[MacPorts] #41786: Coin @3.1.3 build failure on OS X 10.9 / Xcode 5.02

[MacPorts]

#41786: Coin @3.1.3 build failure on OS X 10.9 / Xcode 5.02
-----------------------------+--------------------------------
 Reporter:  thomas.gimpel@…  |      Owner:  macports-tickets@…
     Type:  defect           |     Status:  new
 Priority:  Normal           |  Milestone:
Component:  ports            |    Version:  2.2.1
 Keywords:                   |       Port:
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 Coin fails to build on Mavericks with Xcode 5.0.2. It seems that the math-
 undefs mechanism does not work, because Xcode uses the math functions to
 be avoided be Coin within some inline functions in
 ''/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/c++/v1/cmath''
 like this:
 {{{
 inline _LIBCPP_INLINE_VISIBILITY float       acos(float __x) _NOEXCEPT
 {return acosf(__x);}
 }}}

 Since ''math-undefs.h'' contains:
 {{{
 #define acosf(x) NO_SINGLEPREC
 }}}
 the compilation fails as soon ''cmath'' is included.

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Ticket URL: <https://trac.macports.org/ticket/41786>
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