[Boost-build] Defining new variant

Subject: [Boost-build] Defining new variant
From: Dieter Van de Walle (dieter.vandewalle_at_[hidden])
Date: 2010-11-10 10:46:09

Hi,

I am just trying to create a new variant with some extra <cflags> enabled.
I just add the line:

variant any_variant_name : debug :
        <cflags>some_flag ;

I keep getting the following error:

/usr/share/boost-build/build/feature.jam:395: in extend-feature from module feature
error: any_variant_name is already associated with the "<variant>" feature
/usr/share/boost-build/build/feature.jam:568: in feature.extend from module feature
/usr/share/boost-build/tools/builtin.jam:321: in variant from module builtin
/workspace/path/common.jam:58: in modules.load from module Jamfile</project/path>
/usr/share/boost-build/build/project.jam:312: in load-jamfile from module project
/usr/share/boost-build/build/project.jam:68: in load from module project
/usr/share/boost-build/build/project.jam:170: in project.find from module project
/usr/share/boost-build/build/targets.jam:356: in find-really from module object(project-target)@42
/usr/share/boost-build/build/targets.jam:410: in object(project-target)@42.find from module object(project-target)@42
/usr/share/boost-build/build/targets.jam:861: in resolve-reference from module targets
/usr/share/boost-build/build/targets.jam:880: in targets.generate-from-reference from module targets
/usr/share/boost-build/build/targets.jam:1170: in generate-dependencies from module object(typed-target)@64
/usr/share/boost-build/build/targets.jam:1221: in object(typed-target)@64.generate from module object(typed-target)@64
/usr/share/boost-build/build/targets.jam:765: in generate-really from module object(main-target)@89
/usr/share/boost-build/build/targets.jam:738: in object(main-target)@89.generate from module object(main-target)@89
/usr/share/boost-build/build/targets.jam:255: in object(project-target)@42.generate from module object(project-target)@42
/usr/share/boost-build/build-system.jam:414: in load from module build-system
/usr/share/boost-build/kernel/modules.jam:261: in import from module modules
/usr/share/boost-build/kernel/bootstrap.jam:132: in boost-build from module
/usr/share/boost-build/boost-build.jam:1: in module scope from module

I have absolutely no clue.

At this opportunity I would again like to express my frustration at the fact that the
best C++ buildtool available has the most unaccessible scripting language ever...
Absolutely nothing I try to do with the jam language seems to succeed ...

Dieter

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