build_wasm.sh

sourcedir="$PWD"
if [ ! -d $sourcedir/wasi-sdk ]; then
  wget -O wasi-sdk.tar.gz https://github.com/swiftwasm/wasi-sdk/releases/download/20190421.6/wasi-sdk-3.19gefb17cb478f9.m-linux.tar.gz
  tar xfz wasi-sdk.tar.gz
  mv wasi-sdk-3.19gefb17cb478f9+m/opt/wasi-sdk ./wasi-sdk
fi
cd swift
utils/build-script --debug --wasm \
  --skip-build-benchmarks \
  --extra-cmake-options="-DSWIFT_PRIMARY_VARIANT_SDK:STRING=WASM -DSWIFT_PRIMARY_VARIANT_ARCH:STRING=wasm32 -DSWIFT_OSX_x86_64_ICU_STATICLIB=1" \
  --stdlib-deployment-targets "wasm-wasm32" \
  --build-stdlib-deployment-targets "wasm-wasm32" \
  --llvm-targets-to-build "X86;WebAssembly" \
  --build-swift-dynamic-sdk-overlay false \
  --build-swift-static-sdk-overlay false \
  --wasm-wasi-sdk "$sourcedir/wasi-sdk" \
  --wasm-icu-uc "$sourcedir/icu_out/lib/libicuuc.a" \
  --wasm-icu-uc-include "$sourcedir/icu_out/include" \
  --wasm-icu-i18n "$sourcedir/icu_out/lib/libicui18n.a" \
  --wasm-icu-i18n-include "$sourcedir/icu_out/include" \
  --wasm-icu-data "todo-icu-data" \
  --build-swift-static-stdlib