From 5ae9dc358a93134d265daedab8d953f7d2f425ac Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?IOhannes=20m=20zm=C3=B6lnig?=
 <zmoelnig@users.sourceforge.net>
Date: Thu, 29 Sep 2005 08:03:16 +0000
Subject: adapted build-system to not use Make.source any longer but generate
 SOURCES on the fly added dependency support

svn path=/trunk/externals/zexy/; revision=3644
---
 src/Makefile.in  | 36 +++++++++++++++++++++++-------------
 src/configure.ac |  8 ++++++++
 src/zexy.c       |  2 +-
 3 files changed, 32 insertions(+), 14 deletions(-)

diff --git a/src/Makefile.in b/src/Makefile.in
index 5281070..5488c44 100644
--- a/src/Makefile.in
+++ b/src/Makefile.in
@@ -23,12 +23,13 @@ TARNAME =  $(LIBNAME)-@ZEXY_VERSION@.tgz
 .SUFFIXES: .$(EXT)
 
 # ICCFLAGS=-march=pentiumiii -axK
-PDCFLAGS = -g -O2 $(DEFS) $(IFLAGS) $(WFLAGS) $(LFLAGS) $(AFLAGS)
-CFLAGS = $(DEFS) $(IFLAGS) $(WFLAGS) @CFLAGS@
+Z_CFLAGS = $(DEFS) $(IFLAGS) $(WFLAGS) @CFLAGS@ -DPD $(CFLAGS)
+
+MAKEDEP_FLAGS = @MAKEDEP_FLAGS@
 
 LIBS = @LIBS@
 
-include Make.source
+SOURCES=$(sort $(filter %.c, $(wildcard *.c)))
 
 TARGETS = $(SOURCES:.c=.o)
 
@@ -40,11 +41,8 @@ $(LIBNAME): $(TARGETS)
 	$(LD) $(LFLAGS) -o $(LIBNAME).$(EXT) *.o $(LIBS)
 	$(STRIP) $(STRIPFLAGS) $(LIBNAME).$(EXT)
 
-.c.o:
-	$(CC) -c -o $@ $(CFLAGS) -DPD $*.c
-
-.o.$(EXT):
-	$(CC) -o $@ $(PDCFLAGS) -DPD $*.o
+$(TARGETS): %.o : %.c
+	$(CC) -c -o $@ $(Z_CFLAGS) $*.c
 
 
 clean:
@@ -52,9 +50,10 @@ clean:
 
 cleaner: clean
 	-rm -f *~ _* config.*
+	-rm -f *.d *.d.*
 
 cleanest: cleaner
-	-rm -f Makefile ../*.$(EXT) Make.source
+	-rm -f Makefile ../*.$(EXT)
 
 distclean: cleanest newmakefile
 
@@ -81,7 +80,18 @@ newmakefile:
 	echo "current:">Makefile
 	echo "	./configure && make">>Makefile
 
-make.source:
-	echo "SOURCES = \\"> Make.source
-	echo `ls z_*.c $(LIBNAME).c` >> Make.source
-	echo >> Make.source
+## dependencies: as proposed by the GNU-make documentation
+## see http://www.gnu.org/software/make/manual/html_node/make_47.html#SEC51
+-include $(SOURCES:.c=.d)
+%.d: %.c
+	@set -e; rm -f $@; \
+	 $(CC) $(MAKEDEP_FLAGS) $(Z_CFLAGS) $< > $@.$$$$; \
+	 sed 's,\($*\)\.o[ :]*,\1.o $@ : ,g' < $@.$$$$ > $@; \
+	 rm -f $@.$$$$
+
+
+Makefile: Makefile.in configure
+	./configure
+
+configure: configure.ac
+	autoconf
\ No newline at end of file
diff --git a/src/configure.ac b/src/configure.ac
index 2b81b3e..2ca7efc 100644
--- a/src/configure.ac
+++ b/src/configure.ac
@@ -97,6 +97,14 @@ AC_CHECK_HEADERS(stdlib.h stdio.h string.h math.h time.h sys/time.h)
 dnl Checks for typedefs, structures, and compiler characteristics.
 AC_HEADER_TIME
 
+### make-depend flags
+if test "x$ac_cv_c_compiler_gnu" = "xyes"; then
+    AC_SUBST(MAKEDEP_FLAGS, "-MM")
+else
+    AC_SUBST(MAKEDEP_FLAGS, "-M")
+fi
+
+
 dnl Checks for library functions.
 AC_FUNC_MMAP
 AC_CHECK_FUNCS(select socket strerror)
diff --git a/src/zexy.c b/src/zexy.c
index e4ff3a0..f121c22 100644
--- a/src/zexy.c
+++ b/src/zexy.c
@@ -121,7 +121,7 @@ static void *zexy_new(void)
   return (void *)x;
 }
 
-#include "z_zexy.c"
+void z_zexy_setup(void); /* defined in z_zexy.c */
 
 void zexy_setup(void) 
 {
-- 
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