[MacPorts] #43917: ROOT6 : Update to first production release, 6.00.00

[MacPorts]

#43917: ROOT6 : Update to first production release, 6.00.00
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  Reporter:  jonesc@…  |      Owner:  mojca@…
      Type:  update    |     Status:  new
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:
Resolution:            |   Keywords:  haspatch maintainer
      Port:  root6     |
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Comment (by jonesc@…):

 > But there are a bunch of issues that I don't quite understand:
 >   * (something was probably awfully wrong on this old laptop – maybe low
 disk space, web browser using all resources, slow processor etc., but)
 ROOT spent 3 hours compiling `cling`: why doesn't it use that built-in
 clang/cling compiler? Why does it struggle with the system compiler then?
 Should we open a ticket for that?

 ROOT only uses the in-built clang library for its cling interpreter. For
 real compilation tasks, it still uses the library that was used to it
 itself.

 >   * Are you aware that currently ROOT would use, say, `macports-
 clang-3.4` (on anything else but 10.9) without declaring a runtime
 dependency on that compiler? You only declare a dependency if user asks
 for it via `+clang34`, but not when that compiler is automatically
 selected.

 Ah no, thus is a nuance I had to appreciated. Is there anyway to enforce
 this, i.e. so whatever compiler is picked, following the
 fallback/blacklist rules, is then declared as a *runtime* dependency, not
 just a build time one ?

 >   * Assuming that ROOT gets compiled with `clang-3.5`. Would it have to
 be recompiled when `clang-3.5` gets an update?

 Like any other dependency, that would depend on the update. But, for minor
 revisions within the same clang X.Y series, I would hope they would be ABI
 compatible, and thus no rebuild is needed.

 Chris

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Ticket URL: <https://trac.macports.org/ticket/43917#comment:69>
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