Re: Native compiler - passing command line options to C compiler

[Andrea Corallo via "Emacs development discussions." <emacs-devel@gnu.org>]

Arthur Miller <arthur.miller@live.com> writes:

> Andrea Corallo <akrl@sdf.org> writes:
>
>> Eli Zaretskii <eliz@gnu.org> writes:
>>
>>>> From: Andrea Corallo <akrl@sdf.org>
>>>> Cc: Arthur Miller <arthur.miller@live.com>, emacs-devel@gnu.org
>>>> Date: Mon, 30 Aug 2021 12:59:45 +0000
>>>> 
>>>> I think this "defined (WINDOWSNT)" should be there so that compiling on
>>>> Windows the check over "gcc_jit_context_add_command_line_option" it is
>>>> always compiled even in case the libgccjit.h provided at compile time
>>>> does not define
>>>> 'LIBGCCJIT_HAVE_gcc_jit_context_add_command_line_option'.
>>>> 
>>>> A newer version of the shared library including the entry point might be
>>>> provided later on and will be used at runtime.
>>>
>>> You cannot use a libgccjit.dll of a version for which Emacs was not
>>> compiled, unless it is binary-compatible.  If Emacs was linked against
>>> libgccjit.dll that didn't support
>>> gcc_jit_context_add_command_line_option, then it would not work to
>>> install a newer version of the DLL that does.
>>
>> Okay, I thought on Windows worked differently and we could handle the
>> case of a symbol not available at compile time but at runtime.  In the
>> light of this we can probably perform some more clean-up.
>
> So does that mean that windows check is not needed in add_driver_options as well?

AFAIR that was the reason for that check so yes.

  Andrea