Temporary header file '/tmp/CsLFJn3tYT/dump1.h' with the following content will be compiled to create GCC translation unit dump:

  // add defines
  #define __STDC_VERSION__ 201710L
#define _TIME_BITS 64
#define _FILE_OFFSET_BITS 64
#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/dart/external/lodepng/lodepng.h"

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

  // add classes
  LodePNGColorMode* tmp_add_class_0;
  LodePNGColorProfile* tmp_add_class_1;
  LodePNGCompressSettings* tmp_add_class_2;
  LodePNGDecoderSettings* tmp_add_class_3;
  LodePNGDecompressSettings* tmp_add_class_4;
  LodePNGEncoderSettings* tmp_add_class_5;
  LodePNGInfo* tmp_add_class_6;
  LodePNGState* tmp_add_class_7;
  LodePNGTime* tmp_add_class_8;
  _G_fpos64_t* tmp_add_class_9;
  _G_fpos_t* tmp_add_class_10;
  _IO_cookie_io_functions_t* tmp_add_class_11;

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/CsLFJn3tYT/dump1.h"