#!/bin/bash
set -x -e -v

artifact=$(basename $TOOLCHAIN_ARTIFACT)
dir=${artifact%.tar.*}

patch -d $MOZ_FETCHES_DIR/wasi-sdk -p1 < $(dirname $0)/wasi-sdk.patch

cd $MOZ_FETCHES_DIR/wasi-sdk
LLVM_PROJ_DIR=$MOZ_FETCHES_DIR/llvm-project

mkdir -p build/install/wasi
# The wasi-sdk build system wants to build clang itself. We trick it into
# thinking it did, and put our own clang where it would have built its own.
ln -s $MOZ_FETCHES_DIR/clang build/llvm
touch build/llvm.BUILT

# The wasi-sdk build system wants a clang and an ar binary in
# build/install/$PREFIX/bin
ln -s $MOZ_FETCHES_DIR/clang/bin build/install/wasi/bin
ln -s llvm-ar build/install/wasi/bin/ar

# Build compiler-rt
# `BULK_MEMORY_SOURCES=` force-disables building things with -mbulk-memory,
# which wasm2c doesn't support yet.
make \
  LLVM_PROJ_DIR=$LLVM_PROJ_DIR \
  BULK_MEMORY_SOURCES= \
  PREFIX=/wasi \
  build/compiler-rt.BUILT \
  -j$(nproc)

mkdir -p $dir/lib
mv build/install/wasi/lib/clang/*/lib/wasi $dir/lib
tar --zstd -cf $artifact $dir
mkdir -p $UPLOAD_DIR
mv $artifact $UPLOAD_DIR/