.f03 files

[Brooks Moses]

Tobias Burnus wrote:
> Christopher D. Rickett wrote:
>> how difficult would it be to get gfortran to accept files with .f03/.F03 
>> extensions?
>>   
> Is there really a need for supporting this extension?
> 
> Actually, .f = fixed form (Fortran 77, 90, 95, 2003, 2008) and .f90 =
> free form (Fortran 90, 95, 2003, 2008) should be enough. I don't think
> any compiler which supports .f95, .f03 / .f2003 treats those files any
> different than .f90 (or even .f with the -ffree-form option).

Even if a compiler doesn't treat them differently, it seems quite 
reasonable to posit a makefile suffix rule that chooses compiler options 
such as -std=f95 or -std=f2003 based on the use of a .f95 or .f03 file 
suffix.  Or even a human-based system that distinguishes them on that 
basis -- if I'm compiling file.f03, I'll know I should use an F2003 
compatible compiler and shouldn't use -std=f95, whereas I wouldn't 
necessarily expect that for a file.f90.

- Brooks