Temporary header file '/tmp/8GPsJU14rZ/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/final/fconfig.h" #include "/usr/include/final/final.h" // add namespaces namespace finalcut{typedef int tmp_add_type_1;} finalcut::tmp_add_type_1 tmp_add_func_1(){return 0;}; namespace finalcut{namespace flistboxhelper{typedef int tmp_add_type_2;}} finalcut::flistboxhelper::tmp_add_type_2 tmp_add_func_2(){return 0;}; namespace finalcut{namespace internal{typedef int tmp_add_type_3;}} finalcut::internal::tmp_add_type_3 tmp_add_func_3(){return 0;}; The GCC parameters: gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/8GPsJU14rZ/dump1.h" In file included from /usr/include/final/final.h:42, from /tmp/8GPsJU14rZ/dump1.h:13: /usr/include/final/input/fmouse.h:83:12: fatal error: gpm.h: No such file or directory 83 | #include | ^~~~~~~ compilation terminated.