1 files changed, 83 insertions, 0 deletions
diff --git a/macros/gnome-objc-checks.m4 b/macros/gnome-objc-checks.m4
new file mode 100644
index 0000000000..c69acb077e
--- /dev/null
+++ b/macros/gnome-objc-checks.m4
@@ -0,0 +1,83 @@
+AC_DEFUN([GNOME_CHECK_OBJC],
+[
+dnl Look for an ObjC compiler.
+dnl FIXME: extend list of possible names of ObjC compilers.
+  AC_CHECK_PROGS(OBJC, $OBJC egcs, "")
+  if test "x$OBJC" = "x" ; then
+    AC_CHECK_PROGS(OBJC, $OBJC egcc, "")
+    if test "x$OBJC" = "x" ; then
+      AC_CHECK_PROGS(OBJC, $OBJC gcc, "")
+    fi
+  fi
+
+  AC_REQUIRE([GNOME_PTHREAD_CHECK])
+
+  OBJC_LIBS="-lobjc $PTHREAD_LIB"
+  AC_CHECK_FUNC(sched_yield,,[
+    AC_CHECK_LIB(rt,sched_yield,
+      OBJC_LIBS="$OBJC_LIBS -lrt",[
+      AC_CHECK_LIB(posix4,sched_yield,
+        OBJC_LIBS="$OBJC_LIBS -lposix4",, 
+        $OBJC_LIBS)],
+      $OBJC_LIBS)])
+  AC_SUBST(OBJC_LIBS)
+
+  AC_CACHE_CHECK([if Objective C compiler ($OBJC) works],
+		 ac_cv_prog_objc_works, [
+    if test -n "$OBJC"; then
+      cat > conftest.m <<EOF
+#include <objc/Object.h>
+@interface myRandomObj : Object
+{
+}
+@end
+@implementation myRandomObj
+@end
+int main () {
+  /* No, you are not seeing double.  Remember that square brackets
+     are the autoconf m4 quotes.  */
+  id myid = [[myRandomObj alloc]];
+  [[myid free]];
+  return 0;
+}
+EOF
+
+      $OBJC $CFLAGS -o conftest $LDFLAGS conftest.m $OBJC_LIBS 1>&AC_FD_CC 2>&1
+      result=$?
+      rm -f conftest*
+
+      if test $result -eq 0; then
+        ac_cv_prog_objc_works=yes
+      fi
+    else
+      ac_cv_prog_objc_works=no
+    fi
+  ])
+
+  AM_CONDITIONAL(OBJECTIVE_C, test x$ac_cv_prog_objc_works = xyes)
+  dnl Also set the shell variable OBJECTIVE_C to "yes" or "no".
+  OBJECTIVE_C=$ac_cv_prog_objc_works
+])
+
+AC_DEFUN([GNOME_INIT_OBJC],
+[
+	AC_MSG_CHECKING(for an obGnomeConf.sh)
+	my_gnome_libdir=`$GNOME_CONFIG --libdir`
+	if test -f $my_gnome_libdir/obGnomeConf.sh; then
+	    . $my_gnome_libdir/obGnomeConf.sh
+	    AC_MSG_RESULT(found $my_gnome_libdir)
+	    ac_cv_have_gnome_objc=yes
+	else
+	    AC_MSG_RESULT(not found)
+	    AC_MSG_WARN(Could not find the obGnomeConf.sh file that is generated by gnome-objc install)
+	    ac_cv_have_gnome_objc=no
+	fi
+	
+	dnl Add a conditional on whether or not we have gnome-objc
+	AM_CONDITIONAL(HAVE_GNOME_OBJC, test x$ac_cv_have_gnome_objc = xyes)
+	HAVE_GNOME_OBJC=$ac_cv_have_gnome_objc
+
+	AC_SUBST(OBGNOME_INCLUDEDIR)
+	AC_SUBST(OBGNOME_LIBS)
+	AC_SUBST(OBGTK_LIBS)
+])