[Rd] How to specify compiler options when using R CMD SHLIB
Dirk Eddelbuettel
edd at debian.org
Tue Dec 14 23:00:12 CET 2010
On 14 December 2010 at 13:25, Marian K Talbert wrote:
| Hi
|
| I've built a dll using Fortran code and can call it by either R or
| Fortran. Calling by the former gives me the wrong answer and the later
| gives the correct answer.
|
| >From what I've read, it looks like I should use the subroutines DBLEPR,
| INTPR and REALPR to print to the R console rather than using Fortran
| standard I/O and that if I use the command
| R CMD SHLIB source.f that these subroutines will automatically be found
| (Please correct me if I'm wrong about any of this). The problem is that I
| have to specify the gfortran compiler option -fno-range-check in order for
| my code to compile. I've tried setting PKG_FCFLAGS=-fno-range-check in a
| file named Makevars under the same directory as my Fortran files but this
| doesn't seem to be the right place because R CMD SHLIB still produces
| error messages related to integer overflow (the same error as when I run
| gfortran -c MRPP.f90 as opposed to gfortran -c MRPP.f90 -fno-range-check)
| when I type
|
| R CMD SHLIB MRPP.f90.
|
| So I was wondering if anyone could tell me how compiler option should be
| specified when using R CMD SHLIB?
I use
~/.R/Makevars
where you can set all variables your in in
$RHOME/etc/Makeconf
Setting the as environment variables will also work by virtue of make (and
that is what the inline package does).
Dirk
--
Dirk Eddelbuettel | edd at debian.org | http://dirk.eddelbuettel.com
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