disable modules

CMakeLists.txt

@@ -243,10 +243,6 @@ endif()
 if(APPLE_IOS)
 	set(CMAKE_XCODE_ATTRIBUTE_TARGETED_DEVICE_FAMILY "1,2") # iPhone + iPad
 	set(CMAKE_XCODE_ATTRIBUTE_GCC_WARN_64_TO_32_BIT_CONVERSION "NO")
-
-	# TODO: also enable for macOS
-	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fmodules")
-	set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fmodules")
 endif(APPLE_IOS)
 
 # Check if some platform-specific libraries are needed for linking

lib/CIOSUtils.m

@@ -10,7 +10,7 @@
 
 #import "CIOSUtils.h"
 
-@import Foundation;
+#import <Foundation/Foundation.h>
 
 static NSString *standardPathNative(NSSearchPathDirectory directory)
 {