If your application runs on both UNIX and Windows, be sure to consider the following before you attempt to build:
A Rational Synergy session on UNIX probably cannot see your work areas on the PC, and a session on the PC cannot see your work areas on UNIX.
Most sites probably have existing parallel makefiles for building on UNIX and the PC; if so, you can continue using your makefiles on both platforms. If not, do the following:
When you automate your update/build process, you will need to automate the Windows and UNIX jobs separately with shell scripts or batch files, or use a cross-platform scripting solution, such as Perl or Cygwin.