From: Julian Ospald <hasufell@gentoo.org>
Date: Wed May 16 12:06:13 UTC 2012

respect CXXFLAGS

--- CMakeLists.txt
+++ CMakeLists.txt
@@ -209,24 +209,7 @@
 
 # CMAKE only defines "-g", but we need -DDEBUG also, and we need -DNOPARACHUTE (for SDL) in Debug
 set (CMAKE_CXX_FLAGS_DEBUG "-g -DDEBUG -DNOPARACHUTE${WL_COMPILERFLAG_OLDSTYLECAST}${WL_COMPILERFLAG_GENERICWARNINGS}${WL_COMPILERFLAG_EXTRAWARNINGS}${WL_COMPILERFLAG_STRICT}" CACHE STRING "Set by widelands CMakeLists.txt" FORCE)
-
-#This can be removed if no one uses gcc 4.5.1 or 4.5.2 any more
-IF (${CMAKE_COMPILER_IS_GNUCXX})
-EXEC_PROGRAM (
-    ${CMAKE_CXX_COMPILER}
-    ARGS --version
-    OUTPUT_VARIABLE WLBUILD_COMPILERVERSION
-    )
-    STRING(REGEX REPLACE ".*(4)\\.(5)\\.([0-9]).*" "\\1.\\2.\\3" WLBUILD_COMPILERVERSION_REP ${WLBUILD_COMPILERVERSION})
-    IF (WLBUILD_COMPILERVERSION_REP STREQUAL "4.5.1" OR WLBUILD_COMPILERVERSION_REP STREQUAL "4.5.2")
-        message("Detected gcc ${WLBUILD_COMPILERVERSION_REP}")
-        message("Suffering from gcc bug, disabling -O3")
-        set (CMAKE_CXX_FLAGS_RELEASE "-O2 -DNDEBUG" CACHE STRING "Set by widelands CMakeLists.txt" FORCE)
-    ELSE (WLBUILD_COMPILERVERSION_REP STREQUAL "4.5.1" OR WLBUILD_COMPILERVERSION_REP STREQUAL "4.5.2")
-        #This line is the default and should be preserved.
-        set (CMAKE_CXX_FLAGS_RELEASE "-O3 -DNDEBUG" CACHE STRING "Set by widelands CMakeLists.txt" FORCE)
-    ENDIF (WLBUILD_COMPILERVERSION_REP STREQUAL "4.5.1" OR WLBUILD_COMPILERVERSION_REP STREQUAL "4.5.2")
-ENDIF (${CMAKE_COMPILER_IS_GNUCXX})
+set (CMAKE_CXX_FLAGS_RELEASE "-DNDEBUG" CACHE STRING "Release compiler flags" FORCE)
 
 #If building with MSVC, then check for 3rdparty libs
 if (DEFINED MSVC)