[tor-bugs] #16223 [Torsocks]: Torsocks v2.1.0 fails to build on RHEL/CentOS 5.x

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#16223: Torsocks v2.1.0 fails to build on RHEL/CentOS 5.x
-------------------------+-------------------------
 Reporter:  tmpname0901  |          Owner:  dgoulet
     Type:  defect       |         Status:  new
 Priority:  normal       |      Milestone:
Component:  Torsocks     |        Version:
 Keywords:               |  Actual Points:
Parent ID:               |         Points:
-------------------------+-------------------------
 The newly-released torsocks v2.1.0 does not build in RHEL/CentOS v5.11
 (all updates applied.)

 This is the first error:

  In file included from ref.h:23,
                  from connection.h:28,
                  from defaults.h:21,
                  from log.c:27:
 compat.h:133:25: error: sys/eventfd.h: No such file or directory
 make[2]: *** [log.lo] Error 1

 This is due to the fact that eventfd.h really does not exist on this
 system.  If I change the include from sys/eventfd.h to sys/syscall.h the
 compile finishes without error, but then the link fails:

 ../../src/lib/.libs/libtorsocks.so: undefined reference to `eventfd'
 ../../src/lib/.libs/libtorsocks.so: undefined reference to `inotify_init1'
 ../../src/lib/.libs/libtorsocks.so: undefined reference to `epoll_create1'
 ../../src/lib/.libs/libtorsocks.so: undefined reference to `epoll_pwait'
 collect2: ld returned 1 exit status

 No problems seen when building on a CentOS6 system, just on CentOS5.

 The prior v2.0.0 does build on CentOS5 with the help of some function
 attribute trickery (prepending ATTR_HIDDEN to several function and data
 definitions).

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/16223>
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