Hi Abe, You're right, I think, about the shell environment. I am no expert (and anyone please correct me if make an incorrect statement), but it seems that MSYS provides a Linux/Unix-like environment and command shell. It also includes minGW, a GCC-like compiler with support for the Windows API, which you can run from the MSYS shell. I am running Windows XP. It was pretty simple and I am relatively new to Linux. Simply download the RAR extract where ever you like and run msys.bat. Once you are in the command shell use the normal commands like "configure", "make", etc. that you would use in a Linux environment. As a side note, I did manage to get Dev-C++ to work after I was successful compiling in MSYS. I don't think the Dev-C++ success is related to having MSYS installed. Dev-C++ includes its own minGW as the backend compiler but is a Windows-like IDE. I believe the problem was that when compiling, it would create a new file called makefile.win. For whatever reason, it would not compile using this makefile. So you must go to "Project Options" and the "Makefile" tab, check "Use custom makefile" and select the correct file which should simply be called "makefile". After doing that, Dev-C++ would correctly compile udpcast without errors. Hope this helps, Michael -----Original Message----- From: Abraham Y. Chen [mailto:AYChen@Avinta.com] Sent: Tuesday, April 20, 2010 9:05 PM To: Holdridge, Michael B Cc: udpcast(a)udpcast.linux.lu Subject: Re: [Udpcast] Source for Windows 201004201849.AYC Hi, Michael: I, too, have been hoping to develop a generic networking monitoring utility for both Linux and Windows machines by utilizing a part of the UDPcast capabilities. Being able to generate both executable codes by compiling from the same source code is a definite encouragement to my plan. Reviewing the MSYS that you have used, it seems to me that it needs to be under some kind of software shell environment to work? Did you start with a PC with Windows as the OS? Could you please outline your setup, so that I can duplicate your success? Thanks very much in advance. Abe (2010-04-20, 19:04) Website: www.Avinta.com Holdridge, Michael B wrote: