gcc-version.sh 857 Bytes
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#!/bin/sh
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# SPDX-License-Identifier: GPL-2.0
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#
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# gcc-version [-p] gcc-command
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#
# 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.
#
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# With the -p option, prints the patchlevel as well, for example `029503' for
# gcc-2.95.3, `030301' for gcc-3.3.1, etc.
#

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

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

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