gentoo-overlay/games-arcade/supertux/files/supertux-0.4.0-flags.patch

--- CMakeLists.txt.orig
+++ CMakeLists.txt
@@ -329,7 +329,7 @@
 endif(COMPILER_SUPPORTS_CXX11)
 
 
-IF(CMAKE_COMPILER_IS_GNUCC)
+IF(CMAKE_COMPILER_IS_GNUCC_NOTOUCHING_FLAGS)
   SET(CMAKE_CXX_FLAGS_DEBUG "-O0 -g" CACHE STRING "Debug flags")
   SET(CMAKE_C_FLAGS_DEBUG "-O0 -g" CACHE STRING "Debug flags")
   SET(CMAKE_CXX_FLAGS_PROFILE "-pg" CACHE STRING "Profile flags")
@@ -352,7 +352,7 @@
     #   -Wlogical-op -Wstrict-null-sentinel
     SET(SUPERTUX2_EXTRA_WARNING_FLAGS "-fdiagnostics-show-option -pedantic -Wno-long-long -Wcast-align -Wdisabled-optimization -Winit-self -Winvalid-pch -Wmissing-include-dirs -Wmissing-noreturn -Wpacked -Wredundant-decls -Wstack-protector -Wformat=2 -Weffc++ -Wctor-dtor-privacy  -Wno-unused-parameter -Wshadow -Wnon-virtual-dtor -Wcast-qual")
   ENDIF(WARNINGS)
-ENDIF(CMAKE_COMPILER_IS_GNUCC)
+ENDIF(CMAKE_COMPILER_IS_GNUCC_NOTOUCHING_FLAGS)
 
 ## If xgettext is available, generate messages.pot for sources
 
@@ -407,9 +407,9 @@
 ENDIF(GENERATE_MESSAGESPOT)
 
 ## Some additional compiler switches
-IF(CMAKE_COMPILER_IS_GNUCC)
+IF(CMAKE_COMPILER_IS_GNUCC_NOTOUCHING_FLAGS)
   SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-strict-aliasing")
-ENDIF(CMAKE_COMPILER_IS_GNUCC)
+ENDIF(CMAKE_COMPILER_IS_GNUCC_NOTOUCHING_FLAGS)
 
 IF(${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
   ADD_DEFINITIONS(-DMACOSX)