This source code is distributed by the LuaBinaries project: http://luabinaries.luaforge.net/ No changes are made to the Lua.org source code. But the makefiles are changed to include a "5.1" suffix in all library names and executables. Also "etc/bin2c" is re-added to the distribution. All binaries are generated using Tecmake. If you need to build the binaries yourself consider using Tecmake. It is easier to install and will make your life easier. http://www.tecgraf.puc-rio.br/tecmake IDE project files are also included. They were build using Premake and they are not used to build the standard distribution. They are intended for those who want to debug Lua code using the LuaBinaries configuration. The standard Lua.org makefiles are still available but they do not build the dynamic libraries. Best Regards, LuaBinaries Team