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Re: ranlib error when building nsock examples locally
From: Jay Fink <jay.fink () gmail com>
Date: Tue, 30 Jun 2009 17:40:39 -0400

I was using an svn checkout;
So here are the steps:

cd nmap
make clean
svn up
./configure
make
sudo make install
cd nmap/libpcap (made sure this had built as the examples need it)
./configure
make
I didn't install at this point because I only needed the libs from
that directory
cd ../nsock/examples
(note that nsock_pcap.c is a file I created, but it compiled fine earlier)
make nsock_pcap

that is when I hit the error. I can try it again from clean sources
tomorrow. I see what you mean, something may have just been off about
the build itself. No crashes... well not yet right :)

thanks.
  j

On Tue, Jun 30, 2009 at 4:29 PM, Daniel Roethlisberger<daniel () roe ch> wrote:
Jay Fink <jay.fink () gmail com> 2009-06-30:
All,

I ran into this after building an nmap/libpcap on FreeBSD-8.0-current
when trying to compile a test program using nsock in
~/nmap/nsock/examples:

[jrf () pradu ~/nmap/nsock/examples]$ make nsock_pcap
gcc -o nsock_pcap -I/usr/local/include -Wall -g   -I../include
-I../../nbase nsock_pcap.o ../src/libnsock.a ../../nbase/libnbase.a
-lssl -lpcap -lcrypto ../../libpcap/libpcap.a
../../libpcap/libpcap.a: could not read symbols: Archive has no index;
run ranlib to add one
*** Error code 1

Stop in /usr/home/jrf/nmap/nsock/examples.

I went into nmap/libpcap and ran 'ranlib libpcap.a' and it compiles fine now.

I am running a FreeBSD 8 snapshot:
FreeBSD pradu 8.0-CURRENT-200906 FreeBSD 8.0-CURRENT-200906 #0: Sun
Jun  7 10:31:30 UTC 2009
root () mason cse buffalo edu:/usr/obj/usr/src/sys/GENERIC  amd64

I just tried to reproduce this on my -current test box built from
fresh sources csup'ed a few hours ago.  Running configure and
make in nmap/libpcap yields a perfectly fine libpcap.a (ranlib is
run correctly on libpcap.a as the last step in building libpcap).

I succeeded in manually linking nsock_telnet against pcap at
../../libpcap/libpcap.a and I verified that libpcap was
statically linked using ldd.

$ uname -a
FreeBSD cassandra.ustcor.roe.ch 8.0-CURRENT FreeBSD 8.0-CURRENT
#2: Tue Jun 30 00:46:44 CEST 2009
root () cassandra ustcor roe ch:/usr/obj/usr/src/sys/GENERIC  amd64

What were the exact commands you used to configure and build
Nmap's libpcap, starting from a fresh checkout or release
tarball?

(Your box didn't by any chance crash at some point, leaving a
corrupted/empty libpcap.a behind?  I think there was a chdir()
related LOR in -current at around the time the June snapshot must
have been taken, not sure though.)

--
Daniel Roethlisberger
http://daniel.roe.ch/

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