#!/bin/sh
  #

  # gcc-version [-p] gcc-command

  #
  # Prints the gcc version of `gcc-command' in a canonical 4-digit form
  # such as `0295' for gcc-2.95, `0303' for gcc-3.3, etc.
  #

  # With the -p option, prints the patchlevel as well, for example `029503' for
  # gcc-2.95.3, `030301' for gcc-3.3.1, etc.
  #

  if [[ $1 = "-p" ]] ; then with_patchlevel=1; shift; fi

  
  compiler="$*"

  if [ ${#compiler} -eq 0 ]; then
  	echo "Error: No compiler specified."
  	echo -e "Usage:
  \t$0 <gcc-command>"
  	exit 1
  fi

  MAJOR=$(echo __GNUC__ | $compiler -E -xc - | tail -n 1)
  MINOR=$(echo __GNUC_MINOR__ | $compiler -E -xc - | tail -n 1)

  if [ "x$with_patchlevel" != "x" ] ; then
  	PATCHLEVEL=$(echo __GNUC_PATCHLEVEL__ | $compiler -E -xc - | tail -n 1)
  	printf "%02d%02d%02d\
  " $MAJOR $MINOR $PATCHLEVEL
  else
  	printf "%02d%02d\
  " $MAJOR $MINOR
  fi