I'm using Gazebo on OS X Yosemite, and I got these warnings while compiling my plugins. Is there anything I can do to fix these?

/usr/local/include/boost/interprocess/sync/posix/semaphore_wrapper.hpp:131:14: warning: 'sem_init' is deprecated [-Wdeprecated-declarations]
   int ret = sem_init(handle, 1, initialCount);
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.10.sdk/usr/include/sys/semaphore.h:55:5: note: 'sem_init' has been explicitly marked deprecated here
   int sem_init(sem_t *, int, unsigned int) __deprecated;