Qt 6 WASM example app build error error: unable to find library -lfreetype

$:/src/texteditor$ LANG=C make
sed -e s/@APPNAME@/texteditor/g /src/qt5/qtbase/mkspecs/features/wasm/../../../src/plugins/platforms/wasm/wasm_shell.html > /src/texteditor/texteditor.html
cp -f /src/qt5/qtbase/mkspecs/features/wasm/../../../src/plugins/platforms/wasm/qtloader.js /src/texteditor
cp -f /src/qt5/qtbase/mkspecs/features/wasm/../../../src/plugins/platforms/wasm/qtlogo.svg /src/texteditor
em++ -s WASM=1 -s FULL_ES2=1 -s FULL_ES3=1 -s USE_WEBGL2=1 -s EXIT_RUNTIME=1 -s ERROR_ON_UNDEFINED_SYMBOLS=1 -s EXTRA_EXPORTED_RUNTIME_METHODS=["UTF16ToString","stringToUTF16"] --bind -s FETCH=1 -O2 -s USE_PTHREADS=1 -s PTHREAD_POOL_SIZE=4 -s TOTAL_MEMORY=1GB -lfreetype -lpng -o texteditor.js texteditor.o documenthandler.o qrc_texteditor.o   /src/qt5/qtbase/lib/libQt6QuickControls2.so /src/qt5/qtbase/lib/libQt6Quick.so /src/qt5/qtbase/lib/libQt6OpenGL.so /src/qt5/qtbase/lib/libQt6Widgets.so /src/qt5/qtbase/lib/libQt6Gui.so /src/qt5/qtbase/lib/libQt6QmlModels.so /src/qt5/qtbase/lib/libQt6Qml.so /src/qt5/qtbase/lib/libQt6Network.so /src/qt5/qtbase/lib/libQt6Core.so -lpthread -lGLX -lOpenGL   
wasm-ld: error: unable to find library -lfreetype
wasm-ld: error: unable to find library -lpng
wasm-ld: error: unable to find library -lGLX
wasm-ld: error: unable to find library -lOpenGL
em++: error: '/src/emsdk/upstream/bin/wasm-ld -o texteditor.wasm -lfreetype -lpng texteditor.o documenthandler.o qrc_texteditor.o -lGLX -lOpenGL -L/src/emsdk/upstream/emscripten/cache/sysroot/lib/wasm32-emscripten --whole-archive /src/emsdk/upstream/emscripten/cache/sysroot/lib/wasm32-emscripten/libfetch-mt.a /src/emsdk/upstream/emscripten/cache/sysroot/lib/wasm32-emscripten/libembind-rtti.a --no-whole-archive /src/emsdk/upstream/emscripten/cache/sysroot/lib/wasm32-emscripten/libgl-mt-webgl2-full_es3.a /src/emsdk/upstream/emscripten/cache/sysroot/lib/wasm32-emscripten/libal.a /src/emsdk/upstream/emscripten/cache/sysroot/lib/wasm32-emscripten/libhtml5.a /src/emsdk/upstream/emscripten/cache/sysroot/lib/wasm32-emscripten/libc-mt.a /src/emsdk/upstream/emscripten/cache/sysroot/lib/wasm32-emscripten/libcompiler_rt-mt.a /src/emsdk/upstream/emscripten/cache/sysroot/lib/wasm32-emscripten/libc++-mt-noexcept.a /src/emsdk/upstream/emscripten/cache/sysroot/lib/wasm32-emscripten/libc++abi-mt-noexcept.a /src/emsdk/upstream/emscripten/cache/sysroot/lib/wasm32-emscripten/libdlmalloc-mt.a /src/emsdk/upstream/emscripten/cache/sysroot/lib/wasm32-emscripten/libc_rt_wasm.a /src/emsdk/upstream/emscripten/cache/sysroot/lib/wasm32-emscripten/libsockets-mt.a -mllvm -combiner-global-alias-analysis=false -mllvm -enable-emscripten-sjlj -mllvm -disable-lsr --lto-legacy-pass-manager --allow-undefined --import-memory --shared-memory --strip-debug --export main --export stackSave --export stackRestore --export stackAlloc --export __wasm_call_ctors --export fflush --export __errno_location --export __emscripten_pthread_data_constructor --export __pthread_tsd_run_dtors --export _emscripten_call_on_thread --export _emscripten_do_dispatch_to_thread --export _emscripten_main_thread_futex --export _emscripten_thread_init --export emscripten_current_thread_process_queued_calls --export _emscripten_allow_main_runtime_queued_calls --export emscripten_futex_wake --export emscripten_get_global_libc --export emscripten_main_browser_thread_id --export emscripten_main_thread_process_queued_calls --export emscripten_register_main_browser_thread_id --export emscripten_run_in_main_runtime_thread_js --export emscripten_stack_set_limits --export emscripten_sync_run_in_main_thread_2 --export emscripten_sync_run_in_main_thread_4 --export emscripten_tls_init --export pthread_self --export memalign --export malloc --export free --export-table -z stack-size=5242880 --initial-memory=1073741824 --no-entry --max-memory=1073741824 --global-base=1024' failed (1)
make: *** [Makefile:225: texteditor.js] Error 1

cat config.summary Building for: wasm-emscripten (x86_64, CPU features: mmx sse sse2)
Compiler: gcc 8.3.0
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
  Target compiler supports:
    SSE .................................. SSE2 SSE3 SSSE3 SSE4.1 SSE4.2
    AVX .................................. AVX AVX2
    AVX512 ............................... F ER CD PF DQ BW VL IFMA VBMI
    Other x86 ............................ AES F16C RDRAND SHA
    Intrinsics without -mXXX option ...... yes
  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 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 ...................... no
Qt Core:
  DoubleConversion ....................... yes
    Using system DoubleConversion ........ no
  GLib ................................... yes
  ICU .................................... yes
  Using system libb2 ..................... no
  Built-in copy of the MIME database ..... yes
  Tracing backend ........................ <none>
  Logging backends:
    journald ............................. no
    syslog ............................... no
    slog2 ................................ no
  PCRE2 .................................. yes
    Using system PCRE2 ................... no
  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 ................................. no
  Brotli Decompression Support ........... no
Qt Gui:
  Accessibility .......................... yes
  FreeType ............................... yes
    Using system FreeType ................ yes
  HarfBuzz ............................... yes
    Using system HarfBuzz ................ no
  Fontconfig ............................. yes
  Image formats:
    GIF .................................. yes
    ICO .................................. yes
    JPEG ................................. yes
      Using system libjpeg ............... no
    PNG .................................. yes
      Using system libpng ................ yes
  Text formats:
    HtmlParser ........................... yes
    CssParser ............................ yes
    OdfWriter ............................ yes
    MarkdownReader ....................... yes
      Using system libmd4c ............... no
    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
  INTEGRITY HID .......................... no
  mtdev .................................. yes
  tslib .................................. no
  xkbcommon .............................. yes
  X11 specific:
    XLib ................................. yes
    XCB Xlib ............................. yes
    EGL on X11 ........................... yes
    xkbcommon-x11 ........................ 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 ............................ no
    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 ..... yes
    Native painting (experimental) ....... 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 ................................... no
Qt Sql Drivers:
  DB2 (IBM) .............................. no
  InterBase .............................. no
  MySql .................................. no
  OCI (Oracle) ........................... no
  ODBC ................................... no
  PostgreSQL ............................. no
  SQLite ................................. yes
    Using system provided SQLite ......... no
Qt QML:
  QML network support .................... yes
  QML debugging and profiling support .... yes
  QML just-in-time compiler .............. yes
  QML sequence object .................... yes
  QML XML http request ................... yes
  QML Locale ............................. yes
Qt QML Models:
  QML list model ......................... yes
  QML delegate model ..................... yes
Qt Quick:
  AnimatedImage item ..................... yes
  Canvas item ............................ yes
  Support for Qt Quick Designer .......... yes
  Flipable item .......................... yes
  GridView item .......................... yes
  ListView item .......................... yes
  TableView item ......................... yes
  Path support ........................... yes
  PathView item .......................... yes
  Positioner items ....................... yes
  Repeater item .......................... yes
  ShaderEffect item ...................... yes
  Sprite item ............................ yes
Qt 5 Compatibility Libraries:
  iconv .................................. no
Qt Tools:
  Qt Assistant ........................... yes
  QDoc ................................... no
  Clang-based lupdate parser ............. no
  Qt Designer ............................ yes
  Qt Distance Field Generator ............ yes
  kmap2qmap .............................. yes
  Qt Linguist ............................ yes
  Mac Deployment Tool .................... no
  pixeltool .............................. yes
  qdbus .................................. yes
  qev .................................... yes
  Qt Attributions Scanner ................ yes
  qtdiag ................................. yes
  qtpaths ................................ yes
  qtplugininfo ........................... yes
  Windows deployment tool ................ no
Qt Quick Templates 2:
  Hover support .......................... yes
  Multi-touch support .................... yes
Qt Quick Controls 2:
  Styles ................................. Basic Fusion Imagine Material Universal macOS Windows
Further Image Formats:
  JasPer ................................. no
  MNG .................................... no
  TIFF ................................... no
    Using system libtiff ................. no
  WEBP ................................... no
    Using system libwebp ................. no
Serial Port:
  ntddmodm ............................... no
QtQuick3D:
  Assimp ................................. yes
  System Assimp .......................... no
Qt Wayland Drivers:
  EGL .................................... yes
  Raspberry Pi ........................... no
  XComposite EGL ......................... yes
  XComposite GLX ......................... yes
  DRM EGL ................................ yes
  libhybris EGL .......................... no
  Linux dma-buf server buffer integration  yes
  Vulkan-based server buffer integration . yes
  Shm emulation server buffer integration  yes
Qt Wayland Client Shell Integrations:
  xdg-shell .............................. yes
  wayland_client_xdg_shell_v5 ............ no
  wayland_client_xdg_shell_v6 ............ no
  ivi-shell .............................. yes
  wl-shell (deprecated) .................. yes
Qt Wayland Client ........................ yes
Qt Wayland Compositor .................... yes
Qt Wayland Compositor Layer Plugins:
  VSP2 hardware layer integration ........ no
Qt Wayland Drivers:
  EGL .................................... yes
  Raspberry Pi ........................... no
  XComposite EGL ......................... yes
  XComposite GLX ......................... yes
  DRM EGL ................................ yes
  libhybris EGL .......................... no
  Linux dma-buf server buffer integration  yes
  Vulkan-based server buffer integration . yes
  Shm emulation server buffer integration  yes
Qt Wayland Client Shell Integrations:
  xdg-shell .............................. yes
  wayland_client_xdg_shell_v5 ............ no
  wayland_client_xdg_shell_v6 ............ no
  ivi-shell .............................. yes
  wl-shell (deprecated) .................. yes
Qt Wayland Client ........................ yes
Qt Wayland Compositor .................... yes
Qt Wayland Compositor Layer Plugins:
  VSP2 hardware layer integration ........ no
Note: No wayland-egl support detected. Cross-toolkit compatibility disabled.
Note: No wayland-egl support detected. Cross-toolkit compatibility disabled.
WARNING: QDoc will not be compiled, probably because libclang could not be located. This means that you cannot build the Qt documentation.
Either set CMAKE_PREFIX_PATH or LLVM_INSTALL_DIR to the location of your llvm installation.
On Linux systems, you may be able to install libclang by installing the libclang-dev or libclang-devel package, depending on your distribution.
On macOS, you can use Homebrew's llvm package.
You will also need to set the FEATURE_clang CMake variable to ON to re-evaluate this check.
WARNING: Clang-based lupdate parser will not be available. LLVM and Clang C++ libraries have not been found.
You will need to set the FEATURE_clangcpp CMake variable to ON to re-evaluate this check.