Everything you need to know is in the Writing R Extensions manual, and
section 1.2.3 in particular. There are restrictions on Fortran 90/95 use
due to portability issues.
Make sure you are following all of the advice in the manual, e.g.:
- Files containing Fortran 90 code should have extension .f90
- Mixed Fortran 9x and C++ code is not supported and there is no
guarantee that Fortran 9x can be mixed with other languages.
- Free source form Fortran 9x is not portable.
- When using modules, you may need to give compile-order hints to
parallel make.
- Do not include module files in the source - they are
compiler-dependent.
Martyn
On Tue, 2015-03-17 at 11:26 +0100, Lukas Lehnert wrote:> I recently submitted a package to CRAN which encompasses Fortran 90 code.
> Neither on my linux system nor on the win-builder system the compilation
> reported any error or warning. The function worked fine. However, after
> submission of the package to CRAN, I received an email that I should not
> include Fortran 90 code.
>
> The problem is that the part written in Fortran is a large function using
> modules. Thus, rewriting the function in FORTRAN 77 is impossible. So, I
> searched on CRAN and found some packages which contain Fortran 90 code. Is
it
> generally possible to submit R packages to CRAN containing Fortran 90
source
> code? If so, what specific things should I consider?
>
> Thank you for your help
>
> Lukas Lehnert
>
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