[Ksummit-discuss] [PATCH 2/2] kconfig: new command line kernel configuration tool
Linus Walleij
linus.walleij at linaro.org
Sun Jul 9 03:56:47 UTC 2017
On Fri, Jul 7, 2017 at 11:02 AM, Dan Carpenter <dan.carpenter at oracle.com> wrote:
> Krzysztof Kozlowski wrote:
>> However why not extending existing scripts/config? It
>> already has the feature for setting kconfig options (without looking
>> at dependencies - so like >> of yours).
>
> I didn't know about scripts/config when I wrote it. scripts/config is
> essentially a UI around "echo CONFIG_FOO=m >> .config". It's totally
> useless.
Maybe useless for you but i use it every day in my work. To compile a kernel
for a purpose I have a custom makefile.mak in my top kernel dir
that calls scripts/config to set stuff up on-the-fly with multiple rules like
this:
config-base: FORCE
@mkdir -p $(build_dir)
@cp $(rootfs) $(build_dir)/$(rootfsbase)
$(MAKE) $(make_options) u8500_defconfig
config-initramfs: have-rootfs config-base
# Configure in the initramfs
$(CURDIR)/scripts/config --file $(config_file) \
--enable BLK_DEV_INITRD \
--set-str INITRAMFS_SOURCE $(rootfsbase) \
--enable RD_GZIP \
--enable INITRAMFS_COMPRESSION_GZIP
(....)
config: config-common config-distro config-initramfs
$(CURDIR)/scripts/config --file $(config_file) \
--enable USE_OF \
--enable ARM_APPENDED_DTB \
--enable ARM_ATAG_DTB_COMPAT \
--enable PROC_DEVICETREE
yes "" | make $(make_options) oldconfig
For the full Makefile see:
https://dflund.se/~triad/krad/makefiles/ux500.mak
There are several of these, like some that create a minimal
i586 system with busybox on an initramfs:
https://dflund.se/~triad/krad/makefiles/i586.mak
I don't know if I am stupid in using this rather than config
fragments, but it works for me.
That said, what you have brewing looks better :)
Yours,
Linus Walleij
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