Temporary header file '/tmp/KgvLzMG6Yf/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/flam3.h"
  #include "/usr/include/isaac.h"
  #include "/usr/include/isaacs.h"

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/KgvLzMG6Yf/dump1.h"

In file included from /tmp/KgvLzMG6Yf/dump1.h:12:
/usr/include/flam3.h:27:14: fatal error: libxml/parser.h: No such file or directory
   27 |     #include <libxml/parser.h>
      |              ^~~~~~~~~~~~~~~~~
compilation terminated.