Dear helpers: I am trying to call some Fortran 95 code with R-2.3.0 but had problem as below. Any pointers would be appreciated. Thanks, Zhu Wang On Linux, R CMD SHLIB rfh.f R> dyn.load("rfh.so")Error in dyn.load(x, as.logical(local), as.logical(now)) : unable to load shared library '/home/zwang/rf/rfh.so': /home/zwang/rf/rfh.so: undefined symbol: _gfortran_allocate On Unix, R CMD SHLIB rfh.f R> dyn.load("rfh.so")Error in dyn.load(x, as.logical(local), as.logical(now)) : unable to load shared library '/home/zwang/rf/rfh.so': ld.so.1: /usr/local/R-2.3.0/lib/R/bin/exec/R: fatal: relocation error: file /home/zwang/rf/rfh.so: symbol __f90_allocate2: referenced symbol not found