bug#48804: 27.2; compilation emacs on macOS

[Niels Søndergaard]

hello 

Now I god this error in the “configure —with-native-compilation” ,

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 bug-gnu-emacs@gnu.org ##

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’. 

And I didn’t specify “—with-ns” this time

mvh

Niels

 

Den 4. jun. 2021 kl. 14.32 skrev Eli Zaretskii <eliz@gnu.org>:

Date: Fri, 04 Jun 2021 13:26:38 +0100
CC: konrad.podczeck@univie.ac.at,nisoni@algon.dk,48804@debbugs.gnu.org
From: Alan Third <alan@idiocy.org>

I’ve gcc 10.2.0_4 installed by Homebrew on my new iMac 24” (with M1),

and can’t get a newer version, so I’ll

properly have to wait …..

What's wrong with GCC 10?  AFAIK, even GCC 7 comes with libgccjit that
is good enough for Emacs.

I believe that libgccjit only just added support for M1 processors in the last week or two, and for whatever reason the Intel emulation on the Macs doesn't work with the older libgccjit either.

Should we mention this in NEWS, where we announce native-compilation
support?  Knowing the prerequisites is important to avoid false
expectations and frustration.