Is it possible to invoke cl.exe, the MSVC++ compiler, from inside a Visual Studio extension? I'm using VS2010 and not bothered about maintaining compatibility for 2008/2005. I've hunted through MSDN and had a poke through my DTE object, but not found anything of use. The documentation on what you can do with this stuff is kinda sparse.
You certainly can invoke cl.exe from the normal command line if you simply set up the appropriate environment variables.