Hello Andy,

> On 31 Aug 2024, at 23:14, Andy Miller via Gcc <gcc@gcc.gnu.org> wrote:

> After apparently easily installing GCC 14.2 into macOS 12.7.4, 
> directly from https://gcc.gnu.org/gcc-14/ 

Please identify:

0. Which macOS architecture you are installing on (Arm64 is not supported by 
upstream yet, but there is a development branch)
1.  the version of XCode command line tools (or xcode app) you are using to 
build this.
2.  the configuration line you used.

> I find that it is unusable, because… 
> 
> The files in gcc14/…/14.2.0/include-fixed/ , which have been auto-edited by 
> script fixincludes, contain the undefined (& deprecated 
> <https://www.gnu.org/software/libtool/manual/html_node/C-header-files.html>) 
> symbols: 
> __BEGIN_DECLS and __END_DECLS !

We do not have any control over what the OS headers use - you can file a 
Feedback with Apple to make queries / observations to them 
(https://feedbackassistant.apple.com).

> Also also stdio.h fails to include the missing  _stdio.h which fails to 
> include the missing  secure/_common.h  ! 

The release was tested on macOS 12.6.7 x86_64 and with the development branch 
on both x86_64 and aarch64 (arm64) - so I expect we’ll be able to solve your 
issues.

thanks
Iain

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