Now that we run scripts/setlocalversion during every build, it makes
sense to move all the localversion logic there. This cleans up the
toplevel Makefile and also makes sure that the script is called only
once in 'make prepare' (previously, it would be called every time due to
a variable expansion in an ifneq statement). No user-visible change is
intended, unless one runs the setlocalversion script directly.
Reported-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: David Rientjes <rientjes@google.com>
Cc: Greg Thelen <gthelen@google.com>
Cc: Nico Schottelius <nico-linuxsetlocalversion@schottelius.org>
Signed-off-by: Michal Marek <mmarek@suse.cz>

Do not update index on read only media.
Idea published by Christian Kujau <lists@nerdbynature.de>.

Cc: Nico Schottelius <nico@ikn.schottelius.org>
Cc: Christian Kujau <lists@nerdbynature.de>

Produce correct output for
- tagged commit (v2.6.30-rc6)
- past tagged commit (v2.6.30-rc5-299-g7c7327d9)
- no tag
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

When using trees like wireless-testing, which have untagged tags,
scripts/setlocalversion does not display any git indication for
localversion.

This patch fixes it: If git is available, but no usable tag is found,
it uses -g${head}. It skips the detection of unanottated tags via
git name-rev.
Signed-off-by: Nico Schottelius <nico@ikn.schottelius.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

Use the correct git <subcmd> syntax instead of the deprecated git-<subcmd>.
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

Don't bother doing `svn st` as it takes a retarded amount of time when
the source is cold
Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

Print svn revision in addition to git info on git-svn repos.
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

Output svn revision of latest change, instead of repo revision as thats
what we're interested in (especially when working on a branch/tag).
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

setlocalversion used to use an abbreviated git commit sha1 to generate the
tag.  This was changed in commit d882421f
"kbuild: change CONFIG_LOCALVERSION_AUTO to use a git-describe-ish format"
to use git describe to come up with a tag.  Which is nice, but git describe
sometimes can't describe the revision.
Commit 56b2f070 ("setlocalversion: do not
describe if there is nothing to describe") addressed this, but there is still
no tag generated.

So, generate a plain abbreviated sha1 tag like setlocalversion used to when
git describe comes up short.
Signed-off-by: Trent Piepho <tpiepho@freescale.com>
CC: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

The number of pending changes is pretty useless, so encoding it into the
version is just annoying by the constant shuffle in corresponding modules.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

Jan Engelhardt wrote:
> Just a note that when you run git-describe, you should probably quiten it.
>
> fatal: cannot describe 'bd7364a0fd5a4a2878fe4a224be1b142a4e6698e'
>
> This happens when tags are not present, which can happen if Linus's tree
> is sent upwards again, IOW:
>
>  machine1$  git-clone torvalds/linux-2.6.git
>  machine1$  git push elsewhere master
>
>  machine2$  git-clone elsewhere:/linux
>  machine2$  git-describe HEAD
>  fatal: cannot describe that
Signed-off-by: Sebastian Siewior <sebastian@breakpoint.cc>
Acked-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

follow git and mercurial style, include uncommitted changes detect

Cc: Frans Pop <elendil@planet.nl>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

make-kpkg modifies scripts/package/Makefile and deletes
scripts/package/builddeb as part of its build process.  Ignore these
changes so the tree isn't marked as -dirty, when it is just an
artifact of make-kpkg.  (make-kpkg clean restores the files to their
original state, and these helper scripts won't affect the final
compiled kernel in any way.)
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

If git's index file is out of date, and some files have been touched
such that their timestamp doesn't what is in the index, "git
diff-index HEAD" may show that a particular file is dirty, when in
fact it really isn't.  Running "git update-index" will update the
index to avoid these false positives.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

Change the automatic local version to have the form -nnnnn-gSHA1SUMID,
where 'nnnnn' is the number of commits since the last tag (i.e.,
2.6.21-rc7).  This makes it much more likely that the package names created
for the kernel will look "newer" to a package manager.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

This represents mercurial changesets similarly to git.  For untagged
revisions, append the changeset id.  If there are uncommitted changes,
append -dirty.  For example, -hgc60016ba6237-dirty
Signed-off-by: Aron Griffis <aron@hp.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

Compare the working copy with the last commit, instead of the index.
Signed-off-by: Uwe Zeisberger <zeisberg@informatik.uni-freiburg.de>
Acked-by: Ryan Anderson <ryan@michonline.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

adds revision suffix for untagged commits that are reachable from a tag

I'm bisecting and don't get the -g...... suffix.  The reason is, that

	git name-rev --tags HEAD

returns e.g.

	HEAD tags/v2.6.17-rc1^0~1067

which is currently good enough for setlocalversion to skip the suffix.
This introduces a dependecy to grep -E, which should be fine.
Signed-off-by: Uwe Zeisberger <zeisberg@informatik.uni-freiburg.de>
Acked-By: Ryan Anderson <ryan@michonline.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

When building Debian packages directly from the git tree, the appended
"git_dirty" is a problem due to the underscore.  In order to cause the
least problems, change that just to "dirty".
Signed-off-by: Ryan Anderson <ryan@michonline.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>

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>

If CONFIG_AUTO_LOCALVERSION is set, the user is using a git-based tree, and the
current HEAD is not referred to by any tags in .git/refs/tags/, append -g and
the first 8 characters of the commit to the version string.  This makes it
easier to use git-bisect, and/or to do a daily build, without trampling on your
older, working builds, or accidentally setting up conflicting sets of modules.
Signed-off-by: Ryan Anderson <ryan@michonline.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>