Thanks for answering (on a weekend)!

On Sat, Sep 26, 2009 at 5:16 PM, Vladimir Prus <vladimir@codesourcery.com> wrote:
You have snipped the backtrace, which is the only thing that can help
diagnose this. 
Sorry, here it is:
(builtin):see definition of rule 'SHELL' being called
/usr/share/boost-build/build/toolset.jam:36: in toolset.using
/usr/share/boost-build/build/project.jam:825: in using
/usr/share/boost-build/user-config.jam:20: in modules.load
/usr/share/boost-build/build-system.jam:104: in load-config
/usr/share/boost-build/build-system.jam:154: in load
/usr/share/boost-build/kernel/modules.jam:261: in import
/usr/share/boost-build/kernel/bootstrap.jam:132: in boost-build
/usr/share/boost-build/boost-build.jam:1: in module scope
 
You did not say what version of Boost.Build you are using. I recommend that you
grab a nightly build from http://boost.org/boost-build2 and give it a try.
I am not sure it was labelled as such but I installed it at the same time when boost 1.39 was the current boost library.
I have not downloaded a nightly build and things progress much further (I did not yet upgrade the developer tools, ie, I still run XCode 3.1.3 that I had installed on Leopard):
bjam
sh: g++: command not found
...found 9 targets...
...updating 2 targets...
darwin.compile.c++ bin/darwin/debug/HelloWorld.o
/bin/sh: line 1: g++: command not found

    "g++"  -ftemplate-depth-128 -fcoalesce-templates -O0 -fno-inline -Wall -g -dynamic -no-cpp-precomp -gdwarf-2 -Wno-long-double -fPIC     -c -o "bin/darwin/debug/HelloWorld.o" "HelloWorld.cpp"

...failed darwin.compile.c++ bin/darwin/debug/HelloWorld.o...
...skipped <pbin/darwin/debug>helloworld for lack of <pbin/darwin/debug>HelloWorld.o...
...failed updating 1 target...
...skipped 1 target...