crafty version 23.4-1 failed to build on amd64 with GCC-4.6/oneiric

crafty version 23.4-1 failed to build on amd64 with GCC-4.6/oneiric
Link to failed build: https://launchpad.net/ubuntu/+archive/test-rebuild-20110413/+buildjob/2447834

Details about the rebuild:
https://lists.ubuntu.com/archives/ubuntu-devel/2011-April/033042.html

Direct link to the build log: https://launchpad.net/ubuntu/+archive/test-rebuild-20110413/+buildjob/2447834/+files/buildlog_ubuntu-natty-amd64.crafty_23.4-1_FAILEDTOBUILD.txt.gz

This log snippet might be of interest, since it triggered the matcher 'Purging chroot-autobuild'.
Excerpt 935 lines into the build log:

crafty.o: In function `main':
crafty.c:(.text.startup+0x27a): undefined reference to `numa_available'
crafty.c:(.text.startup+0x2a9): undefined reference to `numa_node_to_cpus'
crafty.c:(.text.startup+0x2ca): undefined reference to `numa_max_node'
collect2: ld returned 1 exit status
make[4]: *** [crafty] Error 1
make[4]: Leaving directory `/build/buildd/crafty-23.4'
make[3]: *** [crafty-make] Error 2
make[3]: Leaving directory `/build/buildd/crafty-23.4'
make[2]: *** [linux-amd64] Error 2
make[2]: Leaving directory `/build/buildd/crafty-23.4'
make[1]: *** [override_dh_auto_build] Error 2
make[1]: Leaving directory `/build/buildd/crafty-23.4'
make: *** [build] Error 2
dpkg-buildpackage: error: debian/rules build gave error exit status 2
******************************************************************************
Build finished at 20110421-1858
FAILED [dpkg-buildpackage died]
Purging chroot-autobuild/build/buildd/crafty-23.4