Temporary header file '/tmp/MkHLCMAwWJ/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/snapper/AsciiFile.h"
  #include "/usr/include/snapper/Comparison.h"
  #include "/usr/include/snapper/Exception.h"
  #include "/usr/include/snapper/File.h"
  #include "/usr/include/snapper/Logger.h"
  #include "/usr/include/snapper/Snapper.h"
  #include "/usr/include/snapper/Snapshot.h"
  #include "/usr/include/snapper/Version.h"

  // add namespaces
  namespace snapper{typedef int tmp_add_type_1;}
  snapper::tmp_add_type_1 tmp_add_func_1(){return 0;};

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/MkHLCMAwWJ/dump1.h"

In file included from /usr/include/snapper/Comparison.h:29,
                 from /tmp/MkHLCMAwWJ/dump1.h:13:
/usr/include/snapper/Snapper.h:29:10: fatal error: boost/noncopyable.hpp: No such file or directory
   29 | #include <boost/noncopyable.hpp>
      |          ^~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.