[Boost-build] Different actions for different versions of the same toolset

From: Franz (fschnyder_at_[hidden])
Date: 2007-10-16 10:32:27

Hello

I use boost.build to build Code for VxWorks, therefore I created a toolset which
inherits from the gcc toolset. This works fine. Now I have to also support a
newer version of VxWorks and I would like to do this with the version support of
the toolset. My Problem is now that its not enough to change some variables for
the actions but I need completely different actions for compiling and linking
but I couldn't figure out how I would define different actions for different
toolset versions.

I would like to do something like this:

# vxworks.jam 
...
actions link.v5 bind LIBRARIES  # linking with version 5
{
   A B C;
} 

actions link.v6 bind LIBRARIES # linking with version 6
{
   X Y Z;
}     
...
 
Is this possible or do I need to create separate toolsets for each version?
I would like to only use one toolset because then I would not need to change all
the usages like

lib   my_lib : $(sources) $(vx_sources)  : <toolset>vxworks ;
lib   my_lib : $(sources) $(win_sources) :                  ;

Because if I use two toolsets I have to change this to:

lib   my_lib : $(sources) $(vx_sources)  : <toolset>vxworks5 ;
lib   my_lib : $(sources) $(vx_sources)  : <toolset>vxworks6 ;
lib   my_lib : $(sources) $(win_sources) :                   ;

Thanks,

- Franz