Hi Alan,
> -----Original Message-----
> From: Alan W. Irwin [mailto:ir...@beluga.phys.uvic.ca]
> Sent: Thursday, May 12, 2016 11:30 AM
> Thanks for clearing up that nomenclature. It appears then, that the ifort
> and NAG
> fortran compiler options I found concerned the wrong problem (undefined
> variable).
> What we need instead is a check of our Fortran binding and Fortran examples
> code
> for any variable without an explicit declaration, i.e., the easier problem.
> Presumably,
> if you put "implicit none" in all the right places, it should detect any such
> issues, but
> finding all those right places strikes me as an error-prone process so to
> double-
> check that I hope you are able to find and use a compiler option to check for
> variables that are not explicitly declared for either the ifort or NAG
> Fortran compilers.
> As far as I can tell, gfortran does not have such an option.
>
For Intel Fortran the option is /warn:declarations (on Windows) or
-warn:declaration (on Linux/OSX). Gfortran does have such an option:
-Wimplicit, but I guess -Wall will enable it as well. According to the
documentation the NAG compiler uses the option -u for this. (Key to these
morsels of wisdom: "implicit"). So this issue is indeed covered.
Regards,
Arjen
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