Temporary header file '/tmp/yMrRdq2cAN/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/bullet/Bullet2FileLoader/autogenerated/bullet2.h"
  #include "/usr/include/bullet/Bullet2FileLoader/b3BulletFile.h"
  #include "/usr/include/bullet/Bullet2FileLoader/b3Chunk.h"
  #include "/usr/include/bullet/Bullet2FileLoader/b3Common.h"
  #include "/usr/include/bullet/Bullet2FileLoader/b3DNA.h"
  #include "/usr/include/bullet/Bullet2FileLoader/b3Defines.h"
  #include "/usr/include/bullet/Bullet2FileLoader/b3File.h"
  #include "/usr/include/bullet/Bullet2FileLoader/b3Serializer.h"
  #include "/usr/include/bullet/BulletFileLoader/autogenerated/bullet.h"
  #include "/usr/include/bullet/BulletFileLoader/bChunk.h"
  #include "/usr/include/bullet/BulletFileLoader/bCommon.h"
  #include "/usr/include/bullet/BulletFileLoader/bDNA.h"
  #include "/usr/include/bullet/BulletFileLoader/bDefines.h"
  #include "/usr/include/bullet/BulletFileLoader/bFile.h"
  #include "/usr/include/bullet/BulletFileLoader/btBulletFile.h"
  #include "/usr/include/bullet/BulletInverseDynamics/btBulletCollisionCommon.h"
  #include "/usr/include/bullet/BulletWorldImporter/btBulletWorldImporter.h"
  #include "/usr/include/bullet/BulletWorldImporter/btMultiBodyWorldImporter.h"
  #include "/usr/include/bullet/BulletWorldImporter/btWorldImporter.h"
  #include "/usr/include/bullet/BulletXmlWorldImporter/btBulletXmlWorldImporter.h"
  #include "/usr/include/bullet/BulletXmlWorldImporter/string_split.h"
  #include "/usr/include/bullet/ConvexDecomposition/ConvexBuilder.h"
  #include "/usr/include/bullet/ConvexDecomposition/ConvexDecomposition.h"
  #include "/usr/include/bullet/ConvexDecomposition/bestfit.h"
  #include "/usr/include/bullet/ConvexDecomposition/bestfitobb.h"
  #include "/usr/include/bullet/ConvexDecomposition/cd_hull.h"
  #include "/usr/include/bullet/ConvexDecomposition/cd_vector.h"
  #include "/usr/include/bullet/ConvexDecomposition/cd_wavefront.h"
  #include "/usr/include/bullet/ConvexDecomposition/concavity.h"
  #include "/usr/include/bullet/ConvexDecomposition/fitsphere.h"
  #include "/usr/include/bullet/ConvexDecomposition/float_math.h"
  #include "/usr/include/bullet/ConvexDecomposition/meshvolume.h"
  #include "/usr/include/bullet/ConvexDecomposition/planetri.h"
  #include "/usr/include/bullet/ConvexDecomposition/raytri.h"
  #include "/usr/include/bullet/ConvexDecomposition/splitplane.h"
  #include "/usr/include/bullet/ConvexDecomposition/vlookup.h"
  #include "/usr/include/bullet/GIMPACTUtils/btGImpactConvexDecompositionShape.h"
  #include "/usr/include/bullet/HACD/hacdCircularList.h"
  #include "/usr/include/bullet/HACD/hacdGraph.h"
  #include "/usr/include/bullet/HACD/hacdHACD.h"
  #include "/usr/include/bullet/HACD/hacdICHull.h"
  #include "/usr/include/bullet/HACD/hacdManifoldMesh.h"
  #include "/usr/include/bullet/HACD/hacdVector.h"
  #include "/usr/include/bullet/HACD/hacdVersion.h"
  #include "/usr/include/bullet/InverseDynamics/BulletInverseDynamicsUtilsCommon.h"

  // add namespaces
  namespace Bullet3SerializeBullet2{typedef int tmp_add_type_1;}
  Bullet3SerializeBullet2::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/yMrRdq2cAN/dump1.h"  -I/usr/include/bullet/BulletWorldImporter

In file included from /usr/include/bullet/Bullet2FileLoader/b3File.h:19,
                 from /usr/include/bullet/Bullet2FileLoader/b3BulletFile.h:19,
                 from /tmp/yMrRdq2cAN/dump1.h:13:
/usr/include/bullet/Bullet2FileLoader/b3Common.h:21:10: fatal error: Bullet3Common/b3AlignedObjectArray.h: No such file or directory
   21 | #include "Bullet3Common/b3AlignedObjectArray.h"
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.