#!/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 test $1 = "-p"  {
	setglobal with_patchlevel = '1';
	shift;
}

setglobal compiler = "$ifsjoin(Argv)"

if test $(#compiler) -eq 0 {
	echo "Error: No compiler specified."
	printf "Usage:\n\t$0 <gcc-command>\n"
	exit 1
}

setglobal MAJOR = $[echo __GNUC__ | $compiler -E -x c - | tail -n 1]
setglobal MINOR = $[echo __GNUC_MINOR__ | $compiler -E -x c - | tail -n 1]
if test "x$with_patchlevel" != "x"  {
	setglobal PATCHLEVEL = $[echo __GNUC_PATCHLEVEL__ | $compiler -E -x c - | tail -n 1]
	printf "%02d%02d%02d\\n" $MAJOR $MINOR $PATCHLEVEL
} else {
	printf "%02d%02d\\n" $MAJOR $MINOR
}