Re: snort-1.8.x, libz, solaris and LD_LIBRARY_PATH

[Erek Adams <erek () theadamsfamily net>]

On Thu, 9 Aug 2001, Mike Diehn wrote:

> I'm trying to compile snort-1.8.1-beta6 or beta7 on a Solaris 2.7
> sparc.  The result is a binary that can't find libz.so.1 on it's
> own when I ask it to run.
>
> I configured with:
>
>    ./configure --with-libpcap-includes=../libpcap-0.4 \
>               --with-libpcap-libraries=../libpcap-0.4 \
>               --with-mysql=../mysql-3.23.40-sun-solaris2.7-sparc

I can speak from experience:  Snort does just fine on Sol7 Sparc. :)

> Configuration and make went fine, no errors.
>
> When I try to run the resulting snort binary, though:
>
>   [mdiehn@wombat snort-1.8.1-beta7]3 ./snort -h
>   ld.so.1: ./snort: fatal: libz.so: open failed: No such file or directory
>   Killed
>   [mdiehn@wombat snort-1.8.1-beta7]4
>
> If I set LD_LIBRARY_PATH=/usr/local/lib, it works.
>
> However, when I copy the binary to another system, ostensibly
> identical, that trick *doesn't* work.  I verified this other
> system has libz installed in the same place, too.  I can't be
> compiling directly on each system I'm going to install on, so
> this is a show stopper for me.
>
> I see in the comments in configure.in
>
>   # Look for libz.  This is needed for OpenBSD. Continue trucking
>   # if we can't find it anyway
>
> Seems to imply that we don't need it on Solaris.  That fits with
> my experience compiling snort-1.7 as snort-1.7 is running fine on
> another Solaris 2.7 that really doesn't have libz installed.

Well...  Solaris is has the BSD 'appendix' thing. :-)  It's there, and due to
that some things might think they need it.

> I did check config.status, the Makefiles and the output from
> configure.  They all indicate that libz was found during the
> configure process.  Why wouldn't it be found during the run?

If I'm guessing (which I am! :), I'd guess there are a few things that it
could be:

        1)  Script out of cron--Be sure LD_LIBRARY_PATH is set in the script.
        2)  You're in a chroot jail--Copy zlib into /pathtojail/usr/local/lib
        3)  Check symlinks--Many times something installs a lib_bleh.so.0 and
something requires a lib_bleh.so.1.
        4)  It hates you.  ;-)

Check that out and let us know!

-----
Erek Adams
Nifty-Type-Guy
TheAdamsFamily.Net


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