#!/bin/sh

set -e

target=$1
shift

clang=$MOZ_FETCHES_DIR/clang/bin/clang

case "$target" in
aarch64-apple-darwin)
  arch=arm64
  sdk=11.0
  compiler_wrapper() {
    echo exec \$MOZ_FETCHES_DIR/clang/bin/$1 -mcpu=apple-a12 \"\$@\" > $1
    chmod +x $1
  }
  compiler_wrapper clang
  compiler_wrapper clang++
  clang=$PWD/clang
  ;;
x86_64-apple-darwin)
  arch=x86_64
  sdk=10.12
  ;;
esac

case "$target" in
*-apple-darwin)
  libdir=lib/darwin
  EXTRA_CMAKE_FLAGS="
    -DCMAKE_LINKER=$MOZ_FETCHES_DIR/cctools/bin/$target-ld
    -DCMAKE_LIPO=$MOZ_FETCHES_DIR/cctools/bin/lipo
    -DCMAKE_SYSTEM_NAME=Darwin
    -DCMAKE_SYSTEM_VERSION=$sdk
    -DCMAKE_OSX_SYSROOT=$MOZ_FETCHES_DIR/MacOSX$sdk.sdk
    -DDARWIN_osx_ARCHS=$arch
    -DDARWIN_osx_SYSROOT=$MOZ_FETCHES_DIR/MacOSX$sdk.sdk
    -DDARWIN_macosx_OVERRIDE_SDK_VERSION=$sdk
    -DDARWIN_osx_BUILTIN_ARCHS=$arch
  "
  # compiler-rt build script expects to find `codesign` in $PATH.
  # Give it a fake one.
  echo "#!/bin/sh" > codesign
  chmod +x codesign
  PATH="$PWD:$MOZ_FETCHES_DIR/cctools/bin:$PATH"
  ;;
aarch64-unknown-linux-gnu)
  libdir=lib/linux
  EXTRA_CMAKE_FLAGS="
    -DCMAKE_SYSROOT=$MOZ_FETCHES_DIR/sysroot
    -DCMAKE_LINKER=$MOZ_FETCHES_DIR/clang/bin/ld.lld
  "
  PATH="$MOZ_FETCHES_DIR/binutils/bin:$PATH"
  ;;
*)
  echo $target is not supported yet
  exit 1
  ;;
esac

if [ -n "$TOOLTOOL_MANIFEST" ]; then
  . $GECKO_PATH/taskcluster/scripts/misc/tooltool-download.sh
fi

mkdir compiler-rt
cd compiler-rt

for patchfile in "$@"; do
  patch -d $MOZ_FETCHES_DIR/llvm-project -p1 < $GECKO_PATH/$patchfile
done

cmake \
  $MOZ_FETCHES_DIR/llvm-project/compiler-rt \
  -GNinja \
  -DCMAKE_C_COMPILER=$clang \
  -DCMAKE_CXX_COMPILER=$clang++ \
  -DCMAKE_C_COMPILER_TARGET=$target \
  -DCMAKE_CXX_COMPILER_TARGET=$target \
  -DCMAKE_ASM_COMPILER_TARGET=$target \
  -DCMAKE_AR=$MOZ_FETCHES_DIR/clang/bin/llvm-ar \
  -DCMAKE_RANLIB=$MOZ_FETCHES_DIR/clang/bin/llvm-ranlib \
  -DCMAKE_BUILD_TYPE=Release \
  -DLLVM_ENABLE_ASSERTIONS=OFF \
  -DLLVM_CONFIG_PATH=$MOZ_FETCHES_DIR/clang/bin/llvm-config \
  -DCOMPILER_RT_DEFAULT_TARGET_ONLY=ON \
  $EXTRA_CMAKE_FLAGS

ninja -v

cd ..

tar caf compiler-rt.tar.zst compiler-rt/$libdir

mkdir -p "$UPLOAD_DIR"
mv "compiler-rt.tar.zst" "$UPLOAD_DIR"