build script failed on macosx 10.12

[tingzhao]

[  2%] Building CXX object CMakeFiles/dvidcpp.dir/src/DVIDNodeService.cpp.o
In file included from /Users/zhaot/miniconda/envs/flyem-env/include/boost/config.hpp:44:0,
                 from /Users/zhaot/miniconda/envs/flyem-env/include/boost/smart_ptr/shared_ptr.hpp:17,
                 from /Users/zhaot/miniconda/envs/flyem-env/include/boost/shared_ptr.hpp:17,
                 from /Users/zhaot/Work/libdvid-cpp/libdvid/BinaryData.h:13,
                 from /Users/zhaot/Work/libdvid-cpp/libdvid/DVIDNodeService.h:16,
                 from /Users/zhaot/Work/libdvid-cpp/src/DVIDNodeService.cpp:1:
/Users/zhaot/miniconda/envs/flyem-env/include/boost/config/stdlib/libstdcpp3.hpp:77:22: fatal error: unistd.h: No such file or directory

[stuarteberg]

Just checking: Is this a new computer by any chance? If so, do you already have the xcode developer tools installed?
http://stackoverflow.com/questions/30877659/fatal-error-limits-h-no-such-file-or-directory