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Sender: Alexander Pronin <scherfreebsd@gmail.com>
From: Alexander Pronin <scher@FreeBSD.org>
Date: Tue, 26 Jun 2012 18:57:07 +0400
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Subject: [ Week Report GSOC ] Parallelization in the ports collection
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Redesign of options checking.
OPTIONS are configured recursively for port and it's dependencies on =
non-parallel stages, before each of the default targets (pkg, fetch, =
extract, patch, configure, build, install, package and check-sanity). =
While configuring OPTIONS ${PORT_DBDIR} is locked, thus only one =
configuration per time may be implemented.

tmp file is used to store already processed ports to skip them later.

Proper locking unlocking for ${PORT_DBDIR}, to allow only one process to =
make changes in this directory

PR: ports/169394: [ bsd.port.mk ] improper evaluation of =
config-recursive target.

Backward compatibility for non-parallel builds.
Non-parallel dependency builds are run as fg processes