Re: [Boost-build] Newbie Q

Subject: Re: [Boost-build] Newbie Q
From: Vladimir Prus (ghost_at_[hidden])
Date: 2009-08-29 07:29:17

On Tuesday 04 August 2009 Brent72 wrote:

> 
> Alex Richardson-2 wrote:
> > 
> > Next, at the top of my Jamroot file I have the lines:
> > 
> > path-constant SRC_DIR : . ;
> > SHELL "( cd $(SRC_DIR) && ./extract_boost.sh )" ;
> > 
> > Unlike a 'target' rule, bjam runs the 'SHELL'  rule/command as soon as
> > it is encountered. So as bjam starts to read through my Jamroot file
> > to gether targets, the first thing it does is to run my shell script.
> > 
> 
> Hi.
> 
> I'm also a newbie to bjam and have a similar requirement to John.  I tried
> the above suggestion to run a script that creates/updates a source file.  I
> found that on the first build the script gets updated, but the project isn't
> rebuilt.  On the 2nd build the script gets updated again and the project is
> rebuilt.  It seems to be building the project every 2nd build.

Just a quick update -- I did tries this testcase some time ago, and saw this
"rebuild every other time" issue, but did not debug this further. I shall
look into this soon.

- Volodya