[MacPorts] #51642: gcc49 @4.9.3: does not honor -march=native

[MacPorts]

#51642: gcc49 @4.9.3: does not honor -march=native
-------------------------+-------------------
  Reporter:  noloader@…  |      Owner:  mww@…
      Type:  defect      |     Status:  new
  Priority:  Normal      |  Milestone:
 Component:  ports       |    Version:  2.3.4
Resolution:              |   Keywords:
      Port:  gcc49       |
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Comment (by noloader@…):

 Replying to [comment:2 ryandesign@…]:
 > Setting `CXX=/opt/local/bin/x86_64-apple-darwin12-gcc-4.9.3` is unusual.
 Usually, you would set `CXX=/opt/local/bin/g++-mp-4.9`. Have you tried
 that already? Does it change anything?

 Yeah, Uri Blumenthal told me it was wrong. I couldn't gind a c++ compile,
 so I installed GCC and hoped it would do the right thing based on file
 extensions:

 $ port search 'g++'
 No match for g++ found
 $ port search '*g++*'
 No match for *g++* found
 $ port search 'g\+\+'
 No match for g\+\+ found
 $ port search '*g\+\+*'
 No match for *g\+\+* found

 > Any particular reason you're using gcc 4.9.3? The latest stable version
 is 6.1.0, available in the gcc6 port.

 Yes. I am setting up tests for MacPorts GCC compilers using a 4.x, 5.x and
 6.x. They will all be tested eventually.

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Ticket URL: <https://trac.macports.org/ticket/51642#comment:5>
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