PGSQL 9.6.2 unable to find readline

Trying to compile pgsql 9.6.2 on Fedora 25

I get the following message:

configure:9345: error: readline library not found
If you have readline already installed, see config.log for details on the
Use --without-readline to disable readline support.
pgac_cv_check_readline=no

libreadline does exist:

[John(at)prod04 postgresql-9.6.2]$ rpm -qv readline
readline-6.3-8.fc24.x86_64

Other relevant info:
gcc 6.3.1

command line:
../configure --prefix=/usr/postgres-9.6.2 --with-openssl --with-
libraries=/usr/lib64

libreadline is in /usr/lib64

ls -l /usr/lib64/libread*
lrwxrwxrwx. 1 root root 18 Feb 4 2016 /usr/lib64/libreadline.so.6 ->
libreadline.so.6.3
-rwxr-xr-x. 1 root root 296072 Feb 4 2016 /usr/lib64/libreadline.so.6.3

This is similar to other posts regarding pgsql 9.3 in the archive but has
anyone found the cause yet?

Thanks.

John