This guide was built using Eclipse 3.3 IDE for C/C++ Developers in Windows (but similar configuration can be applied for Linux).
To create a new project go to the menu "File / New / C or C++ Project":
You can use the MingW3 or Cygwin compiler. Just use the respective IUP binaries package: "mingw3" or "gcc3".
Then add your files to the projet folder if they are not already there.
After creating the project you must configure it to find the IUP includes and libraries.
Go the menu "Project / Properties", then to configure the include files location select "GCC C Compiler / Directories" in the left tree, then add the list of folders in "Include Paths".
Be aware that you will have to repeat the configuration for the C++ compiler.
To configure the library files location select "MinGW C++ Linker / Libraries" in the left tree, then add the list of folders in "Library Search Path" and add the add the list of folders in "Libraries".