You can check on Linux which libraries a program is linked to by running ldd $(which
For example, if you are trying to check the libraries that Python uses:
ldd $(which python)
Should print something like this:
linux-vdso.so.1 (0x00007fff3f191000)
libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007f9b72c14000)
libexpat.so.1 => /lib/x86_64-linux-gnu/libexpat.so.1 (0x00007f9b72be3000)
libz.so.1 => /lib/x86_64-linux-gnu/libz.so.1 (0x00007f9b72bc7000)
libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007f9b7299e000)
/lib64/ld-linux-x86-64.so.2 (0x00007f9b73309000)
See if they are using custom versions of OpenSSL. You should see a library called libssl or something like that. A custom installation of OpenSSL will have its own configuration files.