Hello I want to use R as a library in a C/C++ ANSI ISO project I don't understand how can I generate R.lib with visual C++6 or C++.net; All libraires I've already used gave the two files: X.lib + X.dll then I 'am familiar to declare in the compiler: Project Properties->Linker->Input->Additional Dependencies:X.lib and put the X.dll closed to the executable program; how can I generate or get R.lib? what are the precise steps to follow? (I don't understand where I put what is written in the documentation "First build the import library R.lib by lib /def:R.exp /out:Rdll.lib" in a visual C++ compiler) thanks Pascal