Temporary header file '/tmp/JizteiK4EO/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/arm-linux-gnueabihf/qt6/QtSerialPort/qserialport.h"
  #include "/usr/include/arm-linux-gnueabihf/qt6/QtSerialPort/qserialportglobal.h"
  #include "/usr/include/arm-linux-gnueabihf/qt6/QtSerialPort/qserialportinfo.h"
  #include "/usr/include/arm-linux-gnueabihf/qt6/QtSerialPort/qtserialport-config.h"
  #include "/usr/include/arm-linux-gnueabihf/qt6/QtSerialPort/qtserialportexports.h"
  #include "/usr/include/arm-linux-gnueabihf/qt6/QtSerialPort/qtserialportversion.h"

  // add namespaces
  namespace QAlgorithmsPrivate{typedef int tmp_add_type_1;}
  QAlgorithmsPrivate::tmp_add_type_1 tmp_add_func_1(){return 0;};
  namespace QContainerInfo{typedef int tmp_add_type_2;}
  QContainerInfo::tmp_add_type_2 tmp_add_func_2(){return 0;};
  namespace QHashPrivate{typedef int tmp_add_type_3;}
  QHashPrivate::tmp_add_type_3 tmp_add_func_3(){return 0;};
  namespace Qt{typedef int tmp_add_type_4;}
  Qt::tmp_add_type_4 tmp_add_func_4(){return 0;};
  namespace Qt{namespace Literals{typedef int tmp_add_type_5;}}
  Qt::Literals::tmp_add_type_5 tmp_add_func_5(){return 0;};
  namespace Qt{namespace Literals{namespace StringLiterals{typedef int tmp_add_type_6;}}}
  Qt::Literals::StringLiterals::tmp_add_type_6 tmp_add_func_6(){return 0;};
  namespace QtGlobalStatic{typedef int tmp_add_type_7;}
  QtGlobalStatic::tmp_add_type_7 tmp_add_func_7(){return 0;};
  namespace QtLiterals{typedef int tmp_add_type_8;}
  QtLiterals::tmp_add_type_8 tmp_add_func_8(){return 0;};
  namespace QtMetaContainerPrivate{typedef int tmp_add_type_9;}
  QtMetaContainerPrivate::tmp_add_type_9 tmp_add_func_9(){return 0;};
  namespace QtMetaTypePrivate{typedef int tmp_add_type_10;}
  QtMetaTypePrivate::tmp_add_type_10 tmp_add_func_10(){return 0;};
  namespace QtPrivate{typedef int tmp_add_type_11;}
  QtPrivate::tmp_add_type_11 tmp_add_func_11(){return 0;};
  namespace QtPrivate{namespace detail{typedef int tmp_add_type_12;}}
  QtPrivate::detail::tmp_add_type_12 tmp_add_func_12(){return 0;};
  namespace QtPrivate{namespace SwapExceptionTester{typedef int tmp_add_type_13;}}
  QtPrivate::SwapExceptionTester::tmp_add_type_13 tmp_add_func_13(){return 0;};
  namespace QtPrivate{namespace Tok{typedef int tmp_add_type_14;}}
  QtPrivate::Tok::tmp_add_type_14 tmp_add_func_14(){return 0;};
  namespace QTypeTraits{typedef int tmp_add_type_15;}
  QTypeTraits::tmp_add_type_15 tmp_add_func_15(){return 0;};
  namespace QTypeTraits{namespace detail{typedef int tmp_add_type_16;}}
  QTypeTraits::detail::tmp_add_type_16 tmp_add_func_16(){return 0;};
  namespace q_has_char8_t{typedef int tmp_add_type_17;}
  q_has_char8_t::tmp_add_type_17 tmp_add_func_17(){return 0;};
  namespace q_no_char8_t{typedef int tmp_add_type_18;}
  q_no_char8_t::tmp_add_type_18 tmp_add_func_18(){return 0;};

  // add classes
  QAnyStringView* tmp_add_class_0;
  QArrayData* tmp_add_class_1;
  QAtomicInt* tmp_add_class_2;
  QBindingStatus* tmp_add_class_3;
  QBindingStorage* tmp_add_class_4;
  QByteArray* tmp_add_class_5;
  QByteArrayView* tmp_add_class_6;
  QChar* tmp_add_class_7;
  QDataStream* tmp_add_class_8;
  QFlag* tmp_add_class_9;
  QGenericArgument* tmp_add_class_10;
  QGenericReturnArgument* tmp_add_class_11;
  QHashSeed* tmp_add_class_12;
  QIODevice* tmp_add_class_13;
  QIODeviceBase* tmp_add_class_14;
  QIncompatibleFlag* tmp_add_class_15;
  QInternal* tmp_add_class_16;
  QKeyCombination* tmp_add_class_17;
  QLatin1Char* tmp_add_class_18;
  QLatin1String* tmp_add_class_19;
  QMessageLogContext* tmp_add_class_20;
  QMessageLogger* tmp_add_class_21;
  QMetaAssociation* tmp_add_class_22;
  QMetaContainer* tmp_add_class_23;
  QMetaObject* tmp_add_class_24;
  QMetaSequence* tmp_add_class_25;
  QMetaType* tmp_add_class_26;
  QMethodRawArguments* tmp_add_class_27;
  QObject* tmp_add_class_28;
  QObjectData* tmp_add_class_29;
  QPartialOrdering* tmp_add_class_30;
  QScopedPointerPodDeleter* tmp_add_class_31;
  QSerialPort* tmp_add_class_32;
  QSerialPortInfo* tmp_add_class_33;
  QSignalBlocker* tmp_add_class_34;
  QString* tmp_add_class_35;
  QStringMatcher* tmp_add_class_36;
  QStringTokenizerBaseBase* tmp_add_class_37;
  QStringView* tmp_add_class_38;
  QSysInfo* tmp_add_class_39;
  _G_fpos64_t* tmp_add_class_40;
  _G_fpos_t* tmp_add_class_41;
  _IO_cookie_io_functions_t* tmp_add_class_42;

The GCC parameters:
  gcc -fdump-lang-raw -fkeep-inline-functions -c -x c++ -fpermissive -w "/tmp/JizteiK4EO/dump1.h"  -I/usr/include/arm-linux-gnueabihf/qt6