diff --git a/config/gcc.cmake b/config/gcc.cmake
index 2d7b08df..92d13423 100644
--- a/config/gcc.cmake
+++ b/config/gcc.cmake
@@ -3,4 +3,6 @@ set(CMAKE_C_COMPILER "gcc" CACHE STRING "" FORCE)
 set(CMAKE_CXX_COMPILER "g++" CACHE STRING "" FORCE)
 set(CMAKE_C_FLAGS_DEBUG "-g -O0 -Wall  -Wformat -Werror=format-security")
 set(CMAKE_C_FLAGS_RELEASE "-O2 -Wno-unknown-pragmas ")
+set(CMAKE_CXX_FLAGS_DEBUG "-g -O0 -Wall  -Wformat -Werror=format-security")
+set(CMAKE_CXX_FLAGS_RELEASE "-O2 -Wno-unknown-pragmas ")
 set(CMAKE_Fortran_COMPILER "gfortran" CACHE STRING "" FORCE)