On Thu, Sep 16, 2010 at 15:59, gagan1 <gagan2172@xxxxxxxxx> wrote: > Tom Browder wrote: >> On Wed, Sep 15, 2010 at 16:12, gagan1 <gagan2172@xxxxxxxxx> wrote: >>> >>> chaps, >>> I am using gcc to compile a old peaice of code. that has >>> so >>> many header file with >>> #ifdef WIN_OS >>> slls >>> #elseif UNIX_OS >>> abs >>> #else >>> #error missing os >> >> Without knowing anything else, and assuming you're on some kind of >> unixish system, I suggest adding "-DUNIX_OS" to your compile flags. ... > Thanks Tom . It works -) Great! Now you can zero in on the other changes that may needed to bring the old code into the modern C/C++ era. Cheers, -Tom Thomas M. Browder, Jr. Niceville, Florida USA