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#!/usr/bin/env bash
# Requires the CHANNEL env var to be set to `debug` or `release.`
set -e
source ./config.sh
dir=$(pwd)
# Use rustc with cg_clif as hotpluggable backend instead of the custom cg_clif driver so that
# build scripts are still compiled using cg_llvm.
export RUSTC=$dir"/bin/cg_clif_build_sysroot"
export RUSTFLAGS=$RUSTFLAGS" --clif"
cd "$(dirname "$0")"
# Cleanup for previous run
# v Clean target dir except for build scripts and incremental cache
rm -r target/*/{debug,release}/{build,deps,examples,libsysroot*,native} 2>/dev/null || true
# We expect the target dir in the default location. Guard against the user changing it.
export CARGO_TARGET_DIR=target
# Build libs
export RUSTFLAGS="$RUSTFLAGS -Zforce-unstable-if-unmarked -Cpanic=abort"
export __CARGO_DEFAULT_LIB_METADATA="cg_clif"
if [[ "$1" != "--debug" ]]; then
sysroot_channel='release'
# FIXME Enable incremental again once rust-lang/rust#74946 is fixed
CARGO_INCREMENTAL=0 RUSTFLAGS="$RUSTFLAGS -Zmir-opt-level=3" cargo build --target "$TARGET_TRIPLE" --release
else
sysroot_channel='debug'
cargo build --target "$TARGET_TRIPLE"
fi
# Copy files to sysroot
ln "target/$TARGET_TRIPLE/$sysroot_channel/deps/"* "$dir/lib/rustlib/$TARGET_TRIPLE/lib/"
rm "$dir/lib/rustlib/$TARGET_TRIPLE/lib/"*.{rmeta,d}
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