Temporary header file '/tmp/BdJN7ytT7W/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/bs2b/bs2b.h" #include "/usr/include/bs2b/bs2bclass.h" #include "/usr/include/bs2b/bs2btypes.h" #include "/usr/include/bs2b/bs2bversion.h" // add classes bs2b_base* tmp_add_class_0; The GCC parameters: gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/BdJN7ytT7W/dump1.h"