rstan warning messages

Got past my libgfortran issue
     ln -s  /usr/lib64/libgfortran.so.3 /usr/lib/libgfortran.so

Maybe to /usr/lib64/libgfortran.so ? You _should not_ need to do that
though. I didn't need to.

Now if I could get RCurl and rstan installed.

This one is perplexing. I can't reproduce your failures from my RHEL-6 VM.

Can you provide me the output from:

   rpm -qf /usr/lib64/pkgconfig/libcurl.pc
   rpm -q pkgconfig

Also, if you can run the install.packages again and send me the full
log, that might be helpful.

~tom

==
Red Hat