Temporary header file '/tmp/z2ggqSFYze/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/mapcache/cJSON.h"
  #include "/usr/include/mapcache/errors.h"
  #include "/usr/include/mapcache/ezxml.h"
  #include "/usr/include/mapcache/mapcache-cgi-config.h"
  #include "/usr/include/mapcache/mapcache-config.h"
  #include "/usr/include/mapcache/mapcache-util-config.h"
  #include "/usr/include/mapcache/mapcache-version.h"
  #include "/usr/include/mapcache/mapcache.h"
  #include "/usr/include/mapcache/mapcache_services.h"
  #include "/usr/include/mapcache/mod_mapcache-config.h"
  #include "/usr/include/mapcache/util.h"

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/z2ggqSFYze/dump1.h"

In file included from /tmp/z2ggqSFYze/dump1.h:19:
/usr/include/mapcache/mapcache.h:39:10: fatal error: apr_tables.h: No such file or directory
   39 | #include <apr_tables.h>
      |          ^~~~~~~~~~~~~~
compilation terminated.