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From: "xry111 at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>
To: gcc-bugs@gcc.gnu.org
Subject: [Bug other/109522] Spurious "cc1: error: no include path in which to
 search for stdc-predef.h" building a cross compiler
Date: Sat, 15 Apr 2023 11:45:15 +0000
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=3D109522

--- Comment #2 from Xi Ruoyao <xry111 at gcc dot gnu.org> ---
(In reply to Jakub Jelinek from comment #1)
> I bet we really don't need the macros from stdc-predef.h, so perhaps we
> could use -nostdinc.
> stdc-predef.h currently (sometimes) predefines
> __STDC_IEC_559__
> __STDC_IEC_60559_BFP__
> __STDC_IEC_559_COMPLEX__
> __STDC_IEC_60559_COMPLEX__
> __STDC_ISO_10646__
> and grep doesn't find any STDC_IEC nor STDC_ISO occurrences in fixincl.

Yes, these macros are some sort of "modern" (stdc-predef.h was firstly adde=
d to
Glibc in 2012), and it's unlikely anyone has ever used them in a broken way
(without "__").=