[buildroot] Compilation failure on MIPS with 2.6.9.1 kernel headers

[buildroot] Compilation failure on MIPS with 2.6.9.1 kernel headers

[Thomas Petazzoni]

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Hello,

The compilation fails on MIPS with the new 2.6.9.1 kernel headers :

================================================================
In file included from ../../../include/bits/socket.h:305,
                  from ../../../include/netinet/in.h:212,
                  from ../../../include/netdb.h:28,
                  from __h_errno_location.c:3:
../../../include/asm/socket.h:86: error: conflicting types for 'SOCK_DGRAM'
../../../include/bits/socket.h:43: error: previous definition of 
'SOCK_DGRAM' was here
../../../include/asm/socket.h:87: error: conflicting types for 'SOCK_STREAM'
../../../include/bits/socket.h:46: error: previous definition of 
'SOCK_STREAM' was here
../../../include/asm/socket.h:88: error: conflicting types for 'SOCK_RAW'
../../../include/bits/socket.h:49: error: previous definition of 
'SOCK_RAW' was here
../../../include/asm/socket.h:89: error: conflicting types for 'SOCK_RDM'
../../../include/bits/socket.h:51: error: previous definition of 
'SOCK_RDM' was here
../../../include/asm/socket.h:90: error: conflicting types for 
'SOCK_SEQPACKET'
../../../include/bits/socket.h:53: error: previous definition of 
'SOCK_SEQPACKET' was here
../../../include/asm/socket.h:91: error: conflicting types for 'SOCK_PACKET'
../../../include/bits/socket.h:60: error: previous definition of 
'SOCK_PACKET' was here
================================================================

I think this issue has been discussed (and fixed) in the Linux MIPS CVS, 
see :
  http://www.linux-mips.org/archives/linux-mips/2004-10/msg00286.html
  http://www.linux-mips.org/archives/linux-cvs/2004-10/msg00120.html

As I understand it, #ifdef __KERNEL__ conditionnal is missing, leading 
to SOCK_* being visible to the userspace, and conflicting with libc 
definitions.

Thomas
-- 
PETAZZONI Thomas - thomas.petazzoni@enix.org
http://thomas.enix.org - Jabber: kos_tom@sourcecode.de
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Re: [buildroot] Compilation failure on MIPS with 2.6.9.1 kernel headers

[Ralf Baechle]

On Tue, Oct 26, 2004 at 11:22:15AM +0200, Thomas Petazzoni wrote:

> As I understand it, #ifdef __KERNEL__ conditionnal is missing, leading 
> to SOCK_* being visible to the userspace, and conflicting with libc 
> definitions.

In general the policy is to avoid the use of kernel headers in userspace
but glibc is one of those exceptions which we still tollerate ...

  Ralf