--- CMakeLists.txt.orig	2017-02-14 16:19:11 UTC
+++ CMakeLists.txt
@@ -11,19 +11,9 @@ project(squirrel C CXX)
 
 include_directories(${CMAKE_SOURCE_DIR}/include)
 
-if(CMAKE_COMPILER_IS_GNUCXX)
+if(CMAKE_CXX_COMPILER_ID MATCHES GNU OR CMAKE_CXX_COMPILER_ID MATCHES Clang)
   set(SQ_FLAGS -fno-exceptions -fno-strict-aliasing -Wall -Wextra -pedantic -Wcast-qual)
 
-  if(CMAKE_BUILD_TYPE STREQUAL "Release")
-    set(SQ_FLAGS ${SQ_FLAGS} -O3)
-  elseif(CMAKE_BUILD_TYPE STREQUAL "RelWithDebInfo")
-    set(SQ_FLAGS ${SQ_FLAGS} -O3 -g)
-  elseif(CMAKE_BUILD_TYPE STREQUAL "MinSizeRel")
-    set(SQ_FLAGS ${SQ_FLAGS} -Os)
-  elseif(CMAKE_BUILD_TYPE STREQUAL "Debug")
-    set(SQ_FLAGS ${SQ_FLAGS} -pg -pie -gstabs -g3 -Og)
-  endif()
-
   if(CMAKE_VERSION VERSION_GREATER 3)
     add_compile_options(${SQ_FLAGS})
   else()