[Boost-build] bjam rule message unknown in module Jamfile /boost_1_37_0/libs/graph/build

Subject: [Boost-build] bjam rule message unknown in module Jamfile /boost_1_37_0/libs/graph/build
From: Paul A. Bristow (pbristow_at_[hidden])
Date: 2008-11-14 11:20:29

Using a new machine (Vista Sp1 and VS2008)  I have been able to build using
several jamfiles from Boost 1.37, trunk and sandbox.

But quite a few items won't build thus (for example):

I:\Boost_sandbox\math_toolkit\libs\math\example>bjam
I:\boost_1_37_0\libs\graph\build\Jamfile.v2:41: in modules.load
rule message unknown in module Jamfile</I:/boost_1_37_0/libs/graph/build>.
I:/boost_1_37_0/boost-build/build\project.jam:312: in load-jamfile
I:/boost_1_37_0/boost-build/build\project.jam:68: in project.load
I:/boost_1_37_0/boost-build/build\project.jam:718: in project.use
I:/boost_1_37_0/boost-build/build\project.jam:94: in load-used-projects
I:/boost_1_37_0/boost-build/build\project.jam:79: in load
I:/boost_1_37_0/boost-build/build\project.jam:120: in load-parent
I:/boost_1_37_0/boost-build/build\project.jam:447: in initialize
I:/boost_1_37_0/boost-build/build\project.jam:301: in load-jamfile
I:/boost_1_37_0/boost-build/build\project.jam:68: in project.load
I:/boost_1_37_0/boost-build/build\project.jam:718: in project.use
I:/boost_1_37_0/boost-build/build\project.jam:94: in load-used-projects
I:/boost_1_37_0/boost-build/build\project.jam:79: in load
I:/boost_1_37_0/boost-build/build\project.jam:120: in load-parent
I:/boost_1_37_0/boost-build/build\project.jam:447: in initialize
I:/boost_1_37_0/boost-build/build\project.jam:301: in load-jamfile
I:/boost_1_37_0/boost-build/build\project.jam:68: in load
I:/boost_1_37_0/boost-build/build\project.jam:170: in project.find
I:/boost_1_37_0/boost-build\build-system.jam:248: in load
I:\boost_1_37_0\boost-build/kernel\modules.jam:261: in import
I:\boost_1_37_0\boost-build/kernel/bootstrap.jam:132: in boost-build
I:\Boost_sandbox\boost-build.jam:43: in module scope

\boost_1_37_0\libs\math\example

And \boost_trunk\libs\math\example

Both build OK.

I've not been able to see what is the feature the failures have in common.

The same modules build OK using 

Nor, despite trying some of the debug options, what I am doing wrong.

Suggestions - please!

Paul

---
Paul A. Bristow
Prizet Farmhouse
Kendal, UK   LA8 8AB
[phone], mobile [phone]
pbristow_at_[hidden]