Thanks Jeffrey, but your explanation of how to do it ("just call OPENSSL_config") contradicts what drook already seems to have tried and reported to fail in an earlier comment: https://sourceforge.net/p/curl/bugs/1208/#9c55

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** [bugs:#1208] curl is unable to load non-default openssl engines**
**Status:** closed-later
**Labels:** openssl 
**Created:** Mon Mar 25, 2013 12:18 AM UTC by drook
**Last Updated:** Tue Oct 01, 2013 08:18 AM UTC
**Owner:** Daniel Stenberg
curl is unable to load non-default openssl engines, because openssl isn't initialized properly - curl ignores the openssl configutration file. for example curl cannot load ccgost engine, provided since 1.0.0:
    # /usr/local/openssl/bin/openssl engine
    (rsax) RSAX engine support
    (rdrand) Intel RDRAND engine
    (dynamic) Dynamic engine loading support
    (gost) Reference implementation of GOST engine
    # ldd /usr/local/curl/bin/curl
        linux-vdso.so.1 =>  (0x00007fff0c9ff000)
        libcurl.so.4 => /usr/local/curl/lib/libcurl.so.4 (0x00007fb5f1f17000)
        libz.so.1 => /usr/lib/libz.so.1 (0x00007fb5f1d00000)
        librt.so.1 => /lib/librt.so.1 (0x00007fb5f1af7000)
        libc.so.6 => /lib/libc.so.6 (0x00007fb5f1795000)
        libssl.so.1.0.0 => /usr/local/openssl/lib/libssl.so.1.0.0 (0x00007fb5f152c000)
        libcrypto.so.1.0.0 => /usr/local/openssl/lib/libcrypto.so.1.0.0 (0x00007fb5f1151000)
        libpthread.so.0 => /lib/libpthread.so.0 (0x00007fb5f0f35000)
        /lib64/ld-linux-x86-64.so.2 (0x00007fb5f2178000)
        libdl.so.2 => /lib/libdl.so.2 (0x00007fb5f0d31000)
    # /usr/local/curl/bin//curl --engine list
    Build-time engines:
      rsax
      rdrand
      dynamic
"It is strongly recommended that all new applications call OPENSSL_config() or the more sophisticated functions such as CONF_modules_load() during initialization (that is before starting any threads). By doing this an application does not need to keep track of all configuration options and some new functionality can be supported automatically." - curl totally ignores this openssl note.
The patch provided fixes the issue.
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