Date: Tue, 31 Mar 2015 20:47:38 +0200 From: Roland Smith <rsmith@xs4all.nl> To: David Naylor <dbn@freebsd.org> Cc: freebsd-python@freebsd.org Subject: Re: USE_PYTHON=concurrent Message-ID: <20150331184738.GA95383@slackbox.erewhon.home> In-Reply-To: <3945228.UPHqZybedq@dragon.local> References: <3945228.UPHqZybedq@dragon.local>
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On Mon, Mar 30, 2015 at 09:14:40PM +0200, David Naylor wrote:
> Hi,
>
> I am investigating converting my ports to concurrent however I am not sure
> how concurrent is supposed to work:
>
> I looked in /usr/ports/Mk and only found a documentation reference to
> 'concurrent'. Setting USE_PYTHON=concurrent doesn't appear to actually
> change any behaviour.
>
> Please could you explain this for me?
From “/usr/ports/Mk/Uses/python.mk”:
concurrent - Indicates that the port can be installed for
different python versions at the same time. The port
is supposed to use a unique prefix for certain
directories using USES=uniquefiles:dirs (see the
uniquefiles.mk Uses for details about the
directories), if set to yes. Binaries receive an
additional suffix, based on ${PYTHON_VER}.
The values for the uniquefiles USES are set as
follows:
UNIQUE_PREFIX= ${PYTHON_PKGNAMEPREFIX}
UNIQUE_SUFFIX= -${PYTHON_VER}
If the port is installed for the current default
python version, scripts and binaries in
${PREFIX}/bin
${PREFIX}/sbin
${PREFIX}/libexec
are linked from the prefixed version to the
prefix-less original name, e.g.
bin/foo-2.7 --> bin/foo.
So it seems that any port that only installs modules in
“/usr/local/lib/pythonX.Y/site-packages/” could be labeled as concurrent as-is.
If your port wants to put things in DOCSDIR, EXAMPLESDIR, DATADIR, WWWDIR or
ETCDIR, you should add “USES=uniquefiles:dirs” to your port's Makefile.
Also read “/usr/ports/Mk/Uses/uniquefiles.mk”.
Roland
--
R.F.Smith http://rsmith.home.xs4all.nl/
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