$ CC=clang CXX=clang++ CFLAGS="-march=native -mtune=native" CXXFLAGS="-march=native -mtune=native" ../qt-everywhere-src-6.4.2/configure -prefix ${HOME}/clang-en
v -headerdir ${HOME}/clang-env//include/qt6 -release -shared -submodules qtbase
+ mkdir -p qtbase
+ cd qtbase
+ exec /home/user/libs-dev/qt-everywhere-src-6.4.2/qtbase/configure -top-level -prefix /home/user/clang-env -headerdir /home/user/clang-env//include/qt6 -release -
shared -submodules qtbase
CMake Warning (dev) at /home/user/libs-dev/qt-everywhere-src-6.4.2/qtbase/cmake/QtBuildInformation.cmake:257 (set):
  Cannot set "__qt_configure_reports": current scope has no parent.
Call Stack (most recent call first):
  /home/user/libs-dev/qt-everywhere-src-6.4.2/qtsensors/src/sensors/configure.cmake:45 (qt_configure_add_report)
  /home/user/libs-dev/qt-everywhere-src-6.4.2/qtbase/cmake/QtProcessConfigureArgs.cmake:242 (include)
This warning is for project developers.  Use -Wno-dev to suppress it.'/usr/bin/cmake' '-DQT_BUILD_SUBMODULES=qtbase' '-DBUILD_SHARED_LIBS=ON' '-DCMAKE_INSTALL_PREFIX=/home/user/clang-env' '-DINSTALL_INCLUDEDIR=/home/user/clang-env/
include/qt6' '-DCMAKE_BUILD_TYPE=Release' '-G' 'Ninja' '/home/user/libs-dev/qt-everywhere-src-6.4.2'
-- The CXX compiler identification is Clang 15.0.7
-- The C compiler identification is Clang 15.0.7
-- The ASM compiler identification is Clang with GNU-like command-line
-- Found assembler: /home/user/clang-env/bin/clang
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /home/user/clang-env/bin/clang++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /home/user/clang-env/bin/clang - skipped
-- Detecting C compile features
-- Detecting C compile features - done
Checking dependencies of submodule 'qtbase'
Configuring submodule 'qtbase'
CMake Warning (dev) at qtbase/cmake/3rdparty/extra-cmake-modules/find-modules/FindXCB.cmake:180 (message):
  XINPUT from XCB was requested: this is EXPERIMENTAL and is likely to
  unavailable on many systems!
Call Stack (most recent call first):
  qtbase/cmake/QtFindPackageHelpers.cmake:130 (find_package)
  qtbase/src/gui/configure.cmake:123 (qt_find_package)
  qtbase/cmake/QtFeature.cmake:573 (include)
  qtbase/src/CMakeLists.txt:12 (qt_feature_evaluate_features)
This warning is for project developers.  Use -Wno-dev to suppress it.CMake Warning (dev) at qtbase/cmake/3rdparty/extra-cmake-modules/find-modules/FindXCB.cmake:180 (message):
  XINPUT from XCB was requested: this is EXPERIMENTAL and is likely to
  unavailable on many systems!
Call Stack (most recent call first):
  qtbase/cmake/QtFindPackageHelpers.cmake:130 (find_package)
  qtbase/src/gui/configure.cmake:123 (qt_find_package)
  qtbase/cmake/QtModuleHelpers.cmake:612 (include)
  qtbase/src/gui/CMakeLists.txt:53 (qt_internal_add_module)
This warning is for project developers.  Use -Wno-dev to suppress it.
-- Configuration summary shown below. It has also been written to /home/user/libs-dev/qt-build/config.summary
-- Configure with --log-level=STATUS or higher to increase CMake's message verbosity. The log level does not persist across reconfigurations.-- Configure summary:Building for: linux-clang (x86_64, CPU features: mmx sse sse2)
Compiler: clang 15.0.7
Build options:
  Mode ................................... release
  Optimize release build for size ........ no
  Fully optimize release builds (-O3) .... no
  Building shared libraries .............. yes
  Using C standard ....................... C11
  Using C++ standard ..................... C++17
  Using ccache ........................... no
  Using new DTAGS ........................ yes
  Relocatable ............................ yes
  Using precompiled headers .............. yes
  Using LTCG ............................. no
  Using Intel CET ........................ no
  Target compiler supports:
    SSE .................................. SSE2 SSE3 SSSE3 SSE4.1 SSE4.2
    AVX .................................. AVX AVX2 VAES
    AVX512 ............................... F ER CD PF DQ BW VL IFMA VBMI AVX512VBMI2
    Other x86 ............................ AES F16C RDRAND SHA
  Sanitizers:
    Addresses ............................ no
    Threads .............................. no
    Memory ............................... no
    Fuzzer (instrumentation only) ........ no
    Undefined ............................ no
  Build parts ............................ libs tools
Qt modules and options:
  Qt Concurrent .......................... yes
  Qt D-Bus ............................... yes
  Qt D-Bus directly linked to libdbus .... yes
  Qt Gui ................................. yes
  Qt Network ............................. yes
  Qt PrintSupport ........................ yes
  Qt Sql ................................. yes
  Qt Testlib ............................. yes
  Qt Widgets ............................. yes
  Qt Xml ................................. yes
Support enabled for:
  Using pkg-config ....................... yes
  udev ................................... yes
  Using system zlib ...................... yes
  Zstandard support ...................... yes
  Thread support ......................... yes
Common build options:
  Linker can resolve circular dependencies  yes
Qt Core:
  backtrace .............................. yes
  DoubleConversion ....................... yes
    Using system DoubleConversion ........ yes
  GLib ................................... yes
  ICU .................................... yes
  Using system libb2 ..................... yes
  Built-in copy of the MIME database ..... yes
  cpp/winrt base ......................... no
  Tracing backend ........................ <none>
  Logging backends:
    journald ............................. no
    syslog ............................... no
    slog2 ................................ no
  PCRE2 .................................. yes
    Using system PCRE2 ................... yes
  CLONE_PIDFD support in forkfd .......... yes
Qt Sql:
  SQL item models ........................ yes
Qt Network:
  getifaddrs() ........................... yes
  IPv6 ifname ............................ yes
  libproxy ............................... no
  Linux AF_NETLINK ....................... yes
  OpenSSL ................................ yes
    Qt directly linked to OpenSSL ........ no
  OpenSSL 1.1 ............................ yes
  DTLS ................................... yes
  OCSP-stapling .......................... yes
  SCTP ................................... no
  Use system proxies ..................... yes
  GSSAPI ................................. yes
  Brotli Decompression Support ........... yes
  qTopLevelDomain() ...................... yes
    Built-in publicsuffix database ....... yes
    System publicsuffix database ......... yes
Core tools:
  Android deployment tool ................ yes
  macOS deployment tool .................. no
  Windows deployment tool ................ no
  qmake .................................. yes
Qt Gui:
  Accessibility .......................... yes
  FreeType ............................... yes
    Using system FreeType ................ yes
  HarfBuzz ............................... yes
    Using system HarfBuzz ................ yes
  Fontconfig ............................. yes
  Image formats:
    GIF .................................. yes
    ICO .................................. yes
    JPEG ................................. yes
      Using system libjpeg ............... yes
    PNG .................................. yes
      Using system libpng ................ yes
  Text formats:
    HtmlParser ........................... yes
    CssParser ............................ yes
    OdfWriter ............................ yes
    MarkdownReader ....................... yes
      Using system libmd4c ............... yes
    MarkdownWriter ....................... yes
  EGL .................................... yes
  OpenVG ................................. no
  OpenGL:
    Desktop OpenGL ....................... yes
    OpenGL ES 2.0 ........................ no
    OpenGL ES 3.0 ........................ no
    OpenGL ES 3.1 ........................ no
    OpenGL ES 3.2 ........................ no
  Vulkan ................................. yes
  Session Management ..................... yes
Features used by QPA backends:
  evdev .................................. yes
  libinput ............................... yes
  HiRes wheel support in libinput ........ yes
  INTEGRITY HID .......................... no
  mtdev .................................. yes
  tslib .................................. yes
  xkbcommon .............................. yes
  X11 specific:
    XLib ................................. yes
    XCB Xlib ............................. yes
    EGL on X11 ........................... yes
    xkbcommon-x11 ........................ yes
    xcb-sm ............................... yes
QPA backends:
  DirectFB ............................... no
  EGLFS .................................. yes
  EGLFS details:
    EGLFS OpenWFD ........................ no
    EGLFS i.Mx6 .......................... no
    EGLFS i.Mx6 Wayland .................. no
    EGLFS RCAR ........................... no
    EGLFS EGLDevice ...................... yes
    EGLFS GBM ............................ yes
    EGLFS VSP2 ........................... no
    EGLFS Mali ........................... no
    EGLFS Raspberry Pi ................... no
    EGLFS X11 ............................ yes
  LinuxFB ................................ yes
  VNC .................................... yes
  VK_KHR_display ......................... yes
  QNX:
    lgmon ................................ no
    IMF .................................. no
  XCB:
    Using system-provided xcb-xinput ..... no
    GL integrations:
      GLX Plugin ......................... yes
        XCB GLX .......................... yes
      EGL-X11 Plugin ..................... yes
  Windows:
    Direct 2D ............................ no
    Direct 2D 1.1 ........................ no
    DirectWrite .......................... no
    DirectWrite 3 ........................ no
Qt Widgets:
  GTK+ ................................... yes
  Styles ................................. Fusion Windows
Qt Testlib:
  Tester for item models ................. yes
Qt PrintSupport:
  CUPS ................................... yes
Qt Sql Drivers:
  DB2 (IBM) .............................. no
  InterBase .............................. no
  MySql .................................. no
  OCI (Oracle) ........................... no
  ODBC ................................... yes
  PostgreSQL ............................. no
  SQLite ................................. yes
    Using system provided SQLite ......... no
--Qt is now configured for building. Just run 'cmake --build . --parallel'Once everything is built, you must run 'cmake --install .'
Qt will be installed into '/home/user/clang-env'To configure and build other Qt modules, you can use the following convenience script:
        /home/user/clang-env/bin/qt-configure-moduleIf reconfiguration fails for some reason, try removing 'CMakeCache.txt' from the build directory-- Configuring done
-- Generating done
-- Build files have been written to: /home/user/libs-dev/qt-build
$ cmake --build . --target all --
[741/1601] Generating socket_interface.h, socket_interface.cpp
FAILED: qtbase/src/gui/socket_interface.h qtbase/src/gui/socket_interface.cpp /home/user/libs-dev/qt-build/qtbase/src/gui/socket_interface.h /home/user/libs-dev/q
t-build/qtbase/src/gui/socket_interface.cpp
cd /home/user/libs-dev/qt-build/qtbase/src/gui && /home/user/libs-dev/qt-build/qtbase/bin/qdbusxml2cpp -i QtGui/private/qspi_struct_marshallers_p.h -p socket_inte
rface.h:socket_interface.cpp /home/user/libs-dev/qt-everywhere-src-6.4.2/qtbase/src/gui/accessible/linux/dbusxml/Socket.xml
[742/1601] Generating bus_interface.h, bus_interface.cpp
FAILED: qtbase/src/gui/bus_interface.h qtbase/src/gui/bus_interface.cpp /home/user/libs-dev/qt-build/qtbase/src/gui/bus_interface.h /home/user/libs-dev/qt-build/q
tbase/src/gui/bus_interface.cpp
cd /home/user/libs-dev/qt-build/qtbase/src/gui && /home/user/libs-dev/qt-build/qtbase/bin/qdbusxml2cpp -i QtGui/private/qspi_struct_marshallers_p.h -p bus_interfa
ce.h:bus_interface.cpp /home/user/libs-dev/qt-everywhere-src-6.4.2/qtbase/src/gui/accessible/linux/dbusxml/Bus.xml
[743/1601] Generating deviceeventcontroller_adaptor.h, deviceeventcontroller_adaptor.cpp
FAILED: qtbase/src/gui/deviceeventcontroller_adaptor.h qtbase/src/gui/deviceeventcontroller_adaptor.cpp /home/user/libs-dev/qt-build/qtbase/src/gui/deviceeventco
ntroller_adaptor.h /home/user/libs-dev/qt-build/qtbase/src/gui/deviceeventcontroller_adaptor.cpp
cd /home/user/libs-dev/qt-build/qtbase/src/gui && /home/user/libs-dev/qt-build/qtbase/bin/qdbusxml2cpp -i QtGui/private/qspi_struct_marshallers_p.h -a deviceevent
controller_adaptor.h:deviceeventcontroller_adaptor.cpp /home/user/libs-dev/qt-everywhere-src-6.4.2/qtbase/src/gui/accessible/linux/dbusxml/DeviceEventController.
xml
[744/1601] Generating cache_adaptor.h, cache_adaptor.cpp
FAILED: qtbase/src/gui/cache_adaptor.h qtbase/src/gui/cache_adaptor.cpp /home/user/libs-dev/qt-build/qtbase/src/gui/cache_adaptor.h /home/user/libs-dev/qt-build/q
tbase/src/gui/cache_adaptor.cpp
cd /home/user/libs-dev/qt-build/qtbase/src/gui && /home/user/libs-dev/qt-build/qtbase/bin/qdbusxml2cpp -i QtGui/private/qspi_struct_marshallers_p.h -a cache_adapt
or.h:cache_adaptor.cpp /home/user/libs-dev/qt-everywhere-src-6.4.2/qtbase/src/gui/accessible/linux/dbusxml/Cache.xml
[748/1601] Building C object qtbase/src/plugins/sqldrivers/sqlite/CMakeFiles/QSQLiteDriverPlugin.dir/__/__/__/3rdparty/sqlite/sqlite3.c.o
ninja: build stopped: subcommand failed.

$ cd /home/user/libs-dev/qt-build/qtbase/src/gui
$ gdb --args /home/user/libs-dev/qt-build/qtbase/bin/qdbusxml2cpp -i QtGui/private/qspi_struct_marshallers_p.h -p socket_interface.h:socket_interface.cpp /home/user/libs-dev/qt-everywhere-src-6.4.2/qtbase/src/gui/accessible/linux/dbusxml/Socket.xml
Reading symbols from /home/user/libs-dev/qt-build/qtbase/bin/qdbusxml2cpp...
(No debugging symbols found in /home/user/libs-dev/qt-build/qtbase/bin/qdbusxml2cpp)
(gdb) r
Starting program: /home/user/libs-dev/qt-build/qtbase/bin/qdbusxml2cpp -i QtGui/private/qspi_struct_marshallers_p.h -p socket_interface.h:socket_interface.cpp /home/user/libs-dev/qt-everywhere-src-6.4.2/qtbase/src/gui/accessible/linux/dbusxml/Socket.xml
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/libthread_db.so.1".Program received signal SIGSEGV, Segmentation fault.
QtPrivate::qustrchr (str=..., c=<optimized out>) at /home/user/libs-dev/qt-everywhere-src-6.4.2/qtbase/src/corelib/text/qstring.cpp:450
450             __m256i result = _mm256_cmpeq_epi16(data, mch256);
(gdb) bt
#0  QtPrivate::qustrchr (str=..., c=<optimized out>) at /home/user/libs-dev/qt-everywhere-src-6.4.2/qtbase/src/corelib/text/qstring.cpp:450
#1  0x00007ffff7a4eef6 in (anonymous namespace)::qFindChar (cs=Qt::CaseSensitive, from=<optimized out>, ch=..., str=...)
    at /home/user/libs-dev/qt-everywhere-src-6.4.2/qtbase/src/corelib/text/qstringview.h:136
#2  QtPrivate::findString (haystack0=..., from=<optimized out>, needle0=..., cs=cs@entry=Qt::CaseSensitive)
    at /home/user/libs-dev/qt-everywhere-src-6.4.2/qtbase/src/corelib/text/qstring.cpp:10632
#3  0x00007ffff7a5e7cd in (anonymous namespace)::splitString<QList<QStringView>, QStringView> (cs=<optimized out>, behavior=..., sep=..., source=...)
    at /home/user/libs-dev/qt-everywhere-src-6.4.2/qtbase/src/corelib/text/qstring.cpp:7635
#4  QStringView::split (this=<optimized out>, sep=..., behavior=..., cs=Qt::CaseSensitive)
    at /home/user/libs-dev/qt-everywhere-src-6.4.2/qtbase/src/corelib/text/qstring.cpp:7711
#5  0x00007ffff7a5ed64 in QStringView::split (this=<optimized out>, sep=..., behavior=..., cs=<optimized out>)
    at /home/user/libs-dev/qt-everywhere-src-6.4.2/qtbase/src/corelib/text/qstring.cpp:7716
#6  0x00005555555612a3 in classNameForInterface(QString const&, ClassType) ()
#7  0x000055555555c918 in writeProxy(QString const&, QMap<QString, QSharedDataPointer<QDBusIntrospection::Interface> > const&) ()
#8  0x000055555555c138 in main ()
(gdb)