1#!/bin/sh
 2# SPDX-License-Identifier: GPL-2.0
 3#
 4# Usage: $ ./rustc-llvm-version.sh rustc
 5#
 6# Print the LLVM version that the Rust compiler uses in a 6 digit form.
 7
 8# Convert the version string x.y.z to a canonical up-to-6-digits form.
 9get_canonical_version()
10{
11	IFS=.
12	set -- $1
13	echo $((10000 * $1 + 100 * $2 + $3))
14}
15
16if output=$("$@" --version --verbose 2>/dev/null | grep -E 'LLVM.*[0-9]+\.[0-9]+\.[0-9]+'); then
17	set -- $output
18	get_canonical_version $3
19else
20	echo 0
21	exit 1
22fi