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Re: Autoconf
From: Christopher Owen <chris.owen () consault com>
Date: Tue, 6 May 2008 02:21:53 -0700

Fyodor,

nmap is definitely not far behind then!  I got confused by the  
AC_PREREQ because the only way I know how to make configure.ac files  
involves making a template with autoscan first, and then modifying it  
to suit.

autoscan defines the AC_PREREQ in that case.

My apologies for my oversight!

I also just realized that there are multiple configure files, which  
explains why when I regenerated the configure script in the root  
directory that I continued to see the error.  Two of the rm messages  
go away.

When I try and run the latest autoreconf -f it fails with autoheader

   autoheader: warning: missing template: BSDI
   autoheader: Use AC_DEFINE([BSDI], [], [Description])
   autoheader: warning: missing template: BSD_NETWORKING
   autoheader: warning: missing template: DEC
   autoheader: warning: missing template: FREEBSD
   autoheader: warning: missing template: HAVE_IP_IP_SUM
   autoheader: warning: missing template: HAVE_OPENSSL
   autoheader: warning: missing template: HAVE_SOCKADDR_SA_LEN
   autoheader: warning: missing template: HAVE_STRUCT_ICMP
   autoheader: warning: missing template: HAVE_STRUCT_IP
   autoheader: warning: missing template: HPUX
   autoheader: warning: missing template: IRIX
   autoheader: warning: missing template: LINUX
   autoheader: warning: missing template: MACOSX
   autoheader: warning: missing template: NETBSD
   autoheader: warning: missing template: OPENBSD
   autoheader: warning: missing template: PCAP_TIMEOUT_IGNORED
   autoheader: warning: missing template: SOLARIS
   autoheader: warning: missing template: SPRINTF_RETURNS_STRING
   autoheader: warning: missing template: STUPID_SOLARIS_CHECKSUM_BUG
   autoheader: warning: missing template: SUNOS
   autoreconf: /usr/local/bin/autoheader failed with exit status: 1

If I try and run the following command, if has errors in a number of  
places:

   find . -name "configure.*" -execdir sudo /usr/local/bin/autoconf -f  
\;

The error:

   aclocal.m4:17: error: this file was generated for autoconf 2.61.
   You have another version of autoconf.  If you want to use that,
   you should regenerate the build system entirely.
   aclocal.m4:17: the top level
   autom4te: /usr/bin/m4 failed with exit status: 63

I'm afraid I'm reaching the limits of my understanding of the GNU  
Build Tools.

Is this of any use to nmap?  Should I keep looking into it?

  Christopher Owen
  e: chris.owen () consault com
  c: 778-997-9265
  p: 800-636-8508

  -----

  Exploit Lab Dojo at EusecWest 2008 in London, May 19,20th.
  www.eusecwest.com

On 6-May-08, at 1:10 AM, Fyodor wrote:

On Tue, May 06, 2008 at 12:58:44AM -0700, Christopher Owen wrote:
When compiling nmap on OSX Leopard, I noticed some errors in the ./
configure output.

   rm: conftest.dSYM: is a directory

Searching around this is definitely a bug in autoconf on Leopard that
is fixed in the latest 2.62 release.  nmap currently uses autoconf
2.13, which was released in '99.

Hi Chris!  Wow, that is great that 2.62 was released a few weeks ago.
The previous release was 2.61 from November 2006 :(.  But we aren't
using 2.13.  Our configure.ac has:

AC_PREREQ(2.13)

But that just means that we *insist* on at least version 2.13.  But we
actually use 2.61 for the distributed tarballs (with much newer
config.sub/config.guess files):

flog~/nmap>find . -name configure -exec egrep '^# Generated by GNU'  
'{}' \;
# Generated by GNU Autoconf 2.61.
# Generated by GNU Autoconf 2.61.
# Generated by GNU Autoconf 2.61.
# Generated by GNU Autoconf 2.61.
# Generated by GNU Autoconf 2.61 for PCRE 7.6.
# Generated by GNU Autoconf 2.61.
# Generated by GNU Autoconf 2.61.
flog~/nmap>

Cheers,
-F


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  • Autoconf Christopher Owen (May 06)
    • Re: Autoconf Fyodor (May 06)
      • Re: Autoconf Christopher Owen (May 06)
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