Message-ID: <1304613791035-3498839.post@n4.nabble.com>
Date: 2011-05-05T16:43:11Z
From: Berend Hasselman
Subject: Compiling a FORTRAN program under Windows 7
In-Reply-To: <BANLkTikgf0zG4gO9ERhyxnYstR4ad-d7Zg@mail.gmail.com>
Mikael Anderson wrote:
>
> Hi,
>
> I am trying to compile a FORTRAN program to call from R under Windows 7
> but
> I am having problem in the compiling step. To demonstrate this is the
> program testit.f:
>
> ------------------------------------------
> subroutine TESTIT(x,n,m)
> dimension x(n)
> do 10 i=1,n
> 10 x(i)=x(i)**m
> end
> --------------------------------------------
>
>
In addition to the previous remarks, you would do yourself a favour by
utilizing the implicit-none option of gfortran. That will force you to
declare every variable (and its type) which will avoid many nasty bugs.
In your case: x is a REAL single precision but with R you will preferably
need double precision.
So I would advise you to use
gfortran -fimplicit-none ......
Berend
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