We use Jam to build our product(s) from a single hierarchical source tree. We place the Binary output files into a separate hierarchy using LOCATE_TARGET.

Many of our 'components' have dependencies on each other so to minimise build times we use SubDir and SubInclude - for example :

Component A (an executable) uses Component B (a shared library) which in turn is built from some static libraries (C & D) and other sources.

Our Jamfiles have

A/Jamfile :

Subdir TOP A ;

If !$(s) { SubInclude TOP B ;

SubInclude TOP C ; SubInclude TOP D ; }

<Blah-blah>

LinkLibraries A$(SUFEXE) : B$(SUFLIB) ;

---

B/Jamfile :

Subdir TOP B ;

If !$(s) { SubInclude TOP C ; SubInclude TOP D ; }

<blah-blah>

LinkLibraries B$(SUFSHR) : C$(SUFLIB) D$(SUFLIB) ;

---

We use the !$(s) so that individual pieces can be built independantly.

A problem has arisen however since components A & B both have a source file xyz.c one in A/xyz.c the other in B/xyz.c

If only B is built things work fine, however if we build A and rely on dependancies to trigger the build of B building B$(SUFDLL) uses A/xyz.c NOT B/xyz.c.

I've tried working with SEARCH_SOURCE, LOCATE_* et al all to know avail. Things are perhaps made even more complicated by the fact that 90% of the time the builds are running on Windows (the other 10% is Unix - and I don't want to break those builds 8-)

Many thanks for any thoughts/comments