Perl Guru Forums: Perl Programming Help: Intermediate: Dynaloader issues

Hi -

Overview:

I'm trying to use a CPAN module - Math::Geometry::Planar::GPC::Polygon - which basically
consists of a perl wrapper around a C library. I can run Make
without any problem, and it appears to install the shared-
object library in the correct directory (I'm using Linux).
However, DynaLoader isn't letting me link to it. I successfully
used this module a year and and a half ago, and I remember I
had to do something funky to get it to work - but I can't
remember for the life of me.

The dirty details:

I've got the following modules installed on my machine that I
know are needed with this:

Code

Inline-0.44_02 
ExtUtils::MakeMaker-6.44_01

After "tar xvf" the contents of the tar file, I run the following commands:

Code

perl Makefile.PL   // Generate the makefile 
make                     // make the shared object library

So far so good - no apparent error messages. If I run

Code

make test

at this point, I get:

Code

Had problems bootstrapping Inline module 'Math::Geometry::Planar::GPC::Polygon' 
 
Can't load 'blib/arch/auto/Math/Geometry/Planar/GPC/Polygon/Polygon.so' for module Math::Geometry::Planar::GPC::Polygon: blib/arch/auto/Math/Geometry/Planar/GPC/Polygon/Polygon.so: cannot open shared object file: No such file or directory at /home/y/lib/perl5/5.8/i686-linux-64int/DynaLoader.pm line 230. 
 at /home/y/lib/perl5/site_perl/5.8/Inline.pm line 512 
 
 at blib/lib/Math/Geometry/Planar/GPC/Polygon.pm line 32

If I try to permanently install this library:

Code

sudo make install

It seems to do the right thing; however

Code

./test.pl

gets a similar message:

Code

1..25 
Had problems bootstrapping Inline module 'Math::Geometry::Planar::GPC::Polygon' 
 
Can't load '/home/y/lib/perl5/site_perl/5.8/i686-linux-64int/auto/Math/Geometry/Planar/GPC/Polygon/Polygon.so' for module Math::Geometry::Planar::GPC::Polygon: /home/y/lib/perl5/site_perl/5.8/i686-linux-64int/auto/Math/Geometry/Planar/GPC/Polygon/Polygon.so: cannot open shared object file: No such file or directory at /home/y/lib/perl5/5.8/i686-linux-64int/DynaLoader.pm line 230. 
 at /home/y/lib/perl5/site_perl/5.8/Inline.pm line 512 
 
(etc. ...)

The shared object library *is* in the proper directory

Code

ls -l /home/y/lib/perl5/site_perl/5.8/i686-linux-64int/auto/Math/Geometry/Planar/GPC/Polygon/ 
 
 
Total 48 
-r--r--r--  1 root root     0 Feb 26 16:47 Polygon.bs 
-r-xr-xr-x  1 root root 45169 Mar 23 19:00 Polygon.so

I read that this is not a problem with DynaLoader, but that the *.xs file - the binding - is probably incorrect. But I can't find any *.xs files. I don't have much experience binding compiled code to perl, so I don't know what the implications are.

-Alan


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