Re: macOS/GCC support policy

[Eli Zaretskii]

> From: Philipp Stephani <address@hidden>
> Date: Fri, 2 Aug 2019 12:08:35 +0200
> Cc: Alan Third <address@hidden>, address@hidden, 
>       Emacs developers <address@hidden>
> 
> > What exactly prevents building with GCC on macOS?
> >
> 
> I haven't investigated in detail, but when I try to run configure with
> GCC 9 from Homebrew, I get the error message
> 
> checking AppKit/AppKit.h usability... no
> checking AppKit/AppKit.h presence... yes
> configure: WARNING: AppKit/AppKit.h: present but cannot be compiled
> configure: WARNING: AppKit/AppKit.h:     check for missing prerequisite 
> headers?
> configure: WARNING: AppKit/AppKit.h: see the Autoconf documentation
> configure: WARNING: AppKit/AppKit.h:     section "Present But Cannot
> Be Compiled"
> configure: WARNING: AppKit/AppKit.h: proceeding with the compiler's result
> configure: WARNING:     ## ------------------------------------ ##
> configure: WARNING:     ## Report this to address@hidden ##
> configure: WARNING:     ## ------------------------------------ ##
> checking for AppKit/AppKit.h... no
> configure: error: The include files (AppKit/AppKit.h etc) that
> are required for a Nextstep build are missing or cannot be compiled.
> Either fix this, or re-configure with the option '--without-ns'.

Thanks.  It would be good if someone could investigate what is the
problem here (and any other problems, if there are any).