diff --git a/CMakeLists.txt b/CMakeLists.txt
index b271664c35..347341efa0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -45,10 +45,11 @@ if (WIN32)
   # Caveats: http://stackoverflow.com/questions/2288728/drawbacks-of-using-largeaddressaware-for-32-bit-windows-executables
   # TODO: Remove when building 64-bit.
   set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} /LARGEADDRESSAWARE")
-elseif (CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_GNUCXX)
-  #SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wno-long-long -pedantic")
-  #SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wno-unknown-pragmas")
-  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -fno-strict-aliasing -Wno-unused-parameter -ggdb")
+else ()
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra -fno-strict-aliasing -Wno-unused-parameter")
+  if (CMAKE_COMPILER_IS_GNUCC OR CMAKE_COMPILER_IS_GNUCXX)
+      set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -ggdb")
+  endif ()
 endif(WIN32)
 
 if (NOT MSVC12)