[Boost-build] [user config] conditional toolset options?

Subject: [Boost-build] [user config] conditional toolset options?
From: Julian Gonggrijp (j.gonggrijp_at_[hidden])
Date: 2011-08-24 10:12:49

Hi,

This is what I'd like to do:

# user-config.jam

using darwin : : 
    : <variant>debug:<compileflags>-Wextra ;

using clang : : 
    : <variant>debug:<compileflags>-fcatch-undefined-behaviour ;

but bjam doesn't support this. Now, in the case of -Wextra it doesn't hurt that much to also specify the flag for release builds, but -fcatch-undefined-behaviour in Clang is really something you want to do for debug builds only.

Is there another way to achieve the same effect?
If there isn't, would this stand a chance if I filed it as a feature request?

Thanks,
-Julian