If you're using Boost.Build, the GCC_INCLUDE_DIRECTORY variable can be defined either on your Jam command-line or in your environment to indicate the correct path. HTH, Dave "tlolczyk" <olczyk@interaccess.com> wrote in message news:a99bbe+ti51@eGroups.com...

My gcc include idrectories are in a nonstandard location. What do I modify in Jam to cause -I/myinclude to be added to the compile line.TIA