Hey folks, I know there is an ongoing thread about build failure with Windows XP and cygwin, but I believe the problem goes beyond that platform. I'm building on several different platforms and have run into a similar problem with the <threadapi> parameter. I build on FreeBSD 6.2, Ubuntu 7 (Intel), Ubuntu 6 (PPC) and lastly, Win32. I have NOT tested this out on a win32 platform yet. Using FreeBSD with gcc 3.4.2 and Linux with gcc 4.2 you can reproduce the problem very quickly from the current trunk. In your boost directory, simply enter the following: *bjam --with-wave*. You'll have something like the following: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ error: No best alternative for libs/thread/build/thread_sources next alternative: required properties: <threadapi>win32 <threading>multi not matched next alternative: required properties: <threadapi>pthread <threading>multi not matched /root/boost/tools/build/v2/build/generators.jam:859: in try-one-generator-really *** argument error * rule object(gcc-linking-generator)@33.run ( project name ? : property-set : sources + ) * called with: ( object(project-target)@388 boost_thread : object(property-set)@411 : ) * missing argument sources /root/boost/tools/build/v2/tools/gcc.jam:405:see definition of rule 'run' being called /root/boost/tools/build/v2/build/generators.jam:920: in try-one-generator /root/boost/tools/build/v2/build/generators.jam:1131: in construct-really /root/boost/tools/build/v2/build/generators.jam:1204: in generators.construct /root/boost/tools/build/v2/tools/builtin.jam:502: in object(lib-generator)@5.run /root/boost/tools/build/v2/build/generators.jam:859: in try-one-generator-really /root/boost/tools/build/v2/build/generators.jam:920: in try-one-generator /root/boost/tools/build/v2/build/generators.jam:1131: in construct-really /root/boost/tools/build/v2/build/generators.jam:1204: in generators.construct /root/boost/tools/build/v2/build/targets.jam:1368: in construct /root/boost/tools/build/v2/build/targets.jam:1206: in object(typed-target)@404.generate /root/boost/tools/build/v2/build/targets.jam:742: in generate-really /root/boost/tools/build/v2/build/targets.jam:715: in object(main-target)@406.generate /root/boost/tools/build/v2/build/targets.jam:858: in targets.generate-from-reference /root/boost/tools/build/v2/build/targets.jam:1129: in generate-dependencies /root/boost/tools/build/v2/build/targets.jam:1179: in object(typed-target)@134.generate /root/boost/tools/build/v2/build/targets.jam:742: in generate-really /root/boost/tools/build/v2/build/targets.jam:715: in object(main-target)@206.generate /root/boost/tools/build/v2/build/targets.jam:254: in object(project-target)@130.generate /root/boost/tools/build/v2/build/targets.jam:858: in targets.generate-from-reference /root/boost/tools/build/v2/build/targets.jam:1129: in generate-dependencies /root/boost/tools/build/v2/build/targets.jam:1179: in object(alias-target-class)@128.generate /root/boost/tools/build/v2/build/targets.jam:742: in generate-really /root/boost/tools/build/v2/build/targets.jam:715: in object(main-target)@196.generate /root/boost/tools/build/v2/build/targets.jam:254: in object(project-target)@84.generate /root/boost/tools/build/v2/build-system.jam:663: in load /root/boost/tools/build/v2/kernel/modules.jam:267: in import /root/boost/tools/build/v2/kernel/bootstrap.jam:134: in boost-build /root/boost/boost-build.jam:11: in module scope ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Using the suggestions from the mail list thread titled: /[boost] [1.35.0] Threads - build failure using gcc on Win XP,/ I tried the following: *bjam --with-wave threadapi=pthread * You will then have something as follows: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ /root/boost/tools/build/v2/build/property.jam:285: in validate1 from module property error: Invalid property '<threadapi>pthread': unknown feature 'threadapi'. /root/boost/tools/build/v2/build/property.jam:294: in property.validate from module property /root/boost/tools/build/v2/build/build-request.jam:193: in convert-command-line-element from module build-request /root/boost/tools/build/v2/build/build-request.jam:148: in build-request.from-command-line from module build-request /root/boost/tools/build/v2/build-system.jam:559: in load from module build-system /root/boost/tools/build/v2/kernel/modules.jam:267: in import from module modules /root/boost/tools/build/v2/kernel/bootstrap.jam:134: in boost-build from module /root/boost/boost-build.jam:11: in module scope from module ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Most of my projects are multi-threaded in nature, and thus can not use the Boost 1.35.0 release since this problem doesn't allow me to build. Interesting enough, the Boost.Thread examples do build without a problem. I'm not a bjam Jamfile expert, so I don't even know where to begin trying to fix the Boost.Thread Jamfile.