[yocto] Kernel header missing for specific Target

[Bruce Ashfield]

On 15-07-17 09:55 AM, Gorny Krystian wrote:
> I'm using the fido branch. My iointerrupt.bb file looks as follow:
>
>
> DESCRIPTION = "Simple IO-interrupt driver"
> SECTION = "iointerrupt"
> LICENSE = "MIT"
> LIC_FILES_CHKSUM = "file://${COMMON_LICENSE_DIR}/MIT;md5=0835ade698e0bcf8506ecda2f7b4f302"
> PR = "r0"
>
> SRC_URI = "file://drv_iointerrupt.c"
> S = "${WORKDIR}"
> do_compile() {
>               ${CC} drv_iointerrupt.c -o iointerrupt
> }

And so I'm clear .. this is a standard .ko ? Or a userspace kernel driver ?

If you are looking for the internal kernel sources to be on the include
path, you need to reference STAGING_KERNEL_DIR (and something has to
depend on the kernel do_shared_workdir task to get the right bits
in place).

  recipes-kernel/lttng/lttng-modules_2.6.1.bb

Is an example of both.

Bruce

> do_install() {
>               install -d ${D}${bindir}
>               install -m 0755 iointerrupt ${D}${bindir}
> }
>
> Thanks,
> Krystian
>
> _____________________________________________________________________
>
> Krystian Gorny
> Research & Development
>
> Wipotec GmbH
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> 67657 Kaiserslautern
>
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> F +49.631.34146-8640
> http://www.wipotec.com
>
>
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> -----Original Message-----
> From: Bruce Ashfield [mailto:bruce.ashfield at windriver.com]
> Sent: Friday, July 17, 2015 3:32 PM
> To: Gorny Krystian; yocto at yoctoproject.org
> Subject: Re: [yocto] Kernel header missing for specific Target
>
> On 15-07-17 08:47 AM, Gorny Krystian wrote:
>> Hi
>>
>> I try add to my core-image-rt image on a x86 arch my own IO driver. I
>> have already my own recipe, for normal user space programs everything
>> is working fine.
>>
>> For the kernel space driver Yocto is missing at do_comile task the
>> asm/atomic.h header file. I have searched for the atomic.h file and
>> found a lot of them in the ./build/tmp/work folder. Yocto should use
>> one of them for the right hardware architecture right? Or is the a
>> something else I have forget to do?
>
> What Yocto branch are you using ?
>
> atomic.h is placed in the right location by the kernel build, assuming that your driver recipe has the proper dependencies.  Without seeing that recipe, it is hard to say more.
>
> Cheers,
>
> Bruce
>
>>
>> Many thanks
>>
>> Krystian
>>
>>
>> _____________________________________________________________________
>>
>> *Krystian Gorny*
>> Research & Development
>>
>> Wipotec GmbH
>> Adam-Hoffmann-Str. 26
>> 67657 Kaiserslautern
>>
>> T +49.631.34146-0
>> F +49.631.34146-8640
>> http://www.wipotec.com
>>
>>
>>
>> <http://www.wipotec.com>
>>
>> Legal information:
>> Wipotec Wiege- und Positioniersysteme GmbH HRB 2317 Kaiserslautern,
>> Management: T. Düppre, U. Wagner
>>
>> This e-mail may contain confidential and/or privileged information.
>> If you are not the intended recipient (or have received this e-mail in
>> error)
>> please notify the sender immediately and delete this e-mail. Any
>> unauthorized copying, disclosure or distribution of the material in
>> this e-mail is strictly forbidden.
>>
>>
>
>