Hello all,

I think this question is probably best asked with a simple example.

Say I have a "framework" project, that uses an "audio" project.

Now say I have an application that uses "framework" but doesn't want to inlcude "audio" support.

I need to:

1) detect an EXTERNALY defined define in my "framework" project and conditionaly allow the inclusion of "audio".

Pseudo code would look like:

framework jamfile:

#if !defined( EXTERNALY_DEFINED_NO_AUDIO )

use-project /audio : /libs/audio ;

#endif

audio jamfile:

as normal

application jamfile:

#define EXTERNALY_DEFINED_NO_AUDIO

Any ideas on how to do this much appreciated.

cheers,