Temporary header file '/tmp/jiPPpzxUiW/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/dsdcc/crc.h"
  #include "/usr/include/dsdcc/descramble.h"
  #include "/usr/include/dsdcc/dmr.h"
  #include "/usr/include/dsdcc/doublebuffer.h"
  #include "/usr/include/dsdcc/dpmr.h"
  #include "/usr/include/dsdcc/dsd_decoder.h"
  #include "/usr/include/dsdcc/dsd_filters.h"
  #include "/usr/include/dsdcc/dsd_logger.h"
  #include "/usr/include/dsdcc/dsd_mbe.h"
  #include "/usr/include/dsdcc/dsd_opts.h"
  #include "/usr/include/dsdcc/dsd_state.h"
  #include "/usr/include/dsdcc/dsd_symbol.h"
  #include "/usr/include/dsdcc/dsd_sync.h"
  #include "/usr/include/dsdcc/dsd_upsample.h"
  #include "/usr/include/dsdcc/dstar.h"
  #include "/usr/include/dsdcc/export.h"
  #include "/usr/include/dsdcc/fec.h"
  #include "/usr/include/dsdcc/iirfilter.h"
  #include "/usr/include/dsdcc/locator.h"
  #include "/usr/include/dsdcc/mbefec.h"
  #include "/usr/include/dsdcc/nxdn.h"
  #include "/usr/include/dsdcc/nxdnconvolution.h"
  #include "/usr/include/dsdcc/nxdncrc.h"
  #include "/usr/include/dsdcc/nxdnmessage.h"
  #include "/usr/include/dsdcc/p25p1_heuristics.h"
  #include "/usr/include/dsdcc/phaselock.h"
  #include "/usr/include/dsdcc/pn.h"
  #include "/usr/include/dsdcc/runningmaxmin.h"
  #include "/usr/include/dsdcc/timeutil.h"
  #include "/usr/include/dsdcc/viterbi.h"
  #include "/usr/include/dsdcc/viterbi3.h"
  #include "/usr/include/dsdcc/viterbi5.h"
  #include "/usr/include/dsdcc/ysf.h"

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

  // add classes
  _G_fpos64_t* tmp_add_class_0;
  _G_fpos_t* tmp_add_class_1;
  _IO_cookie_io_functions_t* tmp_add_class_2;

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

In file included from /tmp/jiPPpzxUiW/dump1.h:37:
/usr/include/dsdcc/phaselock.h:27:17: error: redefinition of ‘class DSDcc::PhaseLock’
   27 | class DSDCC_API PhaseLock
      |                 ^~~~~~~~~
In file included from /usr/include/dsdcc/dsd_symbol.h:23,
                 from /usr/include/dsdcc/dsd_decoder.h:23,
                 from /tmp/jiPPpzxUiW/dump1.h:17:
/usr/include/dsdcc/phaselock.h:27:17: note: previous definition of ‘class DSDcc::PhaseLock’
   27 | class DSDCC_API PhaseLock
      |                 ^~~~~~~~~
/usr/include/dsdcc/phaselock.h:97:17: error: redefinition of ‘class DSDcc::SimplePhaseLock’
   97 | class DSDCC_API SimplePhaseLock : public PhaseLock
      |                 ^~~~~~~~~~~~~~~
/usr/include/dsdcc/phaselock.h:97:17: note: previous definition of ‘class DSDcc::SimplePhaseLock’
   97 | class DSDCC_API SimplePhaseLock : public PhaseLock
      |                 ^~~~~~~~~~~~~~~