Hi mahmoodn, > Is it possible to reduce compilation time with GCC? Yes. Besides the approaches that Andrew pointed out, there is also having good source code hygiene, with low coupling and high cohesion, and having the #include statements only include that which is needed in the translation unit, and relying on header-header files. Details of which -- and a lot more good stuff -- is in this book: Large-Scale C++ Software Design by John Lakos http://www.amazon.com/dp/0201633620/ HTH, --Eljay
