问题
Is there any way to get gfortran to reject the f95 additions to Fortran 77? If not, is there another f77-only compiler available for unix systems?
I've tried using the -std=legacy flag but that only seems to remove depreciation warnings from f77 programs; the f95 enhancements still work fine.
回答1:
You can set fixed format with
gfortran -ffixed-form -ffixed-line-length-none [sourcefiles]
And this can actually make a difference (I have a program here where this changes the output!).
I’m pretty sure that there are options, which disable at least most of the f95 features.
来源：https://stackoverflow.com/questions/17004270/strict-fortran77-compiler-or-gfortran-compiler-flag