I ran make and get the following error.

[ 17%] Building CXX object src/CMakeFiles/hphp_runtime_static.dir/cpp/base/string_data.cpp.o
In file included from /home/daniel/workspace/hiphop-php/src/cpp/base/zend/zend_string.h:22,
from /home/daniel/workspace/hiphop-php/src/cpp/base/string_data.cpp:22:
/home/daniel/workspace/hiphop-php/src/cpp/base/type_variant.h:95: error: ‘HPHP::Variant::Variant(ssize_t)’ cannot be overloaded
/home/daniel/workspace/hiphop-php/src/cpp/base/type_variant.h:92: error: with ‘HPHP::Variant::Variant(int)’
make[2]: *** [src/CMakeFiles/hphp_runtime_static.dir/cpp/base/string_data.cpp.o] Error 1
make[1]: *** [src/CMakeFiles/hphp_runtime_static.dir/all] Error 2