fail to build, boost error

[MerlotQ]

In file included from /usr/include/boost/thread/thread_only.hpp:17:0,
from /usr/include/boost/thread/thread.hpp:12,
from /usr/include/boost/thread.hpp:13,
from /home/ht/src/GSLAM-ORBSLAM/src/Map.h:26,
from /home/ht/src/GSLAM-ORBSLAM/src/ORBSLAM.h:4,
from /home/ht/src/GSLAM-ORBSLAM/src/ORBSLAM.cpp:1:
/usr/include/boost/thread/pthread/thread_data.hpp: In member function ‘void boost::thread_attributes::set_stack_size(std::size_t)’:
/usr/include/boost/thread/pthread/thread_data.hpp:52:47: error: ‘getpagesize’ was not declared in this scope
std::size_t page_size = getpagesize();
^
/usr/include/boost/thread/pthread/thread_data.hpp:52:47: note: suggested alternative:
In file included from /usr/local/include/GSLAM/core/Glog.h:184:0,
from /usr/local/include/GSLAM/core/Mutex.h:26,
from /usr/local/include/GSLAM/core/GSLAM.h:21,
from /home/ht/src/GSLAM-ORBSLAM/src/ORBSLAM.h:3,
from /home/ht/src/GSLAM-ORBSLAM/src/ORBSLAM.cpp:1:
/usr/include/unistd.h:978:12: note: ‘GSLAM::getpagesize’
extern int getpagesize (void) __THROW attribute ((const));
^