Move tikzit into "trunk" directory

git-svn-id: https://tikzit.svn.sourceforge.net/svnroot/tikzit/trunk@365 7c02a99a-9b00-45e3-bf44-6f3dd7fddb64

1 files changed, 87 insertions, 0 deletions

diff --git a/tikzit/m4/objc.m4 b/tikzit/m4/objc.m4
new file mode 100644
index 0000000..1016b07
--- /dev/null
+++ b/tikzit/m4/objc.m4
@@ -0,0 +1,87 @@
+# Checks for Objective C 2 feature support
+# and sets the shell variables
+# tz_cv_objc_properties
+# tz_cv_objc_fast_enumeration
+# tz_cv_objc_optional_keyword
+# to either "yes" or "no"
+#
+AC_DEFUN([TZ_OBJC2_FEATURES],
+[
+tz_old_objcflags="$OBJCFLAGS"
+OBJCFLAGS="$OBJCFLAGS `eval "gnustep-config --objc-flags"`"
+
+AC_CACHE_CHECK([for Objective C 2 @property support],
+	       [tz_cv_objc_properties],
+[AC_COMPILE_IFELSE(
+  [AC_LANG_SOURCE([[
+#import <Foundation/Foundation.h>
+
+@interface TestObj : NSObject {
+	int intProp1;
+	NSObject *copyObjProp;
+	NSObject *fooProp;
+}
+@property (assign,nonatomic) int intProp;
+@property (retain,readonly) NSObject *retainObjProp;
+@property (copy,readwrite) NSObject *copyObjProp;
+@property (retain,getter=foo,setter=foo1:) NSObject *fooProp;
+@end
+
+@implementation TestObj
+@synthesize intProp=intProp1;
+@dynamic retainObjProp;
+- (NSObject*) retainObjProp { return nil; }
+@synthesize copyObjProp;
+@synthesize fooProp;
+@end
+
+int main(void) {
+	TestObj *obj = [[TestObj alloc] init];
+	obj.intProp = 4;
+	NSObject *result = obj.retainObjProp;
+	return 0;
+}
+   ]])],
+  [tz_cv_objc_properties=yes],
+  [tz_cv_objc_properties=no])])
+
+
+AC_CACHE_CHECK([for Objective C 2 fast enumeration support],
+	       [tz_cv_objc_fast_enumeration],
+[AC_COMPILE_IFELSE(
+  [AC_LANG_SOURCE([[
+#import <Foundation/Foundation.h>
+
+int main(void) {
+	NSArray *array = [NSArray arrayWithObjects: @"One", @"Two", @"Three", @"Four", nil];
+	for (NSString *element in array) {
+		NSLog(@"element: %@", element);
+	}
+	return 0;
+}
+   ]])],
+  [tz_cv_objc_fast_enumeration=yes],
+  [tz_cv_objc_fast_enumeration=no])])
+
+AC_CACHE_CHECK([for Objective C 2 @optional support],
+	       [tz_cv_objc_optional_keyword],
+[AC_COMPILE_IFELSE(
+  [AC_LANG_SOURCE([[
+#import <Foundation/Foundation.h>
+
+@protocol Foo
+@optional
+- (void) foo;
+@required
+- (void) bar;
+@end
+
+int main(void) {
+	return 0;
+}
+   ]])],
+  [tz_cv_objc_optional_keyword=yes],
+  [tz_cv_objc_optional_keyword=no])])
+
+OBJCFLAGS="$tz_old_objcflags"
+])