From eda7553c0655ab3134742f5114617b2190345ee1 Mon Sep 17 00:00:00 2001
From: randomguy3 <randomguy3@7c02a99a-9b00-45e3-bf44-6f3dd7fddb64>
Date: Mon, 6 Feb 2012 13:47:05 +0000
Subject: GTK: Add in a test for a sane Foundation (ie: gnustep-base)

git-svn-id: https://tikzit.svn.sourceforge.net/svnroot/tikzit/trunk@411 7c02a99a-9b00-45e3-bf44-6f3dd7fddb64
---
 tikzit/configure.ac |  5 +++++
 tikzit/m4/objc.m4   | 47 +++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 52 insertions(+)

diff --git a/tikzit/configure.ac b/tikzit/configure.ac
index 60bf0a6..4b9c65f 100644
--- a/tikzit/configure.ac
+++ b/tikzit/configure.ac
@@ -50,6 +50,11 @@ AS_IF([test "x$GNUSTEPLIBS" = "x"],
 AC_SUBST([GNUSTEPOBJCFLAGS])
 AC_SUBST([GNUSTEPLIBS])
 
+TZ_OBJC_FOUNDATION
+AS_IF([test "x$tz_cv_objc_foundation" != "xyes"],
+  [AC_MSG_ERROR([Objective C Foundation not found -- missing gnustep-base?])])
+AC_SUBST([GNUSTEPOBJCFLAGS])
+
 AC_ARG_WITH([poppler], AS_HELP_STRING([--without-poppler], [Ignore presence of poppler, disabling preview support]))
 
 AS_IF([test "x$with_poppler" != "xno"],
diff --git a/tikzit/m4/objc.m4 b/tikzit/m4/objc.m4
index 1016b07..72d2ee6 100644
--- a/tikzit/m4/objc.m4
+++ b/tikzit/m4/objc.m4
@@ -1,3 +1,50 @@
+# Checks for a working Foundation
+# tz_cv_objc_foundation
+# to either "yes" or "no"
+#
+AC_DEFUN([TZ_OBJC_FOUNDATION],
+[
+tz_old_objcflags="$OBJCFLAGS"
+OBJCFLAGS="$OBJCFLAGS `eval "gnustep-config --objc-flags"`"
+
+AC_CACHE_CHECK([for Objective C Foundation],
+	       [tz_cv_objc_foundation],
+[AC_COMPILE_IFELSE(
+  [AC_LANG_SOURCE([[
+#import <Foundation/Foundation.h>
+
+@interface TestObj : NSObject {
+	int intVar;
+	NSObject *objVar;
+	NSString *strVar;
+}
+-(id)init;
+@end
+
+@implementation TestObj
+-(id)init {
+	self = [super init];
+	intVar = 0;
+	objVar = nil;
+	strVar = @"Foo";
+	return self;
+}
+@end
+
+int main(void) {
+	TestObj *obj = [[TestObj alloc] init];
+	[obj release];
+	return 0;
+}
+   ]])],
+  [tz_cv_objc_foundation=yes],
+  [tz_cv_objc_foundation=no])])
+
+OBJCFLAGS="$tz_old_objcflags"
+
+])
+
+
 # Checks for Objective C 2 feature support
 # and sets the shell variables
 # tz_cv_objc_properties
-- 
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