Re: Re: Getting configure to notice link-time vs run-time failures

On Fri, Jan 19, 2001 at 12:46:53AM +0100, Peter Eisentraut wrote:
> Tom Lane writes:
>
> > Gene and I looked into this, and the cause of the misbehavior is this:
> > gcc on this installation is set to search /usr/local/lib (along with the
> > usual system library directories). libz.so and libreadline.so are
> > indeed in /usr/local/lib, so configure's tests to see if they can be
> > linked against will succeed. But he had LD_LIBRARY_PATH set to a list
> > that did *not* include /usr/local/lib, so actually firing up the
> > executable would fail.
>
> You get what you pay for. If you're running executables from configure
> you're asking for it.
>
> This setup is a poor man's cross-compilation situation because the system
> you're compiling on is not identically configured to the system you're
> going to run on. (Strictly speaking, the behaviour of a test program
> might even vary with different LD_LIBRARY_PATH settings.)
>
> So
>
> a) PostgreSQL does not support cross-compilation (yet). Too bad.
>
> b) We could get rid of all executition time checks in configure (to
> remedy (a)). This is one of my plans for the future.
>
> c) You could move the execution time checks up before the suspicious
> library checks, but I'm afraid that this will only cure a particular
> symptom and might introduce other problems.
>
> I'd say, you're stuck.
>
> --
> Peter Eisentraut peter_e(at)gmx(dot)net http://yi.org/peter-e/
>

Wouldn't a -Wl,-R/usr/local/lib have helped?

Cheers,

Patrick