[Buildroot] Ensuring kernel symbols for a module

[Buildroot] Ensuring kernel symbols for a module

[Angelo Compagnucci]

Hello Devs!

I'm looking for a way to ensure kernel symbols are present for the
sysdig kernel module (CONFIG_TRACEPOINTS
CONFIG_HAVE_SYSCALL_TRACEPOINTS). Is there a simple way to express
such a dependency?

Thanks!

-- 
Profile: http://it.linkedin.com/in/compagnucciangelo

[Buildroot] Ensuring kernel symbols for a module

[Thomas Petazzoni]

Hello,

On Mon, 14 Aug 2017 09:28:36 +0200, Angelo Compagnucci wrote:

> I'm looking for a way to ensure kernel symbols are present for the
> sysdig kernel module (CONFIG_TRACEPOINTS
> CONFIG_HAVE_SYSCALL_TRACEPOINTS). Is there a simple way to express
> such a dependency?

You can add more logic in linux/linux.mk. See:

        $(if $(BR2_PACKAGE_KTAP),
                $(call KCONFIG_ENABLE_OPT,CONFIG_DEBUG_FS,$(@D)/.config)
                $(call KCONFIG_ENABLE_OPT,CONFIG_ENABLE_DEFAULT_TRACERS,$(@D)/.config)
                $(call KCONFIG_ENABLE_OPT,CONFIG_PERF_EVENTS,$(@D)/.config)
                $(call KCONFIG_ENABLE_OPT,CONFIG_FUNCTION_TRACER,$(@D)/.config))

for example.

Best regards,

Thomas
-- 
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com