--- CMakeLists.txt.orig	2023-12-27 18:44:56.000000000 +0200
+++ CMakeLists.txt	2018-09-01 09:01:19.000000000 -0700
@@ -76,19 +76,15 @@
 
 ELSE  ( WIN32 )
   ## Unix and OS X...
-  IF ( APPLE )
-    # SET ( CMAKE_OSX_ARCHITECTURES "x86_64;i386" )
+  IF ( MACPORTS_APPLE )
     FIND_LIBRARY ( COCOA_LIBRARY Cocoa )
     INCLUDE_DIRECTORIES ( macosx )
-    INCLUDE_DIRECTORIES ( /Library/Frameworks/Tk.framework/Versions/8.6/PrivateHeaders )
-    INCLUDE_DIRECTORIES ( /System/Library/Frameworks/Tk.framework/Versions/8.5/Headers/tk-private )
-    INCLUDE_DIRECTORIES ( /System/Library/Frameworks/Tk.framework/Versions/8.5/Headers/tk-private )
     ADD_DEFINITIONS     ( -DMAC_TK_COCOA -DMAC_OSX_TK)
     ADD_DEFINITIONS     ( -DMAC_OSX_TK )
     ADD_DEFINITIONS     ( -std=gnu99 )
     ADD_DEFINITIONS     ( -x objective-c )
-    # ADD_DEFINITIONS     ( -fobjc-gc  )
-    ADD_DEFINITIONS     ( -fobjc-arc )
+#MACPORTS_DO_NOT_USE_GC    ADD_DEFINITIONS     ( -fobjc-gc  )
+#MACPORTS_DO_NOT_USE_ARC    ADD_DEFINITIONS     ( -fobjc-arc )
     LINK_LIBRARIES      ( ${COCOA_LIBRARY} )
     LIST ( APPEND PKG_SOURCES macosx/macdnd.m )
   ELSE ( APPLE )