Index: CMakeModules/nel.cmake
===================================================================
--- CMakeModules/nel.cmake	(revision 39)
+++ CMakeModules/nel.cmake	(working copy)
@@ -61,8 +61,17 @@
     SET(NL_RELEASE_CFLAGS "/Ox /Ob2 /Oi /Ot /Oy /GT /GL /GF")
     SET(NL_RELEASEDEBUG_CFLAGS "/DNL_RELEASE_DEBUG /Ob2 /GF")
   ELSE(WIN32)
-    SET(PLATFORM_CFLAGS "-ftemplate-depth-60 -D_REENTRANT -Wall -ansi -W -Wpointer-arith -Wsign-compare -Wno-deprecated-declarations -Wno-multichar -Wno-long-long -Wno-unused")
-    SET(PLATFORM_LINKFLAGS "${CMAKE_THREAD_LIBS_INIT} -lc -lm -lstdc++ -lrt")
+    SET(PLATFORM_CFLAGS "-D-ftemplate-depth-60 -D_REENTRANT -Wall -ansi -W -Wpointer-arith -Wsign-compare -Wno-deprecated-declarations -Wno-multichar -Wno-long-long -Wno-unused")
+    SET(PLATFORM_LINKFLAGS "${CMAKE_THREAD_LIBS_INIT} -lc -lm -lstdc++")
+    IF(APPLE)
+      IF(QT_MAC_USE_COCOA)
+        SET(PLATFORM_CFLAGS "-DNL_MAC_NATIVE")
+      ELSE(QT_MAC_USE_COCOA)
+        MESSAGE(FATAL_ERROR "only qt using cocoa supported, please update your qt version")
+      ENDIF(QT_MAC_USE_COCOA)
+    ELSE(APPLE)
+      SET(PLATFORM_LINKFLAGS "${PLATFORM_LINKFLAGS} -lrt")
+    ENDIF(APPLE)
     SET(NL_DEBUG_CFLAGS "-DNL_DEBUG -g")
     SET(NL_RELEASE_CFLAGS "-DNL_RELEASE -O6")
     SET(NL_RELEASEDEBUG_CFLAGS "-DNL_RELEASE_DEBUG -g -finline-functions -O3 ")