[Boost-build] How to insert generated *.hpp files into dependency chain?

From: Roland Schwarz (roland.schwarz_at_[hidden])
Date: 2008-03-18 09:04:07

I am trying to introduce a code generator into my build chain,
but I have no idea how to make it work. The "mygenerator"
makes a *.hpp file from a *.psp file.
I can understand that the make rule will put the target into
a variant directory. But how shall I
1) tell the lib rule that it depends on the implicit generated.hpp
   which is included by mysource.cpp and trigger an update?
   (<dependecy> as shown does not work)
2) Tell the lib rule to add an include path to the variant
   directory where the generated.hpp has been put

I must overlook something fundamental, since a similar scenario arises when
trying to use bison/yacc. Any help eagerly awaited.

project mylib
    : usage-requirements <include>../../include
    : requirements
        <threading>multi
        <include>../../include
    : source-location ../../src
    : default-build release
    ;
   
lib mylib
    : mysource.cpp
    :  <dependency>generated.hpp
    ;

make generated.hpp
    : generated.psp
    : @mygenerator
    ;
   
actions mygenerator
{
    mygenerator $(>) -o $(<)
}

Regards, Roland aka speedsnail