How do I use the bundled libressl with libh2o? (was: HTTP/2 does not work with examples-simple)

[kysnm]

I am try to compile with -DWITH_BUNDLED_SSL=on option, But examples-simple does not work as expected.

h2o version is v1.0.2

Below is a compile logs:
https://gist.github.com/kysnm/e9b21edab26d3d754685

Please tell me how should be

[kazuho]

@kysnm libh2o uses an external SSL library regardless of how -DWITH_BUNDLED_SSL is configured. So you would need to have either of: OpenSSL (1.0.2 or above), LibreSSL, boringssl installed, and the build script of H2O should be instructed to use the library (as an argument to cmake).

This has been designed as such since it is a bad idea to have dependencies statically linked within an library.

EDIT. and in case of your configuration, the reason why HTTP/2 is not working is because the SSL library being linked is OpenSSL 0.9.8za according to the log; it is too old to support ALPN that is mandatory per the HTTP/2 specification (nor does it support NPN which is supported by some of the client implementations).

[kysnm]

I understand. Thanks for your reply.

EDIT:
I understand that to work correctly with the following

brew install openssl
brew link openssl --force

[kysnm]

Sorry. I closed this issue by mistake

[kazuho]

No problem.

Changed the title, marked as FAQ so that in the hope that this issue would help others having the same question.