[boost] Jamfile.v2 failing for several doc directories

From: Larry Evans (cppljevans_at_[hidden])
Date: 2004-07-23 21:27:18

How do I avoid the following errors?

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cd /home/evansl/prog_dev/boost-cvs/boost/libs/variant/doc/
bjam --v2
/home/evansl/prog_dev/boost-cvs/boost/tools/build/v2/tools/boostbook.jam:322: 
in construct
warning: rulename $(base-target).depends expands to empty string
/home/evansl/prog_dev/boost-cvs/boost/tools/build/v2/build/targets.jam:1025: 
in object(boostbook-target-class)@1.generate
/home/evansl/prog_dev/boost-cvs/boost/tools/build/v2/build/targets.jam:546: 
in generate-really
/home/evansl/prog_dev/boost-cvs/boost/tools/build/v2/build/targets.jam:519: 
in object(main-target)@1.generate
/home/evansl/prog_dev/boost-cvs/boost/tools/build/v2/build/targets.jam:203: 
in object(project-target)@11.generate
/home/evansl/prog_dev/boost-cvs/boost/tools/build/v2/build-system.jam:160: 
in load
/home/evansl/prog_dev/boost-cvs/boost/tools/build/v2/kernel/modules.jam:259: 
in import
/home/evansl/prog_dev/boost-cvs/boost/tools/build/v2/kernel/bootstrap.jam:120: 
in boost-build
/home/evansl/prog_dev/boost-cvs/boost/boost-build.jam:12: in module scope
/home/evansl/prog_dev/boost-cvs/boost/tools/build/v2/tools/boostbook.jam:326: 
in construct
warning: rulename $(target).set-path expands to empty string

 >----------------

TIA.
Larry