On recent CURRENT (FreeBSD 12.0-CURRENT #10 r304020: Fri Aug 12 22:39:57 CEST 2016) with most recent ports tree and ports so far up to date (r420159), the port graphics/blender fails to update from belnder 2.76b_1 to 2.77a or fails to be freshly installed with the error shown below:


[...]
[  1%] Building CXX object intern/ghost/CMakeFiles/bf_intern_ghost.dir/intern/GHOST_EventManager.cpp.o
In file included from /usr/ports/graphics/blender/work/blender-2.77a/intern/libmv/intern/autotrack.cc:27:
In file included from /usr/ports/graphics/blender/work/blender-2.77a/intern/libmv/intern/autotrack.h:30:
In file included from /usr/ports/graphics/blender/work/blender-2.77a/intern/libmv/intern/frame_accessor.h:32:
In file included from /usr/ports/graphics/blender/work/blender-2.77a/intern/libmv/intern/image.h:31:
In file included from /usr/ports/graphics/blender/work/blender-2.77a/intern/libmv/libmv/image/image.h:24:
/usr/include/c++/v1/cmath:309:9: error: no member named 'signbit' in the global namespace; did you mean '__signbit'?
using ::signbit;
      ~~^
/usr/include/include/math.h:192:5: note: '__signbit' declared here
int     __signbit(double) __pure2;
        ^
In file included from /usr/ports/graphics/blender/work/blender-2.77a/intern/libmv/intern/autotrack.cc:27:
In file included from /usr/ports/graphics/blender/work/blender-2.77a/intern/libmv/intern/autotrack.h:30:
In file included from /usr/ports/graphics/blender/work/blender-2.77a/intern/libmv/intern/frame_accessor.h:32:
In file included from /usr/ports/graphics/blender/work/blender-2.77a/intern/libmv/intern/image.h:31:
In file included from /usr/ports/graphics/blender/work/blender-2.77a/intern/libmv/libmv/image/image.h:24:
/usr/include/c++/v1/cmath:310:9: error: no member named 'fpclassify' in the global namespace
using ::fpclassify;
      ~~^
/usr/include/c++/v1/cmath:311:9: error: no member named 'isfinite' in the global namespace
using ::isfinite;
      ~~^
/usr/include/c++/v1/cmath:312:9: error: no member named 'isinf' in the global namespace
using ::isinf;

[...]

In file included from /usr/ports/graphics/blender/work/blender-2.77a/intern/libmv/libmv/image/tuple.h:24:
In file included from /usr/include/c++/v1/algorithm:624:
In file included from /usr/include/c++/v1/initializer_list:47:
/usr/include/c++/v1/cstddef:43:15: fatal error: 'stddef.h' file not found
#include_next <stddef.h>