Re: [jamboost] Build v1 custom targets (autogen source)

From: Victor A. Wagner Jr. (vawjr_at_[hidden])
Date: 2004-08-27 12:54:22

At Friday 2004-08-27 07:28, you wrote:
>First, thanks for the good build system. It is significantly better
>than Makefiles for cross-platform and multiple variant builds. Plus,
>the default is to do out of tree builds, which I really like. However,
>now that I'm trying to do a little bit more than just compile source
>code, I'm having some troubles.
>
>I have a source file that is automatically generated from a script,
>and I was wondering how to incorporate that into the build processes.
>Basically, it is a version.cpp, that is generated from a "version"
>file and a "gen_version.py" script.
>
>As a Makefile it would be:
>
>---------------
> a: version.cpp program.cpp
> $(CC) ...
>
> .PHONY: version.cpp # This causes it to be rebuilt each time

why do you want it rebuilt every time. One would hope that you'd really 
only want it built if version or gen_version.py had changed

> version.cpp: version gen_version.py
> ./gen_version.py
>---------------
>
>Someone mentioned that for V2 it would look like
>
>---------------
> exe a : program.cpp version.cpp ;
>
> make version.cpp : script.py version : $(__name__).update-version ;
>
> actions update-version
> {
> $(>[1]) -o $(<) $(>[2])
> }
>----------------
>
>However, they didn't know how to do it with V1, saying it probably
>would require a new main target rule.
>
>I would be okay with switching to V2, except last time I tried, V2
>didn't have the bindings for python extensions, which is one of the
>primary reasons for me to use bjam in the first place. Also, I have to
>say I went through quite a bit to get my V1 scripts to work, I don't
>really want to go through all that again.
>
>Is it possible/simple to do this in Build V1? I realize it may be
>things like this that made decide to write V2 in the first place.
>
>Thanks,
>John
>=:->
>
>
>
>
>
>Yahoo! Groups Links
>
>
>
>

Victor A. Wagner Jr. http://rudbek.com
The five most dangerous words in the English language:
"There oughta be a law"