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package/kmod: add compression support for the host variant

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The kernel may install compressed modules. At the end of the build, we
then run depmod, to generate modules.dep and a few assorted files, so
that loading modules works properly on the target (loading by alias,
loading dependencies...)

However, depmod needs support for compressed modules, or it would
generate empty modules.dep et al.

Uconditionally adding support for gz and xz, and the required deps,
was deemed too much of a burden [0], so we add options to enable
either or both compression.

[0] http://lists.busybox.net/pipermail/buildroot/2018-April/218410.html

Yegor Yefremov <yegorslists@googlemail.com>
Cc: Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Cc: Lucian Buga <lucianbuga@gmail.com>
Tested-by: Matt Weber <matthew.weber@rockwellcollins.com>

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
This commit is contained in:
Yann E. MORIN 2020-05-03 15:10:01 +02:00 committed by Thomas Petazzoni
parent 4ca9edaad2
commit 49547ea2ab
2 changed files with 24 additions and 0 deletions
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10
package/kmod/Config.in.host
View File

@ -4,3 +4,13 @@ config BR2_PACKAGE_HOST_KMOD
kmod is a set of tools to handle common tasks with Linux
kernel modules like insert, remove, list, check properties,
resolve dependencies and aliases.
if BR2_PACKAGE_HOST_KMOD
config BR2_PACKAGE_HOST_KMOD_GZ
bool "support gzip-compressed modules"
config BR2_PACKAGE_HOST_KMOD_XZ
bool "support xz-compressed modules"
endif

14
package/kmod/kmod.mk
View File

@ -82,6 +82,20 @@ else
KMOD_CONF_OPTS += --disable-tools
endif
ifeq ($(BR2_PACKAGE_HOST_KMOD_GZ),y)
HOST_KMOD_DEPENDENCIES += host-zlib
HOST_KMOD_CONF_OPTS += --with-zlib
else
HOST_KMOD_CONF_OPTS += --without-zlib
endif
ifeq ($(BR2_PACKAGE_HOST_KMOD_XZ),y)
HOST_KMOD_DEPENDENCIES += host-xz
HOST_KMOD_CONF_OPTS += --with-xz
else
HOST_KMOD_CONF_OPTS += --without-xz
endif
# We only install depmod, since that's the only tool used for the
# host.
define HOST_KMOD_INSTALL_TOOLS