[Boost-build] always exec a make rule

Subject: [Boost-build] always exec a make rule
From: Oliver Kowalke (oliver.kowalke_at_[hidden])
Date: 2011-02-01 13:46:56

a Jamfile cotnains a make rule

...
make xyz.hpp
        : xyz_header
        : @copy-xyz_header

how can I achieve that the make rule will always executed before

test-suite "xyz" :
     [ run test_xyz.cpp ]
     ;

?
I didn't found a solution in the build docu (I assume that 'xyz.hpp' 
must be made as dependecy for test-suite 'xyz').

regards,
Oliver