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

From: Andrew Walrond
Date: Thu Jan 22 2009 - 14:04:54 EST


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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