FindOpenSSL.cmake does not search lib64 directory

Usage
1

find_package(OpenSSL) does not search <OPENSSL_ROOT_DIR>/lib64 for the OpenSSL libs. Is there a reason for that?

OpenSSL 3 in Ubuntu 16 LTS has default lib directory name lib64.

I know of two ways to get around this.

The first is set PKG_CONFIG_PATH like PKG_CONFIG_PATH=<OPENSSL_ROOT_DIR>/lib64/pkgconfig cmake ...

The second is build OpenSSL with --libdir=lib.

Ref: cmake build failed · Issue #12316 · curl/curl · GitHub

2

It appears this issue was fixed in CMake 3.23.0. The Kitware apt repo for Ubuntu 16 LTS is no longer updated and the latest version it offers is CMake 3.20.5.

Ref: https://gitlab.kitware.com/cmake/cmake/-/issues/22945

3

@kyle.edwards?