1. Chromium Souce Code Download
1.1 download source code
1> 方法一
# 获得所有发布tag的信息。
git fetch --tags
# 根据37.0.2062.103版本建立一个你自己的分支
git checkout -b your_release_branch 37.0.2062.103
// 同步所有相关工程代码
gclient sync --with_branch_heads --jobs 16
2>方法2
.gclient
solutions = [
{
"managed": True,
"name": "src",
"url": "https://chromium.googlesource.com/chromium/src.git@41.0.2272.76",
"custom_deps": {
"src/content/test/data/layout_tests/LayoutTests": None,
"src/chrome/tools/test/reference_build/chrome_win": None,
"src/chrome_frame/tools/test/reference_build/chrome_win":None,
"src/chrome/tools/test/reference_build/chrome_linux":None,
"src/chrome/tools/test/reference_build/chrome_mac": None,
"src/third_party/hunspell_dictionaries": None,
},
"deps_file": ".DEPS.git",
"safesync_url": "",
},
]
target_os = ['android']
然后
gclient
sync --with_branch_heads --jobs 16
1.2 配置gyp
~/chromium$ echo "{ 'GYP_DEFINES': 'OS=android', }"> chromium.gyp_env
~/chromium$ gclient runhooks
1.3 安装jdk
1.4 build
~/chormium$ . build/android/envsetup.sh // 配置环境
~/chromium$ android_gyp //在out目录下生成*.ninja文件，会读取环境变量GYP_DEFINES以确定platform
// chromium39推荐使用./build/gyp_chromium来代替android_gyp
~/chromium$ ninja -C out/Release content_shell_apk
如果GYP_DEFINES设置不正确，会产生错误ninja: error: unknown target 'content_shell_apk', did you mean 'content_shell_pak'?
2. Build
http://code.google.com/p/chromium/wiki/LinuxBuildInstructions
./build/gyp_chromium -Dflag1=value1 -Dflag2=value2 // create 'out' folder and makefiles
ninja -C out/Release chrome
// ninja -C out/Debug chrome // 4G内存 4Gswap 编译了大概有3个小时
目前能成功编译，但是运行crash，sanbox问题。待解。。。
3. Debug Render进程
3.1 调试browser进程
gdb out/Debug/chrome // 只能调试browser进程代码，即只有browse代码的断点能停住
3.2 调试render进程
3.2.1 先运行chrome
./out/Debug/chrome
3.2.2 查看render进程id
pstree -ap | grep chrome
返回结果如下
| |-bash(6496)---chrome(7043)-+-chrome(7044)
| | |-chrome(7045)-+-chrome(7076)-+-{chrome}(7077)
| | | | |-{chrome}(7078)
| | | | `-{chrome}(7128)
7076 就是render进程id
3.3.3 运行gdb 并attach到render进程id （需要root 运行gdb，否则attach失败）
$su
#gdb
(gdb) attach 7076
Attaching to process 7076
Reading symbols from /home/xxx/work/chrome/google/src/out/Debug/chrome...done.
(gdb) b WebCore::ResourceLoader::didReceiveResponse
Breakpoint 1 at 0x7f67077c6ea6: file ../../third_party/WebKit/Source/core/loader/ResourceLoader.cpp, line 317.
(gdb) c
//刷新界面后，断点停住，可用bt来查看callstack
(gdb) bt
#0 WebCore::ResourceLoader::didReceiveResponse (this=0x3518a8a35da0, response=...)
at ../../third_party/WebKit/Source/core/loader/ResourceLoader.cpp:317
#1 0x00007f670815a35e in WebCore::ResourceHandleInternal::didReceiveResponse (this=0x3518a89138e0, response=...)
at ../../third_party/WebKit/Source/core/platform/network/ResourceHandle.cpp:122
#2 0x00007f6707cc440f in webkit_glue::WebURLLoaderImpl::Context::OnReceivedResponse (this=0x3518a825fb60, info=...)
at ../../webkit/glue/weburlloader_impl.cc:640
。。。。。
chromium58
If you're trying to build older releases using a current gclient, you'll most likely need to pass --disable-syntax-validation on the command line.
gclient sync --with_branch_heads --disable-syntax-validation
build release tag/branch
https://www.chromium.org/developers/how-tos/get-the-code/working-with-release-branches
gn gen out_arm64_58/Release --args='target_os="android" target_cpu="arm64" is_debug=true is_component_build=true is_clang=false
symbol_level=1 enable_incremental_javac=false enable_nacl=false proprietary_codecs=true
ffmpeg_branding="Chrome"'
ninja -C out_arm64_58/Release chrome_public_apk
