The different tools and libraries in util-linux have a lot of optional
dependencies. When we want to support those optional dependencies, we
can easily generate dependency cycles. For instance, findmount and lsblk
need udev to work correctly, but eudev and systemd both depend libblkid,
which comes from util-linux.
Normal distros (e.g. Debian) solve this by first building a minimal
package that has no dependencies at all, then build the packages that
depend on util-linux, and finally rebuild util-linux with all bells and
whistles. Solve it in Buildroot by means of the following changes:
- Split util-linux into two packages:
- util-linux-libs, providing lib{blkid,fdisk,mount,smartcols,uuid}.
- util-linux, providing both the aforementioned libs and the programs.
- Add a blind selection for util-linux-libs, i.e. it is indirectly
selected according to the util-linux options.
- Make host and target util-linux have a build dependencies on the -libs
packages.
- Make eudev and systemd have build dependencies on util-linux-libs.
This can be extended to other packages in the future but is not needed
right now because the configuration options are backward-compatible.
- Make util-linux have an optional build dependency on the package that
provides libudev (either eudev or systemd), if it is selected.
Installing util-linux overrides files installed by util-linux-libs but
this is not a problem: it's allowed for a package to overwrite files
from another package, as long as there is a dependency between the two.
util-linux-libs has a Config.in symbol for the package as a whole, but
not for the individual libraries: it simply reuses the symbols of the
full package.
The build dependency of util-linux on util-linux-libs ensures that
util-linux overwrites the files installed by util-linux-libs and not
vice versa. In practice this dependency shouldn't be needed: the only
reason for util-linux-libs to be built is to break a circular
dependency. In that case, there is already a transitive dependency of
util-linux on util-linux-libs, so adding it explicitly is redundant.
Still, better safe than sorry.
host-util-linux-libs is not needed at the moment. It can be added if we
have a dependency cycle problem later.
With this approach we don't need to patch configuration files neither
change packages other than eudev and systemd.
Other packages that require util-linux libraries and whose libraries may
be used by util-linux programs can be updated later. We also don't need
to change any existing defconfig, since all configuration options are
kept in the util-linux package.
Fixes: https://bugs.busybox.net/show_bug.cgi?id=11811
Signed-off-by: Carlos Santos <unixmania@gmail.com>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Select udev-gentoo-scripts and avoid installing the sysv init script.
Signed-off-by: Carlos Santos <unixmania@gmail.com>
[yann.morin.1998@free.fr: use a fake openrc init hook]
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
The check-package script when ran gives warnings on text wrapping
on all of these Config files. This patch cleans up all warnings
related to the text wrapping for the Config files starting with
the letter e in the package directory.
The appropriate indentation is: <tab><2 spaces><62 chars>
See http://nightly.buildroot.org/#writing-rules-config-in for more
information.
Signed-off-by: Adam Duskett <aduskett@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Commit 006a328ad6 ("util-linux: fix build with ncurses") removed
dependency on BR2_USE_WCHAR, but failed to update the reverse
dependencies of util-linux.
This commit updates comments in Config.in for BR2_USE_WCHAR for reverse
dependencies of util-linux which directly uses wchar now or when it is
pulled from other dependencies.
eudev doesn't use wchar directly, but needs C99 compiler. Autotools
generate code with wchar_t for checking C99 compiler.
Signed-off-by: Rahul Bedarkar <rahul.bedarkar@imgtec.com>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
The Gentoo wiki page is much more informative than the download directory.
This is the official homepage according to top level README.md.
Signed-off-by: Baruch Siach <baruch@tkos.co.il>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This option enables/disables installation of the eudev hardware database,
which provides various extra properties for known devices.
Enabling this option adds ~5MB to the rootfs size.
The option is enabled by default in order to preserve old behavior.
[Peter: extend commit message]
Signed-off-by: Yegor Yefremov <yegorslists@googlemail.com>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
Since a while, the semantic of BR2_PREFER_STATIC_LIB has been changed
from "prefer static libraries when possible" to "use only static
libraries". The former semantic didn't make much sense, since the user
had absolutely no control/idea of which package would use static
libraries, and which packages would not. Therefore, for quite some
time, we have been starting to enforce that BR2_PREFER_STATIC_LIB
should really build everything with static libraries.
As a consequence, this patch renames BR2_PREFER_STATIC_LIB to
BR2_STATIC_LIBS, and adjust the Config.in option accordingly.
This also helps preparing the addition of other options to select
shared, shared+static or just static.
Note that we have verified that this commit can be reproduced by
simply doing a global rename of BR2_PREFER_STATIC_LIB to
BR2_STATIC_LIBS plus adding BR2_PREFER_STATIC_LIB to Config.in.legacy.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Reviewed-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
The udev virtual package and its current providers (eudev and systemd)
have been updated to use the latest version of virtual package
infrastructure.
A provider should now select BR2_PACKAGE_HAS_UDEV and well as set a
value for BR2_PACKAGE_PROVIDES_UDEV.
Signed-off-by: Eric Le Bihan <eric.le.bihan.dev@free.fr>
Reviewed-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This patch converts udev to a virtual package. For the moment, there is only
one provider for the udev features: eudev.
Packages meant to provide udev-like features must select the symbol
BR2_PACKAGE_HAS_UDEV.
Packages depending on BR2_ROOTFS_DEVICE_CREATION_DYNAMIC_UDEV or
BR2_PACKAGE_UDEV have been converted to use the new symbol.
[Peter: move legacy symbols under 2014.05]
Signed-off-by: Eric Le Bihan <eric.le.bihan.dev@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
eudev is a userspace device management daemon. It is a standalone
version, independent from systemd. It is a fork maintained by Gentoo.
Features:
- No extra configuration options are available: Gudev is build if
libglib2 is selected.
- No dependency on hwdata as the package uses its own hardware
database (as does systemd).
eudev 1.3 is in sync with systemd v207.
[Peter: add BR2_USE_MMU dependency]
Signed-off-by: Eric Le Bihan <eric.le.bihan.dev@free.fr>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
