linux/scripts/gcc-version.sh
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   1#!/bin/sh
   2# SPDX-License-Identifier: GPL-2.0
   3#
   4# gcc-version gcc-command
   5#
   6# Print the gcc version of `gcc-command' in a 5 or 6-digit form
   7# such as `29503' for gcc-2.95.3, `30301' for gcc-3.3.1, etc.
   8
   9compiler="$*"
  10
  11if [ ${#compiler} -eq 0 ]; then
  12        echo "Error: No compiler specified." >&2
  13        printf "Usage:\n\t$0 <gcc-command>\n" >&2
  14        exit 1
  15fi
  16
  17MAJOR=$(echo __GNUC__ | $compiler -E -x c - | tail -n 1)
  18MINOR=$(echo __GNUC_MINOR__ | $compiler -E -x c - | tail -n 1)
  19PATCHLEVEL=$(echo __GNUC_PATCHLEVEL__ | $compiler -E -x c - | tail -n 1)
  20printf "%d%02d%02d\\n" $MAJOR $MINOR $PATCHLEVEL
  21