[meta-freescale] Problems about selecting linux kernel drivers.

[Yusuf Altıparmak]

20 Kas 2019 Çar 18:00 tarihinde Andrey Zhizhikin <andrey.z at gmail.com> şunu
yazdı:

> On Wed, Nov 20, 2019 at 3:14 PM Yusuf Altıparmak
> <yusufalti1997 at gmail.com> wrote:
> >
> >
> >> Hello Yusuf,
> >>     You should be careful when generating kernel config file. Yocto
> project override kernel config(.config file) when compiling again.
> >>
> >
> > Hello Atakan,
> >
> > I solved that problem by changing the defconfig source string in
> <machine>.conf file. Each time I make changes, I also copy new .config file
> to another folder and rename it as in <machine>.conf file. My
> <machine>.conf(t1042d4rdb-64b.conf) file is like this;
> > KERNEL_DEFCONFIG ?= "${S}/arch/powerpc/configs/yusuf_defconfig"
> > KBUILD_DEFCONFIG ?= "yusuf_defconfig"
>
> This approach has 2 problems:
> 1. .config file is not the same as defconfig file. .config is
> auto-generated from whatever the defconfig you supply.
> 2. keeping the config file in the kernel tree implies you have to
> maintain your own kernel repository, or pollute it with unnecessary
> copy operation during kernel build
>
> To solve those problems you can do the following:
> 1. bitbake virtual/kernel -c savedefconfig would give you a defconfig
> file which is a real defconfig.
> 2. keep this defconfig next to the kernel recipe, and set
> KBUILD_DEFCONFIG to the one you generated at the step 1. above
>
> In this case you would not need to keep your kernel tree, have a
> "clean" defconfig file on hands which you can always update, and have
> a very nice tidy kernel recipe to build.
>
> Also, add to your kernel recipe following lines:
> FILESEXTRAPATHS_prepend := "${THISDIR}/${BPN}:"
> SRC_URI += "file://yusuf_defconfig"
>
> This would ensure that your yusuf_defconfig could be found and used
> for the build. ${BPN} is the kernel recipe name, so you would need to
> create a folder named as your kernel recipe next to the recipe itself
> and store the config file there.
>
> >
> > Best Regards
> >
> > --
> > _______________________________________________
> > meta-freescale mailing list
> > meta-freescale at yoctoproject.org
> > https://lists.yoctoproject.org/listinfo/meta-freescale
>
>
>
> --
> Regards,
> Andrey.
>

Thank you Andrey,

I will do this solution to avoid further compile time errors.

Best Regards.

>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.yoctoproject.org/pipermail/meta-freescale/attachments/20191120/517d1d59/attachment.html>