Re: [jamboost] Targets in command line( Was: I'm back!)

From: David Abrahams (dave_at_[hidden])
Date: 2002-10-18 09:00:57

Vladimir Prus <ghost_at_[hidden]> writes:

> David Abrahams wrote:
> 
> Good. Probably, when all of Boost is buildable (I haven't tried
> Python, and there might be some problems with threads), you can try
> to implement this? That's a good change to dig into as yet unknown
> parts of code.

I'll try.

> >>>Yeah, it is... though I think we ought to consider supporting such
> >>>things as:
> >>>
> >>> bjam --compile=foo/bar/baz.cpp
> >>> bjam --preprocess=foo/bar.cpp
> >>>
> >>>
> >>>and probably also:
> >>>
> >>> bjam --recompile=foo/bar/baz.cpp # no dependency checking!
> >>
> >>Well, the last thing is just "-a" switch to bjam. About "--compile"... 
> >>is it in any way different from
> >>
> >> bjam foo/bar/baz.o
> > 
> > 
> > It's a push -vs- pull thing. When I "just want to compile this file" I
> > don't want to have to think about what kind of target it generates or
> > how to name it.
> 
> I get you. However, the only semantic I can think of is:
> 
> execute only the actions which are compiles, and which uses
> foo/bar/baz.cpp

What about just, "execute all actions which have foo/bar/baz.cpp as an
immediate source"?

> You know, this is similar to my old idea to run only selected actions, 
> which are not universaly available. For example, using a modification of 
> your proposed syntax:
> 
> bjam --action=bison.bison
> 
> Would construct dependency graph for "." and run only "bison.bison" 
> actions. Back you what you've proposed, we can allow
> 
> bjam --action=*.compile
> 
> to run all compile action and some variation of this syntax for compile 
> only one source file:
> 
> bjam --action=*.compile%foo/bar/baz.cpp

Hmm, it's kind of ugly. Let's make this a low priority until we think
of a nice way to express it, OK?

-- 
David Abrahams
dave_at_[hidden] * http://www.boost-consulting.com
Building C/C++ Extensions for Python: Dec 9-11, Austin, TX
http://www.enthought.com/training/building_extensions.html