Temporary header file '/tmp/58N_8SpxOV/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/openvdb_ax/Exceptions.h"
  #include "/usr/include/openvdb_ax/ast/AST.h"
  #include "/usr/include/openvdb_ax/ast/Parse.h"
  #include "/usr/include/openvdb_ax/ast/PrintTree.h"
  #include "/usr/include/openvdb_ax/ast/Scanners.h"
  #include "/usr/include/openvdb_ax/ast/Tokens.h"
  #include "/usr/include/openvdb_ax/ast/Visitor.h"
  #include "/usr/include/openvdb_ax/ax.h"
  #include "/usr/include/openvdb_ax/codegen/Codecs.h"
  #include "/usr/include/openvdb_ax/codegen/ComputeGenerator.h"
  #include "/usr/include/openvdb_ax/codegen/ConstantFolding.h"
  #include "/usr/include/openvdb_ax/codegen/FunctionRegistry.h"
  #include "/usr/include/openvdb_ax/codegen/FunctionTypes.h"
  #include "/usr/include/openvdb_ax/codegen/Functions.h"
  #include "/usr/include/openvdb_ax/codegen/OpenSimplexNoise.h"
  #include "/usr/include/openvdb_ax/codegen/PointComputeGenerator.h"
  #include "/usr/include/openvdb_ax/codegen/PointLeafLocalData.h"
  #include "/usr/include/openvdb_ax/codegen/String.h"
  #include "/usr/include/openvdb_ax/codegen/SymbolTable.h"
  #include "/usr/include/openvdb_ax/codegen/Types.h"
  #include "/usr/include/openvdb_ax/codegen/Utils.h"
  #include "/usr/include/openvdb_ax/codegen/VolumeComputeGenerator.h"
  #include "/usr/include/openvdb_ax/compiler/AttributeBindings.h"
  #include "/usr/include/openvdb_ax/compiler/AttributeRegistry.h"
  #include "/usr/include/openvdb_ax/compiler/Compiler.h"
  #include "/usr/include/openvdb_ax/compiler/CompilerOptions.h"
  #include "/usr/include/openvdb_ax/compiler/CustomData.h"
  #include "/usr/include/openvdb_ax/compiler/Logger.h"
  #include "/usr/include/openvdb_ax/compiler/PointExecutable.h"
  #include "/usr/include/openvdb_ax/compiler/VolumeExecutable.h"

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/58N_8SpxOV/dump1.h"

In file included from /tmp/58N_8SpxOV/dump1.h:12:
/usr/include/openvdb_ax/Exceptions.h:14:10: fatal error: openvdb/version.h: No such file or directory
   14 | #include <openvdb/version.h>
      |          ^~~~~~~~~~~~~~~~~~~
compilation terminated.