build-rust-based-toolchain.sh

#!/bin/bash

set -x -e -v

artifact=$(basename "$TOOLCHAIN_ARTIFACT")

project=${artifact%.tar.*}

workspace=$HOME/workspace

TARGET=$1

shift

FEATURES="$@"

case "$TARGET" in

x86_64-unknown-linux-gnu)

    # Native Linux Build

    export RUSTFLAGS="-Clinker=$MOZ_FETCHES_DIR/clang/bin/clang++ -C link-arg=--sysroot=$MOZ_FETCHES_DIR/sysroot-x86_64-linux-gnu -C link-arg=-fuse-ld=lld"

    export CC=$MOZ_FETCHES_DIR/clang/bin/clang

    export CXX=$MOZ_FETCHES_DIR/clang/bin/clang++

    # Not using TARGET_C*FLAGS because that applies only on target compilations,

    # while the linker flags passed through RUSTFLAGS apply to both host and target

    # when not cross-compiling, leading to a sysroot discrepancy.

    # Using C*FLAGS_x86_64_unknown_linux_gnu makes the flags apply to both host

    # and target.

    export CFLAGS_x86_64_unknown_linux_gnu="--sysroot=$MOZ_FETCHES_DIR/sysroot-x86_64-linux-gnu -fuse-ld=lld"

    export CXXFLAGS_x86_64_unknown_linux_gnu="-D_GLIBCXX_USE_CXX11_ABI=0 --sysroot=$MOZ_FETCHES_DIR/sysroot-x86_64-linux-gnu -fuse-ld=lld"

;;

aarch64-unknown-linux-gnu)

    export RUSTFLAGS="-Clinker=$MOZ_FETCHES_DIR/clang/bin/clang++ -C link-arg=--sysroot=$MOZ_FETCHES_DIR/sysroot-aarch64-linux-gnu -C link-arg=-fuse-ld=lld -C link-arg=--target=$TARGET"

    export CC=$MOZ_FETCHES_DIR/clang/bin/clang

    export CXX=$MOZ_FETCHES_DIR/clang/bin/clang++

    export TARGET_CFLAGS="--sysroot=$MOZ_FETCHES_DIR/sysroot-aarch64-linux-gnu -fuse-ld=lld"

    export TARGET_CXXFLAGS="--sysroot=$MOZ_FETCHES_DIR/sysroot-aarch64-linux-gnu -fuse-ld=lld"

;;

*-apple-darwin)

    # Cross-compiling for Mac on Linux.

    export PATH="$MOZ_FETCHES_DIR/clang/bin:$PATH"

    if test "$TARGET" = "aarch64-apple-darwin"; then

        export MACOSX_DEPLOYMENT_TARGET=11.0

    else

        export MACOSX_DEPLOYMENT_TARGET=10.12

fi

    MACOS_SYSROOT=$MOZ_FETCHES_DIR/MacOSX15.4.sdk

    export RUSTFLAGS="-Clinker=$MOZ_FETCHES_DIR/clang/bin/clang++ -C link-arg=-isysroot -C link-arg=$MACOS_SYSROOT -C link-arg=-fuse-ld=lld -C link-arg=--target=$TARGET"

    export CC="$MOZ_FETCHES_DIR/clang/bin/clang"

    export CXX="$MOZ_FETCHES_DIR/clang/bin/clang++"

    export TARGET_CFLAGS="-isysroot $MACOS_SYSROOT -fuse-ld=lld"

    export TARGET_CXXFLAGS="-isysroot $MACOS_SYSROOT -fuse-ld=lld -stdlib=libc++"

;;

*-pc-windows-msvc)

    # Cross-compiling for Windows on Linux.

    export CC=$MOZ_FETCHES_DIR/clang/bin/clang-cl

    export CXX=$MOZ_FETCHES_DIR/clang/bin/clang-cl

    export TARGET_AR=$MOZ_FETCHES_DIR/clang/bin/llvm-lib

    . $GECKO_PATH/taskcluster/scripts/misc/vs-setup.sh

    export CARGO_TARGET_I686_PC_WINDOWS_MSVC_LINKER=$MOZ_FETCHES_DIR/clang/bin/lld-link

    export CARGO_TARGET_X86_64_PC_WINDOWS_MSVC_LINKER=$MOZ_FETCHES_DIR/clang/bin/lld-link

    export CARGO_TARGET_AARCH64_PC_WINDOWS_MSVC_LINKER=$MOZ_FETCHES_DIR/clang/bin/lld-link

    export TARGET_CFLAGS="-Xclang -ivfsoverlay -Xclang $MOZ_FETCHES_DIR/vs/overlay.yaml"

    export TARGET_CXXFLAGS="-Xclang -ivfsoverlay -Xclang $MOZ_FETCHES_DIR/vs/overlay.yaml"

;;

esac

PATH="$MOZ_FETCHES_DIR/rustc/bin:$MOZ_FETCHES_DIR/clang/bin:$PATH"

CRATE_PATH=$MOZ_FETCHES_DIR/${FETCH-$project}

WORKSPACE_ROOT=$(cd $CRATE_PATH; cargo metadata --format-version 1 --no-deps --locked 2> /dev/null | jq -r .workspace_root)

if test ! -f $WORKSPACE_ROOT/Cargo.lock; then

  CARGO_LOCK=taskcluster/scripts/misc/$project-Cargo.lock

  if test -f $GECKO_PATH/$CARGO_LOCK; then

    cp $GECKO_PATH/$CARGO_LOCK $WORKSPACE_ROOT/Cargo.lock

  else

    echo "Missing Cargo.lock for the crate. Please provide one in $CARGO_LOCK" >&2

    exit 1

fi

fi

cargo install \

  --locked \

  --verbose \

  --path $CRATE_PATH \

  --target-dir $workspace/obj \

  --root $workspace/out \

  --target "$TARGET" \

  ${FEATURES:+--features "$FEATURES"}

mkdir $workspace/$project

mv $workspace/out/bin/* $workspace/$project

tar -C $workspace -acvf $project.tar.zst $project

mkdir -p $UPLOAD_DIR

mv $project.tar.zst $UPLOAD_DIR

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