Hi Hugh, I'm not sure about gfortran, but here is how I do it for C++: Mystery2Cpp blah.mystery | g++ -c -x c++ - -o blah.o -x c++ Tells g++ that the source code is C++. Since g++ will accept a variety of source code, and (otherwise) use the extension to select the proper compiler. - The dash is used to mean "use input from stdin". Since stdin is bereft of any sort of extension, the -x switch is necessary. -c Compile only, source to object. You probably know this one already. -o blah.o Output to the given file, blah.o. You probably know this one already, too. HTH, --Eljay
