A second look at SCons performance

Being comfortable with Python I tend to use SCons for my C/C++ projects and have been quite happy with it. Though performance is not one of its strengths I like it because:

* it is well documented

* easy to extend (custom builders)

* has a whole lot of standard builders

* correct (md5 instead of timestamps as default).

For Java, I still use maven though the xml tends to be a pain.

What about waf? http://code.google.com/p/waf/