TruffleRuby provides the openssl module but not the native libssl system
library that the module uses. TruffleRuby supports both versions 1.0.2 and 1.1.0.
If you experience openssl-related errors, it might help to recompile the
openssl module by running lib/truffle/post_install_hook.sh.
This is done automatically by Ruby managers, and mentioned in the post-install
message when installing TruffleRuby via gu install in GraalVM.
$ sudo dnf install openssl-devel$ sudo apt-get install libssl-devOn macOS the system version is too old.
We recommend installing libssl via Homebrew.
$ brew install opensslMacPorts should also work but is not actively tested.
$ sudo port install openssl