[MacPorts] #47119: mongodb @3.0.0: error: use of undeclared identifier 'strnlen'

[MacPorts]

#47119: mongodb @3.0.0: error: use of undeclared identifier 'strnlen'
--------------------------+--------------------------
 Reporter:  ryandesign@…  |      Owner:  ryandesign@…
     Type:  defect        |     Status:  new
 Priority:  Normal        |  Milestone:
Component:  ports         |    Version:  2.3.3
 Keywords:  snowleopard   |       Port:  mongodb
--------------------------+--------------------------
 mongodb 3.0.0 was not designed to build on Snow Leopard, unlike prior
 versions. I've already patched SConstruct to allow building on 10.6, and
 added compiler blacklists to ensure clang 3.4 or later is used, but the
 build fails with:

 {{{
 src/mongo/bson/bsonelement.h:485:35: error: use of undeclared identifier
 'strnlen'
                     size_t size = strnlen( fieldName(), maxLen - 1 );
                                   ^
 }}}

 `strnlen` was added to OS X in 10.7.

 Perhaps we can find a compatibility version of `strnlen`.

 mongodb used to include a version of `strnlen` but I believe it was
 nonstandard.

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Ticket URL: <https://trac.macports.org/ticket/47119>
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