From 117a93db1dcd6ed61336b27e4e2938f791c1841b Mon Sep 17 00:00:00 2001 From: Rene Scharfe Date: Wed, 4 Jan 2006 20:42:03 +0100 Subject: [PATCH] kbuild: Use git in scripts/setlocalversion Currently scripts/setlocalversion is a Perl script that tries to figure out the current git commit ID of a repo without using git. It also imports Digest::MD5 without using it and generally is too big for the small task it does. :] And it always reports a git ID, even when the HEAD is tagged -- this is a bug. This patch replaces it with a Bourne Shell script that uses git commands to do the same. I can't come up with a scenario where someone would use a git repo and refuse to install git core at the same time, so I think it's reasonable to assume git is available. The new script also reports uncommitted changes by adding -git_dirty to the version string. Obviously you can't see from that _what_ has been changed from the last commit, so it's more of a reminder that you forgot to commit something. The script is easily extensible: simply add a check for Mercurial (or whatever) below the git check. Note: the script doesn't print a newline char anymore. That's only because it was easier to implement it that way, not a feature (or bug). 'make kernelrelease' doesn't care. Signed-off-by: Rene Scharfe Acked-by: Ryan Anderson Signed-off-by: Sam Ravnborg --- scripts/setlocalversion | 68 +++++++++++------------------------------ 1 file changed, 17 insertions(+), 51 deletions(-) diff --git a/scripts/setlocalversion b/scripts/setlocalversion index 7c805c8fccd2..f54dac88cfd1 100644 --- a/scripts/setlocalversion +++ b/scripts/setlocalversion @@ -1,56 +1,22 @@ -#!/usr/bin/perl -# Copyright 2004 - Ryan Anderson GPL v2 +#!/bin/sh +# Print additional version information for non-release trees. -use strict; -use warnings; -use Digest::MD5; -require 5.006; - -if (@ARGV != 1) { - print < -EOT - exit(1); +usage() { + echo "Usage: $0 [srctree]" >&2 + exit 1 } -my ($srctree) = @ARGV; -chdir($srctree); - -my @LOCALVERSIONS = (); - -# We are going to use the following commands to try and determine if this -# repository is at a Version boundary (i.e, 2.6.10 vs 2.6.10 + some patches) We -# currently assume that all meaningful version boundaries are marked by a tag. -# We don't care what the tag is, just that something exists. - -# Git/Cogito store the top-of-tree "commit" in .git/HEAD -# A list of known tags sits in .git/refs/tags/ -# -# The simple trick here is to just compare the two of these, and if we get a -# match, return nothing, otherwise, return a subset of the SHA-1 hash in -# .git/HEAD - -sub do_git_checks { - open(H,"<.git/HEAD") or return; - my $head = ; - chomp $head; - close(H); +cd "${1:-.}" || usage - opendir(D,".git/refs/tags") or return; - foreach my $tagfile (grep !/^\.{1,2}$/, readdir(D)) { - open(F,"<.git/refs/tags/" . $tagfile) or return; - my $tag = ; - chomp $tag; - close(F); - return if ($tag eq $head); - } - closedir(D); - - push @LOCALVERSIONS, "g" . substr($head,0,8); -} - -if ( -d ".git") { - do_git_checks(); -} +# Check for git and a git repo. +if head=`git rev-parse --verify HEAD 2>/dev/null`; then + # Do we have an untagged version? + if [ "`git name-rev --tags HEAD`" = "HEAD undefined" ]; then + printf '%s%s' -g `echo "$head" | cut -c1-8` + fi -printf "-%s\n", join("-",@LOCALVERSIONS) if (scalar @LOCALVERSIONS > 0); + # Are there uncommitted changes? + if git diff-files | read dummy; then + printf '%s' -git_dirty + fi +fi -- 2.34.1