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#!/bin/sh -eu
#
# Copyright © 2020-2022 The Crust Firmware Authors.
# SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0-only
#
major=0
minor=6
patch=10000
srcdir=$1
output=$2
if test "$srcdir" = "$(git -C "$srcdir" rev-parse --show-toplevel 2>/dev/null)"; then
set -- $(git -C "$srcdir" describe --dirty --long --match 'v[0-9]*' | tr '.-' ' ')
if test "$#" -ge 4; then
major=${1#v}
minor=$2
patch=$3
fi
if test "$#" -ge 5 && test "$5" = "dirty"; then
patch=$((patch+10000))
fi
fi
trap 'rm -f "$output.tmp"' EXIT
cat > "$output.tmp" << EOF
#define VERSION_MAJOR $major
#define VERSION_MINOR $minor
#define VERSION_PATCH $patch
#define VERSION_STRING "v${major}.${minor}.${patch}"
EOF
if ! test -f "$output" ||
! test "$(cat "$output.tmp")" = "$(cat "$output")"; then
mv -f "$output.tmp" "$output"
fi
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