Temporary header file '/tmp/vKjyV_WK6c/dump1.h' with the following content will be compiled to create GCC translation unit dump: // add defines #define __STDC_VERSION__ 201710L #define _GXX_NULLPTR_T #define CLUTTER_ENABLE_COMPOSITOR_API 1 #define _REGEX_NELTS(n) #define _Atomic #define PACKED #define getaddrinfo_a(a,b,c,d) // add includes #include "/usr/include/nvtt/nvtt.h" // add namespaces namespace nvtt{typedef int tmp_add_type_1;} nvtt::tmp_add_type_1 tmp_add_func_1(){return 0;}; The GCC parameters: gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/vKjyV_WK6c/dump1.h"