[R-SIG-Mac] how does one dyn.load dylib shared libraries?

Richard Tabor tabor at c255.ucsf.edu
Thu May 11 05:28:19 CEST 2006

I am sorry if I was not completely clear.  The .a's and the .dylibs are 
part of the distribution with the IBM Compiler.  The R CMD SHLIB works 
just fine.

Compiling the .f to a .o works fine.
The R CMD SHLIB also works fine to generate the .so.
The dyn.load of the .so fails with a set of unresolved symbols that are 
part of one of the libraries from IBM.

So I think you answered my question.  I will try the gcc route.


On May 10, 2006, at 7:03 PM, Simon Urbanek wrote:

> On May 10, 2006, at 1:02 PM, Richard Tabor wrote:
>> I am running 2.1.0 and am using the IBMXL Fortran Compiler.  It has 
>> .a  and .dylib libraries which do not seem to load with dyn.load().
> How are you compiling them? I don't see how you can get either .a or 
> .dylib using R CMD SHLIB, so my guess is that it has nothing to do 
> with the compiler but with the way you compile the sources. On OS X 
> package libs are neither dynamic libraries (.dylib) nor static 
> libraries (.a) - they are bundles. The compilation shouldn't matter 
> and if in doubt you should be able to use gcc for the linking step in 
> case the IBM compiler is not compatible.
>> Is there a way to load these libraries or convert them to .so's?
> There is no converting, you should get the right .so directly 
> otherwise you're doing something wrong. Please tell us more precisely 
> what you're doing.
> Cheers,
> Simon

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