[MacPorts] #56097: audacity: not always respecting CXXFLAGS

[MacPorts]

#56097: audacity: not always respecting CXXFLAGS
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  Reporter:  mojca     |      Owner:  RJVB
      Type:  defect    |     Status:  new
  Priority:  Normal    |  Milestone:
 Component:  ports     |    Version:
Resolution:            |   Keywords:
      Port:  audacity  |
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Comment (by RJVB):

 I just tested: clang 4 and 5 seem to ignore the `-stdlib=foo` argument
 when invoked as the C driver. To the extent that the argument's rvalue is
 truly moot, even.

 In this case the overall argument is moot too as libvamp's Makefile
 doesn't see `configure.ldflags` at all but I think your assumption needs a
 bit more testing. It's a bit of a pity to have a convenience way to
 declare the required C++ runtime that still leaves a crucial part to the
 user/Portfile.

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Ticket URL: <https://trac.macports.org/ticket/56097#comment:7>
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