Compile 12.2 with specific OpenSSL libraries

I'm compiling PG 12.2 (on CentOS 7) and need to ensure that it uses a
specific version of OpenSSL (1.1.1h). I've added what I think are the
appropriate `./configure` flags (see below) and compilation is successful
but when I run `ldd -d initdb` or `readelf` I can see that it linked to a
different version of libcrypto/libssl.

--with-openssl --with-includes=/path/to/ssl/include
--with-libraries=/path/to/ssl/lib

My theory is that even though I'm adding --with-libraries/--with-includes,
the build script is finding and using the version of OpenSSL in /lib64/
because it has higher precedence somewhere.

How can I force the build to use the version of OpenSSL in the directories
I specify and not in the system /lib64/ directory?

--
Joshua Poehls
joshua(at)poehls(dot)me