Store BR2_DEFCONFIG in .config, and use it to update the original input
defconfig file after updating the configuration. When a config is
created by using the BR2_DEFCONFIG=... option, this is saved in the
.config file; later runs of savedefconfig will update that same location.
It is also possible to configure this place in the interactive
configuration.
The BR2_DEFCONFIG value itself is not saved into the generated
defconfig, since Kconfig considers it at its default. This is
intentional, to avoid hard-coding an absolute path in the defconfig.
It will anyway be set again when the defconfig is used with the
'make BR2_DEFCONFIG=... defconfig' command.
As a side-effect of this change, the *config options have been moved out
of the BR2_HAVE_DOT_CONFIG condition. This doesn't make any functional
difference, because the .config is still not read for the *config targets.
However, the defconfig and savedefconfig targets do need to include
.config now, which makes them slightly slower.
[Peter: slightly tweak help text]
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Acked-by: Luca Ceresoli <luca@lucaceresoli.net>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
The filesystem overlay is a tree that is copied over the target fs
after building everything - which is currently usually done in the
post-build script.
[Peter: don't ignore missing directories]
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Acked-by: Luca Ceresoli <luca@lucaceresoli.net>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Reuse part of board-support.txt, and remove that one because it
was unused.
[Peter: minor tweaks to text]
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
This patch will add <pkg>_CONFIG_FIXUP variable to buildroot infra.
It's purpose is to inform buildroot that the package in question
contains some $(STAGING_DIR)/usr/bin/*-config files and that we
want to automatically fix prefixes of such files.
It is often the case that many packages call these
files during their configuration step to determine 3rd party
library package locations and any flags needed to link against them.
For example:
Some package might try to check the existense and linking flags
of NSPR package by calling $(STAGING_DIR)/usr/bin/nspr-config --prefix.
Without this fix. NSPR would return /usr/ as it's prefix which is
wrong when cross-compiling.
Correct would be $(STAGING_DIR)/usr.
All packages that have <pkg>_INSTALL_STAGING = YES defined and
also install some config file(s) into $(STAGING_DIR)/usr/bin must
hereafter also define <pkg>_CONFIG_FIXUP with the correspondig
filename(s).
For example:
DIVINE_CONFIG_FIXUP = divine-config
or for multiple files:
IMAGEMAGICK_CONFIG_FIXUP = Magick-config Wand-config
Signed-off-by: Stefan Fröberg <stefan.froberg@petroprogram.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Several projects use the kernel style O=<dir> syntax to build out of tree,
and atleast uClibc doesn't check that it was explictly passed on the command
line, so setting it in the environment breaks the build.
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Support scripts (in support/) may need to parse the .config file, so give
them an easy access to it, by exporting BUILDROOT_CONFIG with the fully-
qualified path to .config.
Also, post-build scripts may need to reference a few locations, so export
those, too.
Note: we export both O and BASE_DIR. Although they are the same, BASE_DIR
is used internally, while O is used on the command line, which makes it a
bit ambiguous to know which to use. As users use O= on the command line,
they will probably tend to use that in their post-build scripts.
Update doc accordingly.
[Peter: fixed typo]
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Arnout Vandecappelle <arnout@mind.be>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
cc: Peter Korsgaard <jacmet@uclibc.org>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
After the modification of the <pkg>_PATCH semantic, let's update the
documentation accordingly.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Add overall description of LIBFOO_DEVICES and LIBFOO_PERMISSIONS.
Fix line numbers.
Cc: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Acked-by: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Creating a symbolic link for the download directory is really not a
useful suggestion, since we have the much better solution of the
BUILDROOT_DL_DIR environment variable. So emphasize this solution
instead, and remove the suggestion of the symbolic link.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
The development files for zlib or netpbm are not needed, and neither
is python-xcbgen. None of these are present in the chroot used in the
autobuilders, and anyway if those would be needed, it would be a
Buildroot bug and not something to be mentionned in the documentation.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
The FAQ is before the section on package development, and only covers
user issues, not developer issues, so the FAQ entry about 'depends on'
vs. 'select' really doesn't have its place here.
And the 'depends on' vs. 'select' issue is already covered in a later
section, see
http://buildroot.org/downloads/manual/manual.html#depends-on-vs-select.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
This commit adds a new section
Working with Buildroot
-> Details in configuration
-> Cross-compilation toolchain
that gives a lot of details about our three toolchain backends. It
takes some elements that were previously later in the manual in
"Embedded basics" and in "External toolchain" and combines them with
more details about internal backend and Crosstool-NG backend.
The "Embedded basics" section becomes empty and is therefore
removed. A few elements have been lost in the process, but they were
considered to not be really useful, especially located so far in the
manual.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
As discussed with Samuel Martin, there are a few questions about some
Buildroot configuration aspects that come very often on the IRC
channel and on the mailing-list. Topics such as the /dev management
and init systems are often raised.
Therefore, this patch adds a new section that provides details about
the Buildroot configuration possibilities. It does not aim at
replacing the help text of each configuration option, but rather to
complement them by providing more background. Having those
informations in the manual will also make it easier for us to point
newcomers to the right place in the documentation when they have
questions.
Note that this section will replace the "Embedded basics" section that
comes way too late in the manual. This is done in a followup commit.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Acked-by: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
The complete list can be obtained with the following command:
grep "_HOOKS[ ]\+?=" package/pkg-generic.mk
Signed-off-by: Davide Viti <zinosat@tiscali.it>
Acked-by: Samuel Martin <s.martin49@gmail.com>
Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
The depends-on-vs-select part of the manual really deserves its own
section title (especially because it is referred to and the xref gets
a 'sinpara' in PDF if the section doesn't have a title). So restructure
the surrounding sections to reduce the section nesting depth.
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Acked-by: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
The tutorial for autotools-package and cmake-package currently gives
the bad example of setting _INSTALL_TARGET to YES, which is the default.
So change this into an example with _INSTALL_TARGET = NO, and explain in
which case this is relevant.
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Acked-by: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Acked-by: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Various consistency and correctness improvements.
Also removing some sentences that are not or no longer relevant.
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Acked-by: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Minor grammatical and spelling tweaks to the manual content.
Signed-off-by: Simon Dawson <spdawson@gmail.com>
Acked-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Acked-by: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Using the internal Buildroot toolchain backend, makeinfo, whom belongs to
the texinfo package, is required to build gcc and gdb.
Signed-off-by: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
- update "Understanding how to rebuild packages" section
- add "Understanding when a full rebuild is necessary" section
Signed-off-by: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Consider the second chapter: "starting-up", as a tutorial.
Assuming that, using.txt only contains the very first commands used to get
configure and build its very first target system.
So, the following subsection from using.txt have been to common-usage.txt:
- Offline builds
- Building out-of-tree
- Environment variables
Signed-off-by: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
