A generator of (minimal) Linux kernel configuration files.
Project description
kconfgen is a tool to manage Linux kernel configuration files.
It enables users to:
Assemble kernel configuration files from fragments;
Ensure that only minimal lists of flags are kept in version control;
Split a single kernel configuration file in fragments by topic.
Usage:
kconfgen merge
Assemble a .config file from a set of (minimal) definitions
kconfgen merge \
--kernel=/usr/src/linux-4.19.57 --arch=x86 \
defconfig.net defconfig.crypto defconfig.laptop > .configIt is also possible to generate a defconfig file, which contains only the minimal set of flags to get to the provided .config file:
kconfgen merge \
--kernel=/usr/src/linux-4.19.57 --arch=x86 \
--minimal \
defconfig.net defconfig.crypto defconfig.laptop > some_host.defconfigkconfgen split
Split a .config file into a set of minimal definitions, based on their sections:
kconfgen split \
--kernel=/usr/src/linux-4.19.57 --arch=x86 \
--sections="net crypto fs" \
./fragments/ < ./.config
ls fragments/
defconfig.net
defconfig.crypto
defconfig.fs
defconfigIt is also possible to split by maximal section size:
kconfgen split \
--kernel=/usr/src/linux-4.19.57 --arch=x86 \
--max-symbols=20 \
./fragments/ < ./.config
ls fragments/
defconfig.net
defconfig.net_netfilter
defconfig.crypto
defconfig.drivers
defconfigkconfgen assemble
Assemble a defconfig file for a specific profile:
kconfgen assemble \
--kernel=/usr/src/linux-4.19.57 \
--profiles=profiles.toml \
some-profile > .configThe list of profiles and the defconfig files to use for them is listed in a toml file:
[ profile.example ]
arch = x86
include = [ "shared.core", "shared.server" ]
extras = [ "defconfig.example", "defconfig.wifi_intel" ]
[ shared.core ]
files = [ "defconfig.crypto", "defconfig.fs" ]
[ shared.server ]
files = [ "defconfig.net", "defconfig.net_netfilter" ]
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