#!/bin/sh# SPDX-License-Identifier: GPL-2.0## clang-version [-p] clang-command## Prints the compiler version of `clang-command' in a canonical 4-digit form# such as `0500' for clang-5.0 etc.## With the -p option, prints the patchlevel as well, for example `050001' for# clang-5.0.1 etc.#compiler="$*"if!($compiler--version | grep-q clang);thenecho 0exit 1fiMAJOR=$(echo __clang_major__ | $compiler-E-x c - | tail-n 1)MINOR=$(echo __clang_minor__ | $compiler-E-x c - | tail-n 1)PATCHLEVEL=$(echo __clang_patchlevel__ | $compiler-E-x c - | tail-n 1)printf"%d%02d%02d\\n"$MAJOR$MINOR$PATCHLEVEL