|  | #!/bin/sh | 
|  | # SPDX-License-Identifier: GPL-2.0 | 
|  |  | 
|  | if [ $# -eq 1 ]  ; then | 
|  | OUTPUT=$1 | 
|  | fi | 
|  |  | 
|  | GVF=${OUTPUT}PERF-VERSION-FILE | 
|  |  | 
|  | LF=' | 
|  | ' | 
|  |  | 
|  | # | 
|  | # First check if there is a .git to get the version from git describe | 
|  | # otherwise try to get the version from the kernel Makefile | 
|  | # | 
|  | CID= | 
|  | TAG= | 
|  | if test -d ../../.git -o -f ../../.git | 
|  | then | 
|  | TAG=$(git describe --abbrev=0 --match "v[0-9].[0-9]*" 2>/dev/null ) | 
|  | CID=$(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 | 
|  | } | 
|  |  | 
|  |  |