compiling for CentOS support

Change-Id: I0c01b4f34ac3701b5cea324e2e2a34835163aee0

cmake_modules/env.cmake

@@ -51,6 +51,7 @@ set ( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fmerge-all-constants" )
 set ( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fms-extensions" )
 set ( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fmerge-all-constants" )
 set ( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Werror=unused-result" )
+#set ( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Werror=int-in-bool-context" )
 set ( CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fPIC" )
 
 set ( CMAKE_SHARED_LINKER_FLAGS "-Wl,-Bdynamic -Wl,-z,noexecstack" )