external.desc must be present when using a br2-external tree. The
documentation notes this later in the text, but the file is missing
from the initial overview of files.
Fixes bug #11481.
Signed-off-by: Philipp Wagner <mail@philipp-wagner.com>
Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
This variable is needed for upgrading packages with scancpan.
Signed-off-by: Francois Perrad <francois.perrad@gadz.org>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Tk Open Systems has sponsored the Buildroot Association to organize
the Buildroot Developers Meeting.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Explain how this can be used with git send-email, and how git can be
configured to use it automatically.
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
As discussed in [1], our guideline for the ordering of 'depends on'
lines is not written down. Fix that.
[1] http://lists.busybox.net/pipermail/buildroot/2018-October/232413.html
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Better late than never: let's thank Scaleway who provided some
excellent hosting conditions for our March 2018 Hackathon in Paris.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This commit removes Google and Mind as "Current sponsors" and credits
them as "Past sponsors" for the FOSDEM 2018 Buildroot Developers
Meeting.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Due to excessive spamming on Freenode, the IRC channel is currently
restricted to registered users. Since this may not be obvious for
people not familiar with IRC, let's mention it on our website, with a
link to the relevant documentation.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Cc: Thomas De Schampheleire <patrickdepinguin@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Some users of kconfig need some packages to be built before their
kconfig infra be used.
For example, the linux kernel, starting with 4.16, needs flex and bison
to generate the parser code. Furthermore, starting with 4.18, it will
also need the cross-compiler before parsing the kconfig stuff, because
that calls the compiler to check its features.
Currently, this is broken, even the flex/bison ones, even though they
are listed, because there is no way to define dependencie that are
guaranteed before the (visual) configurators. For example:
$ make distclean
$ make menuconfig
--> enable the linux kernel, choose a defconfig, save, exit
$ make linux-menuconfig
[...]
HOSTCC scripts/basic/fixdep
HOSTCC scripts/kconfig/conf.o
YACC scripts/kconfig/zconf.tab.c
/bin/sh: bison: command not found
LEX scripts/kconfig/zconf.lex.c
scripts/Makefile.lib:196: recipe for target 'scripts/kconfig/zconf.tab.c' failed
make[3]: *** [scripts/kconfig/zconf.tab.c] Error 127
make[3]: *** Waiting for unfinished jobs....
/bin/sh: flex: command not found
scripts/Makefile.lib:188: recipe for target 'scripts/kconfig/zconf.lex.c' failed
make[3]: *** [scripts/kconfig/zconf.lex.c] Error 127
Makefile:528: recipe for target 'rpc_defconfig' failed
make[2]: *** [rpc_defconfig] Error 2
linux/linux.mk:511: recipe for target '/home/ymorin/dev/buildroot/buildroot/output/build/linux-4.17.11/.config' failed
make[1]: *** [/home/ymorin/dev/buildroot/buildroot/output/build/linux-4.17.11/.config] Error 2
Makefile:79: recipe for target '_all' failed
make: *** [_all] Error 2
So, we introduce a new type of dependencies for kconfig-based packages,
that are guaranteed to be built and installed before the (visual)
configurators are called.
Since those dependencies are phony targets and therefore always out of
date, a normal dependency would cause the .config target to be rebuilt
on each invocation of make. So we use an order-only pre-requisite, like
is done for the patch dependency.
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Arnout Vandecappelle <arnout@mind.be>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Cc: Jan Kundrát <jan.kundrat@cesnet.cz>
Tested-by: Jan Kundrát <jan.kundrat@cesnet.cz>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Currently, the wording in the manual instructs the user to generate a
tarball from "the contents of the +output/host+ directory".
This is pretty confusing, because taken literally, this would amount to
running a command like:
tar cf my-sdk.tar -C output/host/ .
This creates a tarbomb [0], which is very bad practice, because when
extracted, it creates multiple files in the current directory.
What one really wants to do, is create a tarball of the host/ directory,
with something like:
tar cf my-sdk.tar -C output host/
However, this is not much better, because the top-most directory would
have a very common name, host/, which is pretty easy to get conflict
with when it gets extracted.
So, we fix that mess by giving the top-most directory a recognisable
name, based on the target tuple, which we also use as the name of the
archive (suffixed with the usual +.tar.gz+.) We offer the user the
possibility to override that default by specifying the +BR2_SDK_PREFIX+
variable on the command line.
Since this is an output file, we place it in the images/ directory.
As some users expressed a very strong feeling that they do not want to
generate a tarball at all, and that doing so would badly hurt their
workflows [1], we actually prepare the SDK as was previously done, but
under the new, intermediate rule 'prepare-sdk'. The existing 'sdk' rule
obviously depend on that before generating the tarball.
We choose to make the existing rule to generate the tarball, and
introduce a new rule to just prepare the SDK, rather than keep the
existing rule as-is and introduce a new one to generate the tarball,
because it makes sense to have the simplest rule do the correct thing,
leaving advanced, power users use the longest command. If someone
already had a wrapper that called 'sdk' and expected just the host
directory to be prepared, then this is not broken; it just takes a bit
longer (gzip is pretty fast).
Update the manual accordingly.
[0] https://en.wikipedia.org/wiki/Tar_(computing)#Tarbomb
[1] http://lists.busybox.net/pipermail/buildroot/2018-June/thread.html#223377
and some messages in the ensuing thread...
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Wolfgang Grandegger <wg@grandegger.com>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Cc: Arnout Vandecappelle <arnout@mind.be>
Cc: Stefan Becker <chemobejk@gmail.com>
Cc: Trent Piepho <tpiepho@impinj.com>
Signed-off-by: "Yann E. MORIN" <<a href="mailto:yann.morin.1998@free.fr" target="_blank">yann.morin.1998@free.fr</a>><br>
Reviewed-by: Stefan Becker <chemobejk@gmail.com>
Signed-off-by: "Yann E. MORIN" <<a href="mailto:yann.morin.1998@free.fr" target="_blank">yann.morin.1998@free.fr</a>><br>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
The oldest gcc that is known to work with current Buildroot is that of
RHEL 6, version 4.4.
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
scancpan is now in utils not in supports/scripts
Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
The manual is GPL-2, and points to the COPYING file in the repository.
When we do a rendering of the manual for a specific version, that URL
is currently always poitning to the latest version of the COPYING file.
If we ever have to change the content of that file (e.g. to add a new
exception, more clarifications, a license change, or whatever), then
an old manual would point to that newer version, which would then be
incorrect.
Include the sha1 of the commit in the URL, so that the manual always
point to the tree at the time the manual was rendered, not the time
it is consulted. Contrary to the informative text above, use the full
sha1, not the shortened one.
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Thomas De Schampheleire <patrickdepinguin@gmail.com>
Cc: Luca Ceresoli <luca@lucaceresoli.net>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Update documentation about adding meson-based packages with instructions for
using pkg-meson infrastructure.
Signed-off-by: Eric Le Bihan <eric.le.bihan.dev@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
For various reasons, we've always suggested users to avoid using a
branch as version string for their packages, because it does not work
as a they would expect:
- it is not reproducible, because the branch may change between two
builds that are done at different times;
- it does not even follow the branch, as Buildroot anyway generates
a local tarball, which it will reuse on subsequent builds.
Furthermore, since we fetch and not pull, any existing local branch
is not updated.
Yet, until recently, using a branch name would just work (with the
above limitations): the git tree was cloned, the branch checked out,
and the tarball created.
But with the advent of the git caching, using a branch name does not
work anymore. Indeed, we now do a git-fetch, and that does not create
a local master branch. So we can't check out master, because it does
not exist locally. And for other branches, as noticed above, the local
branch does not get udpated to the remote one.
Furthermore, the local branches are only created by chance, again as a
side-effect of trying to fetch the "special refs".
So, we can't say that we reliably support the use of a branch name.
Update the manual to state that using a branch does not work. Remove
the 'stable' example, as it looked like the name of a stable branch;
instead, replace it with a version string that ressemble a tag.
Fix the layout of the manual by making the version examples an actual
bulleted list.
Note: the above is only entirely true for git. For Mercurial, CVS and
subversion, the status may be mixed, but nonetheless, using branches is
still a bad idea, if at least because it is not reproducible, and
because Buildroot does not even follow the branch. So, we do not
differentiate between the various SCMs, and just flatly state that using
a branch name is not supported.
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Thomas De Schampheleire <patrickdepinguin@gmail.com>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Cc: Maxime Hadjinlian <maxime.hadjinlian@gmail.com>
Cc: Peter Korsgaard <peter@korsgaard.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Update the documentation accordingly.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
[yann.morin.1998@free.fr: slight rephrasing in error message, update manual]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
