GNU bug report logs - #55846
make bootstrap -j2 fails on macOS

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From: help-debbugs <at> gnu.org (GNU bug Tracking System)
To: Mattias Engdegård <mattiase <at> acm.org>
Subject: bug#55846: closed (Re: bug#55846: make bootstrap -j2 fails on macOS)
Date: Fri, 10 Jun 2022 08:36:02 +0000

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Your bug report

#55846: make bootstrap -j2 fails on macOS

which was filed against the emacs package, has been closed.

The explanation is attached below, along with your original report.
If you require more details, please reply to 55846 <at> debbugs.gnu.org.

-- 
55846: https://debbugs.gnu.org/cgi/bugreport.cgi?bug=55846
GNU Bug Tracking System
Contact help-debbugs <at> gnu.org with problems

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From: Mattias Engdegård <mattiase <at> acm.org>
To: 55846-done <at> debbugs.gnu.org
Cc: Po Lu <luangruo <at> yahoo.com>, Lars Ingebrigtsen <larsi <at> gnus.org>,
 Alan Third <alan <at> idiocy.org>, Joakim Verona <joakim <at> verona.se>
Subject: Re: bug#55846: make bootstrap -j2 fails on macOS
Date: Fri, 10 Jun 2022 10:35:42 +0200

I'm applying the first patch since it solves my problem without any apparent adverse effects. If anyone has a better idea, feel free to modify.

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From: Mattias Engdegård <mattiase <at> acm.org>
To: bug-gnu-emacs <at> gnu.org
Subject: make bootstrap -j2 fails on macOS
Date: Wed, 8 Jun 2022 12:41:54 +0200

nextstep/Makefile.in has the rule

${ns_check_file} ${ns_appdir}: ${srcdir}/${ns_appsrc} ${ns_appsrc}
	rm -rf ${ns_appdir}
	${MKDIR_P} ${ns_appdir}
	( cd ${srcdir}/${ns_appsrc} ; tar cfh - . ) | \
	  ( cd ${ns_appdir} ; umask 022; tar xf - )
	[ "`cd ${srcdir} && /bin/pwd`" = "`/bin/pwd`" ] || \
	  ( cd ${ns_appsrc} ; tar cfh - . ) | \
	    ( cd ${ns_appdir} ; umask 022; tar xf - )
	touch ${ns_appdir}

but because of its dual targets, ns_check_file and ns_appdir, it is unsafe to use in parallel builds and seems in fact often to be invoked twice at the same time, which leads to general confusion and eventual build failure.

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