Just in case this information is helpful to someone, I thought I would post
how I compiled cURL on RHEL5U2 so that it has SFTP capability.

FYI, here are the steps:

Installed:

                libssh2-0.17-1.el5.rf.i386.rpm

                then

                libssh2-devel-0.17-1.el5.rf.i386.rpm

                (from http://packages.sw.be/libssh2/)

Unzipped curl-7.19.3.tar.gz

                (from http://curl.haxx.se/download/curl-7.19.3.tar.gz)

From within the curl directory: [root_at_machine4 curl-7.19.3]#

                ./configure --with-libssh2

                make

                make install
Received on 2009-01-24