Re: [Boost-build] boost jam and gob files

From: Reece Dunn (msclrhd_at_[hidden])
Date: 2005-12-19 12:47:20

>Hello, can anybody please give me some help on how to set up some jam rules 
>for
>running gob files through the gob preprocessor? Files with the suffix 
>".gob"
>will, upon being run through the gob command, produce corresponding ".c" 
>and
>".h" files.

Create a file called gob.jam and place it where BBv2 can find it (easiest 
place is the build/v2/tools directory).

First, you need to register the gob extension:

   import type ;

   type.register GOB : gob ;

Here, GOB is a placeholder name for the extension gob. You now need to 
register an action to perform on that file:

   generators.register-standard gob.gob : GOB : C H ;

Where gob.gob is the file.action to call for this transformation, GOB is the 
*source* and C and H are the *targets* to transform to. That is:

   GOB --> C H

You now need the action:

   actions gob
   {
      gobpp $(>) $(<[1]) $(<[2])
   }

Where gobpp is the gob preprocessor, $(>) is the name of the gob file, 
$(<[1]) is the name of the C file and $(<[2]) is the name of the H file.

You can then add

   import gob ;

to your user-config.jam file to pull in this. Then

   exe myapp : hello.cpp world.gob ;

will compile world.gob using the gobpp.

For more information, have a look at the BoostBuild v2 documentation 
(http://www.boost.org/boost-build2) and the various transforming tools (e.g. 
lex.jam).

HTH,
Reece