=dev-libs/boost-1.49.0-r2 creates bad /usr/include/boost symlink. Reproducible: Always Packages building against boost includes will merrily break on compile such as: sys-block/thin-provisioning-tools-0.1.5-r1 checking boost/bind.hpp usability... no checking boost/bind.hpp presence... no checking for boost/bind.hpp... no configure: error: bailing out Work Around: rm /usr/include/boost ln -s /usr/include/boost-1_49/boost /usr/include/boost
Users will usually encounter this error when doing "emerge -e world".
*** Bug 479594 has been marked as a duplicate of this bug. ***
All boost ebuilds, that present currently in tree handle /usr/include symlink properly