[cfe-dev] RFC: Fortran optoins in Clang
Andrzej Warzynski via cfe-dev
cfe-dev at lists.llvm.org
Thu Apr 8 07:59:25 PDT 2021
What should Clang do when using options that are reserved for Flang
(i.e. that only make sense for Fortran input)? Should this be a warning
or an error?
Currently Clang will issue an error. This is problematic to some users
and was brought up in a post-commit review for
https://reviews.llvm.org/D95460. GCC is more forgiving in such scenarios:
gcc -c -ffree-form file.c
cc1: warning: command line option ‘-ffree-form’ is valid for Fortran but
not for C
I propose that we introduce similar logic in Clang. A patch implementing
this is available here: https://reviews.llvm.org/D99353.
This is a user-facing change and I want to make sure that this works for
everyone. Your feedback is much appreciated!
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