CODEWITHSUNDEEP
linux-kernellinux-device-driverkbuild
user10008009
user10008009

Reputation:

Kconfig: How to prevent a specific CONFIG_* switch, when this leads to an issue?

Is there an opposite for depends on in Kconfig? Which at least prints a warning when a specific CONFIG_* switch is set, which isn't compatible after the full configuration is written (.config) after a make *_defconfig?

My current problem:
I'm working on a new driver for the ARMv7-M Systick timer. There exists an old version, but this version lacks in some functionality and isn't ported to the new U-Boot device model (DM). When a new vendor use both driver, then this leads in an linker error.

So I want prevent with Kconfig to use my driver, when the old driver is selected.

Or any other suggestion how to solve this?

(This is a generic question for projects which use Kbuild/Kconfig as build system.)

Upvotes: 0

Views: 839

Answers (1)

Marco Bonelli
Marco Bonelli

Reputation: 69346

The documentation states you can use depends on <expr>, so you can do:

depends on !OTHER_DRIVER

Upvotes: 1

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