Re: [maemo-developers] building an application with custom kernel-headers

2006-10-19 Thread Yves-Alexis Perez 
On Thu, 2006-10-19 at 11:31 +0300, Eero Tamminen wrote:
> > [sbox-fitz: ~] > grep
> >
> IFA_F_HOMEADDRESS /usr/src/su-18-kernel-headers/include/linux/rtnetlink.h
> > #define IFA_F_HOMEADDRESS   0x10
> 
> Is this in the part of the kernel header that is not "exported"
> unless you're compiling kernel source code?  (or claiming
> so with a define used for this) 

I don't really know what you mean here, but this works outside of
scratchbox/maemo, and it works using not 'gcc' but 'gcc-3.4'

(gcc is a link to sb_gcc_wrapper in /scratchbox/compilers/bin/ while
gcc-3.4 is a pure arm compiler in /usr/bin):

 [sbox-fitz: ~] > file /scratchbox/compilers/bin/sb_gcc_wrapper
/scratchbox/compilers/bin/sb_gcc_wrapper: ELF 32-bit LSB executable,
Intel 80386, version 1 (SYSV), for GNU/Linux 2.2.0, dynamically linked
(uses shared libs), stripped

[sbox-fitz: ~] >  file /usr/bin/gcc-3.4
/usr/bin/gcc-3.4: ELF 32-bit LSB executable, ARM, version 1 (SYSV), for
GNU/Linux 2.4.17, dynamically linked (uses shared libs), stripped


So I build my package using CC=gcc-3.4

Thanks, anyway.
-- 
Yves-Alexis Perez

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Re: [maemo-developers] building an application with custom kernel-headers

2006-10-19 Thread Eero Tamminen 
Hi,

> [sbox-fitz: ~] > grep
> IFA_F_HOMEADDRESS /usr/src/su-18-kernel-headers/include/linux/rtnetlink.h
> #define IFA_F_HOMEADDRESS   0x10

Is this in the part of the kernel header that is not "exported"
unless you're compiling kernel source code?  (or claiming
so with a define used for this)


   - Eero
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Re: [maemo-developers] building an application with custom kernel-headers

2006-10-17 Thread Koen Kooi 
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Larry Battraw schreef:
>  I believe you need to use the capital 'I' option like so:
> 
> gcc -c -Wall -g -O2 -isystem -I/usr/src/su-18-kernel-headers/include
> conftest.c

No, -isystem is largely equivalent to -I.

regards,

Koen
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Re: [maemo-developers] building an application with custom kernel-headers

2006-10-17 Thread Larry Battraw 

 I believe you need to use the capital 'I' option like so:

gcc -c -Wall -g -O2 -isystem -I/usr/src/su-18-kernel-headers/include conftest.c

Larry

On 10/17/06, Yves-Alexis Perez <[EMAIL PROTECTED]> wrote:

Hi list,

I run into probleme trying to build an application which requires custom
kernel headers on scratchbox (0.9.8.5) using maemo rootstrap 2.0, cpu
transparency via qemu-arm.

I've built a patched kernel (which boots fine on the device), following
the Howto Kernel Compilation found on Maemo wiki. I've installed
su-18-kernel-headers too, and those headers are located
in /usr/src/su-18-kernel-headers/include in the scratchbox root.

I've checked that these headers have the correct files, with correct
definition.

The configure script tries to build a sample c file with a test on a
#define'd variable which exists in the custom headers files (and not in
the vanilla ones), and fails.

I tried with the sample c file by hand, using:

gcc -c -Wall -g -O2 -isystem /usr/src/su-18-kernel-headers/include
conftest.c

conftest.c contains:
8<
#include 

int
main ()
{
#ifndef IFA_F_HOMEADDRESS
  char *p = (char *) IFA_F_HOMEADDRESS;
#endif

  ;
  return 0;
}
8<

and:
[sbox-fitz: ~] > grep
IFA_F_HOMEADDRESS /usr/src/su-18-kernel-headers/include/linux/rtnetlink.h
#define IFA_F_HOMEADDRESS   0x10


I guess gcc doesn't use correct kernel headers due to cross compilation,
but have not clue how to fix this.

If anybody can help me on this, it would be really nice.

Thanks & regards,
--
Yves-Alexis Perez

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