build skia

build_skia.sh

# 下载安装 depot_tools

git clone 'https://chromium.googlesource.com/chromium/tools/depot_tools.git'
export PATH="${PWD}/depot_tools:${PATH}"

# 下载 skia

git clone https://skia.googlesource.com/skia.git
cd skia
python2 tools/git-sync-deps

# 编译 skia

# 遇到 libjpeg 相关的报错，检查一下系统里是否有多个 libjpeg 版本，可以增加 `skia_use_libjpeg_turbo_decode=false skia_use_libjpeg_turbo_encode=false` 选项

# 遇到 fatal error: 'unicode/unistr.h' file not found，增加 `skia_use_system_icu=false` 选项

bin/gn gen out/Static --args="is_official_build=true skia_use_system_icu=false skia_use_harfbuzz=false skia_use_libjpeg_turbo_decode=false skia_use_libjpeg_turbo_encode=false skia_use_ffmpeg=true extra_cflags_cc=[\"-frtti\"]"
ninja -C out/Static skia

# 更新 skia

git pull
python tools/git-sync-deps
ninja -C out/Static skia