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Date: Tue, 10 Mar 2015 22:39:59 +0100
From: Philippe Gerum <rpm@xenomai.org>
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Subject: Re: [Xenomai] Fwd: Error boilerplate/wrappers.h no found trying to
 compile RTDM module on 3.x-rc3 cobalt
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To: Helder Daniel <hdaniel@ualg.pt>, "Xenomai@xenomai.org" <xenomai@xenomai.org>

On 03/09/2015 07:57 PM, Helder Daniel wrote:
> Hi again,
> 
> I am sorry to ask help again about this point but I still am no able to
> compile a kernel module with Xenomai 3.x support.
> 
> I made the changes pointed in the previous email:
> In the module is now being included just:
> 
> <rtdm/driver.h>
> 
> and the makefile is now:
> 
> EXTRA_CFLAGS := $(shell xeno-config --kcflags)
> all:
> 
> make -C /lib/modules/$(shell uname -r)/build M=$(PWD) modules
> 

You need /lib/modules/$(shell uname -r)/build to refer to a kernel tree
prepared with the Xenomai kernel sources, i.e. scripts/prepare-kernel.sh
should have run in this source tree at some point. The errors you get
indicate that no Xenomai code can be found there.

A basic Makefile for foo_module.ko composed of a single source foo.c,
and pulling the extra CFLAGS from xeno-config, could look like:

$(eval ccflags-y = $(shell xeno-config --kcflags))
obj-y += foo_module.o
foo_module-y := foo.o

-- 
Philippe.