mirror of https://gitee.com/openkylin/linux.git
57 lines
1.3 KiB
Perl
57 lines
1.3 KiB
Perl
#!/usr/bin/perl
|
|
# Copyright 2004 - Ryan Anderson <ryan@michonline.com> GPL v2
|
|
|
|
use strict;
|
|
use warnings;
|
|
use Digest::MD5;
|
|
require 5.006;
|
|
|
|
if (@ARGV != 1) {
|
|
print <<EOT;
|
|
Usage: setlocalversion <srctree>
|
|
EOT
|
|
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);
|
|
|
|
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();
|
|
}
|
|
|
|
printf "-%s\n", join("-",@LOCALVERSIONS) if (scalar @LOCALVERSIONS > 0);
|