Newbie bjam questions (v1)

From: Andreas Huber (ahd6974-spamgroupstrap_at_[hidden])
Date: 2004-11-07 18:13:39

Let me first say that bjam *rocks*. With an investment of just half a 
day I got to a point where most of what I wanted to do works. However, I 
was unable to find answers to the following questions (see Jamfile 
attached):

1. Is there any way to "abstract away" <lib>/<dll>? For example, to 
specify the Boost.Thread library as a dependency I had to add 
<dll>../../thread/build/boost_thread to the sources. On Windows, the 
static library variant doesn't exist so adding <lib>.. to the sources 
leads to an error. This is ok, but I need to know/specify more than 
absolutely necessary. It would be nice to just say that a target depends 
on the thread library and the build system then figures out by itself 
whether the static or the dynamic variant should be used (maybe through 
a preference the user specifies on the command line).

2. In boost::fsm all state classes contain virtual member functions but 
have non-virtual destructors. GCC rightly issues a warning on this, 
the gcc toolset and all its extensions (AFAICT, there are currently 5)? 
Someday someone will add another extension and the warnings that are 
disabled for the already existing extensions will appear for the new 
extension until my Jamfile is adapted.

3. In 1.31 the vc7.1 toolset seems to be broken wrt single-threaded 
builds. When one tries to build with <threading>single the .cpp files 
are not built with /ML (single-threaded) but with /MD (multi-threaded). 
Is this a known issue?

4. I'm currently compiling PingPong.cpp twice with different target 
names. This is due to the fact that the single-threaded exe target does 
not depend on the threads dll while the multi-threaded target does. This 
is somewhat inconvenient and I would rather like to say that 
PingPong.exe is only dependent on the threads dll in multi-threaded 
builds. Is there any way to do that?

Thanks & Regards,

-- 
Andreas Huber
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