It turns out Egbert's changes to enable mixed 32 and 64 bit client and server represent an ABI break for libdrm, since they hadn't made their way into the libdrm upstream before now. D'oh.
libdrm 2.0 is out, having been resynced with all the changes from Xorg CVS (I hope). The 2.0 branch is actually a sub-branch of the 1.0 branch, not that anyone should care too much, and HEAD is now leading to 2.1. I've bumped the libdrm dependency for all the 2d drivers in modular, and I'll try to figure out a way to stick a useful pkgconfig check into the Mesa build. libdrm 2.0 import should land in xc shortly. Get it from the usual place: http://dri.freedesktop.org/libdrm/libdrm-2.0.tar.gz - ajax
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