Re: [Boost-build] build variant output directory

Subject: Re: [Boost-build] build variant output directory
From: Juergen Hunold (juergen.hunold_at_[hidden])
Date: 2008-10-04 12:19:57

Hi Sebastian !

On Friday 03 October 2008 01:34:15 Sebastian Hauer wrote:
> Hello,
> I was just wondering if there is some way of defining a variant's
> build output directory.  The current build output directory nesting is
> just to deep for my project.  Since I only have one debug variant and
> one release variant having a simple build output directory like:
>
> bin/debug
> bin/release

Well, that's not possible.

> would completely suffice.  But instead boost build insists on storing
> everything in directories based on the selected feature set:
>
> bin\msvc-8.0\debug\threading-multi
> bin\msvc-8.0\release\debug-symbols-on\threading-multi
>
> Also notice the additional debug-symbols-on in the release build path
> since I selected to enable debug symbols for release builds.

Okay, here is my solution for this case:
First, to remove "threading-multi" just add

import feature ;
feature.set-default threading      : multi ;

to your user-config-jam (or Jamroot, if you want do disable it on a per-project 
base.) This will make "threading-multi" the default and thus remove it from 
the patch. But be sure to make a complete rebuild afterwards ;-))

The shorten paths even more, define your own variants. This is what I use to 
get "Release with Debugsymbols":

# define develop variant
# - without NDEBUG defined (with assert())
# - with debug-symbols
variant develop : <optimization>speed
                  <debug-symbols>on
                  <inlining>full
                  <runtime-debugging>off  ;

You can try and see if you can get rid of the compiler using this technique, 
too. Or you can make "<debug-symbols>on" the default value for all builds, 
using the technique above.

Hope this helps !

Yours,

Jürgen
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