rust/build_toolchain

#!/bin/bash
# Copyright 2017 The Fuchsia Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

# TODO(raggi): add support for arm targets

if [[ -z $RUST_ROOT ]]; then
  echo "Need \$RUST_ROOT to be set"
  exit 1
fi

if [[ -z $FUCHSIA_DIR ]]; then
  echo "Need \$FUCHSIA_DIR to be set"
  exit 1
fi


if [[ -z $FUCHSIA_OUT_DIR ]]; then
  echo "Need \$FUCHSIA_OUT_DIR to be set"
  exit 1
fi


case $(uname) in
  Darwin)
    export PREFIX=$FUCHSIA_DIR/buildtools/mac-x64/rust
    clangdir="$FUCHSIA_DIR/buildtools/mac-x64/clang"
    export TARGETS=x86_64-unknown-fuchsia,x86_64-apple-darwin
    ;;
  Linux)
    export PREFIX=$FUCHSIA_DIR/buildtools/linux-x64/rust
    clangdir="$FUCHSIA_DIR/buildtools/linux-x64/clang"
    export TARGETS=x86_64-unknown-fuchsia,x86_64-unknown-linux-gnu
    ;;
  *)
    echo "Unsupported platform" >&2
    exit 1
    ;;
esac

if [[ ! -d $clangdir ]]; then
  echo "Prebuilt clang toolchain missing $clangdir, maybe you need to update?" >&2
  exit 1
fi

export PATH=$FUCHSIA_DIR/buildtools:$clangdir/bin:$PATH

for arch in x86_64 ; do
  for tool in clang clang++; do
    cat > $clangdir/bin/${arch}-unknown-fuchsia-${tool} <<EOF
#!/bin/sh
${tool} --target=${arch}-unknown-fuchsia --sysroot=$FUCHSIA_OUT_DIR/build-zircon/build-zircon-pc-x86-64/sysroot/ "\$@"
EOF
    chmod +x $clangdir/bin/${arch}-unknown-fuchsia-${tool}
  done
  if [[ ! -x $clangdir/${arch}-unknown-fuchsia-ar ]]; then
    ln -s $clangdir/bin/llvm-ar $clangdir/bin/${arch}-unknown-fuchsia-ar
  fi
  export AR_${arch}_unknown_fuchsia=llvm-ar
  export CC_${arch}_unknown_fuchsia=${arch}-unknown-fuchsia-clang
  export CXX_${arch}_unknown_fuchsia=${arch}-unknown-fuchsia-clang++
done


mkdir -p $FUCHSIA_OUT_DIR/rust
cd $FUCHSIA_OUT_DIR/rust

if [[ ! -f config.toml ]]; then
  $RUST_ROOT/configure --target=$TARGETS --sysconfdir=$PREFIX/etc --enable-extended --prefix=$PREFIX --enable-ninja --enable-optimize --enable-optimize-llvm  --enable-cargo-openssl-static
fi

python2.7 $RUST_ROOT/x.py dist && python2.7 $RUST_ROOT/x.py install