[tor-bugs] #18626 [Tor]: Cannot compile Tor for 64-bit architectures with Xcode 7.3

["Tor Bug Tracker & Wiki" <blackhole@xxxxxxxxxxxxxx>]

#18626: Cannot compile Tor for 64-bit architectures with Xcode 7.3
--------------------------------+-----------------
     Reporter:  chrisballinger  |      Owner:
         Type:  defect          |     Status:  new
     Priority:  Medium          |  Milestone:
    Component:  Tor             |    Version:
     Severity:  Normal          |   Keywords:
Actual Points:                  |  Parent ID:
       Points:                  |   Reviewer:
      Sponsor:                  |
--------------------------------+-----------------
 Not sure exactly why this appeared after the release of Xcode 7.3, but we
 are no longer able to finish the configure phase due to a missing stdlib.h
 include in the conftests for OpenSSL and zlib.

 For example:

 {{{
 conftest.c:69:25: error: implicitly declaring library function 'exit' with
 type 'void (int) __attribute__((noreturn))' [-Werror,-Wimplicit-function-
 declaration]
 RAND_add((void*)0,0,0); exit(0);
                         ^
 conftest.c:69:25: note: include the header <stdlib.h> or explicitly
 provide a declaration for 'exit'

 | void RAND_add(const void *buf, int num, double entropy);
 | int
 | main ()
 | {
 | RAND_add((void*)0,0,0); exit(0);
 |   ;
 |   return 0;
 | }
 }}}

 When I edited configure.ac to add the include for both OpenSSL and zlib
 and re-ran autoconf, I was able to make the tests pass and finish
 configure.

 {{{
 TOR_SEARCH_LIBRARY(openssl, $tryssldir, [-lssl -lcrypto $TOR_LIB_GDI],
     [#include <openssl/rand.h>],
     [#include <stdlib.h>],
     [void RAND_add(const void *buf, int num, double entropy);],
     [RAND_add((void*)0,0,0); exit(0);], [],
     [/usr/local/openssl /usr/lib/openssl /usr/local/ssl /usr/lib/ssl
 /usr/local /usr/athena /opt/openssl])

 TOR_SEARCH_LIBRARY(zlib, $tryzlibdir, [-lz],
     [#include <zlib.h>],
     [#include <stdlib.h>],
     [const char * zlibVersion(void);],
     [zlibVersion(); exit(0);], [--with-zlib-dir],
     [/opt/zlib])
 }}}

 We are also tracking this issue on GitHub here:
 https://github.com/ursachec/CPAProxy/issues/40

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/18626>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
_______________________________________________
tor-bugs mailing list
tor-bugs@xxxxxxxxxxxxxxxxxxxx
https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-bugs