qt5.15.2 交叉编译 arm64

• qt5.15.2 交叉编译 arm64
  • 1. 环境
  • 2. 准备依赖
    • 2.1. 软件包说明
    • 2.2. 配置交叉编译环境
    • 2.3. 升级系统 GCC
    • 2.4. 下载依赖
    • 2.5. 编译依赖
      • 2.5.1. 前置条件
      • 2.5.2. 编译依赖
      • 2.5.3. nss交叉编译
      • 2.5.4. nodejs下载
      • 2.5.5. 检查编译
  • 3. 编译Qt
    • 3.1. 环境配置
    • 3.2. 添加交叉编译平台
    • 3.3. 编译脚本
    • 3.4. 问题
      • 3.4.1. chromium/third_party/libjpeg_turbo
      • 3.4.2. chromium/v8
  • 4. 验证
    • 4.1. 添加构建环境
  • 5. 总结
    • 5.1. /etc/profile
• 参考

该文主要介绍使用 CentOS7 x86_64 交叉编译为 arm64。

qt5.15.2 交叉编译 arm64

为了实现代码能够自动化编译成各个 Linux 系统或架构上能够运行的程序，采用 Jenkins 实现自动化部署，考虑到 arm64 实体机编译性能不好以及成本问题，于是就采用交叉编译。

1. 环境

• 虚拟机系统：CentOS-7-x86_64-DVD-2207-02.iso
• 交叉编译工具链：gcc-linaro-5.4.1-2017.05-x86_64_aarch64-linux-gnu.tar.xz 和 sysroot-glibc-linaro-2.21-2017.05-aarch64-linux-gnu.tar.xz
• Qt：qt-everywhere-src-5.15.2.tar.xz

项目中用到证书以及网页，所以我需要 OpenSSL X11 WebEngine 模块

• X11 依赖：Qt for X11 Requirements Qt 5.15
• WebEngine 依赖：Qt WebEngine Platform Notes Qt WebEngine 5.15.16

编译qt core需要4G内存，编译X11需要8G，编译WebEngine至少需要24G，否则会内存耗尽导致退出

2. 准备依赖

2.1. 软件包说明

所有的原始文件都是放在 /cross 目录下

mkdir /cross
cd /cross

软件包	下载地址	路径	安装路径
gcc-linaro-5.4.1-2017.05-x86_64_aarch64-linux-gnu.tar.xz	https://releases.linaro.org/components/toolchain/binaries/5.4-2017.05/aarch64-linux-gnu/	/cross
sysroot-glibc-linaro-2.21-2017.05-aarch64-linux-gnu.tar.xz	https://releases.linaro.org/components/toolchain/binaries/5.4-2017.05/aarch64-linux-gnu/	/cross	/sysroot-aarch64
gcc-5.4.0.tar.gz	https://mirrors.nju.edu.cn/gnu/gcc/gcc-5.4.0/	/cross	/usr/local/gcc
各种依赖		/cross/dependence	/aarch64

2.2. 配置交叉编译环境

gcc-linaro-5.4.1-2017.05-x86_64_aarch64-linux-gnu 是交叉编译工具链，sysroot-glibc-linaro-2.21-2017.05-aarch64-linux-gnu 是交叉编译目标环境，如果不是通用环境可以参考野火交叉编译 Qt 库文章¹。

需要做的就是解压以及配置环境变量

# 解压
tar -xvf gcc-linaro-5.4.1-2017.05-x86_64_aarch64-linux-gnu.tar.xz
# 修改环境变量文件
vim /etc/profile
# 添加
export PATH=/cross/gcc-linaro-5.4.1-2017.05-x86_64_aarch64-linux-gnu/bin:$PATH
# 使环境变量文件生效
source /etc/profile

# 解压
tar -xvf sysroot-glibc-linaro-2.21-2017.05-aarch64-linux-gnu.tar.xz
# 移动并改名，为了路径简短
mv sysroot-glibc-linaro-2.21-2017.05-aarch64-linux-gnu /sysroot-aarch64

使用 aarch64-linux-gnu-gcc -v 查看到版本即为配置成功。

2.3. 升级系统 GCC

CentOS7 默认的版本的是 gcc4.8，为了和交叉编译统一，需要升级版本为 gcc5.4。

# 可能缺失基础 gcc
yum install gcc gcc-c++

# 升级 gcc
tar -xvf gcc-5.4.0.tar.gz
cd gcc-5.4.0
# 自动检查预编译环境并安装，需要联网
./contrib/download_prerequisites
# 安装路径是 /usr/local/gcc
./configure --prefix=/usr/local/gcc --enable-checking=release --enable-languages=c,c++ --disable-multilib
make -j4 && make install

# 修改环境变量文件
vim /etc/profile
# 添加
export PATH=/usr/local/gcc/bin:$PATH
export LD_LIBRARY_PATH=/usr/local/gcc/lib64:$LD_LIBRARY_PATH
# 使环境变量文件生效
source /etc/profile

使用 gcc -v 查看到版本即为配置成功。

2.4. 下载依赖

X11 相关下载网址：https://www.x.org/releases/individual/

文件都放在 /cross/dependence

mkdir /cross/dependence
cd /cross/dependence

以下是下载 OpenSSL X11 WebEngine 所需要依赖库的脚本 download_dependence.sh，需要联网使用且部分还需要挂代理。

#!/bin/sh
# openssl
wget -c https://www.openssl.org/source/old/1.1.1/openssl-1.1.1q.tar.gz

# x11 dependence
wget -c https://www.x.org/releases/individual/proto/xorgproto-2020.1.tar.gz
wget -c https://www.x.org/releases/individual/lib/libXrender-0.9.10.tar.gz
wget -c https://www.x.org/releases/individual/lib/xtrans-1.4.0.tar.gz
wget -c https://www.x.org/releases/individual/lib/libXau-1.0.9.tar.gz
wget -c https://www.x.org/releases/individual/lib/libXrender-0.9.10.tar.gz
wget -c https://www.x.org/releases/individual/lib/libXext-1.3.4.tar.gz
wget -c https://www.x.org/releases/individual/lib/libXrandr-1.5.2.tar.gz
wget -c https://www.x.org/releases/individual/lib/libXfixes-5.0.3.tar.gz
wget -c https://www.x.org/releases/individual/lib/libXcomposite-0.4.5.tar.gz
wget -c https://www.x.org/releases/individual/lib/libXcursor-1.2.0.tar.gz
wget -c https://www.x.org/releases/individual/lib/libXi-1.7.10.tar.gz
wget -c https://www.x.org/releases/individual/lib/libXScrnSaver-1.2.3.tar.gz
wget -c https://www.x.org/releases/individual/lib/libXtst-1.2.3.tar.gz
wget -c https://www.x.org/releases/individual/lib/libxshmfence-1.3.tar.gz
wget -c https://www.x.org/releases/individual/lib/libXxf86vm-1.1.4.tar.gz
wget -c https://www.x.org/releases/individual/util/util-macros-1.19.3.tar.gz
wget -c https://www.x.org/releases/individual/data/xkeyboard-config/xkeyboard-config-2.30.tar.gz
wget -c https://www.x.org/releases/individual/lib/libSM-1.2.3.tar.gz
wget -c https://www.x.org/releases/individual/lib/libICE-1.0.10.tar.gz
wget -c https://xkbcommon.org/download/libxkbcommon-1.4.0.tar.xz
wget -c https://dri.freedesktop.org/libdrm/libdrm-2.4.100.tar.gz

# xcb
wget -c https://www.x.org/releases/individual/xcb/libpthread-stubs-0.4.tar.gz
wget -c https://www.x.org/releases/individual/xcb/xcb-util-0.3.9.tar.gz
wget -c https://www.x.org/releases/individual/xcb/xcb-util-image-0.3.9.tar.gz
wget -c https://www.x.org/releases/individual/xcb/xcb-util-keysyms-0.3.9.tar.gz
wget -c https://www.x.org/releases/individual/xcb/xcb-util-wm-0.3.9.tar.gz
wget -c https://www.x.org/releases/individual/xcb/xcb-util-renderutil-0.3.9.tar.gz
wget -c https://www.x.org/releases/individual/xcb/xcb-proto-1.13.tar.gz
wget -c https://www.x.org/releases/individual/xcb/libxcb-1.13.tar.gz

# glib2
wget -c https://www.zlib.net/fossils/zlib-1.2.11.tar.gz
wget -c https://sourceforge.net/projects/pcre/files/pcre/8.45/pcre-8.45.tar.gz
wget -c https://github.com/libffi/libffi/releases/download/v3.3/libffi-3.3.tar.gz
wget -c https://github.com/SELinuxProject/selinux/releases/download/20191204/libsepol-3.0.tar.gz
wget -c https://github.com/SELinuxProject/selinux/releases/download/20191204/libselinux-3.0.tar.gz
wget -c https://ftp.acc.umu.se/pub/GNOME/sources/glib/2.61/glib-2.61.3.tar.xz

# x11
wget -c https://www.x.org/releases/individual/lib/libX11-1.7.5.tar.gz

# webengine
wget -c https://www.x.org/releases/individual/lib/libxkbfile-1.1.0.tar.gz
wget -c https://www.x.org/releases/individual/lib/libXdamage-1.1.5.tar.gz
wget -c https://github.com/libexpat/libexpat/releases/download/R_2_2_9/expat-2.2.9.tar.gz
wget -c https://dbus.freedesktop.org/releases/dbus/dbus-1.13.6.tar.gz
wget -c https://download.savannah.gnu.org/releases/freetype/freetype-2.10.1.tar.gz
wget -c ftp://xmlsoft.org/libxml2/libxml2-2.9.9.tar.gz
wget -c https://nchc.dl.sourceforge.net/project/libuuid/libuuid-1.0.3.tar.gz
wget -c https://www.freedesktop.org/software/fontconfig/release/fontconfig-2.13.92.tar.gz
wget -c https://github.com/sqlite/sqlite/archive/refs/tags/version-3.30.1.tar.gz
wget -c http://www.linuxfromscratch.org/patches/blfs/9.1/nss-3.50-standalone-1.patch
wget -c https://ftp.mozilla.org/pub/security/nss/releases/NSS_3_50_RTM/src/nss-3.50-with-nspr-4.25.tar.gz
wget -c https://gitlab.freedesktop.org/mesa/mesa/-/archive/mesa-19.0.0/mesa-mesa-19.0.0.tar.gz
wget -c https://github.com/unicode-org/icu/releases/download/release-65-1/icu4c-65_1-src.tgz
wget -c https://nodejs.org/download/release/latest-v10.x/node-v10.24.1.tar.gz

2.5. 编译依赖

2.5.1. 前置条件

上述依赖库编译还需要本机编译工具，以下代码是下载需要的编译工具

# xkbcommon 编译环境
yum install bison
yum install python3
python3 -m pip install meson
python3 -m pip install ninja
python3 -m pip install mako

# dbus 编译环境
yum install flex
yum install libtool

# nss 编译环境
yum install tcl
yum install patch
yum install zlib-devel
# qt 实际编译需要本地的 nss
yum install nss

# fontconfig 编译环境
yum install gperf

2.5.2. 编译依赖

文件都放在 /cross/dependence

xkbcommon glib mesa 是使用 meson 和 ninja 构建，所以需要编辑 cross-file。可能需要自行更改自己对应文件中编译相关目录。

编辑 aarch64_xkbcommon.txt，内容如下：

[binaries]
c = '/cross/gcc-linaro-5.4.1-2017.05-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu-gcc'
cpp = '/cross/gcc-linaro-5.4.1-2017.05-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu-c++'
ar = '/cross/gcc-linaro-5.4.1-2017.05-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu-ar'
strip = '/cross/gcc-linaro-5.4.1-2017.05-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu-strip'
ld = '/cross/gcc-linaro-5.4.1-2017.05-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu-ld'
pkgconfig = '/usr/bin/pkg-config'
 
[properties]
pkg_config_libdir = ['/aarch64/lib/pkgconfig', '/aarch64/share/pkgconfig']
skip_sanity_check = true
 
[paths]
libdir = '/aarch64/lib'
includedir = '/aarch64/include'
prefix = '/aarch64'
 
[host_machine]
system = 'linux'
cpu_family = 'arm'
cpu = 'ARM'
endian = 'little'
 
[build_machine]
system = 'linux'
cpu_family = 'x86_64'
cpu = 'i686'
endian = 'little'

编辑 aarch64_glib.txt，内容如下：

[binaries]
c = '/cross/gcc-linaro-5.4.1-2017.05-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu-gcc'
cpp = '/cross/gcc-linaro-5.4.1-2017.05-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu-c++'
ar = '/cross/gcc-linaro-5.4.1-2017.05-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu-ar'
strip = '/cross/gcc-linaro-5.4.1-2017.05-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu-strip'
ld = '/cross/gcc-linaro-5.4.1-2017.05-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu-ld'
pkgconfig = '/usr/bin/pkg-config'
 
[properties]
pkg_config_libdir = ['/aarch64/lib/pkgconfig', '/aarch64/share/pkgconfig']
skip_sanity_check = true
 
[paths]
libdir = '/aarch64/lib'
includedir = '/aarch64/include'
prefix = '/aarch64'
 
[host_machine]
system = 'linux'
cpu_family = 'arm'
cpu = 'ARM'
endian = 'little'
 
[build_machine]
system = 'linux'
cpu_family = 'x86_64'
cpu = 'i686'
endian = 'little'

编辑 aarch64_mesa.txt，内容如下：

[binaries]
c = '/cross/gcc-linaro-5.4.1-2017.05-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu-gcc'
cpp = '/cross/gcc-linaro-5.4.1-2017.05-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu-c++'
ar = '/cross/gcc-linaro-5.4.1-2017.05-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu-ar'
strip = '/cross/gcc-linaro-5.4.1-2017.05-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu-strip'
ld = '/cross/gcc-linaro-5.4.1-2017.05-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu-ld'
pkgconfig = '/usr/bin/pkg-config'
 
[properties]
pkg_config_libdir = ['/aarch64/lib/pkgconfig', '/aarch64/share/pkgconfig']
skip_sanity_check = true
 
[paths]
libdir = '/aarch64/lib'
includedir = '/aarch64/include'
prefix = '/aarch64'
 
[host_machine]
system = 'linux'
cpu_family = 'arm'
cpu = 'ARM'
endian = 'little'
 
[build_machine]
system = 'linux'
cpu_family = 'x86_64'
cpu = 'i686'
endian = 'little'

以下是编译依赖的脚本 aarch64_dependence.sh，直接运行即可

#!/bin/sh
set -e

MY_PREFIX=/aarch64
MY_HOST=aarch64-linux-gnu

export PKG_CONFIG_PATH=${MY_PREFIX}/lib/pkgconfig:${MY_PREFIX}/share/pkgconfig
export C_INCLUDE_PATH=${MY_PREFIX}/include:$C_INCLUDE_PATH
export LD_LIBRARY_PATH=${MY_PREFIX}/lib:$LD_LIBRARY_PATH

export CFLAGS="$CFLAGS -I${MY_PREFIX}/include"
export LDFLAGS="$LDFLAGS -L${MY_PREFIX}/lib"
export LDFLAGS="$LDFLAGS -Wl,-rpath-link=${MY_PREFIX}/lib -Wl,-rpath-link=${MY_PREFIX}/lib64"
export LDFLAGS="$LDFLAGS -Wl,-rpath=${MY_PREFIX}/lib -Wl,-rpath=${MY_PREFIX}/lib64"

export CC=${MY_HOST}-gcc
export CXX=${MY_HOST}-g++

build_script_openssl() {
    ./Configure \
        linux-aarch64 \
        --prefix=${MY_PREFIX}

    make -j4 && make install
}

build_script_xcb_common() {
    ./configure \
        --prefix=${MY_PREFIX} \
        --host=${MY_HOST} \
        --enable-option-checking \
        --enable-malloc0returnsnull

    make -j4 && make install
}

build_script_x11() {
    ./configure \
        --prefix=${MY_PREFIX} \
        --host=${MY_HOST} \
        --enable-option-checking \
        --enable-unix-transport \
        --enable-tcp-transport \
        --enable-ipv6 \
        --enable-local-transport \
        --enable-malloc0returnsnull

    make -j4 && make install
}

build_script_xkbcommon() {
    meson setup build \
        --prefix ${MY_PREFIX} \
        --buildtype release \
        --cross-file ../aarch64_xkbcommon.txt \
        -D enable-x11=true \
        -D enable-wayland=false \
        -D enable-docs=false \
        -D enable-xkbregistry=false \
        -D xkb-config-root=${MY_PREFIX}/lib/pkgconfig

    ninja -C build
    ninja -C build install
}

build_script_selinux() {
    export CC=${MY_HOST}-gcc
    export CXX=${MY_HOST}-g++
    export PREFIX=${MY_PREFIX}
    export SHLIBDIR=${MY_PREFIX}/lib
    make -j4 && make install
}

build_script_freetype() {
    ./configure \
        --prefix=${MY_PREFIX} \
        --host=${MY_HOST} \
        --with-zlib=no \
        --with-png=no \
        --enable-freetype-config

    make -j4 && make install
}

build_script_xml2() {
    ./configure \
        --prefix=${MY_PREFIX} \
        --host=${MY_HOST} \
        --with-zlib=no \
        --without-python

    make -j4 && make install
}

build_script_zlib() {
    ./configure \
        --prefix=${MY_PREFIX} \
        --shared \
        --static

    make -j4 && make install
}

build_script_glib() {
    meson setup build \
        --prefix ${MY_PREFIX} \
        --buildtype release \
        --cross-file ../aarch64_glib.txt \
        -D libmount=false

    ninja -C build
    ninja -C build install
}

build_script_mesa() {
    export CFLAGS="-I${MY_PREFIX}/include/libdrm -I${MY_PREFIX}/include/libdrm/nouveau $CFLAGS"
    meson setup build \
        --prefix ${MY_PREFIX} \
        --buildtype release \
        --cross-file ../aarch64_mesa.txt \
        -D gallium-drivers=nouveau,freedreno \
        -D platforms=x11

    ninja -C build
    ninja -C build install
}

build_script_icu() {
    mkdir $(pwd)/build
    cd $(pwd)/build
    ../runConfigureICU Linux/gcc
    make
    cd ..

    ./configure \
        --prefix=${MY_PREFIX} \
        --host=${MY_HOST} \
        --with-cross-build=$(pwd)/build

    make -j4 && make install
}

build_script_nodejs() {
    #linux host env
    export CC_host=gcc
    export CXX_host=g++

    #cross-compile env
    export CC=${MY_HOST}-gcc
    export CXX=${MY_HOST}-g++
    export AR=${MY_HOST}-ar
    export RANLIB=${MY_HOST}-ranlib

    #execute configure
    ./configure \
        --prefix=${MY_PREFIX} \
        --dest-cpu=arm64 \
        --dest-os=linux \
        --cross-compiling \
        --without-snapshot \
        --openssl-no-asm \
        --shared

    make -j4 && make install
}

build_openssl() {
    rm -rf openssl-1.1.1q
    tar -xvf openssl-1.1.1q.tar.gz
    cd openssl-1.1.1q
    build_script_openssl
    cd ..
}

build_xtrans() {
    rm -rf xtrans-1.4.0
    tar -xvf xtrans-1.4.0.tar.gz
    cd xtrans-1.4.0
    build_script_xcb_common
    cd ..
}

build_xcb_proto() {
    rm -rf xcb-proto-1.13
    tar -xvf xcb-proto-1.13.tar.gz
    cd xcb-proto-1.13
    build_script_xcb_common
    cd ..
}

build_xorgproto() {
    rm -rf xorgproto-2020.1
    tar -xvf xorgproto-2020.1.tar.gz
    cd xorgproto-2020.1
    build_script_xcb_common
    cd ..
}

build_Xau() {
    rm -rf libXau-1.0.9
    tar -xvf libXau-1.0.9.tar.gz
    cd libXau-1.0.9
    build_script_xcb_common
    cd ..
}

build_xcb() {
    rm -rf libxcb-1.13
    tar -xvf libxcb-1.13.tar.gz
    cd libxcb-1.13
    build_script_xcb_common
    cd ..
}

build_pthread() {
    rm -rf libpthread-stubs-0.4
    tar -xvf libpthread-stubs-0.4.tar.gz
    cd libpthread-stubs-0.4
    build_script_xcb_common
    cd ..
}

build_xcb_util() {
    rm -rf xcb-util-0.3.9
    tar -xvf xcb-util-0.3.9.tar.gz
    cd xcb-util-0.3.9
    build_script_xcb_common
    cd ..
}

build_xcb_util_image() {
    rm -rf xcb-util-image-0.3.9
    tar -xvf xcb-util-image-0.3.9.tar.gz
    cd xcb-util-image-0.3.9
    build_script_xcb_common
    cd ..
}

build_xcb_util_keysyms() {
    rm -rf xcb-util-keysyms-0.3.9
    tar -xvf xcb-util-keysyms-0.3.9.tar.gz
    cd xcb-util-keysyms-0.3.9
    build_script_xcb_common
    cd ..
}

build_xcb_util_renderutil() {
    rm -rf xcb-util-renderutil-0.3.9
    tar -xvf xcb-util-renderutil-0.3.9.tar.gz
    cd xcb-util-renderutil-0.3.9
    build_script_xcb_common
    cd ..
}

build_xcb_util_wm() {
    rm -rf xcb-util-wm-0.3.9
    tar -xvf xcb-util-wm-0.3.9.tar.gz
    cd xcb-util-wm-0.3.9
    build_script_xcb_common
    cd ..
}

build_util_macros() {
    rm -rf util-macros-1.19.3
    tar -xvf util-macros-1.19.3.tar.gz
    cd util-macros-1.19.3
    build_script_xcb_common
    cd ..
}

build_xrender() {
    rm -rf libXrender-0.9.10
    tar -xvf libXrender-0.9.10.tar.gz
    cd libXrender-0.9.10
    build_script_xcb_common
    cd ..
}

build_xext() {
    rm -rf libXext-1.3.4
    tar -xvf libXext-1.3.4.tar.gz
    cd libXext-1.3.4
    build_script_xcb_common
    cd ..
}

build_drm() {
    rm -rf libdrm-2.4.100
    tar -xvf libdrm-2.4.100.tar.gz
    cd libdrm-2.4.100
    build_script_xcb_common
    cd ..
}

build_xrandr() {
    rm -rf libXrandr-1.5.2
    tar -xvf libXrandr-1.5.2.tar.gz
    cd libXrandr-1.5.2
    build_script_xcb_common
    cd ..
}

build_xfixes() {
    rm -rf libXfixes-5.0.3
    tar -xvf libXfixes-5.0.3.tar.gz
    cd libXfixes-5.0.3
    build_script_xcb_common
    cd ..
}

build_xcomposite() {
    rm -rf libXcomposite-0.4.5
    tar -xvf libXcomposite-0.4.5.tar.gz
    cd libXcomposite-0.4.5
    build_script_xcb_common
    cd ..
}

build_xcursor() {
    rm -rf libXcursor-1.2.0
    tar -xvf libXcursor-1.2.0.tar.gz
    cd libXcursor-1.2.0
    build_script_xcb_common
    cd ..
}

build_xi() {
    rm -rf libXi-1.7.10
    tar -xvf libXi-1.7.10.tar.gz
    cd libXi-1.7.10
    build_script_xcb_common
    cd ..
}

build_xscrnsaver() {
    rm -rf libXScrnSaver-1.2.3
    tar -xvf libXScrnSaver-1.2.3.tar.gz
    cd libXScrnSaver-1.2.3
    build_script_xcb_common
    cd ..
}

build_xtst() {
    rm -rf libXtst-1.2.3
    tar -xvf libXtst-1.2.3.tar.gz
    cd libXtst-1.2.3
    build_script_xcb_common
    cd ..
}

build_xshmfence() {
    rm -rf libxshmfence-1.3
    tar -xvf libxshmfence-1.3.tar.gz
    cd libxshmfence-1.3
    build_script_xcb_common
    cd ..
}

build_xxf86vm() {
    rm -rf libXxf86vm-1.1.4
    tar -xvf libXxf86vm-1.1.4.tar.gz
    cd libXxf86vm-1.1.4
    build_script_xcb_common
    cd ..
}

build_xkeyboard() {
    rm -rf xkeyboard-config-2.30
    tar -xvf xkeyboard-config-2.30.tar.gz
    cd xkeyboard-config-2.30
    build_script_xcb_common
    cd ..
}

build_xkbcommon() {
    rm -rf libxkbcommon-1.4.0
    tar -xvf libxkbcommon-1.4.0.tar.xz
    cd libxkbcommon-1.4.0
    build_script_xkbcommon
    cd ..
}

build_ice() {
    rm -rf libICE-1.0.10
    tar -xvf libICE-1.0.10.tar.gz
    cd libICE-1.0.10
    build_script_xcb_common
    cd ..
}

build_sm() {
    rm -rf libSM-1.2.3
    tar -xvf libSM-1.2.3.tar.gz
    cd libSM-1.2.3
    build_script_xcb_common
    cd ..
}

build_x11() {
    rm -rf libX11-1.7.5
    tar -xvf libX11-1.7.5.tar.gz
    cd libX11-1.7.5
    build_script_x11
    cd ..
}

# glib
build_pcre() {
    rm -rf pcre-8.45
    tar -xvf pcre-8.45.tar.gz
    cd pcre-8.45
    build_script_xcb_common
    cd ..
}

build_zlib() {
    rm -rf zlib-1.2.11
    tar -xvf zlib-1.2.11.tar.gz
    cd zlib-1.2.11
    build_script_zlib
    cd ..
}

build_ffi() {
    rm -rf libffi-3.3
    tar -xvf libffi-3.3.tar.gz
    cd libffi-3.3
    build_script_xcb_common
    cd ..
}

build_glib() {
    rm -rf glib-2.61.3
    tar -xvf glib-2.61.3.tar.xz
    cd glib-2.61.3
    build_script_glib
    cd ..
}

# webengine
build_xkbfile() {
    rm -rf libxkbfile-1.1.0
    tar -xvf libxkbfile-1.1.0.tar.gz
    cd libxkbfile-1.1.0
    build_script_xcb_common
    cd ..
}

build_xdamage() {
    rm -rf libXdamage-1.1.5
    tar -xvf libXdamage-1.1.5.tar.gz
    cd libXdamage-1.1.5
    build_script_xcb_common
    cd ..
}

build_expat() {
    rm -rf expat-2.2.9
    tar -xvf expat-2.2.9.tar.gz
    cd expat-2.2.9
    build_script_xcb_common
    cd ..
}

build_sepol() {
    rm -rf libsepol-3.0
    tar -xvf libsepol-3.0.tar.gz
    cd libsepol-3.0
    build_script_selinux
    cd ..
}

build_selinux() {
    rm -rf libselinux-3.0
    tar -xvf libselinux-3.0.tar.gz
    cd libselinux-3.0
    build_script_selinux
    cd ..
}

build_dbus() {
    rm -rf dbus-1.13.6
    tar -xvf dbus-1.13.6.tar.gz
    cd dbus-1.13.6
    build_script_xcb_common
    cd ..
}

build_freetype() {
    rm -rf freetype-2.10.1
    tar -xvf freetype-2.10.1.tar.gz
    cd freetype-2.10.1
    build_script_freetype
    cd ..
}

build_xml2() {
    rm -rf libxml2-v2.9.9
    tar -xvf libxml2-v2.9.9.tar.gz
    cd libxml2-v2.9.9
    ./autogen.sh
    build_script_xml2
    cd ..
}

build_uuid() {
    rm -rf libuuid-1.0.3
    tar -xvf libuuid-1.0.3.tar.gz
    cd libuuid-1.0.3
    build_script_xcb_common
    cd ..
}

build_fontconfig() {
    rm -rf fontconfig-2.13.92
    tar -xvf fontconfig-2.13.92.tar.gz
    cd fontconfig-2.13.92
    build_script_xcb_common
    cd ..
}

build_sqlite3() {
    rm -rf sqlite-version-3.30.1
    tar -xvf version-3.30.1.tar.gz
    cd sqlite-version-3.30.1
    build_script_xcb_common
    cd ..
}

build_mesa() {
    rm -rf mesa-mesa-19.0.0
    tar -xvf mesa-mesa-19.0.0.tar.gz
    cd mesa-mesa-19.0.0
    build_script_mesa
    cd ..
}

build_icu() {
    rm -rf icu
    tar -xvf icu4c-65_1-src.tgz
    cd icu/source
    build_script_icu
    cd ../..
}

build_nodejs() {
    rm -rf node-v10.24.1
    tar -xvf node-v10.24.1.tar.gz
    cd node-v10.24.1
    build_script_nodejs
    cd ..
}

# openssl
build_openssl

# glib
build_pcre
build_zlib
build_ffi
build_sepol
build_selinux
build_glib

# x11
build_xtrans
build_xcb_proto
build_xorgproto
build_Xau
build_xcb
build_pthread
build_xcb_util
build_xcb_util_image
build_xcb_util_keysyms
build_xcb_util_renderutil
build_xcb_util_wm
build_util_macros
build_xkeyboard
build_drm
build_xshmfence
build_xkbcommon
build_ice
build_sm
build_x11

# webengine
build_xrender
build_xext
build_xrandr
build_xfixes
build_xcomposite
build_xcursor
build_xi
build_xscrnsaver
build_xtst
build_xxf86vm
build_xkbfile
build_xdamage
build_expat
build_dbus
build_freetype
build_xml2
build_uuid
build_fontconfig
build_sqlite3
build_mesa
build_icu
build_nodejs

2.5.3. nss交叉编译

webengine 模块需要用到 nss，nss 交叉编译比较麻烦，具体步骤参考linux交叉编译nss3,nspr-爱代码爱编程²。

以下列出需要用到的命令，下面脚本不能直接执行，以参考链接为准。

#!/bin/sh
MY_PREFIX=/usr/local
MY_PREFIX_CROSS=/aarch64

# build_init() {
#     rm -rf nss-3.50
#     tar -xvf nss-3.50-with-nspr-4.25.tar.gz
#     cd nss-3.50
#     patch -Np1 -i ../nss-3.50-standalone-1.patch
#     cp -rf nspr nspr_local
#     cp -rf nss nss_local
# }

build_script_nspr_local() {
    cd nspr_local

    sed -i '/^RELEASE/s|^|#|' pr/src/misc/Makefile.in
    sed -i 's|$(LIBRARY) ||' config/rules.mk

    ./configure \
        --with-pthreads \
        --enable-64bit \
        --with-mozilla

    make -j1 && make install
}

build_script_nspr() {
    cd nspr

    sed -i '/^RELEASE/s|^|#|' pr/src/misc/Makefile.in
    sed -i 's|$(LIBRARY) ||' config/rules.mk

    ./configure \
        --prefix=${MY_PREFIX_CROSS} \
        --host=aarch64-linux-gnu \
        --with-pthreads \
        --with-mozilla \
        --enable-64bit

    make -j1 && make install
    # cp ./nspr_local/config/nsinstall ./nspr/config/
}

build_script_nss_local() {
    cd nss_local

    make -j1 \
        BUILD_OPT=1 \
        NSPR_INCLUDE_DIR=${MY_PREFIX}/include/nspr \
        NSPR_LIB_DIR=${MY_PREFIX}/lib \
        USE_STATIC_RTL=1 \
        USE_SYSTEM_ZLIB=1 \
        ZLIB_LIBS=-lz \
        NSS_ENABLE_WERROR=0 \
        $([ -f ${MY_PREFIX}/include/sqlite3.h ] && echo NSS_USE_SYSTEM_SQLITE=1) \
        $([ $(uname -m) = x86_64 ] && echo USE_64=1)
}

build_script_nss() {
    cd nss

    export CC=/cross/gcc-linaro-5.4.1-2017.05-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu-gcc
    export CCC=/cross/gcc-linaro-5.4.1-2017.05-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu-g++
    export C_INCLUDE_PATH=${MY_PREFIX_CROSS}/include:$C_INCLUDE_PATH
    export LD_LIBRARY_PATH=${MY_PREFIX_CROSS}/lib:$LD_LIBRARY_PATH

    make -j1 \
        BUILD_OPT=1 \
        NSPR_INCLUDE_DIR=${MY_PREFIX_CROSS}/include/nspr \
        NSPR_LIB_DIR=${MY_PREFIX_CROSS}/lib \
        USE_STATIC_RTL=1 \
        USE_SYSTEM_ZLIB=1 \
        ZLIB_LIBS=-lz \
        NSS_ENABLE_WERROR=0 \
        $([ -f ${MY_PREFIX_CROSS}/include/sqlite3.h ] && echo NSS_USE_SYSTEM_SQLITE=1) \
        USE_64=1 \
        CROSS_COMPILE=1 \
        PREFIX=${MY_PREFIX_CROSS} \
        OS_TEST=aarch64

    cd ..
    # cp ./nss_local/coreconf/nsinstall/Linux3.10_x86_64_cc_glibc_PTH_64_OPT.OBJ/nsinstall ./nss/coreconf/nsinstall/Linux3.10_aarch64_glibc_PTH_64_OPT.OBJ/
}

install_nss() {
    cd ./dist/Linux3.10_aarch64_glibc_PTH_64_OPT.OBJ

    install -v -m755 lib/*.so ${MY_PREFIX_CROSS}/lib
    install -v -m644 lib/{*.chk,libcrmf.a} ${MY_PREFIX_CROSS}/lib
    install -v -m755 -d ${MY_PREFIX_CROSS}/include/nss
    cp -v -RL ../{public,private}/nss/* ${MY_PREFIX_CROSS}/include/nss
    install -v -m755 bin/{certutil,nss-config,pk12util} ${MY_PREFIX_CROSS}/bin
    install -v -m644 lib/pkgconfig/nss.pc ${MY_PREFIX_CROSS}/lib/pkgconfig
    
    cd ..
}

# 编译 nss
# build_init
build_script_nspr_local
build_script_nspr

build_script_nss_local
build_script_nss

install_nss

2.5.4. nodejs下载

nodejs 不用交叉编译，下载创建链接即可。

# 下载 nodejs
wget -c https://registry.npmmirror.com/-/binary/node/v10.24.1/node-v10.24.1-linux-x64.tar.gz
tar -xvf node-v10.24.1-linux-x64.tar.gz
mv node-v10.24.1-linux-x64 /usr/local/nodejs
# 建立node npm软链接
ln -s /usr/local/nodejs/bin/node /usr/local/bin
ln -s /usr/local/nodejs/bin/npm /usr/local/bin

2.5.5. 检查编译³

文件都放在 /cross/dependence

以下脚本是检查是否能被检索到。

#!/bin/bash
PRE_PATH=/aarch64

export PKG_CONFIG_PATH=${PRE_PATH}/lib/pkgconfig:${PRE_PATH}/share/pkgconfig

x11string="xrender,xcb-render,xcb-renderutil,xcb-shape,xcb-randr,xcb-xfixes,xcb-sync,xcb-shm,xcb-icccm,xcb-keysyms,xcb-image,xkbcommon,xkbcommon-x11,fontconfig,freetype2,xext,x11,xcb,x11-xcb,sm,ice,glib-2.0,xcb-xinerama"
x11array=(${x11string//,/ })

webstring="nss,libdrm,xcomposite,xcursor,xi,xrandr,xscrnsaver,xtst,xkbfile,expat,xdamage"
webarray=(${webstring//,/ })

allCount=0
successCount=0
failedStr=""

echo "X11依赖："
for var in ${x11array[@]}; do
    let allCount++
    modversion="$(pkg-config --modversion --silence-errors $var)"

    if [[ -n $modversion ]]; then
        let successCount++
        echo $var "库版本号" $modversion
    else
        failedStr=$failedStr$var,
        echo $var "未找到库！！！"
    fi
done

echo
echo "WebEngine依赖："
for var in ${webarray[@]}; do
    let allCount++
    modversion="$(pkg-config --modversion --silence-errors $var)"

    if [[ -n $modversion ]]; then
        let successCount++
        echo $var "库版本号" $modversion
    else
        failedStr=$failedStr$var,
        echo $var "未找到库！！！"
    fi
done

echo
echo "成功 / 总数："$successCount/$allCount
if [ $allCount -ne $successCount ]; then
    echo "未找到的库 ："$failedStr
fi

运行上述脚本全部找到应该就没问题。

3. 编译Qt

下载地址：https://download.qt.io/archive/qt/5.15/5.15.2/single/

首先解压，以后所有操作都在 /cross/qt-everywhere-src-5.15.2 中操作

tar -xvf qt-everywhere-src-5.15.2.tar.xz
cd qt-everywhere-src-5.15.2

3.1. 环境配置

因为要配置 sysroot，所有查找路径都会加上 ${sysroot} 前缀，所以需要把上述所有依赖安装路径 aarch64 文件夹拷贝到 sysroot-aarch64 目录下。

将原来 aarch64 改名，不然 qt 后续编译 webengine 本地链接 nss 会找到这里面。

# 移动和改名
cp -rf /aarch64 /sysroot-aarch64/
mv /aarch64 /aarch641

# 或者直接移动
mv /aarch64/ /sysroot-aarch64/

不知道为什么 webengine 模块不能识别编译脚本中的 export，所以需要在 /etc/profile 设置

vim /etc/profile

# webengine
MY_SYSROOT=/sysroot-aarch64
MY_PREFIX=${MY_SYSROOT}/aarch64
export PKG_CONFIG_PATH=${MY_PREFIX}/lib/pkgconfig:${MY_PREFIX}/share/pkgconfig
export CPLUS_INCLUDE_PATH=$CPLUS_INCLUDE_PATH:${MY_PREFIX}/include
export CPLUS_INCLUDE_PATH=$CPLUS_INCLUDE_PATH:${MY_PREFIX}/include/nss
export CPLUS_INCLUDE_PATH=$CPLUS_INCLUDE_PATH:${MY_PREFIX}/include/nspr
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:${MY_PREFIX}/lib

source /etc/profile

3.2. 添加交叉编译平台

所有默认的交叉编译平台配置文件在 /qt-everywhere-src-5.15.2/qtbase/mkspecs，为了不影响文件，可以复制 linux-aarch64-gnu-g++ 为 aarch64-linux-gnu-g++ 作为我们的配置文件。修改 qmake.conf 文件如下：

#
# qmake configuration for building with aarch64-linux-gnu-g++
#

MAKEFILE_GENERATOR      = UNIX
CONFIG                 += incremental
QMAKE_INCREMENTAL_STYLE = sublib

include(../common/linux.conf)
include(../common/gcc-base-unix.conf)
include(../common/g++-unix.conf)

QMAKE_INCDIR_POST += \ 
    $$[QT_SYSROOT]/usr/include \
    $$[QT_SYSROOT]/aarch64/include

QMAKE_RPATHLINKDIR_POST += \ 
    $$[QT_SYSROOT]/usr/lib \
    $$[QT_SYSROOT]/aarch64/lib \
    $$[QT_SYSROOT]/aarch64/lib64

# modifications to g++.conf
QMAKE_CC                = aarch64-linux-gnu-gcc
QMAKE_CXX               = aarch64-linux-gnu-g++
QMAKE_LINK              = aarch64-linux-gnu-g++
QMAKE_LINK_SHLIB        = aarch64-linux-gnu-g++

# modifications to linux.conf
QMAKE_AR                = aarch64-linux-gnu-ar cqs
QMAKE_OBJCOPY           = aarch64-linux-gnu-objcopy
QMAKE_NM                = aarch64-linux-gnu-nm -P
QMAKE_STRIP             = aarch64-linux-gnu-strip
load(qt_config)

3.3. 编译脚本

为了不污染源代码，所以脚本 aarch64_qt.sh 创建 build 文件夹进行编译。

#!/bin/sh
mkdir build
cd build

MY_SYSROOT=/sysroot-aarch64
MY_PREFIX=${MY_SYSROOT}/aarch64
MY_XPLATFORM=aarch64-linux-gnu-g++

export PKG_CONFIG_LIBDIR=${MY_PREFIX}/lib/pkgconfig:${MY_PREFIX}/share/pkgconfig
export PKG_CONFIG_PATH=${MY_PREFIX}/lib/pkgconfig:${MY_PREFIX}/share/pkgconfig

../configure \
    -prefix /opt/qt5.15.2 \
    -confirm-license \
    -opensource \
    -release \
    -sysroot ${MY_SYSROOT} \
    -pkg-config \
    -xplatform ${MY_XPLATFORM} \
    -I${MY_PREFIX}/include \
    -L${MY_PREFIX}/lib \
    -make libs \
    -nomake examples \
    -nomake tools \
    -nomake tests \
    -xcb \
    -dbus \
    -fontconfig

cd ..

执行命令 ./aarch64_qt.sh，看到以下情况即是包含 OpenSSL X11 QWebEngine，就可以开始编译。

cd build
# 编译
gmake -j4
# 安装，路径是 /sysroot-aarch64/opt/qt5.15.2
gmake install

3.4. 问题

出现找不到模块，请仔细查看 config.cache 和 config.log 排查。

以下是编译 qt5.15.2 源码时源码出现的问题

3.4.1. chromium/third_party/libjpeg_turbo⁴

../../../../../qtwebengine/src/3rdparty/chromium/third_party/libjpeg_turbo/simd/arm/common/jidctint-neon.c: In function ‘jsimd_idct_islow_neon’:
../../../../../qtwebengine/src/3rdparty/chromium/third_party/libjpeg_turbo/simd/arm/common/jidctint-neon.c:217:30: error: incompatible types when initializing type ‘int64_t {aka long int}’ using type ‘int64x1_t’
   int64_t bitmap_rows_4567 = vreinterpret_s64_s16(bitmap);
                              ^
../../../../../qtwebengine/src/3rdparty/chromium/third_party/libjpeg_turbo/simd/arm/common/jidctint-neon.c:223:30: error: incompatible types when initializing type ‘int64_t {aka long int}’ using type ‘int64x1_t’
     int64_t left_ac_bitmap = vreinterpret_s64_s16(bitmap);
                              ^
../../../../../qtwebengine/src/3rdparty/chromium/third_party/libjpeg_turbo/simd/arm/common/jidctint-neon.c:227:30: warning: missing braces around initializer [-Wmissing-braces]
       int16x4x4_t quadrant = { dcval, dcval, dcval, dcval };
                              ^

根据提示显示类型不兼容，进行修改 jidctfst-neon.c jidctint-neon.c jidctred-neon.c 这三个文件

// jidctfst-neon.c
// 87
int64_t left_ac_bitmap = vreinterpret_s64_s16(vget_low_s16(bitmap));
int64_t right_ac_bitmap = vreinterpret_s64_s16(vget_high_s16(bitmap));
// 改为
int64_t left_ac_bitmap = vget_lane_s64(vreinterpret_s64_s16(vget_low_s16(bitmap)), 0);
int64_t right_ac_bitmap = vget_lane_s64(vreinterpret_s64_s16(vget_high_s16(bitmap)), 0);
// 407
  uint8x16_t cols_01 = vreinterpretq_u8_s8(
                            vaddq_s8(cols_01_s8, vdupq_n_u8(CENTERJSAMPLE)));
  uint8x16_t cols_45 = vreinterpretq_u8_s8(
                            vaddq_s8(cols_45_s8, vdupq_n_u8(CENTERJSAMPLE)));
  uint8x16_t cols_23 = vreinterpretq_u8_s8(
                            vaddq_s8(cols_23_s8, vdupq_n_u8(CENTERJSAMPLE)));
  uint8x16_t cols_67 = vreinterpretq_u8_s8(
                            vaddq_s8(cols_67_s8, vdupq_n_u8(CENTERJSAMPLE)));
// 改为
  uint8x16_t cols_01 = vreinterpretq_u8_s8(
                            vaddq_s8(cols_01_s8, (int8x16_t)vdupq_n_u8(CENTERJSAMPLE)));
  uint8x16_t cols_45 = vreinterpretq_u8_s8(
                            vaddq_s8(cols_45_s8, (int8x16_t)vdupq_n_u8(CENTERJSAMPLE)));
  uint8x16_t cols_23 = vreinterpretq_u8_s8(
                            vaddq_s8(cols_23_s8, (int8x16_t)vdupq_n_u8(CENTERJSAMPLE)));
  uint8x16_t cols_67 = vreinterpretq_u8_s8(
                            vaddq_s8(cols_67_s8, (int8x16_t)vdupq_n_u8(CENTERJSAMPLE)));

// jidctint-neon.c
// 217 223 269 273 280
int64_t bitmap_rows_4567 = vreinterpret_s64_s16(bitmap);
int64_t left_ac_bitmap = vreinterpret_s64_s16(bitmap);
bitmap_rows_4567 = vreinterpret_s64_s16(bitmap);
int64_t right_ac_bitmap = vreinterpret_s64_s16(bitmap);
right_ac_dc_bitmap = vreinterpret_s64_s16(bitmap);
// 改为
int64_t bitmap_rows_4567 = vget_lane_s64(vreinterpret_s64_s16(bitmap),0);
int64_t left_ac_bitmap = vget_lane_s64(vreinterpret_s64_s16(bitmap),0);
bitmap_rows_4567 = vget_lane_s64(vreinterpret_s64_s16(bitmap),0);
int64_t right_ac_bitmap = vget_lane_s64(vreinterpret_s64_s16(bitmap),0);
right_ac_dc_bitmap = vget_lane_s64(vreinterpret_s64_s16(bitmap),0);
// 350 这个是交叉编译低版本没有，64位直接使用32位同样效果
const int16x4x3_t consts = vld1_s16_x3(jsimd_idct_islow_neon_consts);

// jidctred-neon.c
// 220
int64_t left_ac_bitmap = vreinterpret_s64_s16(vget_low_s16(bitmap));
int64_t right_ac_bitmap = vreinterpret_s64_s16(vget_high_s16(bitmap));
// 改为
int64_t left_ac_bitmap = vget_lane_s64(vreinterpret_s64_s16(vget_low_s16(bitmap)),0);
int64_t right_ac_bitmap = vget_lane_s64(vreinterpret_s64_s16(vget_low_s16(bitmap)),0);
// 225 这个是交叉编译低版本没有，64位直接使用32位同样效果
const int16x4x3_t consts = vld1_s16_x3(jsimd_idct_4x4_neon_consts);

3.4.2. chromium/v8⁵

../../../../../qtwebengine/src/3rdparty/chromium/v8/src/codegen/arm64/macro-assembler-arm64.h:1423:25: error: use of deleted function ‘v8::internal::TurboAssembler::TurboAssembler(v8::internal::Isolate*, v8::internal::CodeObjectRequired, std::unique_ptr<v8::internal::AssemblerBuffer>)’
../../../../../qtwebengine/src/3rdparty/chromium/v8/src/codegen/arm64/macro-assembler-arm64.h:150:29: note: ‘v8::internal::TurboAssembler::TurboAssembler(v8::internal::Isolate*, v8::internal::CodeObjectRequired, std::unique_ptr<v8::internal::AssemblerBuffer>)’ is implicitly deleted because the default definition would be ill-formed:
   using TurboAssemblerBase::TurboAssemblerBase;
                             ^
../../../../../qtwebengine/src/3rdparty/chromium/v8/src/codegen/arm64/macro-assembler-arm64.h:150:29: error: no matching function for call to ‘v8::internal::CPURegList::CPURegList()’
In file included from ../../../../../qtwebengine/src/3rdparty/chromium/v8/src/codegen/register-arch.h:16:0,
                 from ../../../../../qtwebengine/src/3rdparty/chromium/v8/src/deoptimizer/deoptimizer.h:13,
                 from ../../../../../qtwebengine/src/3rdparty/chromium/v8/../../../../../qtwebengine/src/3rdparty/chromium/v8/src/deoptimizer/deoptimizer.cc:5,
                 from gen/v8/v8_base_without_compiler_jumbo_13.cc:6:
../../../../../qtwebengine/src/3rdparty/chromium/v8/src/codegen/arm64/register-arm64.h:539:3: note: candidate: v8::internal::CPURegList::CPURegList(v8::internal::CPURegister::RegisterType, int, int, int)
   CPURegList(CPURegister::RegisterType type, int size, int first_reg,

这是头文件中缺少 CPURegList 默认构造函数，在register-arm64.h 的 533 行添加以下代码即可

// 533
  CPURegList() {
    DCHECK(is_valid());
  }

4. 验证

经过上述步骤就能获得 arm64 版本的 qt5.15.2，接下来是验证是否可以将程序编译成 arm64 版本，主要验证 webengine 模块功能。

下载安装 qt-opensource-linux-x64-5.14.2.run 最后一个离线安装版本：https://download.qt.io/archive/qt/5.14/5.14.2/。

添加交叉编译版本 qmake 路径，不然不能加载

vim /etc/profile

# qmake-aarch64
export PATH=$PATH:/sysroot-aarch64/opt/qt5.15.2/bin

source /etc/profile

4.1. 添加构建环境

在工具——选项——Kits——Qt Versions中点击添加，选择交叉编译生成的 qmake，配置了环境变量交叉编译器一般会自动加入。

然后在构建套件中添加一个交叉编译 arm64 版本，参数如下：

使用 simplebrowser.pro 示例进行测试。可以看到最终编译结果是 arm64 版本。

5. 总结

5.1. /etc/profile

最后 /etc/profile 文件如下：

# gcc-aarch64
export PATH=$PATH:/cross/gcc-linaro-5.4.1-2017.05-x86_64_aarch64-linux-gnu/bin
# gcc，放前面覆盖原始 gcc 路径
export PATH=/usr/local/gcc/bin:$PATH
export LD_LIBRARY_PATH=/usr/local/gcc/lib64:$LD_LIBRARY_PATH

# webengine
MY_SYSROOT=/sysroot-aarch64
MY_PREFIX=${MY_SYSROOT}/aarch64
export PKG_CONFIG_PATH=${MY_PREFIX}/lib/pkgconfig:${MY_PREFIX}/share/pkgconfig
export CPLUS_INCLUDE_PATH=$CPLUS_INCLUDE_PATH:${MY_PREFIX}/include
export CPLUS_INCLUDE_PATH=$CPLUS_INCLUDE_PATH:${MY_PREFIX}/include/nss
export CPLUS_INCLUDE_PATH=$CPLUS_INCLUDE_PATH:${MY_PREFIX}/include/nspr
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:${MY_PREFIX}/lib

# qmake-aarch64
export PATH=$PATH:${MY_SYSROOT}/opt/qt5.15.2/bin

参考

1. 野火交叉编译Qt库(Qt5) ↩︎

2. linux交叉编译nss3,nspr-爱代码爱编程 ↩︎

3. Aarch64(arm64)下编译QT5.15.5（xcb、webengine）+QTCreator4.13.3 ↩︎

4. qt5.15.2 交叉编译总结 ↩︎

5. Can’t compile qtwebengine 5.15.0 and 5.14.1 · Issue #341 ↩︎