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This is kind of odd! qemu depends on a package ceph, it depends on google-perftools and that depends on gv??? The old motif bases ps/pdf viewer???!!! How uses gv anymore! This might be google-perftools bug, but all of these dependencies do not make sense!
QEMU uses CEPH as a block storage backend. The CEPH binaries use libtcmalloc.so as a fast malloc implementation. This library is provided by the google-perftools PRM. Unfortunately this RPM also includes a command line program 'pprof' which depends on graphviz/gv. The result of this is that installing QEMU pulls in graphviz which is really not desirable. At least the basic /usr/lib64/libtcmalloc.so.0* library which any app might want to link to, should be in a separate google-perftools-libs sub-RPM to allow its use without pulling in the actual perftools command line tools which are only relevant at dev time.
*** This bug has been marked as a duplicate of bug 748145 ***