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cef for loongarch64(交叉编译)

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  • 6723

cef 源码编译（交叉编译）

  • 编译系统：debian 12
  • 编译平台：x86_64
  • 目标平台：loongarch64

1.制作cef所需交叉编译工具链

1.1.制作sysroot

mkdir -p /opt/loongarch64/sysroot
mount clfs-loongarch64-system-x.x-sysroot.squashfs /mnt
cp -raf /mnt /opt/loongarch64/sysroot/
umount /mnt
  • sysroot保留以下目录结构：
.
|-- lib -> usr/lib
|-- lib64 -> usr/lib64
`-- usr
    |-- include
    |-- lib
    |-- lib64
    `-- share
        |
        `-- pkgconfig

1.2.编译llvm-project (clang version 19.1.3git (https://github.com/llvm/llvm-project.git ab51eccf88f5321e7c60591c5546b254b6afab99))

git clone https://github.com/llvm/llvm-project.git
cd llvm-project
git checkout ab51eccf88f5321e7c60591c5546b254b6afab99
此版本需要打上一个修复补丁(https://github.com/llvm/llvm-project/commit/6377ae46a83e52fe1850a42ce8e1ee3e840243ba)
cmake -S llvm -B build -G "Ninja" -DCMAKE_BUILD_TYPE=Release -DLLVM_ENABLE_PROJECTS="clang;lld" -DCMAKE_INSTALL_PREFIX=/opt/loongarch64/llvm-19
cd build
ninja && ninja install
  • 继续在llvm-project目录下编译compiler-rt:
mkdir build-compiler-rt
cd build-compiler-rt
cmake ../compiler-rt/ -G Ninja -DCMAKE_AR=/opt/loongarch64/llvm-19/bin/llvm-ar -DCMAKE_ASM_COMPILER_TARGET=loongarch64-unknown-linux-gnu -DCMAKE_ASM_FLAGS="-mcmodel=medium -mabi=lp64d --target=loongarch64-linux-gnu --sysroot=/opt/loongarch64/sysroot" -DCMAKE_C_COMPILER=/opt/loongarch64/llvm-19/bin/clang -DCMAKE_C_COMPILER_TARGET=loongarch64-unknown-linux-gnu -DCMAKE_C_FLAGS="-mcmodel=medium -mabi=lp64d --target=loongarch64-linux-gnu --sysroot=/opt/loongarch64/sysroot" -DCMAKE_EXE_LINKER_FLAGS="-fuse-ld=lld" -DLLVM_ENABLE_PER_TARGET_RUNTIME_DIR=ON -DCMAKE_NM=/opt/loongarch64/llvm-19/bin/llvm-nm -DCMAKE_RANLIB=/opt/loongarch64/llvm-19/bin/llvm-ranlib -DCOMPILER_RT_BUILD_BUILTINS=ON  -DCOMPILER_RT_BUILD_LIBFUZZER=OFF -DCOMPILER_RT_BUILD_MEMPROF=OFF -DCOMPILER_RT_BUILD_PROFILE=ON -DCOMPILER_RT_BUILD_SANITIZERS=OFF -DCOMPILER_RT_BUILD_XRAY=OFF -DCOMPILER_RT_DEFAULT_TARGET_ONLY=ON -DLLVM_CMAKE_DIR=/opt/loongarch64/llvm-19 -DCMAKE_INSTALL_PREFIX=/opt/loongarch64/llvm-19/lib/clang/19
rm ./* -rf
  • 编译x64的compiler-rt:
cmake ../compiler-rt/ -G Ninja -DCMAKE_AR=/opt/loongarch64/llvm-19/bin/llvm-ar -DCMAKE_ASM_COMPILER_TARGET=x86_64-unknown-linux-gnu -DCMAKE_ASM_FLAGS="" -DCMAKE_C_COMPILER=/opt/loongarch64/llvm-19/bin/clang -DCMAKE_C_COMPILER_TARGET=x86_64-unknown-linux-gnu -DCMAKE_C_FLAGS="" -DLLVM_ENABLE_PER_TARGET_RUNTIME_DIR=ON -DCMAKE_NM=/opt/loongarch64/llvm-19/bin/llvm-nm -DCMAKE_RANLIB=/opt/loongarch64/llvm-19/bin/llvm-ranlib -DCMAKE_EXE_LINKER_FLAGS="-fuse-ld=lld" -DCOMPILER_RT_BUILD_BUILTINS=ON  -DCOMPILER_RT_BUILD_LIBFUZZER=OFF -DCOMPILER_RT_BUILD_MEMPROF=OFF -DCOMPILER_RT_BUILD_PROFILE=ON -DCOMPILER_RT_BUILD_SANITIZERS=ON -DCOMPILER_RT_BUILD_XRAY=OFF -DCOMPILER_RT_DEFAULT_TARGET_ONLY=ON -DLLVM_CMAKE_DIR=/opt/loongarch64/llvm-19 -DCMAKE_INSTALL_PREFIX=/opt/loongarch64/llvm-19/lib/clang/19
ninja && ninja install

2.代码拉取

  • 代码目录结构：
.
└── code
    ├── automate
    ├── cef
    ├── chromium
    └── depot_tools

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=6723 --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 treat_warnings_as_errors=false dcheck_always_on=false use_gold=false use_system_libffi=true clang_version=19 clang_base_path="/opt/loongarch64/llvm-19" 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_bullseye_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/