在之前的系列博文中* 安装 Pi OS* 在 Ubuntu 20 LTS 上为树莓计算模块 4 交叉编译 Qt 5.15。* 在 Ubuntu 20 LTS 上为交叉编译配置 Qt Creator

我写过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。

这篇博文是对目前最新的 Qt 6.8 版本的更新，raspi OS Bookworm 和Ubuntu 22.04 LTS 。

我使用了以下硬件和软件： *Raspberry Pi 4 *raspi OS Bookworm, 没有推荐的软件 *Ubuntu 22.04 LTS *Qt 6.8 *QtCreator 14.02

如果你的笔记本电脑或台式电脑有足够的内存和 CPU 内核，你可以在虚拟机中进行交叉编译。但我的经验是，本机速度更快，产生的错误也更少。

请查看我的代码示例中的文件路径和 IP 地址，并根据自己的需要进行调整。

• 从https://www.raspberrypi.com/software/operating-systems下载 raspiOS
• 2024-07-04-raspios-bookworm-arm64.img.xz：64 位 Raspberry Pi 操作系统，带桌面（不带推荐软件）。
• 使用 Balena Etcher 将映像闪存到 SD 卡上
• 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 192.168.2.167 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 gstreamer1.0-omx 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

• 发现 gcc、ld 和 ldd 的版本。应下载相同版本的源代码，以便稍后构建交叉编译器。

pi@raspberrypi:~ $ gcc --version
gcc (Debian 12.2.0-14) 12.2.0
Copyright (C) 2022 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

pi@raspberrypi:~ $ ld --version
GNU ld (GNU Binutils for Debian) 2.40
Copyright (C) 2023 Free Software Foundation, Inc.
This program is free software; you may redistribute it under the terms of
the GNU General Public License version 3 or (at your option) a later version.
This program has absolutely no warranty.

pi@raspberrypi:~ $ ldd --version
ldd (Debian GLIBC 2.36-9+rpt2+deb12u8) 2.36
Copyright (C) 2022 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
Written by Roland McGrath and Ulrich Drepper.

• 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

• 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 build-essential libclang-dev 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 build-essential gawk git texinfo bison file wget libssl-dev gdbserver gdb-multiarch libxcb-cursor-dev

从源代码生成最新版本的 cmake：

cd ~
wget https://github.com/Kitware/CMake/releases/download/v3.30.5/cmake-3.30.5.tar.gz
tar -xzvf cmake-3.30.5.tar.gz
cd cmake-3.30.5
./bootstrap
make -j$(nproc)
sudo make install
# Update PATH Environment Variable
which cmake
/usr/local/bin/cmake
export PATH=/usr/local/bin/cmake:$PATH
source ~/.bashrc
cmake --version

将 gcc 作为交叉编译器编译

下载必要的源代码。你应该根据自己的需要修改以下命令。在我制作本页时，它们是

• gcc 12.2.0
• binutils 2.40（ld 版本）
• glibc 2.36（ldd 版本）

cd ~
mkdir gcc_all && cd gcc_all
wget https://ftpmirror.gnu.org/binutils/binutils-2.40.tar.bz2
wget https://ftpmirror.gnu.org/glibc/glibc-2.36.tar.bz2
wget https://ftpmirror.gnu.org/gcc/gcc-12.2.0/gcc-12.2.0.tar.gz
git clone --depth=1 https://github.com/raspberrypi/linux
tar xf binutils-2.40.tar.bz2
tar xf glibc-2.36.tar.bz2
tar xf gcc-12.2.0.tar.gz
rm *.tar.*
cd gcc-12.2.0
contrib/download_prerequisites

• 创建一个用于安装编译器的文件夹。

sudo mkdir -p /opt/cross-pi-gcc
sudo chown $USER /opt/cross-pi-gcc
export PATH=/opt/cross-pi-gcc/bin:$PATH

• 将内核头文件复制到上述文件夹中。

cd ~/gcc_all
cd linux
KERNEL=kernel7
make ARCH=arm64 INSTALL_HDR_PATH=/opt/cross-pi-gcc/aarch64-linux-gnu headers_install

• 编译 Binutils。

cd ~/gcc_all
mkdir build-binutils && cd build-binutils
../binutils-2.40/configure --prefix=/opt/cross-pi-gcc --target=aarch64-linux-gnu --with-arch=armv8 --disable-multilib
make -j 8
make install

• 编辑 gcc-12.2.0/libsanitizer/asan/asan_linux.cpp。添加以下代码

#ifndef PATH_MAX
#define PATH_MAX 4096
#endif

• 部分编译 gcc。

cd ~/gcc_all
mkdir build-gcc && cd build-gcc
../gcc-12.2.0/configure --prefix=/opt/cross-pi-gcc --target=aarch64-linux-gnu --enable-languages=c,c++ --disable-multilib
make -j8 all-gcc
make install-gcc

• 部分编译 Glibc。

cd ~/gcc_all
mkdir build-glibc && cd build-glibc
../glibc-2.36/configure --prefix=/opt/cross-pi-gcc/aarch64-linux-gnu --build=$MACHTYPE --host=aarch64-linux-gnu --target=aarch64-linux-gnu --with-headers=/opt/cross-pi-gcc/aarch64-linux-gnu/include --disable-multilib libc_cv_forced_unwind=yes
make install-bootstrap-headers=yes install-headers
make -j8 csu/subdir_lib
install csu/crt1.o csu/crti.o csu/crtn.o /opt/cross-pi-gcc/aarch64-linux-gnu/lib
aarch64-linux-gnu-gcc -nostdlib -nostartfiles -shared -x c /dev/null -o /opt/cross-pi-gcc/aarch64-linux-gnu/lib/libc.so
touch /opt/cross-pi-gcc/aarch64-linux-gnu/include/gnu/stubs.h

• 返回 gcc。

cd ~/gcc_all/build-gcc
make -j8 all-target-libgcc
make install-target-libgcc

• 完成编译 glibc。

cd ~/gcc_all/build-glibc
make -j8
make install

• 完成编译 gcc

cd ~/gcc_all/build-gcc
make -j8
make install

至此，我们已经有了完整的 gcc 交叉编译工具链。不再需要 gcc_all 文件夹。可以将其删除。

构建 Qt6 有两种可能。可以下载"single" (https://download.qt.io/official_releases/qt/6.8/6.8.0/single/qt-everywhere-src-6.8.0.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。我在工作区/qt-rpi-交叉编译目录下创建了这个文件夹。

cd ~/workspace/qt-rpi-cross-compilation
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 ~/workspace/qt-rpi-cross-compilation/qt6/src
wget https://download.qt.io/official_releases/qt/6.8/6.8.0/submodules/qtbase-everywhere-src-6.8.0.tar.xz
tar xf qtbase-everywhere-src-6.8.0.tar.xz

为主机构建 Qt6

cd ~/workspace/qt-rpi-cross-compilation/qt6/host-build/
cmake ../src/qtbase-everywhere-src-6.8.0/ -GNinja -DCMAKE_BUILD_TYPE=Release -DQT_BUILD_EXAMPLES=OFF -DQT_BUILD_TESTS=OFF -DCMAKE_INSTALL_PREFIX=$HOME/qt6/host
cmake --build . --parallel 8
cmake --install .

二进制文件将位于 ~/workspace/qt-rpi-cross-compilation/qt6/host 中

为 rpi 构建 Qt6

通过 SSH 使用 rsync 从 rpi 复制并粘贴几个文件夹。

cd ~
rsync -avz --rsync-path="sudo rsync" [email protected]:/usr/include workspace/qt-rpi-cross-compilation/rpi-sysroot/usr
rsync -avz --rsync-path="sudo rsync" [email protected]:/lib workspace/qt-rpi-cross-compilation/rpi-sysroot
rsync -avz --rsync-path="sudo rsync" [email protected]:/usr/lib workspace/qt-rpi-cross-compilation/rpi-sysroot/usr 
rsync -avz --rsync-path="sudo rsync" [email protected]:/opt/vc workspace/qt-rpi-cross-compilation/rpi-sysroot/opt

• 在 ~/workspace/qt-rpi-cross-compilation/qt6 中创建名为 toolchain.cmake 的文件。 您需要根据自己的环境调整 "set(TARGET_SYSROOT /home/factory/workspace/qt-rpi-cross-compilation/rpi-sysroot)" 这一行。

cmake_minimum_required(VERSION 3.18)
include_guard(GLOBAL)

set(CMAKE_SYSTEM_NAME Linux)
set(CMAKE_SYSTEM_PROCESSOR arm)

# You should change location of sysroot to your needs.
set(TARGET_SYSROOT /home/factory/workspace/qt-rpi-cross-compilation/rpi-sysroot)
set(TARGET_ARCHITECTURE aarch64-linux-gnu)
set(CMAKE_SYSROOT ${TARGET_SYSROOT})

set(ENV{PKG_CONFIG_PATH} $PKG_CONFIG_PATH:${CMAKE_SYSROOT}/usr/lib/${TARGET_ARCHITECTURE}/pkgconfig)
set(ENV{PKG_CONFIG_LIBDIR} /usr/lib/pkgconfig:/usr/share/pkgconfig/:${TARGET_SYSROOT}/usr/lib/${TARGET_ARCHITECTURE}/pkgconfig:${TARGET_SYSROOT}/usr/lib/pkgconfig)
set(ENV{PKG_CONFIG_SYSROOT_DIR} ${CMAKE_SYSROOT})

set(CMAKE_C_COMPILER /opt/cross-pi-gcc/bin/${TARGET_ARCHITECTURE}-gcc)
set(CMAKE_CXX_COMPILER /opt/cross-pi-gcc/bin/${TARGET_ARCHITECTURE}-g++)

set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -isystem=/usr/include -isystem=/usr/local/include -isystem=/usr/include/${TARGET_ARCHITECTURE}")
set(CMAKE_CXX_FLAGS "${CMAKE_C_FLAGS}")

set(QT_COMPILER_FLAGS "-march=armv8-a")
set(QT_COMPILER_FLAGS_RELEASE "-O2 -pipe")
set(QT_LINKER_FLAGS "-Wl,-O1 -Wl,--hash-style=gnu -Wl,--as-needed -Wl,-rpath-link=${TARGET_SYSROOT}/usr/lib/${TARGET_ARCHITECTURE} -Wl,-rpath-link=$HOME/qt6/pi/lib")

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/${TARGET_ARCHITECTURE}/:${TARGET_SYSROOT}/usr:${TARGET_SYSROOT}/usr/lib)

set(EGL_INCLUDE_DIR ${GL_INC_DIR})
set(EGL_LIBRARY ${XCB_PATH_VARIABLE}/usr/lib/${TARGET_ARCHITECTURE}/libEGL.so)

set(OPENGL_INCLUDE_DIR ${GL_INC_DIR})
set(OPENGL_opengl_LIBRARY ${XCB_PATH_VARIABLE}/usr/lib/${TARGET_ARCHITECTURE}/libOpenGL.so)

set(GLESv2_INCLUDE_DIR ${GL_INC_DIR})
set(GLIB_LIBRARY ${XCB_PATH_VARIABLE}/usr/lib/${TARGET_ARCHITECTURE}/libGLESv2.so)

set(GLESv2_INCLUDE_DIR ${GL_INC_DIR})
set(GLESv2_LIBRARY ${XCB_PATH_VARIABLE}/usr/lib/${TARGET_ARCHITECTURE}/libGLESv2.so)

set(gbm_INCLUDE_DIR ${GL_INC_DIR})
set(gbm_LIBRARY ${XCB_PATH_VARIABLE}/usr/lib/${TARGET_ARCHITECTURE}/libgbm.so)

set(Libdrm_INCLUDE_DIR ${GL_INC_DIR})
set(Libdrm_LIBRARY ${XCB_PATH_VARIABLE}/usr/lib/${TARGET_ARCHITECTURE}/libdrm.so)

set(XCB_XCB_INCLUDE_DIR ${GL_INC_DIR})
set(XCB_XCB_LIBRARY ${XCB_PATH_VARIABLE}/usr/lib/${TARGET_ARCHITECTURE}/libxcb.so)

list(APPEND CMAKE_LIBRARY_PATH ${CMAKE_SYSROOT}/usr/lib/${TARGET_ARCHITECTURE})
list(APPEND CMAKE_PREFIX_PATH "/usr/lib/${TARGET_ARCHITECTURE}/cmake")

• 修复绝对符号链接

cd ~/workspace/qt-rpi-cross-compilation
wget https://raw.githubusercontent.com/riscv/riscv-poky/master/scripts/sysroot-relativelinks.py
chmod +x sysroot-relativelinks.py 
python3 sysroot-relativelinks.py rpi-sysroot

• 编译 rpi 的源代码。

cd $HOME/workspace/qt-rpi-cross-compilation/qt6/pi-build
cmake ../src/qtbase-everywhere-src-6.8.0/ -GNinja -DCMAKE_BUILD_TYPE=Release -DINPUT_opengl=es2 -DQT_BUILD_EXAMPLES=OFF -DQT_BUILD_TESTS=OFF -DQT_HOST_PATH=$HOME/workspace/qt-rpi-cross-compilation/qt6/host -DCMAKE_STAGING_PREFIX=$HOME/workspace/qt-rpi-cross-compilation/qt6/pi -DCMAKE_INSTALL_PREFIX=/usr/local/qt6 -DCMAKE_TOOLCHAIN_FILE=$HOME/workspace/qt-rpi-cross-compilation/qt6/toolchain.cmake -DQT_QMAKE_TARGET_MKSPEC=devices/linux-rasp-pi4-aarch64 -DQT_FEATURE_xcb=ON -DFEATURE_xcb_xlib=ON -DQT_FEATURE_xlib=ON
cmake --build . --parallel 8
cmake --install .

• 将二进制文件发送给 rpi。

rsync -avz --rsync-path="sudo rsync" $HOME/workspace/qt-rpi-cross-compilation/qt6/pi/* [email protected]:/usr/local/qt6

• 设置编译器

  

  

• 设置调试器

  

• 设置设备

  使用 "测试 "按钮测试连接

• 设置 Qt 版本

  

• 设置工具包

  

• 在 "CMake 配置 "中点击 "更改 "并添加以下命令。

-DCMAKE_TOOLCHAIN_FILE:UNINITIALIZED=/home/pmy/qt6/pi/lib/cmake/Qt6/qt.toolchain.cmake

QtCreator 项目设置

如果你在 QtCreator 中创建一个项目，你必须调整"Run" 配置。在"Environment" ，你必须添加

-LD_LIBRARY_PATH=:/usr/local/qt6/lib/

添加 QML 模块

• 下载源代码：

cd ~/workspace/qt-rpi-cross-compilation/qt6/src
wget https://download.qt.io/official_releases/qt/6.8/6.8.0/submodules/qtshadertools-everywhere-src-6.8.0.tar.xz
tar xf qtshadertools-everywhere-src-6.8.0.tar.xz
wget https://download.qt.io/official_releases/qt/6.8/6.8.0/submodules/qtdeclarative-everywhere-src-6.8.0.tar.xz
tar xf qtdeclarative-everywhere-src-6.8.0.tar.xz

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 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 ~/workspace/qt-rpi-cross-compilation/qt6/host-build
rm -rf *
$HOME/workspace/qt-rpi-cross-compilation/qt6/host/bin/qt-configure-module ../src/qtshadertools-everywhere-src-6.8.0
cmake --build . --parallel 8
cmake --install .
rm -rf *
$HOME/workspace/qt-rpi-cross-compilation/qt6/host/bin/qt-configure-module ../src/qtdeclarative-everywhere-src-6.8.0
cmake --build . --parallel 8
cmake --install .

• 为 rpi 构建模块

cd ~/workspace/qt-rpi-cross-compilation/qt6/pi-build
rm -rf *
$HOME/workspace/qt-rpi-cross-compilation/qt6/pi/bin/qt-configure-module ../src/qtshadertools-everywhere-src-6.8.0
cmake --build . --parallel 8
cmake --install .
rm -rf *
$HOME/workspace/qt-rpi-cross-compilation/qt6/pi/bin/qt-configure-module ../src/qtdeclarative-everywhere-src-6.8.0
cmake --build . --parallel 8
cmake --install .

• 向 rpi 发送二进制文件。

rsync -avz --rsync-path="sudo rsync" $HOME/workspace/qt-rpi-cross-compilation/qt6/pi/* [email protected]:/usr/local/qt6

编写本《说明》时使用的资料来源：

• https://wiki.qt.io/Cross-Compile_Qt_6_for_Raspberry_Pi
• https://github.com/MuyePan/CrossCompileQtForRpi

谢谢大家。