#!/bin/sh
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# SPDX-License-Identifier: GPL-2.0
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if [ $# -eq 1 ] ; then
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OUTPUT=$1
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fi
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GVF=${OUTPUT}PERF-VERSION-FILE
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LF='
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'
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#
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# First check if there is a .git to get the version from git describe
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# otherwise try to get the version from the kernel Makefile
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#
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CID=
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TAG=
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if test -d ../../.git -o -f ../../.git
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then
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TAG=$(git describe --abbrev=0 --match "v[0-9].[0-9]*" 2>/dev/null )
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CID=$(git log -1 --abbrev=4 --pretty=format:"%h" 2>/dev/null) && CID="-g$CID"
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elif test -f ../../PERF-VERSION-FILE
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then
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TAG=$(cut -d' ' -f3 ../../PERF-VERSION-FILE | sed -e 's/\"//g')
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fi
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if test -z "$TAG"
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then
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TAG=$(MAKEFLAGS= make -sC ../.. kernelversion)
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fi
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VN="$TAG$CID"
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if test -n "$CID"
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then
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# format version string, strip trailing zero of sublevel:
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VN=$(echo "$VN" | sed -e 's/-/./g;s/\([0-9]*[.][0-9]*\)[.]0/\1/')
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fi
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VN=$(expr "$VN" : v*'\(.*\)')
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if test -r $GVF
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then
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VC=$(sed -e 's/^#define PERF_VERSION "\(.*\)"/\1/' <$GVF)
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else
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VC=unset
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fi
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test "$VN" = "$VC" || {
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echo >&2 " PERF_VERSION = $VN"
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echo "#define PERF_VERSION \"$VN\"" >$GVF
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}
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