set -ex

main() {
    if [ "$TRAVIS_OS_NAME" = linux ]; then
        target=x86_64-unknown-linux-musl
        sort="sort"
    else
        target=x86_64-apple-darwin
        sort="gsort" # for `sort --sort-version`, from brew's coreutils.
    fi

    # Builds for iOS are done on OSX, but require the specific target to be
    # installed.
    # shellcheck disable=SC2153
    case "$TARGET" in
        aarch64-apple-ios | \
            armv7-apple-ios | \
            armv7s-apple-ios | \
            i386-apple-ios | \
            x86_64-apple-ios)
            rustup target install "$TARGET"
            ;;
    esac

    # This fetches latest stable release
    tag=$(git ls-remote --tags --refs --exit-code https://github.com/japaric/cross |
              cut -d/ -f3 |
              grep -E '^v[0.1.0-9.]+$' |
              $sort --version-sort |
              tail -n1)
    curl -LSfs https://japaric.github.io/trust/install.sh |
        sh -s -- \
            --force \
            --git japaric/cross \
            --tag "$tag" \
            --target $target
}

main