问题1：configure: error: Cannot find imap library (libc-client.a). Please check your c-client installation.

解决：yum install -y libc-client-devel

问题2：

解决：

ln -s /usr/lib64/libc-client.so /usr/lib/libc-client.so

--with-imap --with-kerberos --with-imap-ssl