[BUG] make headers_install install system headers instead the ones from kernel source

[BUG] make headers_install install system headers instead the ones from kernel source

[Stephan Raue]

Hi all,

"make headers_install INSTALL_HDR_PATH=<dest> ARCH=<arch>" should copy 
the headers from kernel source to <dest> (the toolchain) but it copys 
the headers from my system here.
i have tested this command now with kernel 2.6.39 to 3.3-rc4 its same on 
every tested kernel version.

i have compared the filesize, for example /usr/include/linux/types.h 
with <dest>/include/linux/types.h and <kernel_src>/include/linux/types.h 
and the destination file is the same as the one in /usr/include.

I think its a big problem, because many embe

Re: [BUG] make headers_install install system headers instead the ones from kernel source

[Sam Ravnborg]

On Sun, Feb 19, 2012 at 10:32:30PM +0100, Stephan Raue wrote:
> Hi all,
>
> "make headers_install INSTALL_HDR_PATH=<dest> ARCH=<arch>" should copy  
> the headers from kernel source to <dest> (the toolchain) but it copys  
> the headers from my system here.
> i have tested this command now with kernel 2.6.39 to 3.3-rc4 its same on  
> every tested kernel version.
>
> i have compared the filesize, for example /usr/include/linux/types.h  
> with <dest>/include/linux/types.h and <kernel_src>/include/linux/types.h  
> and the destination file is the same as the one in /usr/include.

Hi Stephan.

during the process of preparign the headers for use in user-space they undergo
a processing.

On my system:

types.h in the kernel is 5733 bytes
The exported variant is 1430 bytes.

I think that in your case the reason why they match in size is because
your distro uses a kernel exported types.h.

It should be simple to check. Just add a few lines to types.h in the kernel,
around a line you know will be present in the user-space version.
Export and see if the line is present.

	Sam

Re: [BUG] make headers_install install system headers instead the ones from kernel source

[Stephan Raue]

thanks is working :-) sorry for the noise.

Stephan

Am 19.02.2012 22:57, schrieb Sam Ravnborg:
>
> Hi Stephan.
>
> during the process of preparign the headers for use in user-space they undergo
> a processing.
>
> On my system:
>
> types.h in the kernel is 5733 bytes
> The exported variant is 1430 bytes.
>
> I think that in your case the reason why they match in size is because
> your distro uses a kernel exported types.h.
>
> It should be simple to check. Just add a few lines to types.h in the kernel,
> around a line you know will be present in the user-space version.
> Export and see if the line is present.
>
> 	Sam