We have switched opkg to sha256 a long time ago, and shrinking package
lists is useful for systems that are running low on RAM
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Change getver.sh to append a short Git commit hash to the end of the artifical
revision number. This way we still have order- and comparable commit numbers
but also a direct relation to the Git commit.
The new output format will look like "r2400+2-882472e" for dirty trees or like
"r2402-882472e" for clean ones.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
The SDK Makefile still trys to copy the docs folder which was removed
with 882f4d2d63. This causes an SDK build
error.
All other removals are just cleanup.
Signed-off-by: Mathias Kresin <dev@kresin.me>
If something goes wrong and script can't find upstream revision it will
return something like:
r2220
which looks like a valid upstream revision 2220. We cant' distinguish it
from e.g. 2200 upstream commits and 20 local ones.
The new format still provides revision number but also points clearly
that is may be not the upstream one:
r0+2220
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Acked-by: John Crispin < john@phrozen.org>
So far we were displaying "local" which could be misinterpreted. It
wasn't possible e.g. to say if src-link feed was initialized or not.
Hopefully "X" makes (a bit) more sense.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
It's always hard to find a reasonable width that will make everyone
happy. This one at least makes "telephony" (one of default feeds) name
fit the column and hopefully isn't too big.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
So far, package-metadata.pl always considered the first provider of a virtual
package to be the default variant which might deviate from what buildroot
considers to be the default.
Change the Kconfig dependency / select code generation for virtual package
providers to consider the DEFAULT_VARIANT to be the primary provider and only
fall back to the first provider if no default variant was explicitely tagged.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
Currently the code emitting dependencies for provide candidates is overwriting
the specification calculated by the previous conditional dependency handling
code, rendering dependencies on virtual PROVIDES packages in conjunction with
conditional dependencies unusable.
Instead of overwriting, append the PROVIDES dependency spec in order to fix
using DEPENDS on virtual provider packages in conjunction with conditions.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
This is outdated and bad practice, general dependencies should be documented and leave the rest up to the user.
Signed-off-by: Daniel Engberg <daniel.engberg.lists@pyret.net>
When selecting devices from the Target Devices menu, the brand choices
of naming makes it confusing to find particular devices by name, as the
sorting is case sensitve. AirTight came after ALFA, and devolo and
jjPlus both came after Zyxel.
This does _not_ apply to the Target Profile list, as that includes
"Default - all profiles" inside the profile list.
Signed-off-by: Karl Palsson <karlp@etactica.com>
TARGET_MULTI_PROFILE and TARGET_PER_DEVICE_ROOTFS get some help text to
try and clarify their behaviour.
Signed-off-by: Karl Palsson <karlp@etactica.com>
If core packages are overridden, CONFIG_OVERRIDE_PKGS is set
based on the scan order of packages, which eventually causes
that config value to be modified on each build and with
that causes the build process to warn for configuration
being out of sync.
This commit changes the CONFIG_OVERRIDE_PKGS to be sorted
and prevents that false warning.
Signed-off-by: Zefir Kurtisi <zefir.kurtisi@neratec.com>
Add a new option to each device in multi-profile mode, allowing to provide
a list of packages to add or remove. In case of added packages, the user
must take care that these are selected to be built.
Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
Dependencies on purely virtual packages (satisfied by PROVIDES) that were
not using "selects" ("+" flag) would be prepended with the prefix
"PACKAGE_" twice, breaking the first alternative.
Signed-off-by: Matthias Schiffer <mschiffer@universe-factory.net>
Move the "which svn" and "which git" calls next to the timestamp commands
using those tools to not prematurely fail on systems where svn or git are
not present.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
9pfs is used by kvm to share files between host and guest,
add proper config option to enable it.
Signed-off-by: Matteo Croce <matteo.croce@canonical.com>
Fix the scripts/remote-gdb script when CONFIG_BUILD_SUFFIX is set.
CONFIG_BUILD_SUFFIX extends the name of the folder build_dir/target*
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
Now that the "sysupgrade-nand" step is used by non-NAND targets as well,
rename it to "sysupgrade-tar" to make it more generic.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
Older git versions seem output the original argument to stdout if there
is no upstream, presumably because they try to do things with it
internally. This can be prevented by passing --verify to it, which
should be safe on newer git versions.
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Instead of assuming master is the current branch and origin the right
upstream, try to get both dynamically. If the current branch is not
tracking any upstream, use the origin of the master branch.
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
This is not a valid option in older git version, used in e.g. RHEL6.
Reported-by: Steven Haigh <netwiz@crc.id.au>
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Change the revision output to r<upstream-revision>+<local commits> so
it is easier to get the base revision (and see if there are local
commits).
Example:
$ ./scripts/getver.sh
r794+3
$
Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
Instead of ignoring all metadata for package/kernel/linux, process it
and only suppress emitting config data to tmp/.config-package.in
This ensures that packages that select kmod-* packages can inherit their
depdendencies.
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This patch adds support of Mikrotik yaffs2 filesystem image for kernel file
and tools/kernel2minor package.
We neede this to boot kernel through RouterBoot on new Mikrotik NOR flash devices.
Signed-off-by: Sergey Sergeev <adron@yapic.net>
When using scripts/feeds upgrade the .config needs to be
updated but the code to do so was also autocreating a
.config if one didn't exist. This is counter-productive
when you have not yet used menuconfig (or other config targets)
because things like selecting or deselecting CONFIG_ALL
(to build all package by default) only works if the
package selection has not already been done via an
existing .config selection.
Signed-off-by: Daniel Dickinson <lede@daniel.thecshore.com>
Provide HTTPS URL when possible, try to keep 8 mirrors per entry and spread
over several locations of the world. Since most active contributors are in
US/CA and/or EU prioritize mirrors that are within those regions if possible.
Signed-off-by: Daniel Engberg <daniel.engberg.lists@pyret.net>
Apparently symlink-tree has not been used in quite some time as it
fails to symlink the always required config dir
Also, if we pulled from git but .git is missing we get
many error messages on the symlinked tree without this
patch (which symlinks .git, if present)
Signed-off-by: Daniel Dickinson <openwrt@daniel.thecshore.com>
According to gzip 1.7 release note:
The GZIP environment variable is now obsolescent; gzip now warns if
it is used, and rejects attempts to use dangerous options or operands.
You can use an alias or script instead.
Fix this warning by using pipe instead
Signed-off-by: Syrone Wong <wong.syrone@gmail.com>
Introduce a new symbol ALL_NONSHARED which selects all non-sharable packages
by default. This option is mainly intented for buildbot setups to build the
target dependant software subset only.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
Add a new string symbol "CONFIG_TARGET_SUBTARGET" which contains the name of
the chosen subtarget or "generic" if there are no subtargets available.
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
Path to the Git repository directory can be overriden by using the '$GIT_DIR'
environment variable. This patch improves detection of Git repository by using
'git-rev-parse', which respects '$GIT_DIR' environment variable, instead of just
checking the existence of '.git' directory.
Signed-off-by: Vasilis Tsiligiannis <acinonyx@openwrt.gr>
SVN-Revision: 49165
Future Open Mesh u-boot versions are changing the check of the image files
(vmlinux, rootfs) from md5 to sha256. Having both in them should be enough
to ensure backward and forward compatibility.
Signed-off-by: Sven Eckelmann <sven.eckelmann@open-mesh.com>
SVN-Revision: 49140
The --mtime argument to 'tar' sets the modification time for all files within
the archive, which determines the timestamp files will get when they are
extracted. In this case, rootfs and other tarballs will get mtimes which
correspond to the last commit timestamp of the build system, as reported by
git/subversion.
This is a step towards reproducible image builds.
Signed-off-by: bryan newbold <bnewbold@robocracy.org>
Signed-off-by: Alexander Couzens <lynxis@fe80.eu>
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
SVN-Revision: 48586
SOURCE_DATE_EPOCH is the date of the last modified file using git/svn
as date source.
See https://reproducible-builds.org/specs/source-date-epoch/
Signed-off-by: Alexander Couzens <lynxis@fe80.eu>
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
SVN-Revision: 48584
date -r $unix_timestamp on bsd is equal to date -d @$unix_timestamp on
linux. To support reproducible builds and not loosing every timestamp
it's required to convert a unix timestamp into human readable timestamp
./scripts/portable_date $unix_timstamp +%T
Signed-off-by: Alexander Couzens <lynxis@fe80.eu>
SVN-Revision: 48583
This is useful to just use the kmods from an official build while supplying
base packages from a custom feed or the other way around; for just overriding
the kmods with a local repo while using official repos for the rest.
Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>
SVN-Revision: 48475
The Apache Software Foundation offers diverse download mirros.
For packaging Apache software a new alias @APACHE is defined.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
SVN-Revision: 48270
Cleanup the @GNOME source download location definitions:
* remove dead and stale mirrors
* adjust to changes at directory structure
* add one new working mirror
Signed-off-by: Hannu Nyman <hannu.nyman@iki.fi>
SVN-Revision: 47825
Use similar approach as r47461 to reduce output for busybox config.
Since r39435 CONFIG_BUSYBOX_CUSTOM=y has caused the addition of
all ~260 busybox config options to the diffconfig output even if
only one option has been changed.
This patch eliminates the unchanged busybox config options from the output
and leaves only the actually modified options.
Signed-off-by: Hannu Nyman <hannu.nyman@iki.fi>
SVN-Revision: 47463
These are from today's master branch of:
http://git.savannah.gnu.org/gitweb/?p=config.git;a=tree
In particular it adds support for ARC architecture plus some more
improvements and fixes.
This patch is built-tested against NetGear WNDR3800.
Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
Cc: Florian Fainelli <florian@openwrt.org>
Cc: Imre Kaloz <kaloz@openwrt.org>
SVN-Revision: 47360
This change adds support for specifying a build ID for kernel modules.
This is done by setting PKG_BUILD_ID to a hexadecimal string, which will
then be passed to the kernel linker. In addition, when this flag is set,
the build ID debug symbol (.note.gnu.build-id) will not be stripped from
the kernel module. This symbol is exported in sysfs by the kernel (if
the kernel is compiled with CONFIG_KALLSYMS) and so can be used to
uniquely identify a version of a kernel module in a running kernel. This
is useful for keeping track of different versions of a module when doing
experiments and development.
Modules that specify the build ID will be ~100 bytes larger (depending
on the length of the build ID specified). There is no size difference
for kernel modules that do not set this variable.
Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk>
SVN-Revision: 47290
The u-boot on Open Mesh devices checks the whole transfered image against a
md5sum. This is stored inside the option filemd5sum inside the
fwupgrade.cfg. The bootloader will not check it when this setting is
missing and could therefore write invalid images to the flash.
Signed-off-by: Sven Eckelmann <sven@open-mesh.com>
SVN-Revision: 46925
kernel.org now suggests a different mirror address. this one also
support IPv6 connections and was faster for me.
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
SVN-Revision: 46875
several packages reported different file order between builds
make binutils, kmod-sched reproducible
Signed-off-by: Dirk Neukirchen <dirkneukirchen@web.de>
SVN-Revision: 46859
Add a switch to scripts/feeds that allows listing the feeds with their
currently checked out revisions in feeds.conf compatible format.
This allows providing a feeds.conf for public builds to make replication
of the build easier.
Signed-off-by: Jonas Gorski <jogo@openwrt.org>
SVN-Revision: 46706
This tool avoids generating the redboot script directly from Makefile, which
can get really complicated when adapting image/Makefile to the new IB system.
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Signed-off-by: Jonas Gorski <jogo@openwrt.org>
SVN-Revision: 46488
This patch is a modified version of the patch being discussed at here:
https://patchwork.ozlabs.org/patch/471303/
from Martin Strbacka <martin.strbacka@nic.cz>
My version modifies scripts/feeds so that an error with one of the feeds just
raises the error flag, but script continues and tries to update the other
feeds. After all feeds have been updated, the script returns 1 if at least
one feed failed, and 0 on success with all feeds. The user can then utilise
the status in his build script, if he wants.
signed-off-by: Hannu Nyman <hannu.nyman@iki.fi>
SVN-Revision: 46374
As a follow-up to r46026, this commit sets the modification
times of files inside the tarballs to deterministic values.
It uses the date of the last git or svn commit and falls
back to the old behavior if those are not available.
Signed-off-by: Reiner Herrmann <reiner@reiner-h.de>
SVN-Revision: 46360
lookup_target was trampling the $feed variable, resulting in the -p flag
no longer preferentially installing from the named feed.
Make sure to use a local variable for this instead.
Signed-off-by: Karl Palsson <karlp@remake.is>
SVN-Revision: 46120
When creating control.tar.gz, data.tar.gz and $package.ipk
tar compresses them with default gzip options.
This includes build timestamps in their gzip headers.
By setting the GZIP env variable to -n, gzip no longer embeds
them, which is a step towards reproducibility.
See also [1] for more detailed motivations.
[1]: https://wiki.debian.org/ReproducibleBuilds/About
Signed-off-by: Reiner Herrmann <reiner@reiner-h.de>
SVN-Revision: 46026
In r45785 ixp4xx was changed to use a common image prefix also for
kernels, but the script creating them was not updated to generate the
expected filenames.
Fix this by letting arm-magic.sh respect $IMG_PREFIX for the output
kernel file names as well.
Signed-off-by: Jonas Gorski <jogo@openwrt.org>
SVN-Revision: 45803
Hello,
if you run:
./scripts/feeds clean
It removes ./feeds folder but not ./package/feeds/ which is full of dangling links then. This patch fixes it.
Best Regards,
Martin Strbačka
Signed-off-by: Martin Strbacka <martin.strbacka@nic.cz>
SVN-Revision: 45738
mkits.sh help currently shows dtb file as optional, but generates an
invalid its file when this option is unspecified.
We're fixing this problem by removing the use of the sed command and
just including variables instead.
Signed-off-by: Mathieu Olivari <mathieu@qca.qualcomm.com>
SVN-Revision: 45659
Split out kmods from ALL to make it easier to create local builds that
are compatible kmod-wise with releases.
Signed-off-by: Jonas Gorski <jogo@openwrt.org>
SVN-Revision: 44830
Git internals are referenced by .git which isn't necessarily a
directory. It may also be a file that references the actual .git
directory using the gitdir directive.
If .git is assumed to be a directory the build will not be able to get
the correct version when openwrt is included as a git submodule because
when used as a submodule .git will actually be a file referencing to a
subdirectory in the parent's git dir.
When the correct version is not detected some image generation tools
will fail because the OpenWrt string will be 'OpenWrtunknown' which is
too long for some header formats.
Signed-off-by: Felix Kaechele <heffer@fedoraproject.org>
SVN-Revision: 44452
Remove all rpath entries which do not point to a location below /lib or
/usr/lib and which do not begin with '$ORIGIN'.
Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>
SVN-Revision: 44377
With this change, override information is now parsed from the metadata
and put in the %packages hash. A new hash - %overrides - is created and
exported, to be used during the .config-package.in generation.
If an override is detected, a new option CONFIG_OVERRIDE_PKGS will be
created in the .config, and will contain a space-separated list of all
the overridden packages.
Signed-off-by: Mathieu Olivari <mathieu@qca.qualcomm.com>
SVN-Revision: 44336
Currently, replacing a package available in openwrt.git requires
modifications in openwrt.git, or requires duplicating the package in a
feed but with a different name, which causes all kind of problems
related to dependencies (all packages selecting it would have to be
modified accordingly to select the new package).
With this change, if a package with the same name is present both in
feeds/ and package/ folders, the one in feeds/ can override the one
in package/, both in the menuconfig and during the build, by passing the
"-f" option to "./scripts/feeds install"
This mechanism is particularly useful for vendor tree, or in general for
application which needs to replace one particular package which exists
within openwrt.git by a custom/newer version.
Signed-off-by: Mathieu Olivari <mathieu@qca.qualcomm.com>
SVN-Revision: 44334
Do not output faulty ".ko" dependency if a scanned .ko file has an empty
"depends=" specification, also replace the `grep | sed | awk` chain with a
single sed program.
Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>
SVN-Revision: 44206
Currently, replacing a package available in openwrt.git requires
modifications in openwrt.git, or requires duplicating the package in a
feed but with a different name, which causes all kind of problems
related to dependencies (all packages selecting it would have to be
modified accordingly to select the new package).
With this change, if a package with the same name is present both in
feeds/ and package/ folders, the one in feeds/ can override the one
in package/, both in the menuconfig and during the build, by passing the
"-f" option to "./scripts/feeds install"
This mechanism is particularly useful for vendor tree, or in general for
application which needs to replace one particular package which exists
within openwrt.git by a custom/newer version.
Signed-off-by: Mathieu Olivari <mathieu@qca.qualcomm.com>
SVN-Revision: 44076
When the initial glob() attempt on a path specified with "source" statement
yields no result, then retry the globbing on the same path with the directory
part of the currently processed file prepended.
This allows us to reference Config.in files relative to their parent instead
of relative to the top dir.
Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>
SVN-Revision: 43652
Plain "remote" results in failure to connect using the gdb built with
the toolchain. (On atheros target at least) extended-remote also allows
"run" to restart the target process.
Signed-off-by: Karl Palsson <karlp@remake.is>
SVN-Revision: 43596
Many packages define already metadata about their license (PKG_LICENSE),
but this is only included in the ipk files.
This change allows to create the information also on the build-host,
to get an overview on the used licenses.
In the full list, also all packages without this info are shown
Signed-off-by: Thomas Langer <thomas.langer@lantiq.com>
SVN-Revision: 43070
[base-files] shell-scripting: fix wrong usage of '==' operator
normally the '==' is used for invoking a regex parser and is a bashism.
all of the fixes just want to compare a string. the used busybox-ash
will silently "ignore" this mistake, but make it portable/clean at least.
this patch does not change the behavior/logic of the scripts.
Signed-off-by: Bastian Bittorf <bittorf@bluebottle.com>
SVN-Revision: 42911
pts/feeds update -a" can fail rather silently for feeds using git, as
the script does not pause when updating a feed fails. Instead it prints the
error message and calmly continues to the next feed. It is very easy to
overlook update errors with the feeds updated first, as their text scrolls
rapidly away from the screen.
This behaviour has not been a big problem with svn feeds, as svn update stops
with a conflict message and interactively forces the user to resolve or
postpone the conflict. In any case the svn error is noticed by the user.
Majority of the feeds use now git, so this silent failure can affect users
doing private builds in an increasing amount.
Below is an example of update failing and script continuing:
perus@v1404:/Openwrt/barrier$ ./scripts/feeds update -a
Updating feed 'packages' from
'https://github.com/openwrt/packages.git;for-14.07' ...
remote: Counting objects: 17, done.
remote: Compressing objects: 100% (15/15), done.
remote: Total 17 (delta 10), reused 8 (delta 1)
Unpacking objects: 100% (17/17), done.
From https://github.com/openwrt/packages
62031da..dc26009 for-14.07 -> origin/for-14.07
Updating 62031da..dc26009
error: Your local changes to the following files would be overwritten by merge:
utils/collectd/Makefile
Please, commit your changes or stash them before you can merge.
Aborting
failed.
Updating feed 'luci' from 'http://git.openwrt.org/project/luci.git;luci-0.12' ...
Already up-to-date.
Create index file './feeds/luci.index'
Updating feed 'routing' from
'https://github.com/openwrt-routing/packages.git;for-14.07' ...
...
The script prints "failed.", but does not break the updating process. The
"update_feed" function returns an error code 1, but that value is not checked
in the "update" function, which continues to the next feed.
Return 1 as error:
https://dev.openwrt.org/browser/trunk/scripts/feeds#L547
Call to update_feed without any error monitoring:
https://dev.openwrt.org/browser/trunk/scripts/feeds#L585
The included patch makes the feeds script to stop updating after failing to
update a feed.
The script continues to the refresh_config step despite a possible failure in
updating, so the stopping action just prevents the other feeds from updating
and makes the error more clearly visible.
Signed-off-by: Hannu Nyman <hannu.nyman@iki.fi>
SVN-Revision: 42891
I defined a new download method @SAVANNAH in include/download.mk and scripts/download.pl,
and converted quilt and qemu to use that method.
Signed-off-by: Hannu Nyman <hannu.nyman@iki.fi>
SVN-Revision: 42840
This changeset implements a new menuconfig option to generate separate
repositories for each enabled package feed instead of one monolithic one.
Signed-off-by: Jo-Philipp Wich <jow@openwrt.org>
SVN-Revision: 42002
r41359 broke support for building ubinized images which do
include a kernel volume.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
SVN-Revision: 41368
ubinize-image.sh previously used ${var:offset:length} substitutions
which are not valid in standard shell.
Replace the existing parameter matching by a case ... esac expression.
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
SVN-Revision: 41347
This is a wrapper for the ubinize tool which integrates auto-generation
of the ubinize.cfg for common volume layouts with and without a kernel
volume.
It supports auto-detecting the rootfs-type and decides whether or not
to include a rootfs_data volume based on whether the rootfs is ubifs
or not (and thus is read-only and needs rootfs_data ubifs overlay).
The script allows to create layouts as found in all current
ubinize{,-overlay}.cfg files using
ubinize-image.sh --no-kernel root.{ubifs,squashfs} output.ubi $UBI_OPTS
It also includes support for adding ubootenv and ubootenv2 volumes
typically used by U-Boot for storing its environment in UBI using the
"--uboot-env" parameter.
See also
https://gitorious.org/openwrt-oxnas/openwrt-oxnas/source/target/linux/
oxnas/image/Makefile
Signed-off-by: Daniel Golle <daniel@makrotopia.org>
create mode 100755 scripts/ubinize-image.sh
SVN-Revision: 41121
Following syntax should be used to enable this feature:
src-git custom git://openwrt/custom-feed^SHA_COMMIT_ID
Signed-off-by: Luka Perkov <luka@openwrt.org>
SVN-Revision: 38172
Users may have merge.ff set to false, which will force merge commits to
be generated. The intent here is to have a fast-forward merge when
possible, so let's make sure fast-forwards are enabled.
Signed-off-by: John Szakmeister <john@szakmeister.net>
Signed-off-by: Florian Fainelli <florian@openwrt.org>
SVN-Revision: 37884
Felix Fietkau
Jo-Philipp Wich
Mathias Kresin
Rafał Miłecki
Daniel Engberg
Karl Palsson
Zefir Kurtisi
Matthias Schiffer
Matteo Croce
Hauke Mehrtens
Jonas Gorski
Sergey Sergeev
Daniel Dickinson
John Crispin
Petr Štetiar
Daniel Dickinson
Syrone Wong
John Crispin
Iblis Lin
Álvaro Fernández Rojas
Vasilis Tsiligiannis
John Crispin
Felix Fietkau
Jo-Philipp Wich
Michael Büsch
Jonas Gorski
Steven Barth
Florian Fainelli
Imre Kaloz
Luka Perkov