Build QT for MacOS separately in Debug and Release configuration:
tar xf qt-everywhere-src-6.4.2.tar.xz
cd ~/build/qt
export MY_QT_SRC_DIR=~/repos/qt-everywhere-src-6.4.2
export MY_MODE=release
#export MY_MODE=debug
export MY_INSTALL_PATH=~/libs/QT6.4/${MY_MODE}/MacOs
${MY_QT_SRC_DIR}/configure -prefix $MY_INSTALL_PATH -c++std c++20 -opensource -confirm-license \
-static -static-runtime -${MY_MODE} -force-debug-info \
-no-openssl -securetransport -DQT_NO_EXCEPTIONS=1 \
-skip qt3d -skip qt5compat -skip qtactiveqt -skip qtcharts -skip qtcoap -skip qtconnectivity \
-skip qtdatavis3d -skip qtdoc -skip qtlottie -skip qtmqtt -skip qtnetworkauth -skip qtopcua \
-skip qtserialport -skip qtpositioning -skip qtquicktimeline -skip qtquick3d -skip qtremoteobjects \
-skip qtscxml -skip qtsensors -skip qtserialbus -skip qtvirtualkeyboard -skip qtwayland \
-skip qtwebchannel -skip qtwebengine -skip qtwebview -skip qtquick3dphysics -skip qtspeech -skip qtlocation \
-skip qthttpserver \
-- -DCMAKE_OSX_ARCHITECTURES="x86_64;arm64" \
&& cmake --build . --parallel \
&& cmake --install .
Then build QT for iOS:
cd ~/build/qt
export MY_QT_SRC_DIR=~/repos/qt-everywhere-src-6.4.2
export MY_MODE=release
#export MY_MODE=debug
export MY_HOST_PATH=~/libs/QT6.4/${MY_MODE}/MacOs
export MY_INSTALL_PATH=~/libs/QT6.4/${MY_MODE}/iOS
${MY_QT_SRC_DIR}/configure -prefix $MY_INSTALL_PATH -qt-host-path $MY_HOST_PATH \
-platform macx-ios-clang -c++std c++20 -opensource -confirm-license \
-static -static-runtime -$MY_MODE -force-debug-info \
-no-openssl -securetransport -DQT_NO_EXCEPTIONS=1 \
-skip qt3d -skip qt5compat -skip qtactiveqt -skip qtcharts -skip qtcoap -skip qtconnectivity \
-skip qtdatavis3d -skip qtdoc -skip qtlottie -skip qtmqtt -skip qtnetworkauth -skip qtopcua \
-skip qtserialport -skip qtpositioning -skip qtquicktimeline -skip qtquick3d -skip qtremoteobjects \
-skip qtscxml -skip qtsensors -skip qtserialbus -skip qtvirtualkeyboard -skip qtwayland \
-skip qtwebchannel -skip qtwebengine -skip qtwebview -skip qtquick3dphysics -skip qtspeech -skip qtlocation \
-skip qthttpserver \
&& cmake --build . --parallel \
&& cmake --install .
It should build with the following warnings:
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib: for architecture: x86_64 file: /Users/admin/libs/QT6.4/release/MacOs/lib/libQt6Core.a(archdetect.cpp.o) has no symbols
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib: for architecture: x86_64 file: /Users/admin/libs/QT6.4/release/MacOs/lib/libQt6Core.a(qiterable.cpp.o) has no symbols
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib: for architecture: x86_64 file: /Users/admin/libs/QT6.4/release/MacOs/lib/libQt6Core.a(qpointer.cpp.o) has no symbols
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib: for architecture: x86_64 file: /Users/admin/libs/QT6.4/release/MacOs/lib/libQt6Core.a(qstringtokenizer.cpp.o) has no symbols
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib: for architecture: x86_64 file: /Users/admin/libs/QT6.4/release/MacOs/lib/libQt6Core.a(qstringview.cpp.o) has no symbols
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib: for architecture: x86_64 file: /Users/admin/libs/QT6.4/release/MacOs/lib/libQt6Core.a(qrefcount.cpp.o) has no symbols
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib: for architecture: x86_64 file: /Users/admin/libs/QT6.4/release/MacOs/lib/libQt6Core.a(qshareddata.cpp.o) has no symbols
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib: for architecture: x86_64 file: /Users/admin/libs/QT6.4/release/MacOs/lib/libQt6Core.a(qatomic.cpp.o) has no symbols
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib: for architecture: x86_64 file: /Users/admin/libs/QT6.4/release/MacOs/lib/libQt6Core.a(qexception.cpp.o) has no symbols
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib: for architecture: x86_64 file: /Users/admin/libs/QT6.4/release/MacOs/lib/libQt6Core.a(qsharedmemory_posix.cpp.o) has no symbols
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/ranlib: for architecture: x86_64 file: /Users/admin/libs/QT6.4/release/MacOs/lib/libQt6Core.a(qsystemsemaphore_posix.cpp.o) has no symbols
Compile IOS program from linux commandline:
https://stackoverflow.com/questions/28085052/compile-ios-program-from-linux-commandline
https://docs.godotengine.org/en/stable/contributing/development/compiling/cross-compiling_for_ios_on_linux.html
https://commandlinefanatic.com/cgi-bin/showarticle.cgi?article=art024
https://askubuntu.com/questions/328343/how-to-compile-build-and-run-objective-c-program-in-ubuntu-using-terminal
https://github.com/tpoechtrager/osxcross