Temporary header file '/tmp/w04fUeYmgb/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 #ifdef __cplusplus // C17 compat layer #define _Alignof(type) alignof(type) #endif #define getaddrinfo_a(a,b,c,d) typedef float _Float32; typedef long double _Float64; typedef double _Float32x; // add includes #include "/usr/include/newt.h" #include "/usr/include/cdebconf/cdebconf_gtk.h" #include "/usr/include/cdebconf/cdebconf_newt.h" #include "/usr/include/cdebconf/cdebconf_text.h" #include "/usr/include/cdebconf/constants.h" #include "/usr/include/cdebconf/debconfclient.h" #include "/usr/include/cdebconf/frontend.h" #include "/usr/include/cdebconf/question.h" #include "/usr/include/cdebconf/strutl.h" #include "/usr/include/cdebconf/template.h" The GCC parameters: gcc -fdump-lang-raw -fkeep-inline-functions -c -U__cplusplus -D_Bool="bool" -fpreprocessed -x c++ -fpermissive -w "/tmp/w04fUeYmgb/dump1.i" -I/usr/include/pango-1.0 -I/usr/include/harfbuzz -I/usr/include/gtk-3.0 -I/usr/include/glib-2.0 -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/cairo -I/usr/include/atk-1.0 -I/lib/arm-linux-gnueabihf/glib-2.0/include