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#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
if [ $# -eq 1 ] ; then
OUTPUT=$1
fi
GVF=${OUTPUT}PERF-VERSION-FILE
LF='
'
#
# Use version from kernel Makefile unless not in a git repository and
# PERF-VERSION-FILE exists
#
CID=
TAG=
if test -d ../../.git -o -f ../../.git
then
TAG=$(MAKEFLAGS= make -sC ../.. kernelversion)
CID=$(git log -1 --abbrev=12 --pretty=format:"%h" 2>/dev/null) && CID="-g$CID"
elif test -f ../../PERF-VERSION-FILE
then
TAG=$(cut -d' ' -f3 ../../PERF-VERSION-FILE | sed -e 's/\"//g')
fi
if test -z "$TAG"
then
TAG=$(MAKEFLAGS= make -sC ../.. kernelversion)
fi
VN="$TAG$CID"
if test -n "$CID"
then
# format version string, strip trailing zero of sublevel:
VN=$(echo "$VN" | sed -e 's/-/./g;s/\([0-9]*[.][0-9]*\)[.]0/\1/')
fi
VN=$(expr "$VN" : v*'\(.*\)')
if test -r $GVF
then
VC=$(sed -e 's/^#define PERF_VERSION "\(.*\)"/\1/' <$GVF)
else
VC=unset
fi
test "$VN" = "$VC" || {
echo >&2 " PERF_VERSION = $VN"
echo "#define PERF_VERSION \"$VN\"" >$GVF
}
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