Which one is that? If you're referring to http://trac.callcc.org/ticket/158
I reopened it after Felix had closed it as "wontfix." Having the 2nd invocation of "make install" repeat the build from scratch is not that important a bug, and all evidence says it's a Linux specific bug. This level of defect is not a reason to keep the Autoconf build around. In the real world, build systems occasionally have minor bugs. How many bugs do you think people could report with Autoconf itself if they really really tried?
Brandon Van Every