[libvirt-users] Where can I get curl-devel version >=7.18.0 . libvirt 0.9.10 compile error with ESX in CentOs

To whom maybe concerned: I compile libvirt 0.9.10 in Centos. Command as follows: cd libvirt-0.9.10 ./configure --with-esx throw exception "configure: error: libcurl >= 7.18.0 is required for the ESX driver " yum install curl-devel: but the version is 7.15.5, is older than 7.18.0. Please Help: where can i get curl-devel version>-7.18.0? Thank you. Mark