linux-kernel - Re: 2.6.28 headers break kbd and net-tools userspace builds

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Date:	Thu, 22 Jan 2009 19:04:38 +0000
From:	Andrew Walrond <andrew@...rond.org>
To:	linux-kernel@...r.kernel.org
Subject: Re: 2.6.28 headers break kbd and net-tools userspace builds

Sam Ravnborg wrote:
>
> I checked the include guards and they are correct.
>
> Could you please investige where it picks up the first definition
> of struct iphdr.
>
>   
Here you go:

$ make iptunnel.o

cc -D_GNU_SOURCE -O2 -Wall -g  -I. -idirafter ./include/ -Ilib   -c -o
iptunnel.o iptunnel.c
In file included from /usr/include/linux/if_tunnel.h:5,
                 from iptunnel.c:39:
/usr/include/linux/ip.h:85: error: redefinition of 'struct iphdr'

$ grep -r iphdr /usr/include/

/usr/include/netinet/ip.h:struct iphdr
/usr/include/netinet/tcp.h: * This should be defined as MIN(512, IP_MSS
- sizeof (struct tcpiphdr)).
/usr/include/linux/if_tunnel.h:    struct iphdr        iph;
/usr/include/linux/ip.h:struct iphdr {

$ grep netinet/ip.h iptunnel.c

#include <netinet/ip.h>

So linux/ip.h is clashing with glibc(2.8)'s netinet/ip.h

Andrew Walrond

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