[Patch] building nmap-4.03

[Peter O'Gorman <nmap-dev () mlists thewrittenword com>]

Hi,

We just build nmap-4.03, and had some issues, mostly with AIX and
libdnet. There are some serious problems with libdnet on AIX. Although a
separate download of libdnet itself actually builds, it is unusable. The
headers conflict with system headers. For example, aix has '#define
ip_v    ip_ff.ip_fv' in netinet/ip.h, which causes great compiler
confusion when it is included after dnet/ip.h which has "uint8_t
ip_v:4". We went through these and preixed them with dnet_.

In a few places, libdnet has '# define __attribute__(x)' which is okay,
but the compiler barfs if __attribute__ is already defined, so we
#ifndef __attribute__ around them.

Aix #defines ICMP_INFOTYPE, icmp_gwaddr, icmp_pptr, since nothing
appears to use these, we simply removed them from libdnet.

While aix does have a radix.h, and it appears mostly compatible with the
tru64 version, the #ifdef here is really checking for tru64, aix does
not have some of the structs and members being used:
"route-bsd.c", line 474.37: 1506-022 (S) "rnh_next" is not a member of
"struct radix_node_head".
"route-bsd.c", line 477.26: 1506-022 (S) "rnh_af" is not a member of
"struct radix_node_head".
"arp-ioctl.c", line 418.55: 1506-022 (S) "at_hwaddr" is not a member of
"struct arptab".
"arp-ioctl.c", line 439.16: 1506-007 (S) "struct ifnet_arp_cache_head"
is undefined.
I cheated here, and just added && ! defined (_AIX)

To get away from aix for a bit, hpux-10.20 does not have SIOCGIFMTU or
SIOCSIFMTU. It had other issues also, and I again cheated and did:
  ac_cv_header_hpsecurity_h=no
  ac_cv_header_sys_mib_h=no
before configure. While these headers exist, they differ significantly
from hpux11 and nmap does not build with them.

For slightly more normal issues, nmapfe/nmapfe_sig.c declares a variable
in the middle of a block, this is not accepted by all compilers. We also
had to cast the return value of a gobject_get_data to a function
pointer.

Thanks for nmap, patch attached.

Peter

Attachment: nmap.diff
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