[MacPorts] #35217: boost @1.50.0 Porfile does not pass configure.c{xx}flags to boost build

[MacPorts]

#35217: boost @1.50.0 Porfile does not pass configure.c{xx}flags to boost build
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 Reporter:  andrew.c.morrow@…          |       Owner:  macports-tickets@…                   
     Type:  defect                     |      Status:  new                                  
 Priority:  Normal                     |   Milestone:  MacPorts Future                      
Component:  ports                      |     Version:  2.1.1                                
 Keywords:                             |        Port:  boost                                
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 I've been experimenting with building various macports C++ libraries with
 XCode 4.5 DP2, with the compiler hardcoded to clang, and with '-std=c++11
 -stdlib=libc++' edited into configure.cxxflags in portconfigure.tcl:

 default configure.cxxflags  {"${configure.optflags} -std=c++11
 -stdlib=libc++"}

 I'll be the first to admit this is a somewhat exotic setup, but I've
 actually had surprisingly good success so far.

 One problem I have discovered is that my modified configure.cxxflags were
 not being passed along into the boost build system when building boost. In
 the Boost Portfile there is a line like this:

 write_jam "using darwin : : ${filter}${configure.cxx} ;"

 Which configures the user-config.jam file used by boosts build system.
 Based on the information here:

 http://www.boost.org/boost-
 build2/doc/html/bbv2/overview/configuration.html

 I think that this line should be modified to something more like:

 write_jam "using darwin : : ${filter}${configure.cxx} :
 <compileflags>\"${configure.cppflags}\" <cflags>\"${configure.cflags}\"
 <cxxflags>\"${configure.cxxflags}\" <linkflags>\"${configure.cxxflags}
 ${configure.ldflags}\" ;"

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Ticket URL: <https://trac.macports.org/ticket/35217>
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