Cross compile Qt for Windows with MinGW64

ozaq

I am trying to accomplish a Linux to Windows cross build of QT with MinGW64 with the current source tarball (https://download.qt.io/official_releases/qt/6.2/6.2.2/single/qt-everywhere-src-6.2.2.tar.xz)

I have found some helpful documentation in https://github.com/qt/qtbase/blob/6.2.2/cmake/README.md, with this I am able to build QT for the host system. According to the doc I first need a host build of QT for the cross build to generate sources. Building QT for the host system works as described in the link.

However if I am them attempting the the cross build with CMake, i.e.

cmake <path-to-sources> -GNinja \
    -DCMAKE_BUILD_TYPE=Release \
    -DCMAKE_SYSTEM_NAME=Windows \
    -DCMAKE_C_COMPILER=x86_64-w64-mingw32-gcc-posix \
    -DCMAKE_CXX_COMPILER=x86_64-w64-mingw32-c++-posix \
    -DQT_HOST_PATH=/path-to-host-build

I am running into an error:

ERROR: The OpenGL functionality tests failed!
You might need to modify the include and library search paths by editing
QMAKE_INCDIR_OPENGL[_ES2], QMAKE_LIBDIR_OPENGL[_ES2] and QMAKE_LIBS_OPENGL[_ES2] in the mkspec for your platform.

Any idea why this is happening in the cross build and not in the host build?

Or should I use the configure script instead? I did find blog post like this one: https://medium.com/@vladadgad/cross-compile-qt-for-windows-on-linux-platform-57e4b71ed1aa however the options passed to configure are not mentioned in configure --help . Ideally I am looking for a pointer to the right documentation how to cross build with either the configure script or with cmake directly.

Thanks for reading, any help is appreciated.

ozaq

Unfortunately I have not made any progress on this issue since posting this. Is anyone aware of a better place to ask this question?

Any help would be very much appreciated.

raven-worx

@ozaq
this thread might help:
https://forum.qt.io/topic/132307/qt6-cross-compile-for-windows