[MacPorts] #53126: opencv @3.1.0_8 +avx2 +contrib +eigen +gdal +opencl +java +python27 +python35 +qt5 +tbb fails to build

[MacPorts]

#53126: opencv @3.1.0_8 +avx2 +contrib +eigen +gdal +opencl +java +python27
+python35 +qt5 +tbb fails to build
--------------------+--------------------
 Reporter:  ksze    |      Owner:
     Type:  defect  |     Status:  new
 Priority:  Normal  |  Milestone:
Component:  ports   |    Version:  2.3.5
 Keywords:  build   |       Port:  opencv
--------------------+--------------------
 * macOS Sierra 10.12.2
 * Xcode 8.2.1
 * Command Line Tools (macOS Sierra version 10.12.2) for Xcode (version
 8.2)
 * MacPorts 2.3.5

 Just like that title says. `opencv @3.1.0_8` with those variants specified
 fails to build.

 Build log attached.

 Note that although the build log alludes to syntax errors in eigen3
 headers, building with just `+eigen` (and none of the other variants)
 actually works fine.

 In case it's relevant, I have `eigen3 @3.3.1_0+blas+clang39+gfortran`
 installed.

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Ticket URL: <https://trac.macports.org/ticket/53126>
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