为 RaspiOS Trixie 交叉编译 Qt 6.10

导言

在之前的博文中 Install Raspberry Pi OS on the Raspberry Compute Module 4我写了关于在树莓计算模块上安装 Raspbian 以及在 Ubuntu 20 上为 QtCreator 设置交叉编译的文章。

这篇博文更新了目前最新的 Qt 6.10 版本、RaspiOS Trixie 和Ubuntu 24.04 LTS 。

在这种情况下，我使用了在 MacBook Pro M1 上用 UTM 创建的虚拟机。

要求

使用了以下硬件和软件

Raspberry Pi Compute Module 5
已安装 UTM 的 MacBook Pro M1
Ubuntu 24.0.4 LTS，arm64
Qt 6.10.1 版本
QtCreator 18

本博文不涉及计算模块 5 和 Ubuntu 在 UTM 中的安装和设置，因为互联网上有很多相关教程。

设置树莓 CM5

使用 Raspberry Pi相机
按照安装程序操作，不要忘记远程连接（ssh）设置
用 ssh 连接到 RPi -> 在我的例子中，连接到 IP 地址 192.168.2.194 和用户 pi -> 从你的 Ubuntu 主机连接到 RPi

ssh [email protected]

安装所需软件：

sudo apt-get install libboost-all-dev libudev-dev libinput-dev libts-dev libmtdev-dev libjpeg-dev libfontconfig1-dev libssl-dev libdbus-1-dev libglib2.0-dev libxkbcommon-dev libegl1-mesa-dev libgbm-dev libgles2-mesa-dev mesa-common-dev libasound2-dev libpulse-dev libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev  gstreamer1.0-alsa libvpx-dev libsrtp2-dev libsnappy-dev libnss3-dev "^libxcb.*" flex bison libxslt-dev ruby gperf libbz2-dev libcups2-dev libatkmm-1.6-dev libxi6 libxcomposite1 libfreetype6-dev libicu-dev libsqlite3-dev libxslt1-dev

sudo apt-get install libavcodec-dev libavformat-dev libswscale-dev libx11-dev freetds-dev libsqlite3-dev libpq-dev libiodbc2-dev firebird-dev libxext-dev libxcb1 libxcb1-dev libx11-xcb1 libx11-xcb-dev libxcb-keysyms1 libxcb-keysyms1-dev libxcb-image0 libxcb-image0-dev libxcb-shm0 libxcb-shm0-dev libxcb-icccm4 libxcb-icccm4-dev libxcb-sync1 libxcb-sync-dev libxcb-render-util0 libxcb-render-util0-dev libxcb-xfixes0-dev libxrender-dev libxcb-shape0-dev libxcb-randr0-dev libxcb-glx0-dev libxi-dev libdrm-dev libxcb-xinerama0 libxcb-xinerama0-dev libatspi2.0-dev libxcursor-dev libxcomposite-dev libxdamage-dev libxss-dev libxtst-dev libpci-dev libcap-dev libxrandr-dev libdirectfb-dev libaudio-dev libxkbcommon-x11-dev gdbserver

创建 Qt 6 安装文件夹：

sudo mkdir /usr/local/qt6

在 ~/.bashrc 的末尾添加以下代码并更新更改：

export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/qt6/lib/
source ~/.bashrc

设置 Ubuntu 24.04 LTS

更新到最新版本的软件包：

sudo apt update
sudo apt upgrade

安装以下软件包

sudo apt-get install make cmake build-essential libclang-dev clang ninja-build gcc git bison python3 gperf pkg-config libfontconfig1-dev libfreetype6-dev libx11-dev libx11-xcb-dev libxext-dev libxfixes-dev libxi-dev libxrender-dev libxcb1-dev libxcb-glx0-dev libxcb-keysyms1-dev libxcb-image0-dev libxcb-shm0-dev libxcb-icccm4-dev libxcb-sync-dev libxcb-xfixes0-dev libxcb-shape0-dev libxcb-randr0-dev libxcb-render-util0-dev libxcb-util-dev libxcb-xinerama0-dev libxcb-xkb-dev libxkbcommon-dev libxkbcommon-x11-dev libatspi2.0-dev libgl1-mesa-dev libglu1-mesa-dev freeglut3-dev python3-html5lib libxcb-dri3-dev libxkbfile-dev libxshmfence-dev libxrandr-dev libxcursor-dev libxcomposite-dev libdrm-dev libwayland-dev

构建 Qt6

构建 Qt6 有两种可能。可以下载"single" (https://download.qt.io/official_releases/qt/6.10/6.10.1/single/qt-everywhere-src-6.10.1.tar.xz) 版本，其中包含qtbase 和所有子模块。这是非常重的东西，需要大量的人力和时间来编译。

我的建议是，先编译qtbase ，然后再分别编译所需的各个子模块。

为 sysroot 和 qt6 创建文件夹。我在 Documents/Cross-Compile/raspi-os-trixie 目录下创建了这些文件夹。

mkdir ~/Documents/Qt-Cross-Compile ~/Documents/Qt-Cross-Compile/raspi-os-trixie
cd ~/Documents/Qt-Cross-Compile/raspi-os-trixie
mkdir rpi-sysroot rpi-sysroot/usr rpi-sysroot/opt
mkdir qt6 qt6/host qt6/pi qt6/host-build qt6/pi-build qt6/src

下载 QtBase 源代码

cd ~/Documents/Qt-Cross-Compile/raspi-os-trixie/qt6/src
wget https://download.qt.io/official_releases/qt/6.10/6.10.1/submodules/qtbase-everywhere-src-6.10.1.tar.xz
tar xf qtbase-everywhere-src-6.10.1.tar.xz

将 qtbase-everywhere-src-6.10.1 重命名为 qtbase，因为 qttranslations 无法在 qtbase-everywhere-src-6.10.1 下运行。

mv qtbase-everywhere-src-6.10.1 qtbase

为主机构建 Qt6

cd ~/Documents/Qt-Cross-Compile/raspi-os-trixie/qt6/host-build

cmake ../src/qtbase/ -GNinja -DCMAKE_BUILD_TYPE=Release -DQT_BUILD_EXAMPLES=OFF -DQT_BUILD_TESTS=OFF -DCMAKE_INSTALL_PREFIX=$HOME/Documents/Qt-Cross-Compile/raspi-os-trixie/qt6/host

cmake --build . --parallel 8
cmake --install .

二进制文件将放在 ~/Documents/Qt-Cross-Compile/raspi-os-trixie/qt6/host 中

为 rpi 构建 Qt6

使用 rsync 通过 SSH 从 rpi 复制并粘贴几个文件夹。

cd ~/Documents/Qt-Cross-Compile/raspi-os-trixie
rsync -avzS --rsync-path="rsync" --delete [email protected]:/lib/* ~/Documents/Qt-Cross-Compile/raspi-os-trixie/rpi-sysroot/lib
rsync -avzS --rsync-path="rsync" --delete [email protected]:/usr/include/* ~/Documents/Qt-Cross-Compile/raspi-os-trixie/rpi-sysroot/usr/include
rsync -avzS --rsync-path="rsync" --delete [email protected]:/usr/lib/* ~/Documents/Qt-Cross-Compile/raspi-os-trixie/rpi-sysroot/usr/lib
rsync -avzS --rsync-path="rsync" --delete [email protected]:/opt/vc ~/Documents/Qt-Cross-Compile/raspi-os-trixie/rpi-sysroot/opt/vc

在 ~/Documents/Qt-Cross-Compile/raspi-os-trixie 中创建名为 toolchain.cmake 的文件。
您需要根据环境调整 "set(TARGET_SYSROOT ~/Documents/Qt-Cross-Compile/raspi-os-trixie/rpi-sysroot)" 这一行。

cmake_minimum_required(VERSION 3.18)
include_guard(GLOBAL)

set(CMAKE_SYSTEM_NAME Linux)
set(CMAKE_SYSTEM_PROCESSOR arm)

set(TARGET_SYSROOT /home/whale/Documents/Qt-Cross-Compile/raspi-os-trixie/rpi-sysroot)
set(CMAKE_SYSROOT ${TARGET_SYSROOT})

set(ENV{PKG_CONFIG_PATH} $PKG_CONFIG_PATH:/usr/lib/aarch64-linux-gnu/pkgconfig)
set(ENV{PKG_CONFIG_LIBDIR} /usr/lib/pkgconfig:/usr/share/pkgconfig/:${TARGET_SYSROOT}/usr/lib/aarch64-linux-gnu/pkgconfig:${TARGET_SYSROOT}/usr/lib/pkgconfig)
set(ENV{PKG_CONFIG_SYSROOT_DIR} ${CMAKE_SYSROOT})

# if you use other version of gcc and g++ than gcc/g++ 9, you must change the following variables
set(CMAKE_C_COMPILER /usr/bin/aarch64-linux-gnu-gcc-13)
set(CMAKE_CXX_COMPILER /usr/bin/aarch64-linux-gnu-g++-13)

set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -I${TARGET_SYSROOT}/usr/include")
set(CMAKE_CXX_FLAGS "${CMAKE_C_FLAGS}")

set(QT_COMPILER_FLAGS "-march=armv8-a")
set(QT_COMPILER_FLAGS_RELEASE "-O2 -pipe -DNDEBUG")
set(QT_LINKER_FLAGS "-Wl,-O1 -Wl,--hash-style=gnu -Wl,--as-needed")

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)
set(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)
set(CMAKE_BUILD_RPATH ${TARGET_SYSROOT})


include(CMakeInitializeConfigs)

function(cmake_initialize_per_config_variable _PREFIX _DOCSTRING)
  if (_PREFIX MATCHES "CMAKE_(C|CXX|ASM)_FLAGS")
    set(CMAKE_${CMAKE_MATCH_1}_FLAGS_INIT "${QT_COMPILER_FLAGS}")

    foreach (config DEBUG RELEASE MINSIZEREL RELWITHDEBINFO)
      if (DEFINED QT_COMPILER_FLAGS_${config})
        set(CMAKE_${CMAKE_MATCH_1}_FLAGS_${config}_INIT "${QT_COMPILER_FLAGS_${config}}")
      endif()
    endforeach()
  endif()


  if (_PREFIX MATCHES "CMAKE_(SHARED|MODULE|EXE)_LINKER_FLAGS")
    foreach (config SHARED MODULE EXE)
      set(CMAKE_${config}_LINKER_FLAGS_INIT "${QT_LINKER_FLAGS}")
    endforeach()
  endif()

  _cmake_initialize_per_config_variable(${ARGV})
endfunction()

set(XCB_PATH_VARIABLE ${TARGET_SYSROOT})

set(GL_INC_DIR ${TARGET_SYSROOT}/usr/include)
set(GL_LIB_DIR ${TARGET_SYSROOT}:${TARGET_SYSROOT}/usr/lib/aarch64-linux-gnu/:${TARGET_SYSROOT}/usr:${TARGET_SYSROOT}/usr/lib)

set(EGL_INCLUDE_DIR ${GL_INC_DIR})
set(EGL_LIBRARY ${XCB_PATH_VARIABLE}/usr/lib/aarch64-linux-gnu/libEGL.so)

set(OPENGL_INCLUDE_DIR ${GL_INC_DIR})
set(OPENGL_opengl_LIBRARY ${XCB_PATH_VARIABLE}/usr/lib/aarch64-linux-gnu/libOpenGL.so)

set(GLESv2_INCLUDE_DIR ${GL_INC_DIR})
set(GLESv2_LIBRARY ${XCB_PATH_VARIABLE}/usr/lib/aarch64-linux-gnu/libGLESv2.so)

set(gbm_INCLUDE_DIR ${GL_INC_DIR})
set(gbm_LIBRARY ${XCB_PATH_VARIABLE}/usr/lib/aarch64-linux-gnu/libgbm.so)

set(Libdrm_INCLUDE_DIR ${GL_INC_DIR})
set(Libdrm_LIBRARY ${XCB_PATH_VARIABLE}/usr/lib/aarch64-linux-gnu/libdrm.so)

set(XCB_XCB_INCLUDE_DIR ${GL_INC_DIR})
set(XCB_XCB_LIBRARY ${XCB_PATH_VARIABLE}/usr/lib/aarch64-linux-gnu/libxcb.so)

修复绝对符号链接

sudo apt install symlinks
cd ~/Documents/Qt-Cross-Compile/raspi-os-trixie
symlinks -rc rpi-sysroot

编译 rpi 的源代码。

cd ~/Documents/Qt-Cross-Compile/raspi-os-trixie/qt6/pi-build

cmake ../src/qtbase/ -GNinja -DCMAKE_BUILD_TYPE=Release -DINPUT_opengl=es2 -DQT_BUILD_EXAMPLES=OFF -DQT_BUILD_TESTS=OFF -DQT_HOST_PATH=$HOME/Documents/Qt-Cross-Compile/raspi-os-trixie/qt6/host -DCMAKE_STAGING_PREFIX=$HOME/Documents/Qt-Cross-Compile/raspi-os-trixie/qt6/pi -DCMAKE_INSTALL_PREFIX=/usr/local/qt6 -DCMAKE_TOOLCHAIN_FILE=$HOME/Documents/Qt-Cross-Compile/raspi-os-trixie/toolchain.cmake -DQT_QMAKE_TARGET_MKSPEC=devices/linux-rasp-pi4-aarch64 -DQT_FEATURE_wayland=ON

cmake --build . --parallel 8
cmake --install .

向 rpi 发送二进制文件。

rsync -avz --rsync-path="sudo rsync" $HOME/Documents/Qt-Cross-Compile/raspi-os-trixie/qt6/pi/* [email protected]:/usr/local/qt6

配置 QtCreator

设置编译器
Set up Debuggers
Set up Devices

Test the connection with the button "Test"
Set up Qt Versions
Set up Kits
Customize build, deploy and run settings

添加 Qt 子模块

下载源代码：

cd ~/Documents/Qt-Cross-Compile/raspi-os-trixie/qt6/src
wget https://download.qt.io/official_releases/qt/6.10/6.10.1/submodules/qttools-everywhere-src-6.10.1.tar.xz
tar xf qttools-everywhere-src-6.10.1.tar.xz
mv qttools-everywhere-src-6.10.1 qttools

您必须在/workspace/qt-rpi-cross-compilation/qt6/src/qtdeclarative-everywhere-src-6.8.0/dependencies.yaml 和/workspace/qt-rpi-cross-compilation/qt6/src/qtshadertools-everywhere-src-6.8.0/dependencies.yaml 上检查依赖关系。

确保首先构建并安装所需的模块。

为主机构建模块。

cd ~/Documents/Qt-Cross-Compile/raspi-os-trixie/qt6/host-build
rm -rf *
$HOME/Documents/Qt-Cross-Compile/raspi-os-trixie/qt6/host/bin/qt-configure-module ../src/qttools
cmake --build . --parallel 8
cmake --install .

为 rpi 构建模块

cd ~/Documents/Qt-Cross-Compile/raspi-os-trixie/qt6/pi-build
rm -rf *
$HOME/Documents/Qt-Cross-Compile/raspi-os-trixie/qt6/pi/bin/qt-configure-module ../src/qttools
cmake --build . --parallel 8
cmake --install .

向 rpi 发送二进制文件。

rsync -avz --rsync-path="sudo rsync" $HOME/Documents/Qt-Cross-Compile/raspi-os-trixie/qt6/pi/* [email protected]:/usr/local/qt6

致谢

编写本《说明》时使用的资料来源：

https://wiki.qt.io/Cross-Compile_Qt_6_for_Raspberry_Pi