Temporary header file '/tmp/RNlsXxK1lV/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/nut-scan.h" #include "/usr/include/nutscan-device.h" #include "/usr/include/nutscan-init.h" #include "/usr/include/nutscan-ip.h" The GCC parameters: gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/RNlsXxK1lV/dump1.h" In file included from /tmp/RNlsXxK1lV/dump1.h:11: /usr/include/nut-scan.h:34:10: fatal error: config.h: No such file or directory 34 | #include "config.h" | ^~~~~~~~~~ compilation terminated.