linux/scripts/gcc-version.sh
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   1#!/bin/sh
   2#
   3# gcc-version [-p] gcc-command
   4#
   5# Prints the gcc version of `gcc-command' in a canonical 4-digit form
   6# such as `0295' for gcc-2.95, `0303' for gcc-3.3, etc.
   7#
   8# With the -p option, prints the patchlevel as well, for example `029503' for
   9# gcc-2.95.3, `030301' for gcc-3.3.1, etc.
  10#
  11
  12if [ "$1" = "-p" ] ; then
  13        with_patchlevel=1;
  14        shift;
  15fi
  16
  17compiler="$*"
  18
  19if [ ${#compiler} -eq 0 ]; then
  20        echo "Error: No compiler specified."
  21        printf "Usage:\n\t$0 <gcc-command>\n"
  22        exit 1
  23fi
  24
  25MAJOR=$(echo __GNUC__ | $compiler -E -x c - | tail -n 1)
  26MINOR=$(echo __GNUC_MINOR__ | $compiler -E -x c - | tail -n 1)
  27if [ "x$with_patchlevel" != "x" ] ; then
  28        PATCHLEVEL=$(echo __GNUC_PATCHLEVEL__ | $compiler -E -x c - | tail -n 1)
  29        printf "%02d%02d%02d\\n" $MAJOR $MINOR $PATCHLEVEL
  30else
  31        printf "%02d%02d\\n" $MAJOR $MINOR
  32fi
  33
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