R-beta: dyn.load: incompatability between R and S

Jonathan Myles (jonathan.myles@mrc-bsu.cam.ac.uk)
Thu, 24 Jul 1997 17:56:08 +0100 (BST)


Date: Thu, 24 Jul 1997 17:56:08 +0100 (BST)
Message-Id: <199707241656.RAA21898@genin.mrc-bsu.cam.ac.uk>
From: Jonathan Myles <jonathan.myles@mrc-bsu.cam.ac.uk>
To: r-help@stat.math.ethz.ch
Subject: R-beta: dyn.load: incompatability between R and S



I have  C routines in a collection of files

"/homef/jonm/postdocs/GLMM_project/Cprogs/nn/misc.o"
"/homef/jonm/postdocs/GLMM_project/Cprogs/nn/random.o"
"/homef/jonm/postdocs/GLMM_project/Cprogs/nn/ars.o"

... etc , where the third file includes functions which call
functions in the second.

In S, the function

> gload
function()
{
	dyn.load("/homef/jonm/postdocs/GLMM_project/Cprogs/nn/misc.o")
	dyn.load("/homef/jonm/postdocs/GLMM_project/Cprogs/nn/random.o")
	dyn.load("/homef/jonm/postdocs/GLMM_project/Cprogs/nn/ars.o")
	

....

works fine.

However, in R although the first two statements execute OK, the third
produces 

> dyn.load("/homef/jonm/postdocs/GLMM_project/Cprogs/nn/ars.o")
Error in dyn.load(x) : ld.so.1: /scratch0/jonm/R-0.50-a1/bin/R.binary: fatal: re
location error: symbol not found: unitexp: referenced in /homef/jonm/postdocs/GL
 _project/Cprogs/nn/ars.o>

"unitexp" is a program in 


"/homef/jonm/postdocs/GLMM_project/Cprogs/nn/random.o"

so presumably the problem is that S "knows" about functions already loaded
by earlier dyn.load statements but R doesn't.

Is there any answer other than putting everything into one
huge file?

Thanks

Jonathan Myles



-- 
Dr. Jonathan Myles         e-mail:jonathan.myles@mrc-bsu.cam.ac.uk
MRC Biostatistics Unit     Tel. 01223 330371
Institute of Public Health FAX  01223 330388
University Forvie Site
Robinson Way
CAMBRIDGE
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