| #!/bin/bash |
| # Copyright 2020 Google LLC |
| # |
| # Use of this source code is governed by a BSD-style license that can be |
| # found in the LICENSE file. |
| |
| set -ex |
| |
| BASE_DIR=`cd $(dirname ${BASH_SOURCE[0]}) && pwd` |
| # This expects the environment variable EMSDK to be set |
| if [[ ! -d $EMSDK ]]; then |
| cat >&2 << "EOF" |
| Be sure to set the EMSDK environment variable to the location of Emscripten SDK: |
| |
| https://emscripten.org/docs/getting_started/downloads.html |
| EOF |
| exit 1 |
| fi |
| |
| # Navigate to SKIA_HOME from where this file is located. |
| pushd $BASE_DIR/../.. |
| |
| source $EMSDK/emsdk_env.sh |
| EMCC=`which emcc` |
| EMCXX=`which em++` |
| EMAR=`which emar` |
| |
| RELEASE_CONF="-Oz --closure 1 --llvm-lto 1 -DSK_RELEASE --pre-js $BASE_DIR/release.js \ |
| -DGR_GL_CHECK_ALLOC_WITH_GET_ERROR=0 -DSK_DISABLE_TRACING" |
| EXTRA_CFLAGS="\"-DSK_RELEASE\", \"-DSK_DISABLE_TRACING\"" |
| IS_OFFICIAL_BUILD="true" |
| |
| if [[ $@ == *full-build* ]]; then |
| # Full Skottie with all bells and whistles. |
| BUILD_TYPE="full" |
| BUILD_CFG="\ |
| skia_enable_fontmgr_custom_embedded=true \ |
| skia_enable_fontmgr_custom_empty=false \ |
| skia_use_freetype=true \ |
| skia_use_libgifcodec=true \ |
| skia_use_harfbuzz=true \ |
| skia_use_icu=true \ |
| skia_use_libpng_decode=true \ |
| skia_use_wuffs=true \ |
| skia_use_zlib=true \ |
| \ |
| skia_use_system_freetype2=false \ |
| skia_use_system_harfbuzz=false \ |
| skia_use_system_icu=false \ |
| skia_use_system_libpng=false \ |
| skia_use_system_zlib=false\ |
| " |
| else |
| # Smallest usable Skottie. |
| BUILD_TYPE="minimal" |
| BUILD_CFG="\ |
| skia_enable_fontmgr_custom_embedded=false \ |
| skia_enable_fontmgr_custom_empty=true \ |
| skia_use_freetype=false \ |
| skia_use_libgifcodec=false \ |
| skia_use_harfbuzz=false \ |
| skia_use_icu=false \ |
| skia_use_libpng_decode=false \ |
| skia_use_wuffs=false \ |
| skia_use_zlib=false \ |
| " |
| fi |
| |
| if [[ $@ == *debug* ]]; then |
| echo "Building a *${BUILD_TYPE}* Debug build" |
| EXTRA_CFLAGS="\"-DSK_DEBUG\"" |
| RELEASE_CONF="-O0 --js-opts 0 -s DEMANGLE_SUPPORT=1 -s ASSERTIONS=1 -s GL_ASSERTIONS=1 -g4 \ |
| --source-map-base /bin/ -DSK_DEBUG --pre-js $BASE_DIR/debug.js" |
| BUILD_DIR=${BUILD_DIR:="out/skottiekit_debug"} |
| elif [[ $@ == *profiling* ]]; then |
| echo "Building a *${BUILD_TYPE}* build for profiling" |
| RELEASE_CONF+=" --profiling-funcs --closure 0" |
| BUILD_DIR=${BUILD_DIR:="out/skottiekit_profile"} |
| else |
| BUILD_DIR=${BUILD_DIR:="out/skottiekit"} |
| fi |
| |
| mkdir -p $BUILD_DIR |
| # sometimes the .a files keep old symbols around - cleaning them out makes sure |
| # we get a fresh build. |
| rm -f $BUILD_DIR/*.a |
| |
| GN_GPU="skia_enable_gpu=true skia_gl_standard = \"webgl\"" |
| GN_GPU_FLAGS="\"-DSK_DISABLE_LEGACY_SHADERCONTEXT\"," |
| WASM_GPU="-lEGL -lGL -lGLESv2 -DSK_SUPPORT_GPU=1 -DSK_GL \ |
| -DSK_DISABLE_LEGACY_SHADERCONTEXT --pre-js $BASE_DIR/cpu.js --pre-js $BASE_DIR/gpu.js\ |
| -s USE_WEBGL2=1" |
| if [[ $@ == *cpu* ]]; then |
| echo "Using the CPU backend instead of the GPU backend" |
| GN_GPU="skia_enable_gpu=false" |
| GN_GPU_FLAGS="" |
| WASM_GPU="-DSK_SUPPORT_GPU=0 --pre-js $BASE_DIR/cpu.js -s USE_WEBGL2=0" |
| fi |
| |
| SKOTTIE_LIB="$BUILD_DIR/libskottie.a \ |
| $BUILD_DIR/libsksg.a" |
| |
| |
| MANAGED_SKOTTIE_BINDINGS="\ |
| -DSK_INCLUDE_MANAGED_SKOTTIE=1 \ |
| modules/skottie/utils/SkottieUtils.cpp" |
| if [[ $@ == *no_managed_skottie* ]]; then |
| echo "Omitting managed Skottie" |
| MANAGED_SKOTTIE_BINDINGS="-DSK_INCLUDE_MANAGED_SKOTTIE=0" |
| fi |
| |
| # Turn off exiting while we check for ninja (which may not be on PATH) |
| set +e |
| NINJA=`which ninja` |
| if [[ -z $NINJA ]]; then |
| git clone "https://chromium.googlesource.com/chromium/tools/depot_tools.git" --depth 1 $BUILD_DIR/depot_tools |
| NINJA=$BUILD_DIR/depot_tools/ninja |
| fi |
| # Re-enable error checking |
| set -e |
| |
| ./bin/fetch-gn |
| |
| echo "Compiling bitcode" |
| |
| # Inspired by https://github.com/Zubnix/skia-wasm-port/blob/master/build_bindings.sh |
| ./bin/gn gen ${BUILD_DIR} \ |
| --args="cc=\"${EMCC}\" \ |
| cxx=\"${EMCXX}\" \ |
| ar=\"${EMAR}\" \ |
| extra_cflags_cc=[\"-frtti\"] \ |
| extra_cflags=[\"-s\", \"WARN_UNALIGNED=1\", \"-s\", \"MAIN_MODULE=1\", |
| \"-DSKNX_NO_SIMD\", \"-DSK_DISABLE_AAA\", |
| \"-DSK_DISABLE_EFFECT_DESERIALIZATION\", |
| \"-DSK_FORCE_8_BYTE_ALIGNMENT\", |
| ${GN_GPU_FLAGS} |
| ${EXTRA_CFLAGS} |
| ] \ |
| is_debug=false \ |
| is_official_build=${IS_OFFICIAL_BUILD} \ |
| is_component_build=false \ |
| werror=true \ |
| target_cpu=\"wasm\" \ |
| \ |
| ${BUILD_CFG} \ |
| skia_use_angle=false \ |
| skia_use_dng_sdk=false \ |
| skia_use_egl=true \ |
| skia_use_expat=false \ |
| skia_use_fontconfig=false \ |
| skia_use_libheif=false \ |
| skia_use_libjpeg_turbo_decode=true \ |
| skia_use_libjpeg_turbo_encode=false \ |
| skia_use_libpng_encode=false \ |
| skia_use_libwebp_decode=false \ |
| skia_use_libwebp_encode=false \ |
| skia_use_lua=false \ |
| skia_use_piex=false \ |
| skia_use_system_libjpeg_turbo=false \ |
| skia_use_vulkan=false \ |
| skia_enable_fontmgr_custom_directory=false \ |
| \ |
| ${GN_GPU} \ |
| \ |
| skia_enable_skshaper=true \ |
| skia_enable_nga=false \ |
| skia_enable_pdf=false" |
| |
| # Build all the libs we will need below |
| |
| ${NINJA} -C ${BUILD_DIR} libskia.a libskottie.a libsksg.a libskshaper.a |
| |
| export EMCC_CLOSURE_ARGS="--externs $BASE_DIR/externs.js " |
| |
| echo "Generating final wasm" |
| |
| # Emscripten prefers that the .a files go last in order, otherwise, it |
| # may drop symbols that it incorrectly thinks aren't used. One day, |
| # Emscripten will use LLD, which may relax this requirement. |
| ${EMCXX} \ |
| -I. \ |
| $RELEASE_CONF \ |
| -DSK_DISABLE_AAA \ |
| -DSK_FORCE_8_BYTE_ALIGNMENT \ |
| $WASM_GPU \ |
| -std=c++17 \ |
| --bind \ |
| --no-entry \ |
| --pre-js $BASE_DIR/preamble.js \ |
| --pre-js $BASE_DIR/helper.js \ |
| --pre-js $BASE_DIR/interface.js \ |
| --pre-js $BASE_DIR/postamble.js \ |
| $BASE_DIR/skottiekit_bindings.cpp \ |
| modules/skresources/src/SkResources.cpp \ |
| $MANAGED_SKOTTIE_BINDINGS \ |
| $BUILD_DIR/libskottie.a \ |
| $BUILD_DIR/libsksg.a \ |
| $BUILD_DIR/libskshaper.a \ |
| $BUILD_DIR/libskia.a \ |
| -s ALLOW_MEMORY_GROWTH=1 \ |
| -s EXPORT_NAME="SkottieKitInit" \ |
| -s FORCE_FILESYSTEM=0 \ |
| -s FILESYSTEM=0 \ |
| -s MODULARIZE=1 \ |
| -s NO_EXIT_RUNTIME=1 \ |
| -s STRICT=1 \ |
| -s INITIAL_MEMORY=128MB \ |
| -s WARN_UNALIGNED=1 \ |
| -s WASM=1 \ |
| -o $BUILD_DIR/skottiekit.js |