Example output:
$ ./configure
checking whether compiling and linking against OpenSSL works... yes
checking for --with-openssl-rpath...
checking whether OpenSSL provides required APIs... yes
$ ./configure --with-openssl=/home/heimes/dev/python/multissl/openssl/3.0.0
checking for openssl/ssl.h in /home/heimes/dev/python/multissl/openssl/3.0.0... yes
checking whether compiling and linking against OpenSSL works... yes
checking for --with-openssl-rpath...
checking whether OpenSSL provides required APIs... yes
$ ./configure --with-openssl=/home/heimes/dev/python/multissl/openssl/1.0.2u
checking for openssl/ssl.h in /home/heimes/dev/python/multissl/openssl/1.0.2u... yes
checking whether compiling and linking against OpenSSL works... yes
checking for --with-openssl-rpath...
checking whether OpenSSL provides required APIs... no