From: Rudi Cilibrasi <cilibrar@...>
Date: 2007-10-04T20:22:03+09:00
Subject: Re: problem with OpenMP in Ruby extension

Hi Ara,

Good to hear from you and I am glad to hear you are still thinking about dynamic
linking issues.  Unfortunately I tried your suggestion and so far I
cannot detect any measurable difference in behavior.  Same error
messages in both cases, with and without the #have_library(gomp...)
line.

Yes, it has taken years but I have rewritten complearn to use gobject
and OpenMP and I must say the results are exciting.  Recently,
somebody sent in a patch to improve the complearn tree search from
O(n^5) to O(n^3) and this really made my week last week, speeding up
tree search by thousands of times.  I am very excited to start
applying the new technology but this whole ruby extension thing openmp
problem has rained on my parade!  nice to hear from you again, -r.

On 10/3/07, ara.t.howard <ara.t.howard@gmail.com> wrote:
>
> On Oct 3, 2007, at 3:53 PM, Rudi Cilibrasi wrote:
> > I adjusted the extconf.rb to include this line:
> >
> > have_library('gomp', 'main')
> >
> > And rebuilding works but running a simple test program (just trying
> > to require
> > complearn) fails in a different way than before:
> >
>
> this sounds like it gets the link right (LD_LIBRARY_PATH) but fails
> at runtime.  try setting LD_RUN_PATH to the location of the gomp lib
> *before* compiling
>
> for example
>
>    export LD_RUN_PATH=/full/path/to/directory/with/gomp/lib
>    ruby extconf.rb && make && sudo make install
>
> just a hunch...
>
> cheers.
>
> ps. long time time no hear!
>
> a @ http://drawohara.com/
> --
> we can deny everything, except that we have the possibility of being
> better. simply reflect on that.
> h.h. the 14th dalai lama
>
>
>
>
>


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