tlug: Can't see shared lib

["Stephen J. Turnbull" <turnbull@example.com>]

>>>>> "Darren" == Darren Cook <darren@example.com> writes:

    Darren> I'm compiling php3 as a module into Apache, following the
    Darren> instructions in the php manual. When building Apache it
    Darren> complains 'libpq.so.2.0' doesn't exist.

"Doesn't exist" means "as far as /lib/ld-linux.so knows."  You can (1) 
put the /usr/local/pgsql/lib into /etc/ld/so/conf and run ldconfig,
(2) set LD_LIBRARY_PATH=/usr/local/pgsql/lib in your environment, or
(3) do LD_PRELOAD=/usr/local/pgsql/lib/libpq.so.2.0.  Probably you
want to do (1) (as root, of course), but you should tighten up the
permissions on that directory first.

Why is this so mendoukusai?  Security: think about the tricks that
muriyari Netscape plays with the X libraries to see just how much you
can do.  Then suppose that someone arranged to link in a trojan DLL
that scarfed input strings ahead of /lib/libc.  Even a script kiddie
can grok that one.

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