[MacPorts] #47197: cmake-based ports: add cmake.out_of_source yes/no

[MacPorts]

#47197: cmake-based ports: add cmake.out_of_source yes/no
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  Reporter:  mojca@…                             |      Owner:  macports-
      Type:  enhancement                         |  tickets@…
  Priority:  Normal                              |     Status:  new
 Component:  ports                               |  Milestone:
Resolution:                                      |    Version:
      Port:  Cockatrice FreeRDP Io               |   Keywords:
  LucenePlusPlus OpenSceneGraph OpenSceneGraph-  |
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  chemkit chipmunk choqok chromaprint clucene    |
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  indi_maxdomeii json_spirit kealib libccd       |
  libdynd libftdi libhsplasma liblas libmsn      |
  libmusicbrainz3 libnifalcon libpcl libplist    |
  libtuxcap lmms lua-luabitop mariadb            |
  mariadb-10.0 mariadb-10.1 metis mysql55        |
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  orocos-kdl orocos-rtt osgswig-devel parmetis   |
  percona pgrouting physfs piklab playerstage-   |
  player playerstage-stage polkit-qt portmidi    |
  pqp py-dynd py-pyside py-pyside-tools py-      |
  shiboken qfsm qgis qhull qlandkartegt          |
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  qt4-module rabbitmq-c rsgislib rspamd          |
  scalapack scantailor scribus sdcv seqan-apps   |
  sfcgal shogun-devel sigil soci streamlog       |
  synergy synergy-devel sysdig tagainijisho      |
  taglib task telepathy-qt tigervnc tinyxml      |
  toluapp usbmuxd viennacl vigra vramsteg vrpn   |
  vtk vtk5 vxl wbxml2 weechat wesnoth widelands  |
  xrootd yajl yaml-cpp zorba                     |
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Comment (by mojca@…):

 (Not to be taken seriously.)

 Replying to [comment:11 larryv@…]:
 > Replying to [comment:10 rjvbertin@…]:
 > > There's one niggle with that scheme: ports that currently use
 > > out-of-source because they are obliged to. We lose trace of that if
 > > you remove all OOS setters when it becomes the default, breaking
 > > things if ever for whatever reason the default is switched back to
 > > non-OOS.
 >
 > Why this would ever happen? And in the event that it does happen,
 presumably we’d go through this testing process again.
 >
 > We don’t apply this logic anywhere else.

 When testing individual ports I sometimes get a feeling that it could be
 nice to distinguish between `yes`, `no` and `dontcare` to distinguish
 between ports that only work with out-of-source, ports where out-of-source
 fails and ports that work under both regimes.

 But of course that would be a waste of resources without any real benefit.

-- 
Ticket URL: <https://trac.macports.org/ticket/47197#comment:24>
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