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Re: avoiding AC_DEFINE in AC_RUN_IFELSE for Perl C code


From: Patrice Dumas
Subject: Re: avoiding AC_DEFINE in AC_RUN_IFELSE for Perl C code
Date: Sat, 11 Jan 2025 15:19:10 +0100

On Fri, Jan 10, 2025 at 04:35:19PM -0800, Paul Eggert wrote:
> On 2025-01-10 15:35, Patrice Dumas wrote:
> > > How about if you don't use either AC_LANG_PROGRAM or AC_LANG_SOURCE? Just
> > > use exactly the source code that you want.
> > confdefs.h is still used in that case.
> 
> OK, how about just writing your own code, instead of using AC_RUN_IFELSE?

Because it is better not to reinvent good code?

I reused the configure code generated by AC_LINK_IFELSE:
https://git.savannah.gnu.org/cgit/texinfo.git/commit/?id=6a3773cceec6c0858a176438c1bd6ac54a313e05

It should work well and be well integrated with the other checks, but it
uses internal $ac_ext and ac_fn_c_try_link, so we'll have to make sure
that it is still ok in the future, and probably reuse configure
generated code if it changes to much.

-- 
Pat



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