freeRADIUS does not "see" openssl

I have a problem with freeRADIUS version 2.1.3. I have openssl installed in /usr/local/ssl. T? build the freeRADIUS server, I used this command: ./configure --with-openssl-include=/usr/local/ssl/include --with-openssl-libraries=/usr/local/ssl/lib However, the freeRADIUS just does not see the openssl and reports the followings: 1. configure: skipping test for openssl/ssl.h? -- why skip? Because it was told? 2. Checking OpenSSL support... no What configuration did I miss such that the server did does not see the openssl? Thanks.