On Tue, 30 Sep 2014 02:57:12 GMT, zhaopuming wrote:

On Mon, 29 Sep 2014 16:14:26 GMT, zhaopuming wrote: 

Package openssl-1.0.0-27.el6.x86_64 already installed and latest version

After further looking I found that this was due to libevent 1.4 still in the system and libevent2.0 was shadowed. I removed libevent1.4 and errors in libevent_pthreads.so are gone. but there is still: 

../../../../root/.dub/packages/vibe-d-0.7.21-beta.4/libvibe-d.a(openssl_3963_569.o): In function `_D4vibe6stream7openssl14OpenSSLContext12setECDHCurveMFAyaZv':
/opt/zpm/d/hello/../../../../root/.dub/packages/vibe-d-0.7.21-beta.4/source/vibe/stream/openssl.d:487: undefined reference to `EC_KEY_new_by_curve_name'
/opt/zpm/d/hello/../../../../root/.dub/packages/vibe-d-0.7.21-beta.4/source/vibe/stream/openssl.d:487: undefined reference to `EC_KEY_free'

I think these functions were only introduced in OpenSSL 1.0.1. But if you don't need to serve ECDH chipers, the easiest solution would be to just comment out that code section (the body of setECDHCurve).