Re: [PATCH] kernel.bbclass: Preserve generated headers

[Darren Hart <dvhart@linux.intel.com>]

On 07/31/2012 08:10 AM, Khem Raj wrote:
> asm/unistd.h includes asm/unistd_64.h on x86_64
> and asm/unistd_32.h on i386 but these files are
> generated files in 3.4 and when we do 'make clean' they get
> deleted and it shows up as an error when building
> external modules. May be its a 3.4 kernel bug may be not
> but make clean should have left the tree in
> a shape to build modules but it does not.
> 
> Probably we should run make modules_prepare after having
> run make clean.

There just doesn't seem to be a good way to do what we need to do here.
modules_prepare will build scripts, which we don't want, but clean kills
all the generated files.

This sounds like a good Linux kernel bug for us to to take a look at
fixing upstream:

make modules_prepare_cross

or something simlar, so we can get what we need with proper make targets
and avoid this constant cherry picking of files.

> 
> Signed-off-by: Khem Raj <raj.khem@gmail.com>
> ---
>  meta/classes/kernel.bbclass |    2 ++
>  1 files changed, 2 insertions(+), 0 deletions(-)
> 
> diff --git a/meta/classes/kernel.bbclass b/meta/classes/kernel.bbclass
> index b19ed4c..4ac3d48 100644
> --- a/meta/classes/kernel.bbclass
> +++ b/meta/classes/kernel.bbclass
> @@ -197,6 +197,8 @@ kernel_do_install() {
>  	if [ -f include/generated/bounds.h ]; then
>  		cp include/generated/bounds.h $kerneldir/include/generated/bounds.h
>  	fi
> +	mkdir -p $kerneldir/arch/${ARCH}/include/generated/
> +	cp -fR arch/${ARCH}/include/generated/* $kerneldir/arch/${ARCH}/include/generated/

Do you need all the generated files in arch/$ARCH/include/generated? Are
there any binaries in there?

>  
>  	# Remove the following binaries which cause strip or arch QA errors
>  	# during do_package for cross-compiled platforms
> 

-- 
Darren Hart
Intel Open Source Technology Center
Yocto Project - Technical Lead - Linux Kernel