Re: [Xenomai] Xeno3.x xeno-config --kcflags

[Philippe Gerum <rpm@xenomai.org>]

On 04/22/2015 08:14 AM, Hänel-Baas, Alexander wrote:
> Hi Jan
> 
> You are right, kbuild resolve it.
> 
> My mistake: I stored the kcflags in a variable and put this variable in the EXTRA_CFLAGS from the make file.
> XENOMAI_K_CFLAGS  = $(shell /usr/xenomai/bin/xeno-config --rtdm --kcflags)
> EXTRA_CFLAGS += $(XENOMAI_K_CFLAGS)
> The result was: EXTRA_CFLAGS= -Iarch/$(SRCARCH)/xenomai/include.
> 
> So I need a second expand step from $(SRCARCH).
> My solution is the eval function:
> $(eval EXTRA_CFLAGS += $(XENOMAI_K_CFLAGS))
> And now I get:  EXTRA_CFLAGS= -Iarch/arm/xenomai/include 
> and now module builds are success full.
> 
> Thank you very much for your post.
> 

Actually, this xeno-config --kcflags I came up with is overly and
uselessly complex. Since we patch the build system for merging the
Xenomai bits into the kernel image, we could just define a plain make
variable for holding those extra flags, which depend on the file layout
of the Xenomai release patched in only, so running a script to get them
is 100% overkill.

I'll come up with something simpler in the next days, so that Makefiles
can just refer to $(RTDM_CFLAGS) or something along these lines.

-- 
Philippe.