Librdkafka: Dont use OpenSSL on OSX

[edenhill]

Apple has deprecated their bundled OpenSSL / libcrypto on OSX 10.7.
See here:
http://rentzsch.tumblr.com/post/33696323211/wherein-i-write-apples-technote-about-openssl-on

We should be using CommonCrypto on OSX, or some 3rd party SSL library.

[edoardocomar]

I used the brew version
brew install openssl
and then run configure with the settings:

CPPFLAGS=-I/usr/local/opt/openssl/include LDFLAGS=-L/usr/local/opt/openssl/lib ./configure

[joekarl]

Just ran into this, big thanks to @edoardocomar for the hint on compiling against a local openssl.

For me this was manifesting itself as:
ERROR|rdkafka#consumer-1| ssl://kafka-1:9092/bootstrap: SSL handshake failed: /BuildRoot/Library/Caches/com.apple.xbs/Sources/OpenSSL098/OpenSSL098-59.60.1/src/ssl/s23_clnt.c:618: error:140770FC:SSL routines:SSL23_GET_SERVER_HELLO:unknown protocol:

Linking with the brew installed openssl helped solve the problem for the near term, but definitely was a pain to track this down and makes building tooling around librdkafka a pain.

[edenhill]

Brew OpenSSL works fine, closing this issue.