[MacPorts] #47754: vigra @1.10.0_6 build fails with -Os (was: Vigra @1.10.0_6 build fails)

[MacPorts]

#47754: vigra @1.10.0_6 build fails with -Os
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  Reporter:  macports@…  |      Owner:  benjamin.seppke@…
      Type:  defect      |     Status:  closed
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.3.3
Resolution:  fixed       |   Keywords:
      Port:  vigra       |
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Changes (by ryandesign@…):

 * cc: ryandesign@… (added)


Comment:

 Replying to [comment:8 benjamin.seppke@…]:
 > In the -Os optimization level some symbols of the std c++ lib are
 somehow lost.
 > But if you replace the -Os with e.g. -O3 optimization, it compiles just
 as expected.

 I haven't heard of anything like that before, but if that's true, then
 that's bizarre. Have you reported that problem to anyone else—the llvm
 project, for example, or Apple? `-Os` is the optimization level Apple uses
 to compile the software you get as part of OS X, so it's the optimization
 level that should be best-tested by Apple, who are also developers of llvm
 and clang and libc++, which is why MacPorts switched its default
 optimization level to `-Os` to match. If there is a problem with
 llvm/clang/libc++ and `-Os` I would very much like to know it, as probably
 would Apple.

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Ticket URL: <https://trac.macports.org/ticket/47754#comment:10>
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