djvulibre 3.5.24-1 is not built with $RPM_OPT_FLAGS: http://kojipkgs.fedoraproject.org/packages/djvulibre/3.5.24/1.fc17/data/logs/x86_64/build.log 3.5.22-2 did not have this problem: http://kojipkgs.fedoraproject.org/packages/djvulibre/3.5.22/2.fc15/data/logs/x86_64/build.log
http://koji.fedoraproject.org/koji/taskinfo?taskID=4575921