i'm building freeswitch rpm from spec file

i download freeswitch-1.4.5.tar.bz2 from http://files.freeswitch.org/

but during rpm building there is alot of errors like


Processing files: freeswitch-codec-speex-1.4.5-1.el6.x86_64
error: File not found by glob: /root/rpmbuild/BUILDROOT/freeswitch-1.4.5-1.el6.x86_64/usr/lib64/freeswitch/mod/mod_speex.so*


RPM build errors:
    File not found by glob: /root/rpmbuild/BUILDROOT/freeswitch-1.4.5-1.el6.x86_64/usr/lib64/freeswitch/mod/mod_speex.so*