LÖVE

I'm getting this error:

physfs/File.cpp: In member function ‘virtual bool love_physfs::File::write(const char*, int)’:
physfs/File.cpp:112: error: ‘strlen’ was not declared in this scope
make[2]: *** [physfs/File.o] Error 1

This particular error has been seen more and it actually means that you have to add an include in the file EDIT: I should start reading titles