Files
nethack/sys/unix
nhmall c8f4ad907f more MAN2TXT follow-up
Following a commit for Issue #1153, g-branden-robinson commented:
> Mac OS X stayed on _groff_ 1.19.2 for over a decade (presumably due to
> _groff_ 1.20 adopting to GNU GPLv3), until finally dropping _groff_
> altogether for macOS Ventura (2022).
>
> There _has_ been an interface change in that time.  The [`-P` option I
> advised about is new to _groff_ 1.23.0 (July 2023)]
> (https://git.savannah.gnu.org/cgit/groff.git/tree/NEWS?h=1.23.0#n86).
> [...]
>
> There is a significant number of _groff_ users via Homebrew (enough that
> we hear from them occasionally via bug reports).  Some of these have
> upgraded to 1.23.0 via that mechanism.
> [...]
>
> `nroff -` is not necessary with any _nroff_ known to me; like many other
> Bell Labs Unix programs, it reads from the standard input stream by default
> if not given any operands.

Action taken:

1. Remove the unnecessary ' -' from the nroff command in Makefile.doc.
2. In the misc.370 file containing make snippets to include, test whether
   groff >= 1.23, and only insert the -P option for 1.23 or greater.
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This README provides the instructions for building the unofficial Mac
binaries using the Apple provided developer IDE named XCode.

Establish a developer team in XCode
===================================

Your first step should be to establish a developer team within XCode.
Launch XCode and open the preferences dialog (XCode Menu->Preferences).
Select the "Accounts" tab.  Add an account (usually this should just be
your apple ID account you used to setup the Mac).  After adding the account,
select the account and then add a team (usually this will be just a
personal team for Mac Development).

Obtain your developer team identifier
=====================================

Your DEVELOPMENT_TEAM can be found by opening Keychain Access
(found by Finder->Applications->Utilities).  Click on "My Certificates".
Look for your "Mac Developer" certificate.  Right click on
the certificate to open a dialog that shows certificate details.
Look for "Organizational Unit" among the details.  This ten digit value
is your development team identifier.

Create XCodeLocal.xcconfig file
===============================

Now you need to create the XCodeLocal.xcconfig file that will be used by
XCode to get your development team identifier.  Create the file in
sys/unix and add a single line such as:
DEVELOPMENT_TEAM = XXXXXXXXXX

Where XXXXXXXXXX is replaced with your development team identifier.

Open the project and build
==========================

In XCode open the project file sys/unix/NetHack.xcodeproj, select
the product NetHack and build.  The build results are placed in
~/nethackdir.