[Boost-build] Avoid site-config.jam and use-config.jam

Subject: [Boost-build] Avoid site-config.jam and use-config.jam
From: Dmitry Timoshenko (dimentiy2k_at_[hidden])
Date: 2011-06-08 17:26:39

Hello,

I found the mention of --ignore-config otpion in boost-system.jam.

I have several questions:

1. How to load parameters currently containg by those files.

As I think I can put the file containig paramters near the Jamroot file, 
say it would be 'config.jam' file.
Then I need to load this file to make targets defined by it to be known 
by boost-build.
How to load the 'config.jam' file?

2. The second question is that. When I put the code below

path-constant BOOST_ROOT : [ os.environ BOOST_ROOT ] ;
use-project boost : $(BOOST_ROOT) ; # this produces an error

into 'site-config.jam' I get an error.

But if I put 'use-project ...' definition into 'user-config.jam' 
everything is fine.
What am I doing wrong?

BJAM OUTPUT:

<Also there are many warnings before the error, I deleted it for the 
sake of brevity>

*** argument error
* rule property-set.refine-from-user-input ( parent-requirements : 
specification * : project-module : location )
* called with: (  : <include>. <define>BOOST_ALL_NO_LIB=1 
<tag>@Jamfile</D:/work/libs/3rdlibs/boost/boost_1_45_0>.tag <conditional
 >@handle-static-runtime <toolset>sun:<stdlib>sun-stlport 
<toolset>como:<link>static <toolset>como-linux:<define>_GNU_SOURCE=1 <xsl
:param>boost.defaults=Boost : 
Jamfile</D:/work/libs/3rdlibs/boost/boost_1_45_0> : 
/D:/work/libs/3rdlibs/boost/boost_1_45_0 )
* missing argument parent-requirements
D:/work/extra/boost-build/build\property-set.jam:411:see definition of 
rule 'refine-from-user-input' being called
D:/work/extra/boost-build/build\project.jam:924: in project
D:\work\libs\3rdlibs\boost\boost_1_45_0\Jamroot:204: in modules.load
D:/work/extra/boost-build/build\project.jam:310: in load-jamfile
D:/work/extra/boost-build/build\project.jam:62: in project.load
D:/work/extra/boost-build/build\project.jam:760: in project.use
D:/work/extra/boost-build/build\project.jam:89: in 
project.load-used-projects
D:/work/extra/boost-build\build-system.jam:258: in load-config
D:/work/extra/boost-build\build-system.jam:361: in load-configuration-files
D:/work/extra/boost-build\build-system.jam:554: in load
D:\work\extra\boost-build\kernel\modules.jam:283: in import
D:\work\extra\boost-build\kernel\bootstrap.jam:142: in boost-build
D:\work\extra\boost-build\boost-build.jam:8: in module scope

Thank you.