Created attachment 14878 [details]
Full build log for tp-glib on ppc64

Summary says it all.  Here's a snippet from the build log, where it fails:
<snip>
ranlib .libs/libtelepathy-glib-internal.a
creating libtelepathy-glib-internal.la
(cd .libs && rm -f libtelepathy-glib-internal.la && ln -s ../libtelepathy-glib-internal.la libtelepathy-glib-internal.la)
/usr/bin/nm -B .libs/libtelepathy-glib-internal.a > _gen/abi.nm
grep " T " < _gen/abi.nm > _gen/abi.funcs
make[3]: *** [_gen/abi.txt] Error 1
make[3]: Leaving directory `/builddir/build/BUILD/telepathy-glib-0.7.4/telepathy-glib'
make[2]: *** [all] Error 2
rm _gen/tp-spec-channel.xml _gen/tp-spec-generic.xml _gen/tp-spec-connection.xml _gen/tp-spec-dbus-daemon.xml _gen/tp-spec-media-session-handler.xml _gen/tp-spec-connection-manager.xml _gen/tp-spec-media-stream-handler.xml
make[2]: Leaving directory `/builddir/build/BUILD/telepathy-glib-0.7.4/telepathy-glib'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/builddir/build/BUILD/telepathy-glib-0.7.4'
make: *** [all] Error 2
<snip>

This appears to be due to the fact that some architectures use function descriptors, which will be prefixed by ' D ' not ' T ' in the 'nm' output.