[tor-bugs] #17984 [Tor]: Tor fails to build with latest OpenSSL master

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#17984: Tor fails to build with latest OpenSSL master
------------------------+--------------------------------
     Reporter:  rl1987  |      Owner:
         Type:  defect  |     Status:  new
     Priority:  Medium  |  Milestone:  Tor: 0.2.8.x-final
    Component:  Tor     |    Version:  Tor: unspecified
     Severity:  Normal  |   Keywords:  openssl build
Actual Points:          |  Parent ID:
       Points:          |    Sponsor:
------------------------+--------------------------------
 I'm running Mac OS X 10.11.2 and installed the latest OpenSSL from their
 master branch (1de1d7689a81f2a3ed3348926e6a31ef79a2bc15). Current Tor
 master (cdbb04be102969bd2cece9daf42896e061cc8880) fails to build with the
 following warnings:

 {{{
 src/common/crypto.c:376:26: warning: implicit declaration of function
       'ENGINE_get_default_ECDH' is invalid in C99
       [-Wimplicit-function-declaration]
       log_engine("ECDH", ENGINE_get_default_ECDH());
                          ^
 src/common/crypto.c:376:26: warning: incompatible integer to pointer
 conversion
       passing 'int' to parameter of type 'ENGINE *' (aka 'struct engine_st
 *')
       [-Wint-conversion]
       log_engine("ECDH", ENGINE_get_default_ECDH());
                          ^~~~~~~~~~~~~~~~~~~~~~~~~
 src/common/crypto.c:173:36: note: passing argument to parameter 'e' here
 log_engine(const char *fn, ENGINE *e)
                                    ^
 src/common/crypto.c:377:27: warning: implicit declaration of function
       'ENGINE_get_default_ECDSA' is invalid in C99
       [-Wimplicit-function-declaration]
       log_engine("ECDSA", ENGINE_get_default_ECDSA());
                           ^
 src/common/crypto.c:377:27: warning: incompatible integer to pointer
 conversion
       passing 'int' to parameter of type 'ENGINE *' (aka 'struct engine_st
 *')
       [-Wint-conversion]
       log_engine("ECDSA", ENGINE_get_default_ECDSA());
                           ^~~~~~~~~~~~~~~~~~~~~~~~~~
 src/common/crypto.c:173:36: note: passing argument to parameter 'e' here
 log_engine(const char *fn, ENGINE *e)
                                    ^
 4 warnings generated.
 }}}

 and following error messages:

 {{{
 Undefined symbols for architecture x86_64:
   "_ENGINE_get_default_ECDH", referenced from:
       _crypto_global_init in libor-crypto.a(crypto.o)
   "_ENGINE_get_default_ECDSA", referenced from:
       _crypto_global_init in libor-crypto.a(crypto.o)
 ld: symbol(s) not found for architecture x86_64
 clang: error: linker command failed with exit code 1 (use -v to see
 invocation)
 make[1]: *** [src/or/tor] Error 1
 make: *** [all] Error 2
 }}}

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/17984>
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