The bonobo build-process creates and installs libtool library files which
should be in the -devel package also:

$ ls /var/tmp/bonobo-1.0.17-root/usr/lib/*.la
/var/tmp/bonobo-1.0.17-root/usr/lib/libbonobo-print.la
/var/tmp/bonobo-1.0.17-root/usr/lib/libbonobo.la
/var/tmp/bonobo-1.0.17-root/usr/lib/libbonobox.la
/var/tmp/bonobo-1.0.17-root/usr/lib/libefs.la

$ rpm -ql `rpm -qa | grep bonobo` | grep .la
/usr/bin/bonobo-slay
/usr/bin/bonobo-audio-ulaw
/usr/bin/bonobo-text-plain
/usr/lib/bonobo/monikers/libmoniker_std.la
/usr/lib/bonobo/plugin/libstorage_efs.la
/usr/lib/bonobo/plugin/libstorage_fs.la

$ rpm -qa | grep bonobo
bonobo-activation-0.9.3.90-1
bonobo-devel-1.0.17-1
bonobo-1.0.17-1
bonobo-activation-devel-0.9.3.90-1