Temporary header file '/tmp/T6KM1j0Y1Y/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 // add includes #include "/usr/include/stdint.h" #include "/usr/include/libnozzle.h" // add classes cmsghdr* tmp_add_class_0; ifaddr* tmp_add_class_1; ifconf* tmp_add_class_2; ifmap* tmp_add_class_3; ifreq* tmp_add_class_4; iovec* tmp_add_class_5; linger* tmp_add_class_6; mmsghdr* tmp_add_class_7; msghdr* tmp_add_class_8; nozzle_ip* tmp_add_class_9; osockaddr* tmp_add_class_10; sockaddr* tmp_add_class_11; sockaddr_storage* tmp_add_class_12; ucred* tmp_add_class_13; The GCC parameters: gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/T6KM1j0Y1Y/dump1.h"