gwave version 20090213-3 failed to build on amd64 with GCC-4.6/oneiric

gwave version 20090213-3 failed to build on amd64 with GCC-4.6/oneiric
Link to failed build: https://launchpad.net/ubuntu/+archive/test-rebuild-20110413/+buildjob/2452451

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/2452451/+files/buildlog_ubuntu-natty-amd64.gwave_20090213-3_FAILEDTOBUILD.txt.gz

This log snippet might be of interest, since it triggered the matcher 'Purging chroot-autobuild'.
Excerpt 1589 lines into the build log:

/build/buildd/gwave-20090213/spicefile/wavefile.c:400: undefined reference to `g_free'
libspicefile.a(wavefile.o): In function `wt_free':
/build/buildd/gwave-20090213/spicefile/wavefile.c:340: undefined reference to `g_free'
libspicefile.a(wavefile.o): In function `wf_free':
/build/buildd/gwave-20090213/spicefile/wavefile.c:327: undefined reference to `g_free'
collect2: ld returned 1 exit status
make[3]: *** [test_read] Error 1
make[3]: Leaving directory `/build/buildd/gwave-20090213/spicefile'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/build/buildd/gwave-20090213'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/build/buildd/gwave-20090213'
dh_auto_build: make -j1 returned exit code 2
make: *** [build] Error 2
dpkg-buildpackage: error: debian/rules build gave error exit status 2
******************************************************************************
Build finished at 20110423-0846
FAILED [dpkg-buildpackage died]
Purging chroot-autobuild/build/buildd/gwave-20090213