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#!/bin/sh
export LC_ALL=C
for ac_option do
case "$ac_option" in
--extra=*)
extra="-$option"
;;
--print)
print=yes
;;
*)
echo "Unknown parameter: $option" >&2
exit 1
;;
esac
done
# Extract revision number from file used by daily tarball snapshots
# or from "git describe" output
git_revision=$(cat snapshot_version 2> /dev/null)
test $git_revision || test ! -e .git || git_revision=`git rev-parse --short HEAD`
test $git_revision && git_revision=git-$git_revision
version="$git_revision"
# releases extract the version number from the VERSION file
releaseversion=$(cat VERSION 2> /dev/null)
if test $releaseversion ; then
test $version && version="-$version"
version="$releaseversion$version"
fi
test $version || version=UNKNOWN
VERSION="${version}${extra}"
if test "$print" = yes ; then
echo "$VERSION"
exit 0
fi
NEW_REVISION="#define VERSION \"${VERSION}\""
OLD_REVISION=$(head -n 1 version.h 2> /dev/null)
BUILDDATE="#define BUILDDATE \"$(date)\""
# Update version.h only on revision changes to avoid spurious rebuilds
if test "$NEW_REVISION" != "$OLD_REVISION"; then
cat <<EOF > version.h
$NEW_REVISION
$BUILDDATE
EOF
fi
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