autoconf and net/if_arp.h on Solaris 9 x86

[Erik Karu]

Hi,

with autoconf-2.57 on Solaris 9 x86 (12/03) I get this
error:

checking net/if_arp.h usability... no
checking net/if_arp.h presence... yes
configure: WARNING: net/if_arp.h: present but cannot
be compiled
configure: WARNING: net/if_arp.h: check for missing
prerequisite headers?
configure: WARNING: net/if_arp.h: proceeding with the
preprocessor's result
configure: WARNING:     ##
------------------------------------ ##
configure: WARNING:     ## Report this to
address@hidden ##
configure: WARNING:     ##
------------------------------------ ##
checking for net/if_arp.h... yes


when I have this line in my configure.in:


AC_CHECK_HEADERS(net/if_arp.h)


>From Solaris 9 arp(7p) man page:

NAME
     arp, ARP - Address Resolution Protocol

SYNOPSIS
     #include <sys/fcntl.h>
     #include <sys/socket.h>
     #include <net/if_arp.h>

So you need to include those two headers (at least on
Solaris 9) when checking for net/if_arp.h. I verified
this by manually adding those two includes to the
generated configure script and it worked like a charm.

Thanks.



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