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authorRene Scharfe <rene.scharfe@lsrfire.ath.cx>2006-01-04 19:42:03 (GMT)
committerSam Ravnborg <sam@mars.ravnborg.org>2006-01-06 19:46:21 (GMT)
commit117a93db1dcd6ed61336b27e4e2938f791c1841b (patch)
treeb869ef55f3048f125c06e70429f04c38f31bf578 /scripts/setlocalversion
parent253dfa6e465c054a73bd3b13af51c34c9d8d233d (diff)
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 <rene.scharfe@lsrfire.ath.cx> Acked-by: Ryan Anderson <ryan@michonline.com> Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Diffstat (limited to 'scripts/setlocalversion')
-rw-r--r--scripts/setlocalversion68
1 files changed, 17 insertions, 51 deletions
diff --git a/scripts/setlocalversion b/scripts/setlocalversion
index 7c805c8..f54dac8 100644
--- a/scripts/setlocalversion
+++ b/scripts/setlocalversion
@@ -1,56 +1,22 @@
-#!/usr/bin/perl
-# Copyright 2004 - Ryan Anderson <ryan@michonline.com> 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;
-Usage: setlocalversion <srctree>
-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 = <H>;
- 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 = <F>;
- 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

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