Hi,
 
Say, a directory dir1 has Jamroot.
dir1 has 2 sub-dirs:  dir2, dir3, each having a Jamfile.
 
By running bjam in dir1, how to invoke Jamfile in dir2 and dir3?
 
I tried 'build-project' dir1 dir2   in  Jamroot in dir1.
It gave a syntax error, saying only param could be passed to build-project.
 
Thanks,
Anant Rao