Re: port-powerpc/56892: powerpc ieeefp.h fails if _ISOC99_SOURCE is defined

[Taylor R Campbell <riastradh%NetBSD.org@localhost>]

The following reply was made to PR port-powerpc/56892; it has been noted by GNATS.

From: Taylor R Campbell <riastradh%NetBSD.org@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: Havard Eidnes <he%NetBSD.org@localhost>
Subject: Re: port-powerpc/56892: powerpc ieeefp.h fails if _ISOC99_SOURCE is defined
Date: Sun, 19 Jun 2022 19:15:58 +0000

 I gather that _ISOC99_SOURCE is supposed to mean `please expose only
 C99 declarations and nothing else' (not sure how widely supported this
 is or whether it's supposed to be different from -std=c99).  But
 ieeefp.h, fp_except, and fp_rnd are not part of C99.
 
 How does scipy come to include ieeefp.h?  If it's trying to use strict
 C99, it shouldn't touch ieeefp.h -- if anything, it should use fenv.h.