I'd like to use the internal support for Ruby. My expectation is that the load time would be shorter? I'm running TCC 11,00,52 Windows 7 [Version 6,1,7601] TCC Build 52 Windows 7 Build 7601 Service Pack 1 It's 64-bit W7. if I try [C:\]echo %@ruby[p 3 +4] TCC: (Sys) Could not load Ruby dll (msvcrt-ruby18.dll) p 3 +4 it doesn't work. TCC12 x64 shows the same behaviour. According to the docs TC12 supports ruby 1.8 and 1.9. I've installed the version 1.9.2pl180 from rubyinstaller.org. The name of the DLL is msvcrt-ruby191.dll for the 1.9.2 version! Can I define the path/name of the dll to load? I couldn't find anything in the docs or online. Is there any way to get internal Ruby support in TCC? thank you for your help.