pacman4console version 1.2-2 failed to build on amd64 with GCC-4.6/oneiric

pacman4console version 1.2-2 failed to build on amd64 with GCC-4.6/oneiric
Link to failed build: https://launchpad.net/ubuntu/+archive/test-rebuild-20110413/+buildjob/2464332

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/2464332/+files/buildlog_ubuntu-natty-amd64.pacman4console_1.2-2_FAILEDTOBUILD.txt.gz

This log snippet might be of interest, since it triggered the matcher 'Purging chroot-autobuild'.
Excerpt 458 lines into the build log:

pacman.c:(.text+0x1a1e): undefined reference to `wrefresh'
pacman.c:(.text+0x1a2d): undefined reference to `wrefresh'
/tmp/ccLVKLOm.o: In function `PauseGame':
pacman.c:(.text+0x24cb): undefined reference to `wattr_on'
pacman.c:(.text+0x24ee): undefined reference to `mvwprintw'
pacman.c:(.text+0x2511): undefined reference to `mvwprintw'
pacman.c:(.text+0x2534): undefined reference to `mvwprintw'
pacman.c:(.text+0x2543): undefined reference to `wrefresh'
pacman.c:(.text+0x254a): undefined reference to `stdscr'
pacman.c:(.text+0x2552): undefined reference to `wgetch'
collect2: ld returned 1 exit status
make[1]: *** [all] Error 1
make[1]: Leaving directory `/build/buildd/pacman4console-1.2'
make: *** [build-stamp] Error 2
dpkg-buildpackage: error: debian/rules build gave error exit status 2
******************************************************************************
Build finished at 20110425-0923
FAILED [dpkg-buildpackage died]
Purging chroot-autobuild/build/buildd/pacman4console-1.2