Crosscompile qt6wayland for aarch64/imx8 using cmake
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I try to crosscompile qt6 to an imx8 based platform. I add the script/toolchain.cmake/patch file at the end of this post.
The first steps are working well but when cross building qtwayland I always hit this error message from cmake
-- The CXX compiler identification is GNU 12.3.0 -- The C compiler identification is GNU 12.3.0 -- Detecting CXX compiler ABI info -- Detecting CXX compiler ABI info - done -- Check for working CXX compiler: /home/mweisser/projects/sd/MCP/Devices/MCPJ/../../../../os/toolchain/linux/12/aarch64-gs-linux-gnu/bin/aarch64-gs-linux-gnu-g++ - 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/mweisser/projects/sd/MCP/Devices/MCPJ/../../../../os/toolchain/linux/12/aarch64-gs-linux-gnu/bin/aarch64-gs-linux-gnu-gcc - skipped -- Detecting C compile features -- Detecting C compile features - done CMake Error at CMakeLists.txt:16 (find_package): Could not find a package configuration file provided by "Qt6" (requested version 6.6.1) with any of the following names: Qt6Config.cmake qt6-config.cmake Add the installation prefix of "Qt6" to CMAKE_PREFIX_PATH or set "Qt6_DIR" to a directory containing one of the above files. If "Qt6" provides a separate development package or SDK, be sure it has been installed.Is anyone out there who was able to compile a qt submodule using cmake? I tried a lot of approaches found here and on the web like
https://forum.qt.io/topic/139492/qt6-cross-compile-for-imx6-with-wayland-support
https://wiki.qt.io/Cross-Compile_Qt_6_for_Raspberry_Pi
https://www.tal.org/tutorials/building-qt-65-sub-modules
but nothing works with sometimes different error messages. Any help would be greatly appreciated.This is the script I currently use:
#!/bin/bash set -e BUILDBASE=$HOME/tmp/qt mkdir -p $BUILDBASE export TCBASE=$WORKSPACE/../../../../os/toolchain/linux/12/aarch64-gs-linux-gnu export TCSYSROOT=$WORKSPACE/install/linux/armv8/sysroot-imx8x #cleanup if [[ true == true ]]; then rm -rf build-* host-qt target-qt qtbase-* qtwayland-* fi #Get the source files cd $BUILDBASE if [[ true == true ]]; then if [[ ! -f "qtbase-everywhere-src-6.6.1.tar.xz" ]]; then wget https://download.qt.io/official_releases/qt/6.6/6.6.1/submodules/qtbase-everywhere-src-6.6.1.tar.xz fi tar xavf qtbase-everywhere-src-6.6.1.tar.xz git apply --verbose qt6.patch if [[ ! -f "qtwayland-everywhere-src-6.6.1.tar.xz" ]]; then wget https://download.qt.io/official_releases/qt/6.6/6.6.1/submodules/qtwayland-everywhere-src-6.6.1.tar.xz fi tar xavf qtwayland-everywhere-src-6.6.1.tar.xz fi #Build Qt6 base for host cd $BUILDBASE if [[ true == true ]]; then rm -rf build-base-host mkdir -p build-base-host cd build-base-host cmake -GNinja \ -DCMAKE_BUILD_TYPE=Release \ -DQT_BUILD_EXAMPLES=OFF \ -DQT_BUILD_TESTS=OFF \ -DCMAKE_INSTALL_PREFIX=$BUILDBASE/host-qt \ -S $BUILDBASE/qtbase-everywhere-src-6.6.1 ninja install fi #Build Qt6 wayland for host cd $BUILDBASE if [[ true == true ]]; then rm -rf build-wayland-host mkdir -p build-wayland-host cd build-wayland-host cmake -GNinja \ -DCMAKE_INSTALL_PREFIX=$BUILDBASE/host-qt \ -S $BUILDBASE/qtwayland-everywhere-src-6.6.1 ninja install fi #Build Qt6 base for target cd $BUILDBASE if [[ true == true ]]; then rm -rf build-base-target mkdir -p build-base-target cd build-base-target cmake -GNinja \ -DCMAKE_TOOLCHAIN_FILE=$BUILDBASE/toolchain.cmake \ -DCMAKE_BUILD_TYPE=Release \ -DINPUT_opengl=es2 \ -DFEATURE_vulkan=OFF \ -DFEATURE_linuxfb=OFF \ -DFEATURE_eglfs=OFF \ -DQT_BUILD_EXAMPLES=OFF \ -DQT_BUILD_TESTS=OFF \ -DQT_QMAKE_TARGET_MKSPEC=devices/linux-gsimx8x-g++ \ -DCMAKE_INSTALL_PREFIX=$BUILDBASE/target-qt \ -DQT_HOST_PATH=$BUILDBASE/host-qt \ -S $BUILDBASE/qtbase-everywhere-src-6.6.1 ninja install fi #Build Qt6 wayland for target cd $BUILDBASE if [[ true == true ]]; then rm -rf build-wayland-target mkdir -p build-wayland-target cd build-wayland-target cmake -GNinja \ -DCMAKE_TOOLCHAIN_FILE=$BUILDBASE/toolchain.cmake \ -DCMAKE_INSTALL_PREFIX=$BUILDBASE/target-qt \ -DQT_HOST_PATH=$BUILDBASE/host-qt \ -S $BUILDBASE/qtwayland-everywhere-src-6.6.1 ninja install fiThis the toolchain.cmake file
set(CMAKE_SYSTEM_NAME Linux) set(CMAKE_SYSTEM_PROCESSOR aarch64) set(CMAKE_C_COMPILER $ENV{TCBASE}/bin/aarch64-gs-linux-gnu-gcc) set(CMAKE_CXX_COMPILER $ENV{TCBASE}/bin/aarch64-gs-linux-gnu-g++) set(CMAKE_SYSROOT $ENV{TCSYSROOT}) set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER) set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY) set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY) set(CMAKE_FIND_ROOT_PATH_MODE_PACKAGE ONLY)And this my patch for the device support
diff -N -u -r diff/qtbase-everywhere-src-6.6.1/mkspecs/devices/linux-gsimx8x-g++/qmake.conf src/qtbase-everywhere-src-6.6.1/mkspecs/devices/linux-gsimx8x-g++/qmake.conf --- diff/qtbase-everywhere-src-6.6.1/mkspecs/devices/linux-gsimx8x-g++/qmake.conf 1970-01-01 01:00:00.000000000 +0100 +++ src/qtbase-everywhere-src-6.6.1/mkspecs/devices/linux-gsimx8x-g++/qmake.conf 2023-03-13 16:30:35.102872758 +0100 @@ -0,0 +1,37 @@ +# +# qmake configuration for the NXP i.MX8 based boards (64-bit) +# +# The configuration below is set up for running with the fbdev-style +# Vivante graphics stack. (so eglfs with the eglfs_viv backend, no +# direct drm use via eglfs_kms) + +# Wayland should also be functional. However, when writing Wayland +# *compositors* with Qt, the eglfs backend will have to be switched to +# eglfs_viv_wl by setting the QT_QPA_EGLFS_INTEGRATION environment +# variable. +# +# Below is an example configure line that assumes there is an AArch64 +# toolchain and sysroot available in $HOME/imx8. On device Qt is +# expected to be placed under /usr/local/qt514 whereas on the host +# 'make install' will copy the host tools and the target libraries to +# $HOME/imx8/qt5. +# +# ./configure -release -opengl es2 -device linux-imx8-g++ \ +# -device-option CROSS_COMPILE=~/imx8/toolchain/x86_64-pokysdk-linux/usr/bin/aarch64-poky-linux/aarch64-poky-linux- \ +# -sysroot ~/imx8/sysroot \ +# -opensource -confirm-license -make libs -prefix /usr/local/qt514 -extprefix ~/imx8/qt5 -v + +include(../common/linux_device_pre.conf) + +QMAKE_LIBS_EGL += -lEGL +QMAKE_LIBS_OPENGL_ES2 += -lGLESv2 -lEGL -lGAL +QMAKE_LIBS_OPENVG += -lOpenVG -lEGL -lGAL + +QMAKE_CFLAGS += -march=armv8-a -mtune=cortex-a35 -DLINUX=1 -DEGL_API_FB +QMAKE_CXXFLAGS += -march=armv8-a -mtune=cortex-a35 -DLINUX=1 -DEGL_API_FB + +DISTRO_OPTS += aarch64 + +include(../common/linux_arm_device_post.conf) + +load(qt_config) diff -N -u -r diff/qtbase-everywhere-src-6.6.1/mkspecs/devices/linux-gsimx8x-g++/qplatformdefs.h src/qtbase-everywhere-src-6.6.1/mkspecs/devices/linux-gsimx8x-g++/qplatformdefs.h --- diff/qtbase-everywhere-src-6.6.1/mkspecs/devices/linux-gsimx8x-g++/qplatformdefs.h 1970-01-01 01:00:00.000000000 +0100 +++ src/qtbase-everywhere-src-6.6.1/mkspecs/devices/linux-gsimx8x-g++/qplatformdefs.h 2023-03-13 16:27:31.874515218 +0100 @@ -0,0 +1,40 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the qmake spec of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or (at your option) the GNU General +** Public license version 3 or any later version approved by the KDE Free +** Qt Foundation. The licenses are as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "../../linux-g++/qplatformdefs.h"