diff --git a/cocoa/dlg.h b/cocoa/dlg.h
index c4e442e..b84f85d 100644
--- a/cocoa/dlg.h
+++ b/cocoa/dlg.h
@@ -1,4 +1,14 @@
+
+#ifndef DLG_H
+#define DLG_H
+
+#ifndef __has_extension
+#define __has_extension(x) 0
+#endif
+
 #include <objc/NSObjCRuntime.h>
+#include <stdlib.h>
+#include <sys/syslimits.h>
 
 typedef enum {
 	MSG_YESNO,
@@ -39,3 +49,5 @@ DlgResult fileDlg(FileDlgParams*);
 
 void* NSStr(void* buf, int len);
 void NSRelease(void* obj);
+
+#endif
diff --git a/cocoa/dlg.m b/cocoa/dlg.m
index 2b31dc9..91877cc 100644
--- a/cocoa/dlg.m
+++ b/cocoa/dlg.m
@@ -1,3 +1,9 @@
+
+// fix gcc 11+ macos 14+
+#ifndef __has_extension
+#define __has_extension(x) 0
+#endif
+
 #import <Cocoa/Cocoa.h>
 #include "dlg.h"
 
diff --git a/cocoa/dlg_darwin.go b/cocoa/dlg_darwin.go
index f59dd20..e6bf2e4 100644
--- a/cocoa/dlg_darwin.go
+++ b/cocoa/dlg_darwin.go
@@ -1,8 +1,6 @@
 package cocoa
 
 // #cgo darwin LDFLAGS: -framework Cocoa
-// #include <stdlib.h>
-// #include <sys/syslimits.h>
 // #include "dlg.h"
 import "C"