cef for loongarch64(交叉编译)

• cef社区项目地址 - https://bitbucket.org/chromiumembedded/cef

目前支持分支

• 4844

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cef 源码编译（交叉编译）

• 编译平台：x86_64
• 目标平台：loongarch64

1.制作cef所需交叉编译工具链

• 编译器：loongson仓库的binutils-gdb和llvm-project
• sysroot：loongson仓库的build-tools中的CLFS（loongarch64-clfs-system-x.x.tar.bz2）

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1.1.编译llvm-project

git clone https://github.com/loongson/llvm-project.git
cd llvm-project
cmake -S llvm -B build -G "Ninja" -DCMAKE_BUILD_TYPE=Release -DLLVM_ENABLE_PROJECTS="clang" -DCMAKE_INSTALL_PREFIX=/opt/loongarch64/toolchain -DLLVM_DEFAULT_TARGET_TRIPLE="x86_64-linux-gnu;loongarch64-linux-gnu"
cd build
ninja && ninja install

1.2.编译binutils-gdb

git clone https://github.com/loongson/binutils-gdb.git
cd binutils-gdb
mkdir build
cd build
../configure --prefix=/opt/loongarch64/toolchain --target=x86_64-linux-gnu --disable-nls --enable-shared --enable-64-bit-bfd --disable-werror
make && make install

rm ./* -rf
../configure --prefix=/opt/loongarch64/toolchain --target=loongarch64-linux-gnu --with-sysroot --disable-nls --enable-shared --enable-64-bit-bfd --disable-werror
make && make install

1.3.制作sysroot

mkdir -p /opt/loongarch64/sysroot
tar xvf loongarch64-clfs-system-x.x.tar.bz2 -C /opt/loongarch64/sysroot

1.4.将交叉编译工具链加入环境变量

export PATH=$PATH:/opt/loongarch64/toolchain/bin

2.代码拉取

• 代码目录结构：

.
└── code
    ├── automate
    ├── cef
    ├── chromium
    └── depot_tools

• 在automate目录中下载代码拉取脚本automate-git.py

automate/
└── automate-git.py

• 获取源码及依赖(在automate目录下执行)

python automate-git.py --url=https://github.com/loongson/cef.git --download-dir=/path/to/code --depot-tools-dir=/path/to/code/depot_tools --branch=4844 --no-build --no-distrib

3.编译cef

3.1.将depot_tools加入环境变量

export PATH=$PATH:/path/to/code/depot_tools

3.2.生成编译工程文件

cd /path/to/code/chromium/src/cef
GN_DEFINES='target_cpu="loong64" clang_use_chrome_plugins=false enable_swiftshader=false angle_enable_swiftshader=false enable_swiftshader_vulkan=false treat_warnings_as_errors=false dcheck_always_on=false use_gold=false use_lld=false clang_base_path="/opt/loongarch64/toolchain" target_sysroot="/opt/loongarch64/sysroot"' ./cef_create_projects.sh

• 也可以将CLFS解压到/path/to/code/chromium/src/build/linux/debian_sid_loong64-sysroot下，无需在GN_DEFINES中设置target_sysroot.

3.3.执行编译

cd /path/to/code/chromium/src
ninja -C out/Release cef chrome_sandbox
ninja -C out/Debug cef chrome_sandbox

3.4.cef打包

cd /path/to/code/chromium/cef
python tools/make_distrib.py --ninja-build --loong64-build --output-dir /path/to/