1#!/bin/sh
2# SPDX-License-Identifier: GPL-2.0
3#
4# clang-version [-p] clang-command
5#
6# Prints the compiler version of `clang-command' in a canonical 4-digit form
7# such as `0500' for clang-5.0 etc.
8#
9# With the -p option, prints the patchlevel as well, for example `050001' for
10# clang-5.0.1 etc.
11#
12
13compiler="$*"
14
15if ! ( $compiler --version | grep -q clang) ; then
16	echo 0
17	exit 1
18fi
19
20MAJOR=$(echo __clang_major__ | $compiler -E -x c - | tail -n 1)
21MINOR=$(echo __clang_minor__ | $compiler -E -x c - | tail -n 1)
22PATCHLEVEL=$(echo __clang_patchlevel__ | $compiler -E -x c - | tail -n 1)
23printf "%d%02d%02d\\n" $MAJOR $MINOR $PATCHLEVEL
24