[Bug preprocessor/89808] An option to disable warning "#pragma once in main file"

[s_gcc_bugzilla at binarez dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=89808

--- Comment #4 from sduguay <s_gcc_bugzilla at binarez dot com> ---
(In reply to Jakub Jelinek from comment #2)
> You haven't explained why do you need to use #pragma once in the main cpp
> source file, are you sometimes including it as a header and other times
> compiling it as the TU itself?  Not to mention that it is best not to use
> #pragma once at all anywhere.

Yes, in the system I'm working on, there is no "main file", all C++ (xcpp files
actually) are small C++ programs that I link with a generated main file. xcpp
programs can use other programs (xcpp files) or libs (xhpp files).

This is all working pretty well right now, except for that #pragma once
warning. It's still under pretty heavy development.

You can try it @ https://github.com/binarez/xcpp


Thanks