Temporary header file '/tmp/jseLwP0w5S/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/libnest2d/backends/clipper/clipper_polygon.hpp"
  #include "/usr/include/libnest2d/backends/clipper/geometries.hpp"
  #include "/usr/include/libnest2d/common.hpp"
  #include "/usr/include/libnest2d/geometry_traits.hpp"
  #include "/usr/include/libnest2d/geometry_traits_nfp.hpp"
  #include "/usr/include/libnest2d/libnest2d.hpp"
  #include "/usr/include/libnest2d/nester.hpp"
  #include "/usr/include/libnest2d/optimizer.hpp"
  #include "/usr/include/libnest2d/optimizers/nlopt/genetic.hpp"
  #include "/usr/include/libnest2d/optimizers/nlopt/nlopt_boilerplate.hpp"
  #include "/usr/include/libnest2d/optimizers/nlopt/simplex.hpp"
  #include "/usr/include/libnest2d/optimizers/nlopt/subplex.hpp"
  #include "/usr/include/libnest2d/parallel.hpp"
  #include "/usr/include/libnest2d/placers/bottomleftplacer.hpp"
  #include "/usr/include/libnest2d/placers/nfpplacer.hpp"
  #include "/usr/include/libnest2d/placers/placer_boilerplate.hpp"
  #include "/usr/include/libnest2d/selections/djd_heuristic.hpp"
  #include "/usr/include/libnest2d/selections/filler.hpp"
  #include "/usr/include/libnest2d/selections/firstfit.hpp"
  #include "/usr/include/libnest2d/selections/selection_boilerplate.hpp"
  #include "/usr/include/libnest2d/utils/bigint.hpp"
  #include "/usr/include/libnest2d/utils/boost_alg.hpp"
  #include "/usr/include/libnest2d/utils/metaloop.hpp"
  #include "/usr/include/libnest2d/utils/rational.hpp"
  #include "/usr/include/libnest2d/utils/rotcalipers.hpp"
  #include "/usr/include/libnest2d/utils/rotfinder.hpp"

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/jseLwP0w5S/dump1.h"

In file included from /tmp/jseLwP0w5S/dump1.h:12:
/usr/include/libnest2d/backends/clipper/clipper_polygon.hpp:4:10: fatal error: polyclipping/clipper.hpp: No such file or directory
    4 | #include <polyclipping/clipper.hpp>
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.