My purpose is use only MSVC to build GCC. It is not impossible, because GCC's sources are ANSI C compliant, but seems very hard due to many specific *nix - dependencies, such as unistd.h(Am I wrong?) and others. I worked with MSVC many years, so it will be very dufficult to change my course :) And it will be great surprise to all Win-developers who want explore complicated GCC's code - convinient VS.Net IDE, powerfull Boundchecker and exciting VisualAssist! :) I know about "religious wars" between GNU community and world of commercial software, but... Maybe someone can help? -- Best regards, Alexander mailto:a.shabanov@xxxxxxxxxxxxxxxxxxxxxx