Temporary header file '/tmp/_jko0oDYqH/dump1.h' with the following content will be compiled to create GCC translation unit dump: // add defines #define __STDC_VERSION__ 201710L #define _FILE_OFFSET_BITS 64 #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/libsocketcan.h" // add classes can_berr_counter* tmp_add_class_0; can_bittiming* tmp_add_class_1; can_bittiming_const* tmp_add_class_2; can_clock* tmp_add_class_3; can_ctrlmode* tmp_add_class_4; can_device_stats* tmp_add_class_5; The GCC parameters: gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/_jko0oDYqH/dump1.h"