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# 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"
])
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