--- a/cmake/FixupCompilerFlags.cmake
+++ b/cmake/FixupCompilerFlags.cmake
@@ -45,14 +45,6 @@
     SET(CMAKE_CXX_FLAGS "-Wall ${CMAKE_CXX_FLAGS}")
     #SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wshorten-64-to-32")
 
-    SET(CMAKE_C_FLAGS_DEBUG "-Og -fstack-protector-strong -fno-omit-frame-pointer ${CMAKE_C_FLAGS_DEBUG}")
-    SET(CMAKE_CXX_FLAGS_DEBUG "-Og -fstack-protector-strong -fno-omit-frame-pointer ${CMAKE_CXX_FLAGS_DEBUG}")
-    SET(CMAKE_C_FLAGS_RELEASE "-g ${CMAKE_C_FLAGS_RELEASE}")
-    SET(CMAKE_CXX_FLAGS_RELEASE "-g ${CMAKE_CXX_FLAGS_RELEASE}")
-    # left to right match, so append -O3
-    SET(CMAKE_C_FLAGS_RELWITHDEBINFO "${CMAKE_C_FLAGS_RELWITHDEBINFO} -O3")
-    SET(CMAKE_C_FLAGS_RELWITHDEBINFO "${CMAKE_CXX_FLAGS_RELWITHDEBINFO} -O3")
-
     # for some reason static library doesn't have this
     # on x86_64 and is required.
     # Solaris GCC (32 bit) doesn't have this either. so