[Boost-build] [qt4] Changes required by Qt-4.2.0

From: Juergen Hunold (hunold_at_[hidden])
Date: 2006-10-19 15:17:22

Hi !

I've attached a rather big patch for qt4.jam.
It conatins the necessary fixes needed by the changes Trolltech made in 
Qt-4.2.0

Trolltech removed the ability to have _both_ release and debug version 
built in one go  and removed the "_debug" suffix on "make" based 
systems (most unices and most probably mingw.)
MSVC-based installs still have the "d" suffix for debug builds and both 
release and debug libraries/dlls available. Unix users must run a 
separate built targeting a different "install" directory.
 
The proposed patch tries to address this change.
1. It removes the explicit "release" alternative on all platforms. This 
makes the release libraries the standard and allows Unix users to point 
qt4.jam to the debug libraries instead. Remember they have the same 
names now...
2. It provides "debug" built alternative for <toolset>msvc. This enables 
using the debug libraries on msvc based builts.

The first point also enables custom build variant 
like "<variant>custom".

I'd like to get those changes into 1_34_0, too.
It might be little late, but I think it's worth the effort.
And this is "new" toolset.

Comments ?

Yours,

Jürgen
-- 
* Dipl.-Math. Jürgen Hunold  ! Ingenieurgesellschaft für 
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