gnu-smalltalk version 3.2.4-1 failed to build on armel

gnu-smalltalk version 3.2.4-1 failed to build on armel
Link to failed build: https://launchpad.net/ubuntu/+source/gnu-smalltalk/3.2.4-1/+build/2466492

Direct link to the build log: https://launchpad.net/ubuntu/+source/gnu-smalltalk/3.2.4-1/+build/2466492/+files/buildlog_ubuntu-oneiric-armel.gnu-smalltalk_3.2.4-1_FAILEDTOBUILD.txt.gz

This log snippet might be of interest, since it triggered the matcher 'Purging chroot-autobuild'.
Excerpt 4593 lines into the build log:

dpkg-deb: building package `libgtk2-gst-dbgsym' in `../libgtk2-gst-dbgsym_3.2.4-1_armel.ddeb'.
dpkg-deb: building package `gnu-smalltalk-browser-dbgsym' in `../gnu-smalltalk-browser-dbgsym_3.2.4-1_armel.ddeb'.
dpkg-deb: building package `zlib-gst-dbgsym' in `../zlib-gst-dbgsym_3.2.4-1_armel.ddeb'.
dh_compress -a
dh_fixperms -a
dh_makeshlibs -a -Xlib/gnu-smalltalk
perl -w debian/dh_makestarlibs -V
dh_installdeb -a
dh_shlibdeps -a
dpkg-shlibdeps: warning: dependency on libpthread.so.0 could be avoided if "debian/libgtk2-gst/usr/lib/gnu-smalltalk/gst-gtk-3.2.4.so" were not uselessly linked against it (they use none of its symbols).
perl -w debian/dh_stardeps -a
perl -w debian/dh_fixstars -a
dh_fixstars: Can't find "libcairo.so.2" ("libcairo" in "Cairo.star")!
make: *** [binary-arch] Error 2
dpkg-buildpackage: error: /usr/bin/fakeroot debian/rules binary-arch gave error exit status 2
******************************************************************************
Build finished at 20110511-1441
FAILED [dpkg-buildpackage died]
Purging chroot-autobuild/build/buildd/gnu-smalltalk-3.2.4