本文写于 2020 年初，完成 armv8 下交叉编译 webengine，备份转载于此 原文链接
我的平台：On Windows10 WSL2 Debian
（注：Ubuntu <= 16.04 会出现 libclang < 3.8 的问题）
下载源码
为避免网络问题，先安装一个下载工具，使用aria2可以断点继续下载
sudo apt install aria2然后
cd 到一个工作目录Qt 5.12.5 源码
aria2c https://mirrors.tuna.tsinghua.edu.cn/qt/official_releases/qt/5.12/5.12.5/single/qt-everywhere-src-5.12.5.tar.xz
tar xf qt-everywhere-src-5.12.5.tar.xz交叉编译工具 Linaro GCC
aria2c https://releases.linaro.org/components/toolchain/binaries/latest-5/aarch64-linux-gnu/gcc-linaro-5.5.0-2017.10-x86_64_aarch64-linux-gnu.tar.xz
tar xf gcc-linaro-5.5.0-2017.10-x86_64_aarch64-linux-gnu.tar.xz在目标平台安装依赖 库
sudo apt-get install '.*libxcb.*' libxrender-dev libxi-dev \
libfontconfig1-dev libudev-dev libxkbcommon-dev \
libxkbcommon-x11-dev libc6-dev-arm64-cross libnss3-dev libicu-dev \
libdbus-1-devGLES 和 EGL
mkdir /home/nvidia/GLES
cd /home/nvidia/GLES
apt-get download libgles2-mesa-dev
ar x libgles2*.deb
tar -xvf data.tar.xz
mkdir /home/nvidia/EGL
cd /home/nvidia/EGL
apt-get download libegl1-mesa-dev
ar x libegl1*.deb
tar -xvf data.tar.xz
cd /home/nvidia/GLES/usr/include
sudo cp -r GLES2 GLES3 /usr/include
cd /home/nvidia/EGL/usr/include
sudo cp -r EGL KHR /usr/include在本机安装依赖
sudo apt-get install -y 'libxcb.*' \
libx11-xcb-dev libglu1-mesa-dev \
libxrender-dev libxi-dev libinput* \
mtdev* mesa-utils \
mesa-utils-extra libgles2-mesa-dev ninja-build \
git rsync pkg-config gcc g++ ps:
以上依赖可能不全，如果 confugre 后提示 xxx 找不到，例如 xxx 找不到从目标平台拷贝依赖 这里的 ip 换成自己的 ip
通常可以直接 apt install libxxx-dev
有的库可能带有版本号，例如 libnss3-dev,可以使用 apt search xxx 搜索
安装后重新来一遍下面的全部内容
rsync -avz -e ssh nvidia@192.168.12.232:/lib/aarch64-linux-gnu lib
rsync -avz -e ssh nvidia@192.168.12.232:/usr/include usr
rsync -avz -e ssh nvidia@192.168.12.232:/usr/lib usr
rsync -avz -e ssh nvidia@192.168.12.232:/usr/libaarch64-linux-gnu usr
rsync -avz -e ssh nvidia@192.168.12.232:/usr/aarch64-linux-gnu usr因为有一些依赖实际上是一个symbol link，所以要替换路径
wget https://raw.githubusercontent.com/riscv/riscv-poky/master/scripts/sysroot-relativelinks.py
chmod +x sysroot-relativelinks.py
./sysroot-relativelinks.py PATH_TO_YOUR_DIR如果链接不到
raw.githubusercontent.com建一个python脚本mkdir sysroot-relativelinks.py && chomod +x sysroot-relativelinks.py && vim sysroot-relativelinks.py:#!/usr/bin/env python
import sys
import os# Take a sysroot directory and turn all the abolute symlinks and turn them into
# relative ones such that the sysroot is usable within another system.if len(sys.argv) != 2:
print("Usage is " + sys.argv[0] + "")
sys.exit(1)topdir = sys.argv[1]
topdir = os.path.abspath(topdir)def handlelink(filep, subdir):
link = os.readlink(filep)
if link[0] != "/":
return
if link.startswith(topdir):
return
#print("Replacing %s with %s for %s" % (link, topdir+link, filep))
print("Replacing %s with %s for %s" % (link, os.path.relpath(topdir+link, subdir), filep))
os.unlink(filep)
os.symlink(os.path.relpath(topdir+link, subdir), filep)for subdir, dirs, files in os.walk(topdir):
for f in files:
filep = os.path.join(subdir, f)
if os.path.islink(filep):
#print("Considering %s" % filep)
handlelink(filep, subdir) 运行
./sysroot-relativelinks.py PATH_TO_YOUR_DIR还要替换一个.a的库
【交叉编译 Qt5 armv8(aarch64) with WebEngine - NVIDIA JETSON TX2】
ln -sf $PWD/usr/aarch64-linux-gnu/lib/libm.a $PWD/usr/lib/aarch64-linux-gnu/libm.a编译
修改Qt make时include和lib的查找顺序
vim qt-everywhere-src-5.12.5/qtbase/mkspecs/devices/linux-jetson-tx1-g++/qmake.conf注释掉 /usr/include
QMAKE_INCDIR_POST += \
#$$[QT_SYSROOT]/usr/include \
$$[QT_SYSROOT]/usr/include/aarch64-linux-gnu调整LIBDIR和RPATHLIBKDIR的顺序，把/usr/lib/aarch64开头的放到/usr/lib的前面
QMAKE_LIBDIR_POST += \
$$[QT_SYSROOT]/usr/lib/aarch64-linux-gnu \
$$[QT_SYSROOT]/usr/lib \
$$[QT_SYSROOT]/lib/aarch64-linux-gnuQMAKE_RPATHLINKDIR_POST += \
$$[QT_SYSROOT]/usr/lib/aarch64-linux-gnu/tegra \
$$[QT_SYSROOT]/usr/lib/aarch64-linux-gnu \
$$[QT_SYSROOT]/usr/lib \
$$[QT_SYSROOT]/lib/aarch64-linux-gnu替换下面的
CROSS_COMPILE 路径为自己的gcc-linaro路径prefix为安装路径(这个目录是使用交叉编译后的程序自动寻找的QT_DIR目录，当然会被环境变量覆盖)
extprefix为编译后目标主机 Qt 的路径
hostprefix为编译出来的交叉编译工具的路径
sysroot 为刚刚同步库文件的目录
cd qt-everywhere-src-5.12.5
./configure -shared -c++std c++14 \
-opensource -release --confirm-license -pkg-config \
-no-use-gold-linker \
-device linux-jetson-tx1-g++ \
-device-option CROSS_COMPILE=/home/linger/crossbuild/gcc-linaro-5.5.0-2017.10-x86_64_aarch64-linux-gnu/bin/aarch64-linux-gnu- \
-sysroot /home/linger/crossbuild \
-nomake examples -nomake tests \
-prefix /home/linger/crossbuild/JetsonTX2/qt5 \
-extprefix /home/linger/crossbuild/JetsonTX2/qt5 \
-hostprefix /home/linger/crossbuild/JetsonTX2/qt5-host \
-opengl es2 \
-pch \
-skip qtwayland \
-skip qtscript \
-skip qtandroidextras \
-skip qtdoc \
-skip qtremoteobjects \
-skip qtlocation \
-make libs \
-no-gbm \
-no-glib \
-qt-libpng \
-qt-libjpeg \
-qt-harfbuzz \
-qt-freetype \
-qt-xcbconfig完成后应没有warning和error，如果有依赖问题安装好依赖后删除config.cache重新configure
如果提示dbus有问题，在确认安装好libdbus-1-dev后编译安装 ps:
修改DEPS/usr/lib/aarch64-linux-gnu/pkgconfig/dbus-1.pc
在Libs后面添加-lpthread -lsystemd
编译前确保(
free -m)自己的内存+swap 大于 16G, 否则会在编译 chrominm 时挂掉Linux swapfile 10G, count为大小, 目录位置没有限制，btrfs在kernel 5.0前不支持native swap
cd /var
sudo mkdir swap
sudo dd if=/dev/zero of=swapfile bs=1024 count=1024000
sudo mkswap swapfile
# 开启
sudo swapon /var/swapfile
# 关闭
sudo swapoff /var/swapfile编译
make -j4
make install如果编译过程中提示找不到 gn
# 需要代理：
git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git
# 镜像：
git clone https://source.codeaurora.org/quic/lc/chromium/tools/depot_tools
export PATH=$PATH:PATH_TO_YOUR_depot_tools安装
cd JetsonTX2
scp -r qt5 nvidia@192.168.12.232:/usr/local添加环境变量
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/qt5/lib
export QT_PLUGIN_PATH=/usr/local/qt5/plugins
export QML_IMPORT_PATH=/usr/local/qt5/qml
export QML2_IMPORT_PATH=/usr/local/qt5/qml
export QT5_DIR=/usr/local/qt5编译带 WebEngine 的程序需要把 webegnineprocess 和依赖带到程序目录下
qt-everywhere-src-5.12.5/qtwebengine/src/core/release下的qtwebengine_locales文件夹、qtwebengine_resources_开头的.pak文件、icudtl.dat如果提示：
ERROR:zygote_host_impl_linux.cc(88)] Running as root without --no-sandbox is not supported. See https://crbug.com/638180.切换到非root用户或禁用 Sandbox：
export QTWEBENGINE_DISABLE_SANDBOX=1参考链接：
- QtWebBrowser fails to launch with QtLauncher Demo
- Cross-Compile the Qt Libraries for Nvidia? Jetson TX2 and Set the QtCreator Environment
- Windows下定制编译QtWebEngine
- https://github.com/riscv/riscv-poky
- https://doc.qt.io/qt-5/configure-options.html
- https://forum.qt.io/topic/99978/a-suitable-version-of-nss-could-not-be-found-cross-compile-raspberry-pi3-qt5-10-1
