eased cross-compilation

svn path=/trunk/externals/iem/iemmatrix/; revision=4225

2 files changed, 45 insertions, 21 deletions

diff --git a/INSTALL.txt b/INSTALL.txt
index 568389e..6690987 100644
--- a/INSTALL.txt
+++ b/INSTALL.txt
@@ -16,14 +16,6 @@ Installation/Compilation instructions for "iemmatrix"
 	help-patches are installed into extra/iemmatrix; if you are running an old version
 	of pd, the help-files will be installed into doc/5.reference/iemmatrix
 
-CrossCompilation for w32 with MinGW (http://www.mingw.org) on linux-systems
-	you need a cross-compilation tool-chain for windows (there is a debian-package mingw32)
-	run "./configure" and specify the path to your "m_pd.h" (with --includedir) and to your "pd.lib" (with --libdir)
-	don't forget to override the default extension ("pd_linux" on linux-systems) with the more appropriate "dll".
-	on bash this looks like:
-	 % ./configure  --with-extension=dll --host=i586-mingw32msvc --includedir=/path/to/w32-pd/src/ -libdir=/path/to/w32-pd/bin/
-	now run "make" and enjoy.
-	
 	
 2) mac OS-X:
 ============
@@ -45,6 +37,19 @@ CrossCompilation for w32 with MinGW (http://www.mingw.org) on linux-systems
 	http://lists.puredata.info/pipermail/pd-list/2005-05/028266.html
 	i will support a makefile for msvc as soon as i boot into windows again
 
+CrossCompilation for w32 with MinGW (http://www.mingw.org) on linux-systems
+	you need a cross-compilation tool-chain for windows (there is a debian-package mingw32)
+	run "./configure" and specify the path to your windows installation of pd
+	the simplest way is to give the PDPATH via the "--with-pd=PDPATH" flag; you have to make 
+	sure that the pd-sources are in PDPATH/src and the compiled pd-binaries in PDPATH/bin
+	if those are scattered across you filesystem you can alternatively give explicitely the paths
+	to your "m_pd.h" (with --includedir) and to your "pd.lib" (with --libdir)
+	don't forget to override the default extension ("pd_linux" on linux-systems) with the more appropriate "dll".
+	on bash this looks like:
+	 % ./configure  --with-extension=dll --host=i586-mingw32msvc --with-pd=/path/to/w32-pd/ --disable-PIC
+	now run "make" and enjoy.
+	
+
 
 5) FreeBSD et al:
 =================
@@ -52,10 +57,3 @@ CrossCompilation for w32 with MinGW (http://www.mingw.org) on linux-systems
 	try the configure in iemmatrix/src
 	and report any success or failure
 
-
-
-
-
-
-
-
diff --git a/src/configure.ac b/src/configure.ac
index 498f0bb..c3119b9 100644
--- a/src/configure.ac
+++ b/src/configure.ac
@@ -20,7 +20,8 @@ AC_SUBST(INCLUDES)
 AC_ARG_WITH(pdversion, [  --with-pdversion=<ver>  enforce a certain pd-version (e.g. 0.37)])
 AC_ARG_WITH(version,   [  --with-version=<ver>    enforce a certain iemmatrix-version (e.g. 0.1)])
 AC_ARG_WITH(extension, [  --with-extension=<ext>  enforce a certain extension for the dynamic library (e.g. dll)])
-
+AC_ARG_WITH(pdpath,    [  --with-pd=</path/to/pd> where to look for pd-headers and and -libs])
+AC_ARG_ENABLE(PIC,     [  --disable-PIC           disable compilation with PIC-flag])
 
 dnl Checks for libraries.
 dnl Replace `main' with a function in -lc:
@@ -35,15 +36,22 @@ dnl Replace `main' with a function in -lstk:
 dnl AC_CHECK_LIB(stk, main, STK=yes)
 
 
-if test $includedir
-then
+if test "x$with_pd" != "x"; then
+ if test -d "${with_pd}/src"; then
+  INCLUDES="-I${with_pd}/src ${INCLUDES}"
+ fi
+ if test -d "${with_pd}/bin"; then
+  LIBS="-L${with_pd}/bin ${LIBS}"
+ fi
+fi
+
+if test "x$includedir" != "x"; then
  for id in $includedir
  do
    if test -d $id; then INCLUDES="-I$id $INCLUDES"; fi
  done
 fi
-if test $libdir
-then
+if test "x$libdir" != "x"; then
  for id in $libdir
  do
    if test -d $id; then LIBS="-L$id $LIBS"; fi
@@ -124,13 +132,31 @@ fi
 
 DFLAGS=""
 
+
+if test "x$enable_PIC" != "xno"; then
+AC_MSG_CHECKING("PIC")
+cat > conftest.c << EOF
+int main(){
+  return 0;
+}
+EOF
+if ${CC} ${INCLUDES} ${DFLAGS} -o conftest.o conftest.c ${CFLAGS} -fPIC > /dev/null 2>&1
+then
+  echo "yes"
+  CFLAGS="${CFLAGS} -fPIC"
+else
+  echo "no"
+fi
+fi
+
+
 dnl
 dnl  OK, checks for machines are here now
 dnl
 if test `uname -s` = Linux; 
 then
   LFLAGS="-export_dynamic  -shared"
-  CFLAGS="-fPIC $CFLAGS"
+  CFLAGS="$CFLAGS"
   EXT=pd_linux	
 fi