[ECOS] CDL help wanted

[Andrew Lunn <andrew dot lunn at ascom dot ch>]

Hi Folks

Please could someone help me with some CDL. 

I have a big package which has lots of options which enable/disable
compiling various functions. Associated with each compilable option
there is a test program. My problem is how to get the test programs
compiled.

ecosconfig will only take the value of the variable CYGPKG_MYPKG_TESTS
as a list of tests. If you have subpackages with tests and define
CYGPKG_MYPKG_OPTION1_TESTS it gets ignored. So i need some way to
combine all the tests into the one top level CYGPKG_MYPKG_TESTS. 

I guess the solution somehow uses is_active() and get_data(). eg i can
have the expression  

( is_active(CYGPKG_MYPKG_OPTION1) ? 
  get_data(CYGPKG_MYPKG_OPTION1_TESTS) : 
  "") 
)

but how do i extend this idea to build a list from multiple instances
of this code. 

Is there some sort of cat(a,b) function? 

   Thanks
        Andrew