В cyrus-sasl2.spec
export CPPFLAGS="`/usr/bin/krb5-config --cflags` $CPPFLAG"
приводит к излишним зависимостям (libkrb5.so.3, libk5crypto.so.3 ...)
ldd ./usr/lib/sasl2/libanonymous.so.2.0.18
/usr/lib/sasl2/libanonymous.so.2.0.18:
        libkrb5.so.3 => /usr/lib/krb5/libkrb5.so.3 (0x00121000)
        libk5crypto.so.3 => /usr/lib/krb5/libk5crypto.so.3 (0x0017f000)
        libcom_err.so.2 => /lib/libcom_err.so.2 (0x001a3000)
        libresolv.so.2 => /lib/libresolv.so.2 (0x001a6000)
        libc.so.6 => /lib/libc.so.6 (0x001b9000)
        libcom_err.so.3 => /usr/lib/krb5/libcom_err.so.3 (0x002d4000)
        /lib/ld-linux.so.2 => /lib/ld-linux.so.2 (0x80000000)