in order to get s3fs running, I first installed the required files via yum. In particular I ran:
yum install fuse
Everything worked as planed, but it installed version 2.7.x
When I went to configure s3fs, it gave me a warning that I needed fuse 2.8.4 or higher.
So I downloaded and installed from source 2.8.5 and it got installed in /usr/local/lib as expected.
ran both modprobe and ldconfig
But, when I go back to run configure on s3fs, it still thinks I've got 2.7.x installed. I ran yum erase fuse in an attempt to unload the 2.7.x version, but still no luck.