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#!/bin/sh -x

rust_root="$(pwd)/rust"

rust_target="riscv32imac-unknown-xous-elf"

export RUSTC_BOOTSTRAP=1

export RUST_TARGET_PATH="$rust_root/xous-sysroot"

export RUSTFLAGS="--sysroot $rust_root/xous-sysroot"

export CC=riscv64-unknown-elf-gcc

export AR=riscv64-unknown-elf-ar

# Get the current rust tag (currently 1.41.0)

rust_tag=$(rustc -Vv | grep 'release: ' | cut -d' ' -f2)

# # Clone the latest Rust source

echo "Checking out Rust $rust_tag-xous..."

git clone 'git@github.com:xous-os/rust.git' rust

cd rust

git checkout $rust_tag-xous

git submodule init

git submodule sync

git submodule update

cd "$rust_root/src"

git clone --recursive https://github.com/rust-lang/compiler-builtins.git

mkdir -p "$RUST_TARGET_PATH/lib/rustlib/$rust_target/lib"

echo "Creating $rust_target.json..."

rustc --target riscv32imac-unknown-none-elf --print target-spec-json -Z unstable-options | sed '/"is-builtin":/d' | sed 's/"os": "none",/"os": "xous",/' > "$RUST_TARGET_PATH/$rust_target.json"

cd $rust_root/src/libcore

cargo build --release --target $rust_target

cp $rust_root/target/$rust_target/release/libcore.rlib $RUST_TARGET_PATH/lib/rustlib/$rust_target/lib

cd "$rust_root/src/liballoc"

cargo build --release --target $rust_target

cp "$rust_root/target/$rust_target/release/liballoc.rlib" "$RUST_TARGET_PATH/lib/rustlib/$rust_target/lib"

cd "$rust_root/src/compiler-builtins"

cargo build --release --target $rust_target --features mem

cp "target/$rust_target/release/libcompiler_builtins.rlib" "$RUST_TARGET_PATH/lib/rustlib/$rust_target/lib"

cd "$rust_root/src/libstd"

cargo build --release --target $rust_target

cp "$rust_root/target/$rust_target/release/libstd.rlib" "$RUST_TARGET_PATH/lib/rustlib/$rust_target/lib"

cd "$rust_root"