[R] problems with dynamic objects on solaris

[Ott Toomet]

Dear R people,

I am working on a solaris 9 workstation with very restrictive access
policy.  It means I have still to use R 1.7.1 and gcc 2.95.

The problems is following: I have written a small function in c++ using
boost library and I want to dyn.load the resulting .so file into R.
Compilation works fine:

/akf/705769/zpu5769/proge/R$ R CMD SHLIB pcw.cc
g++ -I/opt2/R/lib/R/include  -I/usr/local/include   -fPIC  -g -O2 -c pcw.cc -o pcw.o
g++ -G -L/usr/local/lib -o pcw.so pcw.o   
/akf/705769/zpu5769/proge/R$ 

Note the resulting .so file is huge (it is only about 25kB on my
modern linux box):

/akf/705769/zpu5769/proge/R$ ll
total 6134
-rw-r-----+  1 zpu5769  705769      3151 nov 25 17:24 pcw.cc
-rw-r-----+  1 zpu5769  705769      3054 nov 18 15:12 pcw.cc~
-rw----rw-+  1 zpu5769  705769    810492 nov 25 18:00 pcw.o
-rwxrwx---+  1 zpu5769  705769   1637112 nov 25 18:00 pcw.so

However, I cannot load the object:

> dyn.load("/akf/705769/zpu5769/proge/R/pcw.so")
Error in dyn.load(x, as.logical(local), as.logical(now)) : 
	unable to load shared library "/akf/705769/zpu5769/proge/R/pcw.so":
  ld.so.1: /opt2/R/lib/R/bin/R.bin: fatal: relocation error: file /akf/705769/zpu5769/proge/R/pcw.so: symbol Rf_isReal__FP7SEXPREC: referenced symbol not found

Any ideas?  It works on my linux box (R 2.2.0, gcc 3.3.5).  Several
functions I have written before, in C (and without boost), are
working.

Thanks in advance,
Ott