandir,;t t
+s,@build_alias@,$build_alias,;t t
+s,@host_alias@,$host_alias,;t t
+s,@target_alias@,$target_alias,;t t
+s,@DEFS@,$DEFS,;t t
+s,@ECHO_C@,$ECHO_C,;t t
+s,@ECHO_N@,$ECHO_N,;t t
+s,@ECHO_T@,$ECHO_T,;t t
+s,@LIBS@,$LIBS,;t t
+s,@CC@,$CC,;t t
+s,@CFLAGS@,$CFLAGS,;t t
+s,@LDFLAGS@,$LDFLAGS,;t t
+s,@CPPFLAGS@,$CPPFLAGS,;t t
+s,@ac_ct_CC@,$ac_ct_CC,;t t
+s,@EXEEXT@,$EXEEXT,;t t
+s,@OBJEXT@,$OBJEXT,;t t
+s,@CPP@,$CPP,;t t
+s,@EGREP@,$EGREP,;t t
+s,@PDP_CONFIG@,$PDP_CONFIG,;t t
+s,@DEFAULT_RULES_LIB@,$DEFAULT_RULES_LIB,;t t
+s,@LIBOBJS@,$LIBOBJS,;t t
+s,@LTLIBOBJS@,$LTLIBOBJS,;t t
+CEOF
+
+_ACEOF
+
+  cat >>$CONFIG_STATUS <<\_ACEOF
+  # Split the substitutions into bite-sized pieces for seds with
+  # small command number limits, like on Digital OSF/1 and HP-UX.
+  ac_max_sed_lines=48
+  ac_sed_frag=1 # Number of current file.
+  ac_beg=1 # First line for current file.
+  ac_end=$ac_max_sed_lines # Line after last line for current file.
+  ac_more_lines=:
+  ac_sed_cmds=
+  while $ac_more_lines; do
+    if test $ac_beg -gt 1; then
+      sed "1,${ac_beg}d; ${ac_end}q" $tmp/subs.sed >$tmp/subs.frag
+    else
+      sed "${ac_end}q" $tmp/subs.sed >$tmp/subs.frag
+    fi
+    if test ! -s $tmp/subs.frag; then
+      ac_more_lines=false
+    else
+      # The purpose of the label and of the branching condition is to
+      # speed up the sed processing (if there are no `@' at all, there
+      # is no need to browse any of the substitutions).
+      # These are the two extra sed commands mentioned above.
+      (echo ':t
+  /@[a-zA-Z_][a-zA-Z_0-9]*@/!b' && cat $tmp/subs.frag) >$tmp/subs-$ac_sed_frag.sed
+      if test -z "$ac_sed_cmds"; then
+	ac_sed_cmds="sed -f $tmp/subs-$ac_sed_frag.sed"
+      else
+	ac_sed_cmds="$ac_sed_cmds | sed -f $tmp/subs-$ac_sed_frag.sed"
+      fi
+      ac_sed_frag=`expr $ac_sed_frag + 1`
+      ac_beg=$ac_end
+      ac_end=`expr $ac_end + $ac_max_sed_lines`
+    fi
+  done
+  if test -z "$ac_sed_cmds"; then
+    ac_sed_cmds=cat
+  fi
+fi # test -n "$CONFIG_FILES"
+
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF
+for ac_file in : $CONFIG_FILES; do test "x$ac_file" = x: && continue
+  # Support "outfile[:infile[:infile...]]", defaulting infile="outfile.in".
+  case $ac_file in
+  - | *:- | *:-:* ) # input from stdin
+	cat >$tmp/stdin
+	ac_file_in=`echo "$ac_file" | sed 's,[^:]*:,,'`
+	ac_file=`echo "$ac_file" | sed 's,:.*,,'` ;;
+  *:* ) ac_file_in=`echo "$ac_file" | sed 's,[^:]*:,,'`
+	ac_file=`echo "$ac_file" | sed 's,:.*,,'` ;;
+  * )   ac_file_in=$ac_file.in ;;
+  esac
+
+  # Compute @srcdir@, @top_srcdir@, and @INSTALL@ for subdirectories.
+  ac_dir=`(dirname "$ac_file") 2>/dev/null ||
+$as_expr X"$ac_file" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$ac_file" : 'X\(//\)[^/]' \| \
+	 X"$ac_file" : 'X\(//\)$' \| \
+	 X"$ac_file" : 'X\(/\)' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X"$ac_file" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+  { if $as_mkdir_p; then
+    mkdir -p "$ac_dir"
+  else
+    as_dir="$ac_dir"
+    as_dirs=
+    while test ! -d "$as_dir"; do
+      as_dirs="$as_dir $as_dirs"
+      as_dir=`(dirname "$as_dir") 2>/dev/null ||
+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
+	 X"$as_dir" : 'X\(//\)[^/]' \| \
+	 X"$as_dir" : 'X\(//\)$' \| \
+	 X"$as_dir" : 'X\(/\)' \| \
+	 .     : '\(.\)' 2>/dev/null ||
+echo X"$as_dir" |
+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{ s//\1/; q; }
+  	  /^X\(\/\/\)[^/].*/{ s//\1/; q; }
+  	  /^X\(\/\/\)$/{ s//\1/; q; }
+  	  /^X\(\/\).*/{ s//\1/; q; }
+  	  s/.*/./; q'`
+    done
+    test ! -n "$as_dirs" || mkdir $as_dirs
+  fi || { { echo "$as_me:$LINENO: error: cannot create directory \"$ac_dir\"" >&5
+echo "$as_me: error: cannot create directory \"$ac_dir\"" >&2;}
+   { (exit 1); exit 1; }; }; }
+
+  ac_builddir=.
+
+if test "$ac_dir" != .; then
+  ac_dir_suffix=/`echo "$ac_dir" | sed 's,^\.[\\/],,'`
+  # A "../" for each directory in $ac_dir_suffix.
+  ac_top_builddir=`echo "$ac_dir_suffix" | sed 's,/[^\\/]*,../,g'`
+else
+  ac_dir_suffix= ac_top_builddir=
+fi
+
+case $srcdir in
+  .)  # No --srcdir option.  We are building in place.
+    ac_srcdir=.
+    if test -z "$ac_top_builddir"; then
+       ac_top_srcdir=.
+    else
+       ac_top_srcdir=`echo $ac_top_builddir | sed 's,/$,,'`
+    fi ;;
+  [\\/]* | ?:[\\/]* )  # Absolute path.
+    ac_srcdir=$srcdir$ac_dir_suffix;
+    ac_top_srcdir=$srcdir ;;
+  *) # Relative path.
+    ac_srcdir=$ac_top_builddir$srcdir$ac_dir_suffix
+    ac_top_srcdir=$ac_top_builddir$srcdir ;;
+esac
+
+# Do not use `cd foo && pwd` to compute absolute paths, because
+# the directories may not exist.
+case `pwd` in
+.) ac_abs_builddir="$ac_dir";;
+*)
+  case "$ac_dir" in
+  .) ac_abs_builddir=`pwd`;;
+  [\\/]* | ?:[\\/]* ) ac_abs_builddir="$ac_dir";;
+  *) ac_abs_builddir=`pwd`/"$ac_dir";;
+  esac;;
+esac
+case $ac_abs_builddir in
+.) ac_abs_top_builddir=${ac_top_builddir}.;;
+*)
+  case ${ac_top_builddir}. in
+  .) ac_abs_top_builddir=$ac_abs_builddir;;
+  [\\/]* | ?:[\\/]* ) ac_abs_top_builddir=${ac_top_builddir}.;;
+  *) ac_abs_top_builddir=$ac_abs_builddir/${ac_top_builddir}.;;
+  esac;;
+esac
+case $ac_abs_builddir in
+.) ac_abs_srcdir=$ac_srcdir;;
+*)
+  case $ac_srcdir in
+  .) ac_abs_srcdir=$ac_abs_builddir;;
+  [\\/]* | ?:[\\/]* ) ac_abs_srcdir=$ac_srcdir;;
+  *) ac_abs_srcdir=$ac_abs_builddir/$ac_srcdir;;
+  esac;;
+esac
+case $ac_abs_builddir in
+.) ac_abs_top_srcdir=$ac_top_srcdir;;
+*)
+  case $ac_top_srcdir in
+  .) ac_abs_top_srcdir=$ac_abs_builddir;;
+  [\\/]* | ?:[\\/]* ) ac_abs_top_srcdir=$ac_top_srcdir;;
+  *) ac_abs_top_srcdir=$ac_abs_builddir/$ac_top_srcdir;;
+  esac;;
+esac
+
+
+
+  # Let's still pretend it is `configure' which instantiates (i.e., don't
+  # use $as_me), people would be surprised to read:
+  #    /* config.h.  Generated by config.status.  */
+  if test x"$ac_file" = x-; then
+    configure_input=
+  else
+    configure_input="$ac_file.  "
+  fi
+  configure_input=$configure_input"Generated from `echo $ac_file_in |
+				     sed 's,.*/,,'` by configure."
+
+  # First look for the input files in the build tree, otherwise in the
+  # src tree.
+  ac_file_inputs=`IFS=:
+    for f in $ac_file_in; do
+      case $f in
+      -) echo $tmp/stdin ;;
+      [\\/$]*)
+	 # Absolute (can't be DOS-style, as IFS=:)
+	 test -f "$f" || { { echo "$as_me:$LINENO: error: cannot find input file: $f" >&5
+echo "$as_me: error: cannot find input file: $f" >&2;}
+   { (exit 1); exit 1; }; }
+	 echo "$f";;
+      *) # Relative
+	 if test -f "$f"; then
+	   # Build tree
+	   echo "$f"
+	 elif test -f "$srcdir/$f"; then
+	   # Source tree
+	   echo "$srcdir/$f"
+	 else
+	   # /dev/null tree
+	   { { echo "$as_me:$LINENO: error: cannot find input file: $f" >&5
+echo "$as_me: error: cannot find input file: $f" >&2;}
+   { (exit 1); exit 1; }; }
+	 fi;;
+      esac
+    done` || { (exit 1); exit 1; }
+
+  if test x"$ac_file" != x-; then
+    { echo "$as_me:$LINENO: creating $ac_file" >&5
+echo "$as_me: creating $ac_file" >&6;}
+    rm -f "$ac_file"
+  fi
+_ACEOF
+cat >>$CONFIG_STATUS <<_ACEOF
+  sed "$ac_vpsub
+$extrasub
+_ACEOF
+cat >>$CONFIG_STATUS <<\_ACEOF
+:t
+/@[a-zA-Z_][a-zA-Z_0-9]*@/!b
+s,@configure_input@,$configure_input,;t t
+s,@srcdir@,$ac_srcdir,;t t
+s,@abs_srcdir@,$ac_abs_srcdir,;t t
+s,@top_srcdir@,$ac_top_srcdir,;t t
+s,@abs_top_srcdir@,$ac_abs_top_srcdir,;t t
+s,@builddir@,$ac_builddir,;t t
+s,@abs_builddir@,$ac_abs_builddir,;t t
+s,@top_builddir@,$ac_top_builddir,;t t
+s,@abs_top_builddir@,$ac_abs_top_builddir,;t t
+" $ac_file_inputs | (eval "$ac_sed_cmds") >$tmp/out
+  rm -f $tmp/stdin
+  if test x"$ac_file" != x-; then
+    mv $tmp/out $ac_file
+  else
+    cat $tmp/out
+    rm -f $tmp/out
+  fi
+
+done
+_ACEOF
+
+cat >>$CONFIG_STATUS <<\_ACEOF
+
+{ (exit 0); exit 0; }
+_ACEOF
+chmod +x $CONFIG_STATUS
+ac_clean_files=$ac_clean_files_save
+
+
+# configure is writing to config.log, and then calls config.status.
+# config.status does its own redirection, appending to config.log.
+# Unfortunately, on DOS this fails, as config.log is still kept open
+# by configure, so config.status won't be able to write to it; its
+# output is simply discarded.  So we exec the FD to /dev/null,
+# effectively closing config.log, so it can be properly (re)opened and
+# appended to by config.status.  When coming back to configure, we
+# need to make the FD available again.
+if test "$no_create" != yes; then
+  ac_cs_success=:
+  ac_config_status_args=
+  test "$silent" = yes &&
+    ac_config_status_args="$ac_config_status_args --quiet"
+  exec 5>/dev/null
+  $SHELL $CONFIG_STATUS $ac_config_status_args || ac_cs_success=false
+  exec 5>>config.log
+  # Use ||, not &&, to avoid exiting from the if with $? = 1, which
+  # would make configure fail if this is the last instruction.
+  $ac_cs_success || { (exit 1); exit 1; }
+fi
+
diff --git a/scaf/configure.ac b/scaf/configure.ac
new file mode 100644
index 0000000..4b15a18
--- /dev/null
+++ b/scaf/configure.ac
@@ -0,0 +1,53 @@
+AC_INIT(pdp/pdp_ca_system.c)
+AC_PROG_CC
+AC_HEADER_STDC
+
+dnl default install prefix is /usr/local
+if test $prefix == "NONE";
+then
+	prefix=/usr/local
+fi
+
+AC_PATH_PROG(PDP_CONFIG,pdp-config,"no", $PATH)
+
+AC_CHECK_LIB(m,sin)
+AC_CHECK_LIB(dl,dlopen,, echo libdl not found. sorry... || exit 1)
+
+
+TOPSRC=`pwd`
+PARENT=`dirname $TOPSRC`
+
+dnl if pdp-config is found use it to get the cflags
+if ! test $PDP_CONFIG == "no"
+then
+	PDP_CPPFLAGS=`$PDP_CONFIG --cflags`
+
+dnl if not, check in the parent dir (in case we are distributed with the pdp package)
+elif test -f $PARENT/include/pdp.h
+then
+	PDP_CPPFLAGS="-I$PARENT/include"
+fi
+
+CPPFLAGS="$CPPFLAGS $PDP_CPPFLAGS"
+AC_CHECK_HEADER(m_pd.h,,PD_OK=no)
+AC_CHECK_HEADER(pdp.h,,PDP_OK=no)
+
+if test PD_OK == "no";
+then
+	echo "WARNING: m_pd.h not found. Is PD installed?
+	echo "WARNING: You can ignore this warning if you have set the PD_CFLAGS manually in Makefile.config.in
+fi
+
+if test PDP_OK == "no";
+then
+	echo "WARNING: pdp.h not found. Is PDP installed?
+	echo "WARNING: You can ignore this warning if you have set the PDP_CFLAGS manually in Makefile.config.in
+fi
+
+CPPFLAGS="$CPPFLAGS $PDFLAGS $PDPFLAGS -I$TOPSRC/include"
+
+DEFAULT_RULES_LIB=$prefix/lib/scaf/default.scafo;
+AC_SUBST(DEFAULT_RULES_LIB)
+
+AC_CONFIG_FILES(Makefile.config)
+AC_OUTPUT
diff --git a/scaf/doc/pdp_ca.pd b/scaf/doc/pdp_ca.pd
new file mode 100644
index 0000000..64e7e27
--- /dev/null
+++ b/scaf/doc/pdp_ca.pd
@@ -0,0 +1,78 @@
+#N canvas 62 0 753 664 10;
+#X obj 46 613 pdp_ca;
+#X obj 45 254 metro 40;
+#X msg 45 206 bang;
+#X msg 84 206 stop;
+#X msg 184 340 random;
+#X msg 181 137 rule gameoflife;
+#X floatatom 185 586 5 0 0 0 - - -;
+#X obj 185 558 tgl 15 0 empty empty empty 0 -6 0 8 -262144 -1 -1 0
+1;
+#X obj 46 638 pdp_ca2image;
+#X msg 181 215 rules;
+#X msg 185 434 close;
+#X floatatom 96 228 5 0 0 0 - - -;
+#X obj 46 662 pdp_xv;
+#X floatatom 183 285 5 0 0 0 - - -;
+#X msg 183 314 vshift \$1;
+#X msg 185 486 2D;
+#X msg 185 535 fullscreen1D \$1;
+#X obj 185 513 tgl 15 0 empty empty empty 0 -6 0 8 -262144 -1 -1 0
+1;
+#X text 197 606 1st inlet: active input (bang or ca);
+#X text 197 621 2nd inlet: passive input (ca);
+#X text 196 638 3rd inlet: nb of iterations;
+#X text 307 137 set a rule by name;
+#X text 308 206 print rules in library;
+#X msg 181 187 ruleindex \$1;
+#X text 307 183 set a rule by index;
+#X floatatom 181 165 5 0 0 0 - - -;
+#X text 313 534 off: compute one line at a time;
+#X text 313 548 on: update entire image (all lines);
+#X text 313 520 specify how to compute a 1D ca;
+#X text 313 464 interpret rules as a 1D ca with (space+time);
+#X text 313 493 interpret rules as a 2D ca with (space);
+#X msg 185 465 1D;
+#X text 314 436 close current library;
+#X obj 179 43 openpanel;
+#X msg 179 66 open \$1;
+#X msg 184 370 dim 64 64;
+#X text 314 371 set ca dimensions;
+#X obj 179 24 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1
+-1;
+#X text 306 22 open a source rule file or compiled rule library;
+#X text 306 38 (when it's a source file \, make sure the "scafc" compiler
+is in the system path);
+#X msg 340 70 opensrc \$1;
+#X msg 446 70 openlib \$1;
+#X text 306 72 use;
+#X text 419 71 and;
+#X text 306 89 to explicitly open source or library;
+#X text 314 342 init ca with random noise;
+#X text 314 312 vertical shift compensation;
+#X text 181 257 bang computes next iteration(s);
+#X msg 185 397 dim 512 512;
+#X connect 0 0 8 0;
+#X connect 1 0 0 0;
+#X connect 2 0 1 0;
+#X connect 3 0 1 0;
+#X connect 4 0 0 0;
+#X connect 5 0 0 0;
+#X connect 6 0 0 2;
+#X connect 7 0 6 0;
+#X connect 8 0 12 0;
+#X connect 9 0 0 0;
+#X connect 10 0 0 0;
+#X connect 11 0 1 1;
+#X connect 13 0 14 0;
+#X connect 14 0 0 0;
+#X connect 15 0 0 0;
+#X connect 16 0 0 0;
+#X connect 17 0 16 0;
+#X connect 23 0 0 0;
+#X connect 25 0 23 0;
+#X connect 33 0 34 0;
+#X connect 34 0 0 0;
+#X connect 35 0 0 0;
+#X connect 37 0 33 0;
+#X connect 48 0 0 0;
diff --git a/scaf/include/Makefile b/scaf/include/Makefile
new file mode 100644
index 0000000..1aba02c
--- /dev/null
+++ b/scaf/include/Makefile
@@ -0,0 +1,6 @@
+current:
+
+
+clean:
+	rm -f *~
+
diff --git a/scaf/include/pdp_ca.h b/scaf/include/pdp_ca.h
new file mode 100644
index 0000000..3d77133
--- /dev/null
+++ b/scaf/include/pdp_ca.h
@@ -0,0 +1,74 @@
+/*
+ *   Cellular Automata Extension Module for pdp - Main header file
+ *   Copyright (c) by Tom Schouten <pdp@zzz.kotnet.org>
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 2 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, write to the Free Software
+ *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#ifndef PDP_CA_H
+#define PDP_CA_H
+
+#include "pdp.h"
+
+
+
+/* 2D CA DATA PACKET */
+typedef struct
+{
+    unsigned int encoding;  /* CA data format */
+    unsigned int width;     /* CA width (in 1 bit cells) */
+    unsigned int height;    /* CA height (in 1 bit cells) */
+    unsigned int offset;    /* bit offset of upper left corner */
+    unsigned int currow;    /* current row to compute for 1D CA */
+    
+} t_ca;
+
+/* CA encodings */
+#define PDP_CA_STANDARD     1  /* rectangular CA */
+
+/* pdp data packet types */
+#define PDP_CA              2  /* 1bit toroidial shifted scanline encoded cellular automaton */
+
+
+/* all symbols are C-style */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+/* constructor */
+int pdp_packet_new_ca(int encoding, int width, int height);
+
+/* some utility methods for CA */
+int pdp_packet_ca_isvalid(int packet);
+int pdp_type_ca2grey(int packet);
+int pdp_type_grey2ca(int packet, short int threshold);
+
+/* returns a pointer to the ca subheader given the pdp header */
+t_ca *pdp_type_ca_info(t_pdp *x);
+
+/* mmx feeder routine */
+unsigned long long scaf_feeder(void *tos, void *reg, void (*ca_rule)(void), void *env);
+
+
+
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif //PDP_CA_H
diff --git a/scaf/pdp/Makefile b/scaf/pdp/Makefile
new file mode 100644
index 0000000..5ec8a0d
--- /dev/null
+++ b/scaf/pdp/Makefile
@@ -0,0 +1,13 @@
+current: all_modules
+
+include ../Makefile.config
+
+OBJECTS = pdp_ca.o pdp_ca_system.o scaf_feeder.o
+
+
+all_modules: $(OBJECTS) 
+
+clean:
+	rm -f *~
+	rm -f *.o
+
diff --git a/scaf/pdp/pdp_ca.c b/scaf/pdp/pdp_ca.c
new file mode 100644
index 0000000..3f80a75
--- /dev/null
+++ b/scaf/pdp/pdp_ca.c
@@ -0,0 +1,919 @@
+/*
+ *   Pure Data Packet module for cellular automata
+ *   Copyright (c) by Tom Schouten <pdp@zzz.kotnet.org>
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 2 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, write to the Free Software
+ *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+
+
+#include "pdp_ca.h"
+#include "pdp_internals.h"
+#include <dlfcn.h>
+#include <stdio.h>
+
+t_class *pdp_ca_class;        // a cellular automaton processor: single input - single output
+//t_class *pdp_ca2_class;     //                                 double input - single output
+t_class *pdp_ca2image_class;   // converter from ca -> grey/yv12
+t_class *pdp_image2ca_class;   // converter from grey/yv12 -> ca
+
+
+// *********************** CA CLASS STUFF *********************
+
+
+// this is defined in the makefile
+// #define PDP_CA_RULES_LIB "/path/default.scafo"
+
+#define PDP_CA_STACKSIZE 256
+#define PDP_CA_MODE_1D 1
+#define PDP_CA_MODE_2D 2
+
+typedef struct pdp_ca_data_struct
+{
+    unsigned int env[2*4];
+    unsigned int reg[2*4];
+    unsigned int stack[2*PDP_CA_STACKSIZE];
+    short int random_seed[4];
+} t_pdp_ca_data;
+
+typedef struct pdp_ca_struct
+{
+    t_object x_obj;
+    t_float x_f;
+
+    t_outlet *x_outlet0;
+    int x_queue_id;
+
+    /* double buffering data packets */
+    int x_packet0;
+    int x_packet1;
+
+    /* some data on the ca_routine */
+    void (*x_ca_routine)(void);
+    void *x_ca_libhandle;
+    char *x_ca_rulenames;
+    int x_ca_nbrules;
+    char ** x_ca_rulename;
+    t_symbol *x_lastrule;
+    
+    /* nb of iterations */
+    int x_iterations;
+
+    /* shift ca on output */
+    int x_horshift;
+    int x_vershift;
+
+    /* operation mode */
+    int x_mode;
+    int x_fullscreen1d;
+
+    /* aligned vector data */
+    t_pdp_ca_data *x_data;
+
+    /* output packet type */
+    t_symbol *x_packet_type;
+
+} t_pdp_ca;
+
+
+/* 1D: process from packet0 -> packet0 */
+static void pdp_ca_process_ca_1D(t_pdp_ca *x)
+{
+    t_pdp *header = pdp_packet_header(x->x_packet0);
+    unsigned int  *data   = (unsigned int *)pdp_packet_data  (x->x_packet0);
+
+    int width  = pdp_type_ca_info(header)->width;
+    int height = pdp_type_ca_info(header)->height;
+    int i;
+
+    unsigned int saved;
+
+    /* load TOS in middle of buffer to limit the effect of stack errors */
+    unsigned int *tos = &x->x_data->stack[2*(PDP_CA_STACKSIZE/2)];
+    unsigned int *env = &x->x_data->env[0];
+    unsigned int *reg = &x->x_data->reg[0];
+    void *ca_routine = x->x_ca_routine;
+    unsigned int rtos;
+
+    /* double word width: number of unsigned ints per row  */
+    int dwwidth = width >> 5;
+    int currow = pdp_type_ca_info(header)->currow;
+
+    unsigned long long result = 0;
+
+    unsigned short temp;
+    unsigned short *usdata;
+
+    /* set destination row to 4th row from top (ca time horizon is 3 deep) */
+    int dwrow0 = (((currow + height - 3) % height) * width) >> 5;
+    int dwrow1 = (((currow + height - 2) % height) * width) >> 5;
+    int dwrow2 = (((currow + height - 1) % height) * width) >> 5;
+    int dwrow3 = (currow * width) >> 5;
+
+    /* exit if there isn't a valid routine */
+    if(!ca_routine) return;
+
+
+    /* compute new row */
+    for(i=0; i < (dwwidth-1) ; i+=1){
+	env[0] = data[dwrow0 + i];
+	env[1] = data[dwrow0 + i + 1];
+	env[2] = data[dwrow1 + i];
+	env[3] = data[dwrow1 + i + 1];
+	env[4] = data[dwrow2 + i];
+	env[5] = data[dwrow2 + i + 1];
+	result = scaf_feeder(tos, reg, ca_routine, env);
+	data[dwrow3 + i] = result & 0xffffffff;
+    }
+    // i == dwwidth-1
+    
+    /* compute last column in row */
+    env[0] = data[dwrow0 + i];
+    env[1] = data[dwrow0];
+    env[2] = data[dwrow1 + i];
+    env[3] = data[dwrow1];
+    env[4] = data[dwrow2 + i];
+    env[5] = data[dwrow2];
+    result = scaf_feeder(tos, reg, ca_routine, env);
+    data[dwrow3 + i] = result & 0xffffffff;
+
+
+    /* undo the shift */
+    usdata = (unsigned short *)(&data[dwrow3]);
+    temp = usdata[(dwwidth*2)-1];
+    for (i = (dwwidth*2 - 1); i > 0; i--){
+	usdata[i] = usdata[i-1];
+    }
+    usdata[0] = temp;
+
+    /* check data stack pointer */
+    rtos = (unsigned int)tos;
+
+    if (env[0] != rtos){
+	if (env[0] > rtos) post("pdp_ca: ERROR: stack underflow detected in ca routine");
+	if (env[0] < rtos) post("pdp_ca: ERROR: ca routine returned more than one item");
+	x->x_ca_routine = 0;
+	post("pdp_ca: rule disabled");
+	
+    }
+
+    /* save current row */
+    pdp_type_ca_info(header)->currow = (currow + 1) % height;
+
+}
+
+
+/* 2D: process from packet0 -> packet1 */
+static void pdp_ca_process_ca_2D(t_pdp_ca *x)
+{
+    t_pdp *header0 = pdp_packet_header(x->x_packet0);
+    t_pdp *header1 = pdp_packet_header(x->x_packet1);
+    unsigned int  *data0   = (unsigned int *)pdp_packet_data  (x->x_packet0);
+    unsigned int  *data1   = (unsigned int *)pdp_packet_data  (x->x_packet1);
+
+
+    int width  = pdp_type_ca_info(header0)->width;
+    int height = pdp_type_ca_info(header0)->height;
+    int i,j;
+
+    /* load TOS in middle of buffer to limit the effect of stack errors */
+    unsigned int *tos = &x->x_data->stack[2*(PDP_CA_STACKSIZE/2)];
+    unsigned int *env = &x->x_data->env[0];
+    unsigned int *reg = &x->x_data->reg[0];
+    void *ca_routine = x->x_ca_routine;
+    unsigned int rtos;
+
+    int offset = pdp_type_ca_info(header0)->offset;
+    int xoffset = offset % width;
+    int yoffset = offset / width;
+
+    /* double word width: number of unsigned ints per row  */
+    int dwwidth = width >> 5;
+
+    unsigned long long result = 0;
+
+    /* exit if there isn't a valid routine */
+    if(!ca_routine) return;
+    if(!header0) return;
+    if(!header1) return;
+
+    //post("pdp_ca: PRE offset: %d, xoffset: %d, yoffset: %d", offset, xoffset, yoffset);
+
+    /* calculate new offset: lines shift up, rows shift left by 16 cells */
+    xoffset = (xoffset + width - 16) % width;
+    yoffset = (yoffset + height - 1) % height;
+
+    offset =  yoffset * width + xoffset;
+
+    //post("pdp_ca: PST offset: %d, xoffset: %d, yoffset: %d", offset, xoffset, yoffset);
+
+
+    pdp_type_ca_info(header1)->offset = offset;
+
+
+    for(j=0; j<dwwidth*(height - 2); j+=(dwwidth<<1)){
+	for(i=0; i < (dwwidth-1) ; i+=1){
+	    env[0] = data0[i + j];
+	    env[1] = data0[i + j + 1];
+	    env[2] = data0[i + j + dwwidth];
+	    env[3] = data0[i + j + dwwidth + 1];
+	    env[4] = data0[i + j + (dwwidth<<1)];
+	    env[5] = data0[i + j + (dwwidth<<1) + 1];
+	    env[6] = data0[i + j + (dwwidth<<1) + dwwidth];
+	    env[7] = data0[i + j + (dwwidth<<1) + dwwidth + 1];
+	    result = scaf_feeder(tos, reg, ca_routine, env);
+	    data1[i + j] = result & 0xffffffff;
+	    data1[i + j + dwwidth] = result >> 32;
+	}
+	// i == dwwidth-1
+
+	env[0] = data0[i + j];
+	env[1] = data0[j];
+	env[2] = data0[i + j + dwwidth];
+	env[3] = data0[j + dwwidth];
+	env[4] = data0[i + j + (dwwidth<<1)];
+	env[5] = data0[j + (dwwidth<<1)];
+	env[6] = data0[i + j + (dwwidth<<1) + dwwidth];
+	env[7] = data0[j + (dwwidth<<1) + dwwidth];
+	result = scaf_feeder(tos, reg, ca_routine, env);
+	data1[i + j] = result & 0xffffffff;
+	data1[i + j + dwwidth] = result >> 32;
+    }
+
+    // j == dwwidth*(height - 2)
+    for(i=0; i < (dwwidth-1) ; i+=1){
+	env[0] = data0[i + j];
+	env[1] = data0[i + j + 1];
+	env[2] = data0[i + j + dwwidth];
+	env[3] = data0[i + j + dwwidth + 1];
+	env[4] = data0[i];
+	env[5] = data0[i + 1];
+	env[6] = data0[i + dwwidth];
+	env[7] = data0[i + dwwidth + 1];
+	result = scaf_feeder(tos, reg, ca_routine, env);
+	data1[i + j] = result & 0xffffffff;
+	data1[i + j + dwwidth] = result >> 32;
+    }
+    // j == dwwidth*(height - 2)
+    // i == dwwidth-1
+    env[0] = data0[i + j];
+    env[1] = data0[j];
+    env[2] = data0[i + j + dwwidth];
+    env[3] = data0[j + dwwidth];
+    env[4] = data0[i];
+    env[5] = data0[0];
+    env[6] = data0[i + dwwidth];
+    env[7] = data0[dwwidth];
+    result = scaf_feeder(tos, reg, ca_routine, env);
+    data1[i + j] = result & 0xffffffff;
+    data1[i + j + dwwidth] = result >> 32;
+
+
+
+    /* check data stack pointer */
+    rtos = (unsigned int)tos;
+
+    if (env[0] != rtos){
+	if (env[0] > rtos) post("pdp_ca: ERROR: stack underflow detected in ca routine");
+	if (env[0] < rtos) post("pdp_ca: ERROR: ca routine returned more than one item");
+	x->x_ca_routine = 0;
+	post("pdp_ca: rule disabled");
+	
+    }
+
+    return;
+}
+
+
+static void pdp_ca_swappackets(t_pdp_ca *x)
+{
+   /* swap packets */
+   int packet = x->x_packet1;
+   x->x_packet1 = x->x_packet0;
+   x->x_packet0 = packet;
+}
+
+
+
+
+
+/* tick advance CA one timestep */
+static void pdp_ca_bang_thread(t_pdp_ca *x)
+{
+   int encoding;
+   int packet;
+   int i;
+   int iterations =  x->x_iterations;
+  
+   /* invariant: the two packets are allways valid and compatible 
+      so a bang is allways possible. this means that in the pdp an 
+      invalid packet needs to be converted to a valid one */
+
+   if (-1 == x->x_packet0) pdp_post("warning: packet 0 invalid");
+   if (-1 == x->x_packet1) pdp_post("warning: packet 1 invalid");
+
+   if (PDP_CA_MODE_2D == x->x_mode){
+       for(i=0; i < iterations; i++){
+      
+	   /* process form packet0 -> packet1 */
+	   pdp_ca_process_ca_2D(x);
+
+	   /* swap */
+	   pdp_ca_swappackets(x);
+       }
+   }
+   else if (PDP_CA_MODE_1D == x->x_mode){
+       if (x->x_fullscreen1d){
+	   t_pdp *header0 = pdp_packet_header(x->x_packet0);
+	   pdp_type_ca_info(header0)->currow = 0;
+	   pdp_type_ca_info(header0)->offset = 0;
+	   iterations = pdp_type_ca_info(header0)->height;
+       }
+       for(i=0; i < iterations; i++){
+ 
+	   pdp_ca_process_ca_1D(x);
+       }
+   }
+
+}
+
+static void pdp_ca_sendpacket(t_pdp_ca *x)
+{
+
+    /* adjust offset before sending */
+    t_pdp *header0 = pdp_packet_header(x->x_packet0);
+    int offset, width, height, xoffset, yoffset, horshift, vershift;
+
+    if (!header0) return;
+
+    offset = pdp_type_ca_info(header0)->offset;
+    width  = pdp_type_ca_info(header0)->width;
+    height = pdp_type_ca_info(header0)->height;
+    xoffset = offset % width;
+    yoffset = offset / width;
+    horshift = x->x_horshift;
+    vershift = x->x_vershift;
+
+    horshift %= width;
+    if (horshift < 0) horshift += width;
+    vershift %= height;
+    if (vershift < 0) vershift += height;
+
+    xoffset = (xoffset + horshift) % width;
+    yoffset = (yoffset + vershift) % height;
+    offset =  yoffset * width + xoffset;
+
+    pdp_type_ca_info(header0)->offset = offset;
+
+
+
+    /* output the packet */
+    outlet_pdp(x->x_outlet0, x->x_packet0);
+}
+
+static void pdp_ca_bang(t_pdp_ca *x)
+{
+    /* we don't use input packets for testing dropping here 
+       but check the queue_id to see if processing is
+       still going on */
+    
+    if (-1 == x->x_queue_id){
+	pdp_queue_add(x, pdp_ca_bang_thread, pdp_ca_sendpacket, &x->x_queue_id);
+    }
+
+    else{
+	pdp_control_notify_drop(-1);
+    }
+}
+
+
+/* this method stores the packet into x->x_packet0 (the packet
+   to be processed) if it is valid. x->x_packet1 is not compatible
+   it is regenerated so that it is 
+   
+   in short, when this routine returns both packets are valid
+   and compatible.
+*/
+
+
+static void pdp_ca_copy_rw_if_valid(t_pdp_ca *x, int packet)
+{
+    t_pdp *header  = pdp_packet_header(packet);
+    t_pdp *header1 = pdp_packet_header(x->x_packet1);
+
+
+    int grabpacket;
+    int convertedpacket;
+
+    /* check if header is valid */
+    if (!header) return;
+
+    if (PDP_CA != header->type) return;
+    if (PDP_CA_STANDARD != pdp_type_ca_info(header)->encoding) return;
+
+
+    /* packet is a ca, register it */
+    pdp_packet_mark_unused(x->x_packet0);
+    x->x_packet0 = pdp_packet_copy_rw(packet);
+
+
+    /* make sure we have the right header */
+    header = pdp_packet_header(x->x_packet0);
+
+
+    /* make sure that the other packet is compatible */
+    if ((pdp_type_ca_info(header1)->width != pdp_type_ca_info(header)->width) ||
+	 (pdp_type_ca_info(header1)->height != pdp_type_ca_info(header)->height)) {
+
+	/* if not, throw away and clone the new one */
+	pdp_packet_mark_unused(x->x_packet1);
+	x->x_packet1 = pdp_packet_clone_rw(x->x_packet0);
+    }
+
+    if (-1 == x->x_packet0) pdp_post("warning: packet 0 invalid");
+    if (-1 == x->x_packet1) pdp_post("warning: packet 1 invalid");
+
+
+};
+
+/* hot packet inlet */
+static void pdp_ca_input_0(t_pdp_ca *x, t_symbol *s, t_floatarg f)
+{
+
+    if (s == gensym("register_rw")){
+	pdp_ca_copy_rw_if_valid(x, (int)f);
+    }
+    else if (s == gensym("process")){
+	pdp_ca_bang(x);
+    }
+
+
+}
+
+/* cold packet inlet */
+static void pdp_ca_input_1(t_pdp_ca *x, t_symbol *s, t_floatarg f)
+{
+
+    if (s == gensym("register_rw"))
+    {
+	pdp_ca_copy_rw_if_valid(x, (int)f);
+    }
+
+}
+
+
+static void pdp_ca_rule_string(t_pdp_ca *x, char *c)
+{
+    char tmp[256];
+    void (*ca_routine)(void);
+
+
+    /* check if we can find string */
+    sprintf(tmp, "rule_%s", c);
+    if (!(ca_routine = dlsym(x->x_ca_libhandle, tmp))){
+	post("pdp_ca: can't fine ca rule %s (symbol: %s)", c, tmp);
+	return;
+    }
+    /* ok, so store routine address */
+    else{
+	x->x_ca_routine = ca_routine;
+	x->x_lastrule = gensym(c);
+    }
+}
+
+
+static void pdp_ca_rule(t_pdp_ca *x, t_symbol *s)
+{
+    /* make sure lib is loaded */
+    if (!x->x_ca_libhandle) return;
+    
+    /* set rule by name */
+    pdp_ca_rule_string(x, s->s_name);
+}
+
+static void pdp_ca_rule_index(t_pdp_ca *x, t_float f)
+{
+    int i = (int)f;
+
+    /* make sure lib is loaded */
+    if (!x->x_ca_libhandle) return;
+
+    /* check index */
+    if (i<0) return;
+    if (i>=x->x_ca_nbrules) return;
+
+    /* set rule by index */
+    pdp_ca_rule_string(x, x->x_ca_rulename[i]);
+
+}
+
+
+static void pdp_ca_close(t_pdp_ca *x)
+{
+    if (x->x_ca_libhandle){
+	dlclose(x->x_ca_libhandle);
+	x->x_ca_libhandle = 0;
+	x->x_ca_routine = 0;
+	if (x->x_ca_rulename){
+	    free (x->x_ca_rulename);
+	    x->x_ca_rulename = 0;
+	}
+    
+
+    }
+}
+
+
+static void pdp_ca_printrules(t_pdp_ca *x)
+{
+    int i;
+
+    if (!(x->x_ca_libhandle)) return;
+    post("pdp_ca: found %d rules: ", x->x_ca_nbrules);
+    for(i=0;i<x->x_ca_nbrules; i++) post("%3d: %s ", i, x->x_ca_rulename[i]);
+
+
+}
+
+/* open code library */
+static void pdp_ca_openlib(t_pdp_ca *x, t_symbol *s)
+{
+
+    char *c;
+    int words;
+
+    /* close current lib, if one */
+    pdp_ca_close(x);
+
+    /* try to open new lib */
+    if (!(x->x_ca_libhandle = dlopen(s->s_name, RTLD_NOW))){
+	post("pdp_ca: can't open ca library %s\n%s", s->s_name, dlerror());
+	x->x_ca_libhandle = 0;
+	return;
+    }
+
+    /* scan for valid rules */
+    if (!(x->x_ca_rulenames = (char *)dlsym(x->x_ca_libhandle, "rulenames"))){
+	post("pdp_ca: ERROR: %s does not contain a name table. closing.", s->s_name);
+        pdp_ca_close(x);
+	return;
+    }
+
+    /* count rules */
+    words = 0;
+    for(c = (char *)x->x_ca_rulenames; *c;){
+	words++;
+	while(*c++);
+    }
+    x->x_ca_nbrules = words;
+    x->x_ca_rulename = (char **)malloc(sizeof(char *) * words);
+
+    /* build name array */
+    words = 0;
+    for(c = (char *)x->x_ca_rulenames; *c;){
+	x->x_ca_rulename[words] = c;
+	words++;
+	while(*c++);
+    }
+
+    /* ok, we're done */
+    post("pdp_ca: opened rule library %s", s->s_name ,x->x_ca_nbrules);
+
+    /* print rule names */
+    //pdp_ca_printrules(x);
+
+    /* set last selected rule */
+    pdp_ca_rule(x, x->x_lastrule);
+  
+    
+}
+
+/* compile source file and open resulting code library */
+static void pdp_ca_opensrc(t_pdp_ca *x, t_symbol *s)
+{
+    #define TMPSIZE 1024
+    char commandline[TMPSIZE];
+    char library[TMPSIZE];
+    int status;
+
+    /*  setup compiler args */
+    snprintf(library, TMPSIZE, "%so", s->s_name);
+    snprintf(commandline, TMPSIZE, "scafc %s %s", s->s_name, library);
+
+
+
+    /* call compiler */
+    if (system(commandline)) 
+    {
+	post ("pdp_ca: error compiling %s", s->s_name);
+    }
+    else 
+    {
+	post("pdp_ca: compiled %s", s->s_name);
+	pdp_ca_openlib(x, gensym(library));
+    }
+}
+
+/* open a source file or a library, depending on extension */
+static void pdp_ca_open(t_pdp_ca *x, t_symbol *s)
+{
+    char *name = s->s_name;
+    char *end = name;
+    while(*end) end++;
+    if (end == name){
+	post("pdp_ca: invalid file name");
+	return;
+    }
+    /* if the name ends with 'o' assume it is a library */
+    if (end[-1] == 'o'){
+	pdp_ca_openlib(x, s);
+    }
+    /* otherwize, assume it is a source file */
+    else{
+	pdp_ca_opensrc(x, s);
+    }
+
+}
+
+/* init the current packet with random noise */
+static void pdp_ca_rand(t_pdp_ca *x){
+
+    t_pdp *header = pdp_packet_header(x->x_packet0);
+    short int *data = (short int *) pdp_packet_data(x->x_packet0);
+    int i;
+
+    int nbshortints = (pdp_type_ca_info(header)->width >> 4) * pdp_type_ca_info(header)->height;
+
+    for(i=0; i<nbshortints; i++) 
+	data[i] = random();
+    
+}
+
+
+static void pdp_ca_newca(t_pdp_ca *x, t_float width, t_float height)
+{
+    /* delete old packets */
+    pdp_packet_mark_unused(x->x_packet0);
+    pdp_packet_mark_unused(x->x_packet1);
+
+
+    /* create new packets */
+    x->x_packet0 = pdp_packet_new_ca(PDP_CA, width, height);
+    x->x_packet1 = pdp_packet_clone_rw(x->x_packet0);
+
+}
+
+
+static void pdp_ca_iterations(t_pdp_ca *x, t_float f)
+{
+    int i = (int)f;
+
+    if (i < 0) i = 0;
+
+    x->x_iterations = i;
+}
+
+static void pdp_ca_horshift16(t_pdp_ca *x, t_float f)
+{
+    x->x_horshift = 16 * (int)f;
+}
+
+static void pdp_ca_vershift(t_pdp_ca *x, t_float f)
+{
+    x->x_vershift = (int)f;
+}
+
+static void pdp_ca_set1d(t_pdp_ca *x)
+{
+    x->x_mode = PDP_CA_MODE_1D;
+}
+
+static void pdp_ca_set2d(t_pdp_ca *x)
+{
+    x->x_mode = PDP_CA_MODE_2D;
+}
+
+static void pdp_ca_fullscreen1d(t_pdp_ca *x, t_floatarg f)
+{
+    if (f == 0.0f) x->x_fullscreen1d = 0;
+    if (f == 1.0f) x->x_fullscreen1d = 1;
+}
+
+static void pdp_ca_free(t_pdp_ca *x)
+{
+    pdp_packet_mark_unused(x->x_packet0);
+    pdp_packet_mark_unused(x->x_packet1);
+    pdp_ca_close(x);
+    free(x->x_data);
+}
+
+
+
+void *pdp_ca_new(void)
+{
+    t_pdp_ca *x = (t_pdp_ca *)pd_new(pdp_ca_class);
+
+    inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("pdp"), gensym("pdp1"));
+    inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("float"), gensym("iterations"));
+
+    x->x_outlet0 = outlet_new(&x->x_obj, &s_anything); 
+
+    x->x_packet0 = -1;
+    x->x_packet1 = -1;
+    x->x_queue_id = -1;
+    
+    x->x_data = (t_pdp_ca_data *)malloc(sizeof(t_pdp_ca_data));
+    x->x_ca_routine = 0;
+    x->x_ca_libhandle = 0;
+    x->x_ca_rulename = 0;
+
+    x->x_horshift = 0;
+    x->x_vershift = 0;
+
+    pdp_ca_newca(x, 64, 64);
+    pdp_ca_iterations(x, 1);
+    pdp_ca_set2d(x);
+    pdp_ca_fullscreen1d(x, 0);
+
+    x->x_packet_type = gensym("grey");
+    x->x_lastrule = gensym("gameoflife");
+    pdp_ca_openlib(x, gensym(PDP_CA_RULES_LIB));
+
+    return (void *)x;
+}
+
+
+// *********************** CA CONVERTER CLASSES STUFF *********************
+// TODO: move this to a separate file later together with other converters (part of system?)
+
+#define PDP_CA2IMAGE 1
+#define PDP_IMAGE2CA 2
+
+typedef struct pdp_ca_conv_struct
+{
+    t_object x_obj;
+    t_float x_f;
+
+
+    int x_threshold;
+
+    int x_packet;
+
+    t_outlet *x_outlet0;
+
+    /* solve identity crisis */
+    int x_whoami;
+
+    /* output packet type */
+    /* only greyscale for now */
+    t_symbol *x_packet_type;
+
+} t_pdp_ca_conv;
+
+/* hot packet inlet */
+static void pdp_ca_conv_input_0(t_pdp_ca_conv *x, t_symbol *s, t_floatarg f)
+{
+    int packet = -1;
+
+    if (s == gensym("register_ro")){
+	pdp_packet_mark_unused(x->x_packet);
+	x->x_packet = pdp_packet_copy_ro((int)f);
+	return;
+    }
+    else if (s == gensym("process")){
+	switch(x->x_whoami){
+	case PDP_CA2IMAGE:
+	    packet = pdp_type_ca2grey(x->x_packet);
+	    break;
+	case PDP_IMAGE2CA:
+	    packet = pdp_type_grey2ca(x->x_packet, x->x_threshold);
+	    break;
+	}
+	
+	/* throw away the original packet */
+	pdp_packet_mark_unused(x->x_packet);
+	x->x_packet = -1;
+
+
+	/* pass the fresh packet */
+	pdp_packet_pass_if_valid(x->x_outlet0, &packet);
+
+	/* unregister the freshly created packet */
+	//pdp_packet_mark_unused(packet);
+
+	/* output if valid */
+	//if (-1 != packet) outlet_pdp(x->x_outlet0, packet);
+    }
+
+
+}
+
+void pdp_ca_conv_free(t_pdp_ca_conv *x) 
+{
+    pdp_packet_mark_unused(x->x_packet);
+}
+
+
+void pdp_image2ca_threshold(t_pdp_ca_conv *x, t_float f)
+{
+    f *= 0x8000;
+
+    if (f < -0x7fff) f = -0x7fff;
+    if (f > 0x7fff) f = 0x7fff;
+
+    x->x_threshold = (short int)f;
+}
+
+void *pdp_ca2image_new(void)
+{
+    t_pdp_ca_conv *x = (t_pdp_ca_conv *)pd_new(pdp_ca2image_class);
+    x->x_outlet0 = outlet_new(&x->x_obj, &s_anything); 
+    x->x_packet_type = gensym("grey");
+    x->x_packet = -1;
+    x->x_whoami = PDP_CA2IMAGE;
+    return (void *)x;
+}
+
+void *pdp_image2ca_new(void)
+{
+    t_pdp_ca_conv *x = (t_pdp_ca_conv *)pd_new(pdp_image2ca_class);
+    inlet_new(&x->x_obj, &x->x_obj.ob_pd, gensym("float"), gensym("threshold"));
+    x->x_outlet0 = outlet_new(&x->x_obj, &s_anything); 
+    x->x_packet_type = gensym("grey");
+    x->x_packet = -1;
+    x->x_whoami = PDP_IMAGE2CA;
+    x->x_threshold = 0x4000;
+    return (void *)x;
+}
+
+
+// *********************** CLASS SETUP FUNCTIONS *********************
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+
+
+void pdp_ca2image_setup(void)
+{
+    pdp_ca2image_class = class_new(gensym("pdp_ca2image"), (t_newmethod)pdp_ca2image_new,
+    	(t_method)pdp_ca_conv_free, sizeof(t_pdp_ca), 0, A_NULL);
+    class_addmethod(pdp_ca2image_class, (t_method)pdp_ca_conv_input_0, gensym("pdp"),  A_SYMBOL, A_DEFFLOAT, A_NULL);
+}
+
+void pdp_image2ca_setup(void)
+{
+    pdp_image2ca_class = class_new(gensym("pdp_image2ca"), (t_newmethod)pdp_image2ca_new,
+    	(t_method)pdp_ca_conv_free, sizeof(t_pdp_ca), 0, A_NULL);
+    class_addmethod(pdp_image2ca_class, (t_method)pdp_ca_conv_input_0, gensym("pdp"),  A_SYMBOL, A_DEFFLOAT, A_NULL);
+    class_addmethod(pdp_image2ca_class, (t_method)pdp_image2ca_threshold, gensym("threshold"),  A_FLOAT, A_NULL);
+}
+
+void pdp_ca_setup(void)
+{
+
+
+    pdp_ca_class = class_new(gensym("pdp_ca"), (t_newmethod)pdp_ca_new,
+    	(t_method)pdp_ca_free, sizeof(t_pdp_ca), 0, A_NULL);
+
+   
+    class_addmethod(pdp_ca_class, (t_method)pdp_ca_iterations, gensym("iterations"), A_FLOAT, A_NULL);
+    class_addmethod(pdp_ca_class, (t_method)pdp_ca_bang, gensym("bang"), A_NULL);
+    class_addmethod(pdp_ca_class, (t_method)pdp_ca_printrules, gensym("rules"), A_NULL);
+    class_addmethod(pdp_ca_class, (t_method)pdp_ca_rand, gensym("random"), A_NULL);
+    class_addmethod(pdp_ca_class, (t_method)pdp_ca_newca, gensym("ca"), A_FLOAT, A_FLOAT, A_NULL);
+    class_addmethod(pdp_ca_class, (t_method)pdp_ca_newca, gensym("dim"), A_FLOAT, A_FLOAT, A_NULL);
+    class_addmethod(pdp_ca_class, (t_method)pdp_ca_horshift16, gensym("hshift16"), A_FLOAT, A_NULL);
+    class_addmethod(pdp_ca_class, (t_method)pdp_ca_vershift, gensym("vshift"), A_FLOAT, A_NULL);
+    class_addmethod(pdp_ca_class, (t_method)pdp_ca_close, gensym("close"), A_NULL);
+    class_addmethod(pdp_ca_class, (t_method)pdp_ca_openlib, gensym("openlib"),  A_SYMBOL, A_NULL);
+    class_addmethod(pdp_ca_class, (t_method)pdp_ca_opensrc, gensym("opensrc"),  A_SYMBOL, A_NULL);
+    class_addmethod(pdp_ca_class, (t_method)pdp_ca_open, gensym("open"),  A_SYMBOL, A_NULL);
+    class_addmethod(pdp_ca_class, (t_method)pdp_ca_rule, gensym("rule"),  A_SYMBOL, A_NULL);
+    class_addmethod(pdp_ca_class, (t_method)pdp_ca_rule_index, gensym("ruleindex"),  A_FLOAT, A_NULL);
+    class_addmethod(pdp_ca_class, (t_method)pdp_ca_input_0, gensym("pdp"),  A_SYMBOL, A_DEFFLOAT, A_NULL);
+    class_addmethod(pdp_ca_class, (t_method)pdp_ca_input_1, gensym("pdp1"), A_SYMBOL, A_DEFFLOAT, A_NULL);
+    class_addmethod(pdp_ca_class, (t_method)pdp_ca_set1d, gensym("1D"), A_NULL);
+    class_addmethod(pdp_ca_class, (t_method)pdp_ca_set2d, gensym("2D"), A_NULL);
+    class_addmethod(pdp_ca_class, (t_method)pdp_ca_fullscreen1d, gensym("fullscreen1D"), A_FLOAT, A_NULL);
+
+}
+
+#ifdef __cplusplus
+}
+#endif
diff --git a/scaf/pdp/pdp_ca_system.c b/scaf/pdp/pdp_ca_system.c
new file mode 100644
index 0000000..acbab34
--- /dev/null
+++ b/scaf/pdp/pdp_ca_system.c
@@ -0,0 +1,324 @@
+/*
+ *   Cellular Automata Extension Module for pdp - Main system code
+ *   Copyright (c) by Tom Schouten <pdp@zzz.kotnet.org>
+ *
+ *   This program is free software; you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation; either version 2 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, write to the Free Software
+ *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include "pdp_ca.h"
+#include "pdp_internals.h"
+
+/* all symbols are C-style */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+
+/* check if packet is a valid ca packet */
+int pdp_packet_ca_isvalid(int packet)
+{
+    t_pdp *header = pdp_packet_header(packet);
+    if (!header) return 0;
+    if (PDP_CA != header->type) return 0;
+    if (PDP_CA_STANDARD != pdp_type_ca_info(header)->encoding) return 0;
+
+    return 1;
+}
+
+
+static t_pdp_symbol *pdp_packet_ca_get_description(int packet)
+{
+    t_pdp *header = pdp_packet_header(packet);
+    char description[1024];
+    char *c = description;
+    int encoding;
+
+    if (!header) return pdp_gensym("invalid");
+    if (header->type == PDP_CA){
+	c += sprintf(c, "ca");
+	switch(pdp_type_ca_info(header)->encoding){
+	case PDP_CA_STANDARD: c += sprintf(c, "/1bit2D"); break;
+	default:
+	    c += sprintf(c, "/unknown"); goto exit;
+	}
+	c += sprintf(c, "/%dx%d", 
+		     pdp_type_ca_info(header)->width, 
+		     pdp_type_ca_info(header)->height);
+
+    exit:
+	return pdp_gensym(description);
+    } 
+    else return pdp_gensym("unknown");
+}
+
+/* create a new ca packet */
+int pdp_packet_new_ca(int encoding, int width, int height)
+{
+    int p;
+    int w = (int)width;
+    int h = (int)height;
+    int bytesize;
+    t_pdp *header;
+
+    /* ensure with = multiple of 64 */
+    w &= 0xffffffc0;
+
+    /* ensure height = multiple of 4 */
+    w &= 0xfffffffc;
+
+    w = (w<64) ? 64 : w;
+    h = (h<4) ? 4 : h;
+
+    bytesize = (w>>3) * h;
+
+
+    /* create new packets */
+    p = pdp_packet_new(PDP_CA, bytesize);
+    header = pdp_packet_header(p);
+    if (!header) {
+	pdp_post("error: can't create CA packet");
+	return -1;
+    }
+
+    pdp_type_ca_info(header)->encoding = PDP_CA_STANDARD;
+    pdp_type_ca_info(header)->width = w;
+    pdp_type_ca_info(header)->height = h;
+    pdp_type_ca_info(header)->offset = 0;
+    pdp_type_ca_info(header)->currow = 0; /* only used for 1D ca */
+    pdp_type_ca_info(header)->currow = 0;
+    header->desc = 0;
+    header->desc = pdp_packet_ca_get_description(p);
+    //post("creating %s", header->desc->s_name);
+    return p;
+   
+}
+
+
+/* convert a CA packet to greyscale */
+
+inline void _pdp_type_ca2grey_convert_word(unsigned short int source, short int  *dest)
+{
+
+    int i;
+    for (i = 15; i>=0; i--){
+	dest[i] =  ((unsigned short)(((short int)(source & 0x8000)) >> 14)) >> 1;  
+	source <<= 1;
+    }
+}
+
+int pdp_type_ca2grey(int packet)
+{
+    int w, h, s, x, y, srcindex;
+    long long offset, xoffset, yoffset;
+    short int *dest;
+    unsigned short int *source;
+    t_pdp *header;
+    t_pdp *newheader;
+    int newpacket;
+    if (!(pdp_packet_ca_isvalid(packet))) return -1;
+
+    header = pdp_packet_header(packet);
+    w = pdp_type_ca_info(header)->width;
+    h = pdp_type_ca_info(header)->height;
+    s = w*h;
+    source = (unsigned short int *)pdp_packet_data(packet);
+    offset = pdp_type_ca_info(header)->offset;
+    yoffset = (offset / w) * w;
+    xoffset = offset % w;
+
+    //post("pdp_type_ca2grey: offset: %d, xoffset: %d, yoffset: %d", offset, xoffset, yoffset);
+
+    newpacket = pdp_packet_new_image_grey(w, h);
+    newheader = pdp_packet_header(newpacket);
+
+    if (!newheader) return -1;
+
+    //newheader->info.image.width = w;
+    //newheader->info.image.height = h;
+    //newheader->info.image.encoding = PDP_IMAGE_GREY;
+    dest = (short int *)pdp_packet_data(newpacket);
+
+
+#define check_srcindex \
+if (srcindex >= (s >> 4)) post ("pdp_type_ca2grey: srcindex out of bound");
+
+#define check_dstindex \
+if ((x+y) >= s) post ("pdp_type_ca2grey: dstindex out of bound");
+
+
+    /* debug : dont' shift offset 
+    if (0){
+       for(y=0; y< (h*w); y+=w){
+          for(x=0; x<w; x+=16){
+	    _pdp_type_ca2grey_convert_word (source[(x+y)>>4],  &dest[x+y]);
+	  }
+       }
+       return newpacket;
+    }
+    */
+
+    /* create top left */
+    for (y=0; y < (h*w) - yoffset; y+=w) { 
+	for (x=0; x< (w - xoffset); x+=16) {
+	    srcindex = (x+xoffset + y+yoffset) >> 4;
+	    //check_srcindex;
+	    //check_dstindex;
+	    _pdp_type_ca2grey_convert_word (source[srcindex],  &dest[x+y]);
+	}
+    }
+	    
+    /* create top right */
+    for (y=0; y < (h*w) - yoffset; y+=w) { 
+	for (x = (w - xoffset); x < w; x+=16) {
+	    srcindex = (x+xoffset-w + y+yoffset) >> 4;
+	    //check_srcindex;
+	    //check_dstindex;
+	    _pdp_type_ca2grey_convert_word (source[srcindex],  &dest[x+y]);
+	}
+    }
+	    
+    /* create bottom left */
+    for (y=(h*w) - yoffset; y < h*w; y+=w) { 
+	for (x=0; x< (w - xoffset); x+=16) {
+	    srcindex = (x+xoffset + y+yoffset-(w*h)) >> 4;
+	    //check_srcindex;
+	    //check_dstindex;
+	    _pdp_type_ca2grey_convert_word (source[srcindex],  &dest[x+y]);
+	}
+    }
+	    
+    /* create bottom right */
+    for (y=(h*w) - yoffset; y < h*w; y+=w) { 
+	for (x = (w - xoffset); x < w; x+=16) {
+	    srcindex = (x+xoffset-w + y+yoffset-(w*h)) >> 4;
+	    //check_srcindex;
+	    //check_dstindex;
+	    _pdp_type_ca2grey_convert_word (source[srcindex],  &dest[x+y]);
+	}
+    }
+	    
+
+    return newpacket;
+
+}
+
+
+inline unsigned short int _pdp_type_grey2ca_convert_word(short int  *src, short int threshold)
+{
+    short int tmp;
+    short int dest = 0;
+    int i;
+
+    for (i = 15; i >= 0; i--){
+	dest <<= 1;
+	dest |= (src[i] > threshold);
+    }
+
+    return dest;
+}
+
+
+
+int pdp_type_grey2ca(int packet, short int threshold)
+{
+    int w, h, s, x, y, srcindex;
+    long long offset, xoffset, yoffset;
+    short int *dest;
+    short int *source;
+    t_pdp *header;
+    t_pdp *newheader;
+    int newpacket;
+    if (!(pdp_packet_image_isvalid(packet))) return -1;
+
+    header = pdp_packet_header(packet);
+    w = header->info.image.width;
+    h = header->info.image.height;
+    s = w*h;
+    source = (unsigned short int *)pdp_packet_data(packet);
+
+    if ( (PDP_IMAGE_GREY != header->info.image.encoding)
+	 && (PDP_IMAGE_YV12 != header->info.image.encoding)) return -1;
+
+    newpacket = pdp_packet_new_ca(PDP_CA_STANDARD, w, h);
+    newheader = pdp_packet_header(newpacket);
+
+    if (!newheader) return -1;
+
+    dest = (short int *)pdp_packet_data(newpacket);
+
+    for(y=0; y< (h*w); y+=w){
+	for(x=0; x<w; x+=16){
+	    dest[(x+y)>>4] = _pdp_type_grey2ca_convert_word (&source[x+y], threshold);
+	}
+    }
+    return newpacket;
+
+
+}
+
+/* returns a pointer to the ca subheader given the pdp header */
+t_ca *pdp_type_ca_info(t_pdp *x){return (t_ca *)(&x->info.raw);}
+
+
+void pdp_ca_setup(void);
+void pdp_ca2image_setup(void);
+void pdp_image2ca_setup(void);
+
+
+static int _ca_to_image(int packet, t_pdp_symbol *template)
+{
+    return pdp_type_ca2grey(packet);
+}
+
+static int _image_to_ca(int packet, t_pdp_symbol *template)
+{
+    // convert with default threshold == 0.5
+    return pdp_type_grey2ca(packet, 0.5f);
+}
+
+void pdp_scaf_setup(void)
+{
+
+    t_pdp_conversion_program *program;
+
+    /* babble */
+    post ("PDP: pdp_scaf extension library");
+
+    /* setup modules */
+    pdp_ca_setup();
+    pdp_ca2image_setup();
+    pdp_image2ca_setup();
+
+    /* setup type conversion */
+    program = pdp_conversion_program_new(_ca_to_image, 0);
+    pdp_type_register_conversion(pdp_gensym("ca/*/*"), pdp_gensym("image/*/*"), program);
+    pdp_type_register_conversion(pdp_gensym("ca/*/*"), pdp_gensym("image/grey/*"), program);
+
+    program = pdp_conversion_program_new(_image_to_ca, 0);
+    pdp_type_register_conversion(pdp_gensym("image/grey/*"), pdp_gensym("ca/*/*"), program);
+
+
+   
+    
+}
+
+
+
+
+#ifdef __cplusplus
+}
+#endif
diff --git a/scaf/pdp/scaf_feeder.s b/scaf/pdp/scaf_feeder.s
new file mode 100644
index 0000000..e7ef3c6
--- /dev/null
+++ b/scaf/pdp/scaf_feeder.s
@@ -0,0 +1,50 @@
+#     Pure Data Packet - scaf feeder routine.
+#    Copyright (c) by Tom Schouten <pdp@zzz.kotnet.org>
+# 
+#    This program is free software; you can redistribute it and/or modify
+#    it under the terms of the GNU General Public License as published by
+#    the Free Software Foundation; either version 2 of the License, or
+#    (at your option) any later version.
+# 
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU General Public License for more details.
+# 
+#    You should have received a copy of the GNU General Public License
+#    along with this program; if not, write to the Free Software
+#    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+#
+
+# for dup
+.include "../compiler/scafmacro.s"
+
+
+# *rg is only used for returning the stack pointer
+# the 4 bit counter is using registers mm4-mm7 now
+# long long scaf_feeder(void *tos, void *rg, *void() ca_rule, void *env)
+.globl scaf_feeder
+.type scaf_feeder, @function
+scaf_feeder:	
+	pushl %ebp
+	movl %esp, %ebp
+	push %esi
+	push %edi
+	
+	movl 20(%ebp), %edi	# load env ptr
+	movl 8(%ebp), %esi	# load TOS2 ptr
+	movl 16(%ebp), %eax	# address of ca routine
+	pcmpeqw %mm3, %mm3	# load 1 reg
+
+	call *%eax		# TOS = 32x2 cell result
+	dup			# push %mm0 to memory
+	movl (%esi), %eax
+	movl 4(%esi), %edx
+	lea 16(%esi), %esi	# discard stack
+	movl %esi, (%edi)	# store for stack underflow check
+
+	emms
+	pop %edi
+	pop %esi
+	leave
+	ret
diff --git a/scaf/rules/Makefile b/scaf/rules/Makefile
new file mode 100644
index 0000000..997207c
--- /dev/null
+++ b/scaf/rules/Makefile
@@ -0,0 +1,14 @@
+OBJ = carules.scafo
+
+.SUFFIXES: .scaf
+.SUFFIXES: .scafo
+
+.scaf.scafo:
+	../compiler/scafc $*.scaf
+
+all:	$(OBJ)
+
+clean:
+	rm -f *.scafo
+	rm -f *.s
+	rm -f *~
diff --git a/scaf/rules/carules.scaf b/scaf/rules/carules.scaf
new file mode 100644
index 0000000..6725641
--- /dev/null
+++ b/scaf/rules/carules.scaf
@@ -0,0 +1,118 @@
+(	Pure Data Packet - ca rules library.					)
+(	Copyright (c) by Tom Schouten <pdp@zzz.kotnet.org>			)
+(										) 
+(	This program is free software; you can redistribute it and/or modify	)
+(	it under the terms of the GNU General Public License as published by	)
+(	the Free Software Foundation; either version 2 of the License, or	)
+(	[at your option] any later version.					)
+(										) 
+(	This program is distributed in the hope that it will be useful,		)
+(	but WITHOUT ANY WARRANTY; without even the implied warranty of		)
+(	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the		)
+(	GNU General Public License for more details.				)
+(										)
+(	You should have received a copy of the GNU General Public License	)
+(	along with this program; if not, write to the Free Software		)
+(	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.		)
+
+
+
+( this is the standard ca rules library )
+( a rule that is accessible from the ouside should start with "rule_" )
+( and has to return exactly one item on the stack (this is checked in pdp_ca) )
+
+
+( a word is a sequence of non whitespace characters (\S+) )
+( words are separated by whitespace (\s+)  )
+( so "word ;" is not the same as "word;" )
+
+( all words between the "(" word and the ")" word are ignored )
+
+( ":" starts a definition, the next word is the name of the new word )
+( newline ends a definition )
+
+( no more than one definition per line )
+( no more than one line per definition )
+
+( ";" returns to calling word )
+( if no ";" is encountered the next defined word is executed )
+( this is to have multiple entry points )
+( multiple exit points don't make sense since there are no conditional words )
+
+
+
+: +(4) ++++ ; 						( 4 bit add TOS - carry on TOS )
+: +(3) +++ ;						( 3 bit add TOS - carry on TOS )
+: +(2) ++ ;						( 2 bit add TOS - carry on TOS )
+
+: +top @-+ +(4) drop @0+ +(4) drop @++ +(4) ;		( add top row to reg - carry on TOS ) 
+: +mid @-0 +(4) drop @00 +(4) drop @+0 +(4) ;		( add mid row to reg - carry on TOS )
+: +bot @-- +(4) drop @0- +(4) drop @+- +(4) ;		( add bot row to reg - carry on TOS )
+: +all +top drop +mid drop +bot ;			( add all cells to reg - carry on TOS )
+
+: +mid-1 @-0 +(4) drop @+0 +(4) ;			( add mid row except center element to reg - carry on TOS )
+: +all-1 +top drop +mid-1 drop +bot ;			( add all cells expet middle one to reg - carry on TOS )
+
+
+: countall a-0 +all drop ;				( count all cells - no stack effect )
+: countall-1 a-0 +all-1 drop ;				( count all cells except middle one - no stack effect )
+
+: +topbot  @0+ +(3) drop @0- +(3) ;
+: +leftright  @+0 +(3) drop @-0 +(3) ;
+: +star +topbot drop +leftright ;
+: countstar a-0 +star drop ;
+
+: =2or3? @a2 not @a1 and ;	 			( sum equal to 2 or 3? only checks 3 bits )
+: =3? =2or3? @a0 and ;					( sum equal to 3 ? )
+: =2? =2or3? @a0 not and ;				( sum equal to 2 ? )
+: =4? @a2 @a1 not and @a0 not and ;			( sum equal to 4 ? )
+
+
+
+( some test rules )
+
+( : rule_one 1 ; )
+( : rule_zero 0 ; )
+( : rule_id @00 ; )
+
+
+: rule_shiftleft @+0 ;
+: rule_shifttop  @0- ;
+: rule_shiftbot  @0+ ;
+: rule_shifttopright @-- ;
+: rule_strobe @00 not ;
+
+( game of life )
+
+: rule_gameoflife countall-1 =2? @00 and =3? or ;
+
+( wolfram's rule 110)
+
+: rule_w110 @00 @+0 and not @-0 @00 @+0 or or and ;
+
+
+( some other rules )
+
+: rule_w110mod @0+ @+0 and not @-+ @0+ @++ or or and ;
+
+: rule_w110mod2 @0+ @+0 and not @-+ @0+ @+0 or or and ;
+: rule_w110mod3 @0+ @++ and not @-+ @0+ @++ or or and @-0 @00 @+0 or or and ;
+
+: rule_golmod countall-1 =3? @00 and =2? or ;
+: rule_golmod2 countall-1 =2? @0+ and =3? or ;
+: rule_golmod3 countall-1 =2? @++ and =3? or ;
+: rule_golmod4 countall-1 =2? @++ @-- or and =3? or ;
+: rule_golmod5 countall-1 =2? @++ @-- or and =3? @+- and or ;
+: rule_golmod6 countall-1 =2? @++ @-- or and =3? @+- and or @0+ or ;
+: rule_golmod7 countall-1 =2? @++ @-- or and =3? @+- and or @0+ or @00 and ;
+
+( ca's with a short settling time )
+
+: rule_block countstar =4? not =2? and @00 or ;
+: rule_noiseedges countstar =4? =3? or not =2? and @00 or @++ xor ;
+: rule_noiseplanes countstar =4? =3? or not =2? and @00 or @++ xor @-- xor ;
+
+
+( : rule_noiseplanes countstar =4? =3? or not =2? and @00 or @++ xor @-- xor ; )
+
+: rule_fire countall-1 =2? @0+ and =3? or ;
diff --git a/scaf/test/test_pdp_ca.pd b/scaf/test/test_pdp_ca.pd
new file mode 100644
index 0000000..1b84312
--- /dev/null
+++ b/scaf/test/test_pdp_ca.pd
@@ -0,0 +1,132 @@
+#N canvas 650 350 625 557 10;
+#X obj 287 82 openpanel;
+#X msg 287 56 bang;
+#X msg 288 110 open \$1;
+#X obj 230 191 pdp_ca;
+#X obj 193 76 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1
+-1;
+#X obj 223 80 metro 40;
+#X msg 211 56 bang;
+#X msg 247 56 stop;
+#X obj 146 235 pdp_xv;
+#X obj 28 31 t b b b;
+#X obj 11 7 loadbang;
+#X msg 99 80 rule id;
+#X msg 328 155 ca 256 256;
+#X msg 256 296 rule shifttopright;
+#X msg 331 134 ca 64 64;
+#X msg 262 270 rule shiftleft;
+#X msg 298 216 random;
+#X msg 251 321 rule gameoflife;
+#X floatatom 344 52 5 0 0;
+#X msg 331 184 ca 1024 1024;
+#X floatatom 279 154 5 0 0;
+#X msg 357 106 ca 512 512;
+#X msg 363 80 ca 320 240;
+#X obj 211 120 pdp_v4l;
+#X obj 179 99 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1
+-1;
+#X obj 138 53 metro 40;
+#X msg 126 29 bang;
+#X msg 162 29 stop;
+#X floatatom 205 28 5 0 0;
+#X msg 243 348 rule w110;
+#X msg 245 371 rule w110mod;
+#X msg 54 371 rule w110mod2;
+#X msg 387 47 ca 640 394;
+#X obj 481 289 count;
+#X obj 397 248 route 0 1 2 3;
+#X floatatom 517 254 5 0 0;
+#X msg 466 184 bang;
+#X msg 502 184 stop;
+#X floatatom 552 171 5 0 0;
+#X obj 478 208 metro 1000;
+#X msg 258 403 rule golmod;
+#X floatatom 34 129 5 0 0;
+#X obj 90 207 pdp_bqt;
+#X msg 62 107 dim 64 64;
+#X msg 44 167 hpf \$1 0.5;
+#X msg 272 430 rule golmod2;
+#X msg 273 467 rule golmod3;
+#X msg 277 494 rule golmod4;
+#X msg 280 515 rule golmod5;
+#X msg 283 537 rule golmod6;
+#X msg 380 403 rule golmod7;
+#X obj 46 267 pdp_mix;
+#X floatatom 120 297 5 0 0;
+#X msg 61 462 type grey;
+#X msg 112 407 rule w110mod3;
+#X msg 64 490 type yv12;
+#X msg 438 471 dim 512 512;
+#X obj 270 134 tgl 15 0 empty empty empty 0 -6 0 8 -262144 -1 -1 0
+1;
+#X msg 463 111 ca 1024 512;
+#X msg 105 4 open /home/tom/pd/packet/scaf/modules/carules.scafo;
+#X msg 163 468 rule toomuch;
+#X msg 165 500 rule underflow;
+#X connect 0 0 2 0;
+#X connect 1 0 0 0;
+#X connect 2 0 3 0;
+#X connect 3 0 8 0;
+#X connect 4 0 3 0;
+#X connect 5 0 3 0;
+#X connect 6 0 5 0;
+#X connect 7 0 5 0;
+#X connect 9 1 11 0;
+#X connect 9 2 59 0;
+#X connect 10 0 9 0;
+#X connect 11 0 3 0;
+#X connect 12 0 3 0;
+#X connect 13 0 3 0;
+#X connect 14 0 3 0;
+#X connect 15 0 3 0;
+#X connect 16 0 3 0;
+#X connect 17 0 3 0;
+#X connect 18 0 5 1;
+#X connect 19 0 3 0;
+#X connect 20 0 3 2;
+#X connect 21 0 3 0;
+#X connect 22 0 3 0;
+#X connect 23 0 51 1;
+#X connect 23 0 3 1;
+#X connect 24 0 23 0;
+#X connect 25 0 24 0;
+#X connect 26 0 25 0;
+#X connect 27 0 25 0;
+#X connect 28 0 25 1;
+#X connect 29 0 3 0;
+#X connect 30 0 3 0;
+#X connect 31 0 3 0;
+#X connect 32 0 3 0;
+#X connect 33 0 34 0;
+#X connect 34 0 30 0;
+#X connect 34 1 17 0;
+#X connect 34 2 40 0;
+#X connect 34 3 17 0;
+#X connect 35 0 33 1;
+#X connect 36 0 39 0;
+#X connect 37 0 39 0;
+#X connect 38 0 39 1;
+#X connect 39 0 33 0;
+#X connect 40 0 3 0;
+#X connect 41 0 44 0;
+#X connect 42 0 8 0;
+#X connect 43 0 23 0;
+#X connect 44 0 42 0;
+#X connect 45 0 3 0;
+#X connect 46 0 3 0;
+#X connect 47 0 3 0;
+#X connect 48 0 3 0;
+#X connect 49 0 3 0;
+#X connect 50 0 3 0;
+#X connect 51 0 8 0;
+#X connect 52 0 51 2;
+#X connect 53 0 23 0;
+#X connect 54 0 3 0;
+#X connect 55 0 23 0;
+#X connect 56 0 8 0;
+#X connect 57 0 20 0;
+#X connect 58 0 3 0;
+#X connect 59 0 3 0;
+#X connect 60 0 3 0;
+#X connect 61 0 3 0;
diff --git a/scaf/test/test_pdp_ca2.pd b/scaf/test/test_pdp_ca2.pd
new file mode 100644
index 0000000..9561d9d
--- /dev/null
+++ b/scaf/test/test_pdp_ca2.pd
@@ -0,0 +1,154 @@
+#N canvas 454 152 625 557 10;
+#X obj 325 83 openpanel;
+#X msg 325 57 bang;
+#X msg 326 111 open \$1;
+#X obj 428 234 pdp_ca;
+#X obj 256 149 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1
+-1;
+#X obj 223 80 metro 40;
+#X msg 211 56 bang;
+#X msg 247 56 stop;
+#X obj 402 407 pdp_xv;
+#X obj 28 31 t b b b;
+#X obj 11 7 loadbang;
+#X msg 391 99 ca 256 256;
+#X msg 394 78 ca 64 64;
+#X msg 298 216 random;
+#X msg 251 321 rule gameoflife;
+#X floatatom 490 187 5 0 0;
+#X msg 420 50 ca 512 512;
+#X obj 107 188 pdp_v4l;
+#X obj 97 127 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1
+-1;
+#X msg 243 348 rule w110;
+#X msg 245 371 rule w110mod;
+#X msg 258 403 rule golmod;
+#X msg 272 430 rule golmod2;
+#X msg 273 467 rule golmod3;
+#X msg 277 494 rule golmod4;
+#X msg 280 515 rule golmod5;
+#X msg 283 537 rule golmod6;
+#X obj 481 167 tgl 15 0 empty empty empty 0 -6 0 8 -262144 -1 -1 0
+1;
+#X msg 526 55 ca 1024 512;
+#X obj 426 294 pdp_ca2image;
+#X obj 104 228 pdp_image2ca;
+#X obj 136 155 metro 40;
+#X msg 124 131 bang;
+#X msg 160 131 stop;
+#X floatatom 510 273 5 0 0;
+#X obj 501 253 tgl 15 0 empty empty empty 0 -6 0 8 -262144 -1 -1 0
+1;
+#X msg 468 416 rule gameoflife;
+#X msg 450 455 rule golmod6;
+#X msg 380 440 rule golmod3;
+#X msg 159 287 rules;
+#X floatatom 27 213 5 0 0;
+#X msg 40 319 ruleindex \$1;
+#X obj 31 254 t b f;
+#X msg 52 78 rule gameoflife;
+#X floatatom 193 198 5 0 0;
+#X msg 504 143 close;
+#X msg 149 448 rule test1;
+#X obj 181 178 hsl 128 15 0 1 0 0 empty empty empty -2 -6 0 8 -262144
+-1 -1 0 1;
+#X msg 5 129 dim 640 480;
+#X obj 156 51 pdp_qt;
+#X msg 174 23 open /home/ben/MOV/test1.mov;
+#X floatatom 93 31 5 0 0;
+#X msg 65 56 autoplay 1;
+#X obj 144 25 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1
+-1;
+#X msg 22 94 loop 1;
+#X obj 439 483 osc~ 150;
+#X obj 439 508 *~ 0.1;
+#X obj 437 536 dac~;
+#X floatatom 282 57 5 0 0;
+#X msg 503 113 ca 32 32;
+#X obj 428 322 pdp_motion_blur;
+#X obj 488 349 pdp_gradient;
+#X obj 425 382 pdp_mix;
+#X floatatom 508 380 5 0 0;
+#X floatatom 204 128 5 0 0;
+#X obj 39 399 pdp_control;
+#X obj 83 476 pdp_control;
+#X obj 84 519 print two;
+#X obj 39 438 print one;
+#X obj 275 149 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1
+-1;
+#X obj 265 128 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1
+-1;
+#X msg 38 374 thread \$1;
+#X obj 32 349 tgl 15 0 empty empty empty 0 -6 0 8 -262144 -1 -1 0 1
+;
+#X msg 105 4 open /home/tom/pd/packet/scaf/rules/carules.scafo;
+#X connect 0 0 2 0;
+#X connect 1 0 0 0;
+#X connect 2 0 3 0;
+#X connect 3 0 29 0;
+#X connect 4 0 3 0;
+#X connect 5 0 3 0;
+#X connect 6 0 5 0;
+#X connect 7 0 5 0;
+#X connect 9 1 43 0;
+#X connect 9 2 73 0;
+#X connect 10 0 9 0;
+#X connect 11 0 3 0;
+#X connect 12 0 3 0;
+#X connect 13 0 3 0;
+#X connect 14 0 3 0;
+#X connect 15 0 3 2;
+#X connect 16 0 3 0;
+#X connect 17 0 30 0;
+#X connect 17 0 62 1;
+#X connect 18 0 17 0;
+#X connect 19 0 3 0;
+#X connect 20 0 3 0;
+#X connect 21 0 3 0;
+#X connect 22 0 3 0;
+#X connect 23 0 3 0;
+#X connect 24 0 3 0;
+#X connect 25 0 3 0;
+#X connect 26 0 3 0;
+#X connect 27 0 15 0;
+#X connect 28 0 3 0;
+#X connect 29 0 61 0;
+#X connect 30 0 3 0;
+#X connect 31 0 17 0;
+#X connect 32 0 31 0;
+#X connect 33 0 31 0;
+#X connect 35 0 34 0;
+#X connect 39 0 3 0;
+#X connect 40 0 42 0;
+#X connect 41 0 3 0;
+#X connect 42 0 13 0;
+#X connect 42 1 41 0;
+#X connect 43 0 3 0;
+#X connect 44 0 30 1;
+#X connect 45 0 3 0;
+#X connect 46 0 3 0;
+#X connect 47 0 44 0;
+#X connect 48 0 17 0;
+#X connect 49 0 30 0;
+#X connect 50 0 49 0;
+#X connect 51 0 49 0;
+#X connect 52 0 49 0;
+#X connect 53 0 49 0;
+#X connect 54 0 49 0;
+#X connect 55 0 56 0;
+#X connect 56 0 57 0;
+#X connect 56 0 57 1;
+#X connect 58 0 5 1;
+#X connect 59 0 3 0;
+#X connect 61 0 62 0;
+#X connect 62 0 8 0;
+#X connect 63 0 62 2;
+#X connect 64 0 31 1;
+#X connect 65 0 68 0;
+#X connect 66 0 67 0;
+#X connect 69 0 3 0;
+#X connect 70 0 4 0;
+#X connect 70 0 69 0;
+#X connect 71 0 65 0;
+#X connect 72 0 71 0;
+#X connect 73 0 3 0;
diff --git a/scaf/test/test_pdp_ca3.pd b/scaf/test/test_pdp_ca3.pd
new file mode 100644
index 0000000..1dde086
--- /dev/null
+++ b/scaf/test/test_pdp_ca3.pd
@@ -0,0 +1,161 @@
+#N canvas 540 210 625 557 10;
+#X obj 325 83 openpanel;
+#X msg 325 57 bang;
+#X msg 326 111 open \$1;
+#X obj 427 212 pdp_ca;
+#X obj 202 87 metro 40;
+#X msg 211 56 bang;
+#X msg 247 56 stop;
+#X obj 391 414 pdp_xv;
+#X obj 28 31 t b b b;
+#X obj 11 7 loadbang;
+#X msg 391 99 ca 256 256;
+#X msg 394 78 ca 64 64;
+#X msg 229 230 random;
+#X msg 251 321 rule gameoflife;
+#X floatatom 490 187 5 0 0;
+#X msg 420 50 ca 512 512;
+#X obj 97 127 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1
+-1;
+#X msg 243 348 rule w110;
+#X msg 245 371 rule w110mod;
+#X msg 258 403 rule golmod;
+#X msg 272 430 rule golmod2;
+#X msg 273 467 rule golmod3;
+#X msg 277 494 rule golmod4;
+#X msg 280 515 rule golmod5;
+#X msg 283 537 rule golmod6;
+#X obj 481 167 tgl 15 0 empty empty empty 0 -6 0 8 -262144 -1 -1 0
+1;
+#X msg 526 55 ca 1024 512;
+#X obj 427 236 pdp_ca2image;
+#X floatatom 530 253 5 0 0;
+#X msg 468 416 rule gameoflife;
+#X msg 450 455 rule golmod6;
+#X msg 380 440 rule golmod3;
+#X msg 159 287 rules;
+#X floatatom 27 213 5 0 0;
+#X msg 40 319 ruleindex \$1;
+#X obj 31 254 t b f;
+#X msg 52 78 rule gameoflife;
+#X msg 504 143 close;
+#X msg 149 448 rule test1;
+#X obj 156 51 pdp_qt;
+#X msg 174 23 open /home/ben/MOV/test1.mov;
+#X floatatom 93 31 5 0 0;
+#X msg 65 56 autoplay 1;
+#X obj 144 25 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1
+-1;
+#X floatatom 282 57 5 0 0;
+#X msg 503 113 ca 32 32;
+#X obj 39 399 pdp_control;
+#X obj 83 476 pdp_control;
+#X obj 84 519 print two;
+#X obj 39 438 print one;
+#X msg 38 374 thread \$1;
+#X obj 32 349 tgl 15 0 empty empty empty 0 -6 0 8 -262144 -1 -1 0 1
+;
+#X obj 428 352 pdp_zrot;
+#X obj 428 324 pdp_mix;
+#X floatatom 523 305 5 0 0;
+#X floatatom 523 327 5 0 0;
+#X floatatom 523 349 5 0 0;
+#X obj 427 264 pdp_blur;
+#X obj 428 289 pdp_gain;
+#X floatatom 530 277 5 0 0;
+#X floatatom 260 120 5 0 0;
+#X obj 433 159 bng 15 250 50 0 empty empty empty 0 -6 0 8 -262144 -1
+-1;
+#X obj 375 364 pdp_xv;
+#X floatatom 144 162 5 0 0;
+#X msg 144 191 vshift \$1;
+#X msg 549 160 1D;
+#X msg 579 160 2D;
+#X msg 253 183 fullscreen1D \$1;
+#X obj 253 164 tgl 15 0 empty empty empty 0 -6 0 8 -262144 -1 -1 0
+1;
+#X msg 583 272 3;
+#X msg 586 324 1.05;
+#X msg 586 351 2;
+#X msg 588 297 0.97;
+#X msg 581 243 0.1;
+#X msg 444 25 ca 512 256;
+#X obj 434 385 pdp_gain;
+#X floatatom 507 380 5 0 0;
+#X msg 105 4 open /home/tom/pd/packet/scaf/rules/carules.scafo;
+#X msg 248 295 rule fire;
+#X msg 140 141 0;
+#X msg 175 140;
+#X connect 0 0 2 0;
+#X connect 1 0 0 0;
+#X connect 2 0 3 0;
+#X connect 3 0 27 0;
+#X connect 4 0 3 0;
+#X connect 5 0 4 0;
+#X connect 6 0 4 0;
+#X connect 8 1 36 0;
+#X connect 8 2 77 0;
+#X connect 9 0 8 0;
+#X connect 10 0 3 0;
+#X connect 11 0 3 0;
+#X connect 12 0 3 0;
+#X connect 13 0 3 0;
+#X connect 14 0 3 2;
+#X connect 15 0 3 0;
+#X connect 17 0 3 0;
+#X connect 18 0 3 0;
+#X connect 19 0 3 0;
+#X connect 20 0 3 0;
+#X connect 21 0 3 0;
+#X connect 22 0 3 0;
+#X connect 23 0 3 0;
+#X connect 24 0 3 0;
+#X connect 25 0 14 0;
+#X connect 26 0 3 0;
+#X connect 27 0 57 0;
+#X connect 27 0 62 0;
+#X connect 28 0 57 1;
+#X connect 32 0 3 0;
+#X connect 33 0 35 0;
+#X connect 34 0 3 0;
+#X connect 35 0 12 0;
+#X connect 35 1 34 0;
+#X connect 36 0 3 0;
+#X connect 37 0 3 0;
+#X connect 38 0 3 0;
+#X connect 40 0 39 0;
+#X connect 41 0 39 0;
+#X connect 42 0 39 0;
+#X connect 43 0 39 0;
+#X connect 44 0 4 1;
+#X connect 45 0 3 0;
+#X connect 50 0 46 0;
+#X connect 51 0 50 0;
+#X connect 52 0 53 1;
+#X connect 52 0 75 0;
+#X connect 53 0 52 0;
+#X connect 54 0 53 2;
+#X connect 55 0 52 1;
+#X connect 56 0 52 2;
+#X connect 57 0 58 0;
+#X connect 58 0 53 0;
+#X connect 59 0 58 1;
+#X connect 61 0 3 0;
+#X connect 63 0 64 0;
+#X connect 64 0 3 0;
+#X connect 65 0 3 0;
+#X connect 66 0 3 0;
+#X connect 67 0 3 0;
+#X connect 68 0 67 0;
+#X connect 69 0 59 0;
+#X connect 70 0 55 0;
+#X connect 71 0 56 0;
+#X connect 72 0 54 0;
+#X connect 73 0 28 0;
+#X connect 74 0 3 0;
+#X connect 75 0 7 0;
+#X connect 76 0 75 1;
+#X connect 77 0 3 0;
+#X connect 78 0 3 0;
+#X connect 79 0 63 0;
+#X connect 80 0 63 0;