Use pkg-config for determining the OpenSSL path instead of using /usr/local by default under Linux #120
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Pretty much any modern Linux distribution is using
pkg-configthese days to share a few common details about the way packages are configured and installed on the host system. Theopensslpackage (at least under Ubuntu/Debian) exposes the prefix it is installed under with theprefixvariable inpkg-config.These modifications are using
pkg-configto determine the prefix foropenssl.Using
/usr/localas a default will fail to build Ruby with OpenSSL support, "silently" (it's just not detected at compile time), with the symptom simply being that any Ruby built withfrumwon't have TLS/SSL support. This is especially relevant for the latest Ubuntu release (22.04, Jammy Jellyfish) since it ships with OpenSSL 3.x for which there currently is no support in the OpenSSL gem.