reference to 'shared_ptr' is ambiguous

[ryandesign]

Building povray 3.7.0.0 on OS X 10.9 has the following trouble:

In file included from backend/bounding/bbox.cpp:43:
In file included from ./backend/frame.h:58:
In file included from ./backend/control/messagefactory.h:39:
./backend/control/renderbackend.h:112:16: error: reference to 'shared_ptr' is ambiguous
  map<SceneId, shared_ptr<Scene> > scenes;
               ^
../vfe/unix/syspovconfig.h:85:14: note: candidate found by name lookup is 'shared_ptr'
using boost::shared_ptr;
             ^
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../lib/c++/v1/memory:3756:56: note: candidate found by name lookup is 'std::__1::shared_ptr'
class __attribute__ ((__type_visibility__("default"))) shared_ptr
                                                       ^

In MacPorts we are replacing all occurrences of shared_ptr with boost::shared_ptr to work around this.

[c-lipka]

Why on earth does your compiler do this, despite the boost type being explicitly pulled in by the "using" directive?

Maybe explicitly telling the compiler to not use C++11 might help.

[mistydemeo]

This is specifically happening using clang's libc++ standard library, which is the default under OS X 10.9. Not sure it can be made to not use C++11.

[c-lipka]

It might be worth trying boost::tr1 for the smart pointers; according to the docs it should simply pull in std::tr1 if available, but boost's implementation otherwise.

[c-lipka]

should be fixed in master now.