Hello, eigen3 failed to build on mipsel, with the strange "configure error". On other platforms it is built fine. Since May 2012 eigen3 always fails to build on "mayer" [1]. On other machines there are no such problems. Please, try to rebuild. gb eigen3_3.1.0~rc1-1 . mipsel Thank you. Anton [1] https://buildd.debian.org/status/logs.php?pkg=eigen3&arch=mipsel