1#!/bin/sh
2# SPDX-License-Identifier: GPL-2.0
3
4if [ $# -eq 1 ]  ; then
5	OUTPUT=$1
6fi
7
8GVF=${OUTPUT}PERF-VERSION-FILE
9
10LF='
11'
12
13#
14# First check if there is a .git to get the version from git describe
15# otherwise try to get the version from the kernel Makefile
16#
17CID=
18TAG=
19if test -d ../../.git -o -f ../../.git
20then
21	TAG=$(git describe --abbrev=0 --match "v[0-9].[0-9]*" 2>/dev/null )
22	CID=$(git log -1 --abbrev=12 --pretty=format:"%h" 2>/dev/null) && CID="-g$CID"
23elif test -f ../../PERF-VERSION-FILE
24then
25	TAG=$(cut -d' ' -f3 ../../PERF-VERSION-FILE | sed -e 's/\"//g')
26fi
27if test -z "$TAG"
28then
29	TAG=$(MAKEFLAGS= make -sC ../.. kernelversion)
30fi
31VN="$TAG$CID"
32if test -n "$CID"
33then
34	# format version string, strip trailing zero of sublevel:
35	VN=$(echo "$VN" | sed -e 's/-/./g;s/\([0-9]*[.][0-9]*\)[.]0/\1/')
36fi
37
38VN=$(expr "$VN" : v*'\(.*\)')
39
40if test -r $GVF
41then
42	VC=$(sed -e 's/^#define PERF_VERSION "\(.*\)"/\1/' <$GVF)
43else
44	VC=unset
45fi
46test "$VN" = "$VC" || {
47	echo >&2 "  PERF_VERSION = $VN"
48	echo "#define PERF_VERSION \"$VN\"" >$GVF
49}
50
51
52