c – 如何安装Modular Boost？

我按照https://svn.boost.org/trac/boost/wiki/TryModBoost的指示,b2命令失败：

./b2 headers
/home/wichtounet/src/modular-boost/tools/build/src/build/feature.jam:493: in feature.validate-value-string from module feature
error: "none" is not a known value of feature <optimization>
error: legal values: "off" "speed" "space"
/home/wichtounet/src/modular-boost/tools/build/src/build/property.jam:273: in validate1 from module property
/home/wichtounet/src/modular-boost/tools/build/src/build/property.jam:299: in property.validate from module property
/home/wichtounet/src/modular-boost/tools/build/src/tools/builtin.jam:377: in variant from module builtin
/usr/share/boost-build/site-config.jam:9: in modules.load from module site-config
/home/wichtounet/src/modular-boost/tools/build/src/build-system.jam:249: in load-config from module build-system
/home/wichtounet/src/modular-boost/tools/build/src/build-system.jam:351: in load-configuration-files from module build-system
/home/wichtounet/src/modular-boost/tools/build/src/build-system.jam:524: in load from module build-system
/home/wichtounet/src/modular-boost/tools/build/src/kernel/modules.jam:289: in import from module modules
/home/wichtounet/src/modular-boost/tools/build/src/kernel/bootstrap.jam:139: in boost-build from module
/home/wichtounet/src/modular-boost/boost-build.jam:17: in module scope from module

我尝试在命令行中添加optimize = speed,但没有改变任何东西.我尝试了大师和开发分支.我尝试用clang和gcc工具集.

有人有一个想法如何安装Modular Boost？

有没有必要的配置(和哪里)？还是有另一个程序要遵循？

编辑：它似乎来自可能由Gentoo安装的/usr/share/boost-build/site-config.jam文件.我需要能够告诉b2忽略这个文件.