env.sh

realpath() {
    OURPWD=$PWD
    cd "$(dirname "$1")"
    LINK=$(readlink "$(basename "$1")")
    while [ "$LINK" ]; do
        cd "$(dirname "$LINK")"
        LINK=$(readlink "$(basename "$1")")
    done
    REALPATH="$PWD/$(basename "$1")"
    cd "$OURPWD"
    echo "$REALPATH"
}
SCRIPT_NAME=
if [ -z $BASH_SOURCE ]; then
    SCRIPT_NAME=$0
else
    SCRIPT_NAME=${BASH_SOURCE[0]}
fi
SCRIPT_DIR=$(realpath "$(dirname "$SCRIPT_NAME")")


export ZIRCON_HOME=$SCRIPT_DIR/..
export ZIRCON_SCRIPTS=$ZIRCON_HOME/scripts

export ZIRCON_TEST=$ZIRCON_HOME/test
export ZIRCON_TEST_BUILD=$ZIRCON_TEST/build

export ZIRCON_BENCHMARK=$ZIRCON_HOME/benchmark
export ZIRCON_BENCHMARK_BUILD=$ZIRCON_BENCHMARK/build
export ZIRCON_BENCHMARK_RESULT=$ZIRCON_BENCHMARK/results

export ZIRCON_TOOLCHAINS=$ZIRCON_HOME/toolchains
export ZIRCON_BUILD_TOOLCHAINS=$ZIRCON_TOOLCHAINS/build

export ZIRCON_RV64IMA_ELF=$ZIRCON_TOOLCHAINS/rv64ima
export ZIRCON_RV64IMA_ELF_DEBUG=$ZIRCON_TOOLCHAINS/rv64ima-debug

export ZIRCON_RV64IMA_LINUX=$ZIRCON_TOOLCHAINS/rv64ima-linux
export ZIRCON_RV64IMA_LINUX_DEBUG=$ZIRCON_TOOLCHAINS/rv64ima-linux-debug

export ZIRCON_RV64IMA_MUSL=$ZIRCON_TOOLCHAINS/rv64ima-musl
export ZIRCON_RV64IMA_MUSL_DEBUG=$ZIRCON_TOOLCHAINS/rv64ima-musl-debug


check_toolchain() {
    if [[ $1 == "elf" ]] \
        && [ -f "$ZIRCON_RV64IMA_ELF/bin/riscv64-unknown-elf-gcc" ]; then
        return 0
    elif [[ $1 == "elf-debug" ]] \
        && [ -f "$ZIRCON_RV64IMA_ELF_DEBUG/bin/riscv64-unknown-elf-gcc" ]; then
       return 0
    elif [[ $1 == "linux" ]] \
        && [ -f "$ZIRCON_RV64IMA_LINUX/bin/riscv64-unknown-linux-gnu-gcc" ]; then
        return 0
    elif [[ $1 == "linux-debug" ]] \
        && [ -f "$ZIRCON_RV64IMA_LINUX_DEBUG/bin/riscv64-unknown-linux-gnu-gcc" ]; then
        return 0
    elif [[ $1 == "musl" ]] \
        && [ -f "$ZIRCON_RV64IMA_MUSL/bin/riscv64-unknown-linux-musl-gcc" ]; then
        return 0
    elif [[ $1 == "musl-debug" ]] \
        && [ -f "$ZIRCON_RV64IMA_ELF_DEBUG/bin/riscv64-unknown-linux-musl-gcc" ]; then
        return 0
    fi
    # if we get here, either invalid toolchain or not installed
    return 1
}