telnet localhost 1234
Trying ::1...
Connected to localhost.
Escape character is '^]'.
Connection closed by foreign host.

NIO4r_PURE=true ruby examples/echo_server.rb
Listening on localhost:1234
*** ::1:61932 connected
<internal:prelude>:8:in `lock': deadlock; recursive locking (ThreadError)
    from <internal:prelude>:8:in `synchronize'
    from /Users/johnnyt/code/celluloid/nio4r/lib/nio/selector.rb:22:in `register'
    from examples/echo_server.rb:29:in `accept'
    from examples/echo_server.rb:15:in `block in initialize'
    from examples/echo_server.rb:20:in `call'
    from examples/echo_server.rb:20:in `block in run'
    from /Users/johnnyt/code/celluloid/nio4r/lib/nio/selector.rb:94:in `block (2 levels) in select'
    from /Users/johnnyt/.rbenv/versions/1.9.3-p125/lib/ruby/1.9.1/set.rb:222:in `block in each'
    from /Users/johnnyt/.rbenv/versions/1.9.3-p125/lib/ruby/1.9.1/set.rb:222:in `each_key'
    from /Users/johnnyt/.rbenv/versions/1.9.3-p125/lib/ruby/1.9.1/set.rb:222:in `each'
    from /Users/johnnyt/code/celluloid/nio4r/lib/nio/selector.rb:93:in `block in select'
    from <internal:prelude>:10:in `synchronize'
    from /Users/johnnyt/code/celluloid/nio4r/lib/nio/selector.rb:54:in `select'
    from examples/echo_server.rb:20:in `run'
    from examples/echo_server.rb:46:in `<main>'

Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/usr/include/c++/4.2.1
Apple LLVM version 5.1 (clang-503.0.38) (based on LLVM 3.4svn)
Target: x86_64-apple-darwin13.1.0
Thread model: posix

ruby 2.0.0p247 (2013-06-27 revision 41674) [universal.x86_64-darwin13]

ProductName:    Mac OS X
ProductVersion: 10.9.2
BuildVersion:   13C64

Building native extensions.  This could take a while...
ERROR:  Error installing nio4r:
    ERROR: Failed to build gem native extension.

    /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby extconf.rb
checking for rb_thread_blocking_region()... yes
checking for sys/select.h... yes
checking for poll.h... yes
checking for sys/epoll.h... no
checking for sys/event.h... yes
checking for sys/queue.h... yes
checking for port.h... no
checking for sys/resource.h... yes
creating Makefile

make "DESTDIR=" clean

make "DESTDIR="
compiling monitor.c
In file included from monitor.c:6:
In file included from ./nio4r.h:10:
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0/ruby/backward/rubyio.h:2:2: warning: use "ruby/io.h" instead of "rubyio.h" [-W#warnings]
#warning use "ruby/io.h" instead of "rubyio.h"
 ^
1 warning generated.
compiling nio4r_ext.c
In file included from nio4r_ext.c:6:
In file included from ./nio4r.h:10:
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0/ruby/backward/rubyio.h:2:2: warning: use "ruby/io.h" instead of "rubyio.h" [-W#warnings]
#warning use "ruby/io.h" instead of "rubyio.h"
 ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:481:48: warning: '/*' within block comment [-Wcomment]
/*#define MIN_INTERVAL  0.00000095367431640625 /* 1/2**20, good till 2200 */
                                               ^
./../libev/ev.c:1535:31: warning: 'extern' variable has an initializer [-Wextern-initializer]
  EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
                              ^
In file included from nio4r_ext.c:7:
In file included from ./../libev/ev.c:2400:
./../libev/ev_poll.c:110:18: warning: expression result unused [-Wunused-value]
        assert (("libev: poll() returned illegal result, broken BSD kernel?", p < polls + pollcnt));
                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2806:12: warning: expression result unused [-Wunused-value]
  assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2809:14: warning: expression result unused [-Wunused-value]
    assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2819:16: warning: expression result unused [-Wunused-value]
      assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2820:16: warning: expression result unused [-Wunused-value]
      assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2821:16: warning: expression result unused [-Wunused-value]
      assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2832:16: warning: expression result unused [-Wunused-value]
      assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2850:14: warning: expression result unused [-Wunused-value]
    assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2863:24: warning: expression result unused [-Wunused-value]
              assert (("libev: io watcher list contains a loop", w != w2));
                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2867:20: warning: expression result unused [-Wunused-value]
          assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2868:20: warning: expression result unused [-Wunused-value]
          assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3050:24: warning: expression result unused [-Wunused-value]
              assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3112:24: warning: expression result unused [-Wunused-value]
              assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3257:1: warning: control reaches end of non-void function [-Wreturn-type]
}
^
./../libev/ev.c:3274:12: warning: expression result unused [-Wunused-value]
  assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3446:22: warning: expression result unused [-Wunused-value]
            assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3620:12: warning: expression result unused [-Wunused-value]
  assert (("libev: ev_io_start called with negative fd", fd >= 0));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3621:12: warning: expression result unused [-Wunused-value]
  assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3630:12: warning: expression result unused [-Wunused-value]
  assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3632:34: warning: '&' within '|' [-Wbitwise-op-parentheses]
  fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
                       ~~~~~~~~~~^~~~~~~~~~~~~ ~
./../libev/ev.c:3632:34: note: place parentheses around the '&' expression to silence this warning
  fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
                                 ^
                       (                      )
./../libev/ev.c:3645:12: warning: expression result unused [-Wunused-value]
  assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3665:12: warning: expression result unused [-Wunused-value]
  assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3693:14: warning: expression result unused [-Wunused-value]
    assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3755:16: warning: expression result unused [-Wunused-value]
      assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3787:14: warning: expression result unused [-Wunused-value]
    assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3824:12: warning: expression result unused [-Wunused-value]
  assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3827:12: warning: expression result unused [-Wunused-value]
  assert (("libev: a signal must not be attached to two different loops",
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3945:12: warning: expression result unused [-Wunused-value]
  assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:4524:14: warning: expression result unused [-Wunused-value]
    assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
32 warnings generated.
compiling selector.c
In file included from selector.c:6:
In file included from ./nio4r.h:10:
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0/ruby/backward/rubyio.h:2:2: warning: use "ruby/io.h" instead of "rubyio.h" [-W#warnings]
#warning use "ruby/io.h" instead of "rubyio.h"
 ^
In file included from selector.c:7:
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0/ruby/backward/rubysig.h:14:2: warning: rubysig.h is obsolete [-W#warnings]
#warning rubysig.h is obsolete
 ^
selector.c:391:43: warning: incompatible pointer types passing 'VALUE (VALUE)' to parameter of type 'VALUE (*)(VALUE *)' [-Wincompatible-pointer-types]
    return NIO_Selector_synchronize(self, NIO_Selector_close_synchronized, self);
                                          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
selector.c:157:59: note: passing argument to parameter 'func' here
static VALUE NIO_Selector_synchronize(VALUE self, VALUE (*func)(VALUE *args), VALUE *args)
                                                          ^
selector.c:391:76: warning: incompatible integer to pointer conversion passing 'VALUE' (aka 'unsigned long') to parameter of type 'VALUE *' (aka 'unsigned long *'); take the address with & [-Wint-conversion]
    return NIO_Selector_synchronize(self, NIO_Selector_close_synchronized, self);
                                                                           ^~~~
                                                                           &
selector.c:157:86: note: passing argument to parameter 'args' here
static VALUE NIO_Selector_synchronize(VALUE self, VALUE (*func)(VALUE *args), VALUE *args)
                                                                                     ^
selector.c:407:43: warning: incompatible pointer types passing 'VALUE (VALUE)' to parameter of type 'VALUE (*)(VALUE *)' [-Wincompatible-pointer-types]
    return NIO_Selector_synchronize(self, NIO_Selector_closed_synchronized, self);
                                          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
selector.c:157:59: note: passing argument to parameter 'func' here
static VALUE NIO_Selector_synchronize(VALUE self, VALUE (*func)(VALUE *args), VALUE *args)
                                                          ^
selector.c:407:77: warning: incompatible integer to pointer conversion passing 'VALUE' (aka 'unsigned long') to parameter of type 'VALUE *' (aka 'unsigned long *'); take the address with & [-Wint-conversion]
    return NIO_Selector_synchronize(self, NIO_Selector_closed_synchronized, self);
                                                                            ^~~~
                                                                            &
selector.c:157:86: note: passing argument to parameter 'args' here
static VALUE NIO_Selector_synchronize(VALUE self, VALUE (*func)(VALUE *args), VALUE *args)
                                                                                     ^
6 warnings generated.
linking shared-object nio4r_ext.bundle
clang: error: unknown argument: '-multiply_definedsuppress' [-Wunused-command-line-argument-hard-error-in-future]
clang: note: this will be a hard error (cannot be downgraded to a warning) in the future
make: *** [nio4r_ext.bundle] Error 1

make failed, exit code 2

Gem files will remain installed in /Library/Ruby/Gems/2.0.0/gems/nio4r-1.0.0 for inspection.
Results logged to /Library/Ruby/Gems/2.0.0/extensions/universal-darwin-13/2.0.0/nio4r-1.0.0/gem_make.out

    def wakeup
      # Send the selector a signal in the form of writing data to a pipe
      @waker.write "\0"
      nil
    end

Starting server...
E, [2013-03-06T22:42:59.152000 #8039] ERROR -- : MyServer crashed!
IOError: closed stream
    org/nio4r/Nio4r.java:143:in `register'
    /home/me/.rvm/gems/jruby-1.7.2/gems/celluloid-io-0.13.0.pre/lib/celluloid/io/reactor.rb:42:in `wait'
    /home/me/.rvm/gems/jruby-1.7.2/gems/celluloid-io-0.13.0.pre/lib/celluloid/io/reactor.rb:21:in `wait_readable'
    org/jruby/RubyBasicObject.java:1665:in `__send__'
    org/jruby/RubyKernel.java:1809:in `public_send'
    /home/me/.rvm/gems/jruby-1.7.2/gems/celluloid-0.13.0.pre/lib/celluloid/calls.rb:11:in `dispatch'
    /home/me/.rvm/gems/jruby-1.7.2/gems/celluloid-0.13.0.pre/lib/celluloid/calls.rb:60:in `dispatch'
    /home/me/.rvm/gems/jruby-1.7.2/gems/celluloid-0.13.0.pre/lib/celluloid/actor.rb:328:in `handle_message'
    /home/me/.rvm/gems/jruby-1.7.2/gems/celluloid-0.13.0.pre/lib/celluloid/tasks/task_fiber.rb:28:in `initialize'
    /home/me/.rvm/gems/jruby-1.7.2/gems/celluloid-0.13.0.pre/lib/celluloid/tasks/task_fiber.rb:27:in `initialize'
D, [2013-03-06T22:42:59.225000 #8039] DEBUG -- : Terminating 146 actors...
D, [2013-03-06T22:42:59.457000 #8039] DEBUG -- : Shutdown completed cleanly

    /Applications/Vagrant/embedded/bin/ruby extconf.rb

/opt/chefdk/embedded/bin/ruby extconf.rb 
checking for rb_thread_blocking_region()... *** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
libraries and/or headers.  Check the mkmf.log file for more details.  You may
need configuration options.

Provided configuration options:
    --with-opt-dir
    --with-opt-include
    --without-opt-include=${opt-dir}/include
    --with-opt-lib
    --without-opt-lib=${opt-dir}/lib
    --with-make-prog
    --without-make-prog
    --srcdir=.
    --curdir
    --ruby=/opt/chefdk/embedded/bin/ruby
/opt/chefdk/embedded/lib/ruby/2.1.0/mkmf.rb:456:in `try_do': The compiler failed to generate an executable file. (RuntimeError)
You have to install development tools first.
    from /opt/chefdk/embedded/lib/ruby/2.1.0/mkmf.rb:541:in `try_link0'
    from /opt/chefdk/embedded/lib/ruby/2.1.0/mkmf.rb:556:in `try_link'
    from /opt/chefdk/embedded/lib/ruby/2.1.0/mkmf.rb:742:in `try_func'
    from /opt/chefdk/embedded/lib/ruby/2.1.0/mkmf.rb:1027:in `block in have_func'
    from /opt/chefdk/embedded/lib/ruby/2.1.0/mkmf.rb:918:in `block in checking_for'
    from /opt/chefdk/embedded/lib/ruby/2.1.0/mkmf.rb:351:in `block (2 levels) in postpone'
    from /opt/chefdk/embedded/lib/ruby/2.1.0/mkmf.rb:321:in `open'
    from /opt/chefdk/embedded/lib/ruby/2.1.0/mkmf.rb:351:in `block in postpone'
    from /opt/chefdk/embedded/lib/ruby/2.1.0/mkmf.rb:321:in `open'
    from /opt/chefdk/embedded/lib/ruby/2.1.0/mkmf.rb:347:in `postpone'
    from /opt/chefdk/embedded/lib/ruby/2.1.0/mkmf.rb:917:in `checking_for'
    from /opt/chefdk/embedded/lib/ruby/2.1.0/mkmf.rb:1026:in `have_func'
    from extconf.rb:3:in `<main>'

extconf failed, exit code 1

sysname: Linux
release: 3.18.6-1-ARCH
version: #1 SMP PREEMPT Sat Feb 7 08:44:05 CET 2015
machine: x86_64

ruby() [0x6b5cf9]
/usr/lib/libpthread.so.0(+0x10740) [0x7ff632abf740]
/usr/lib/libc.so.6(fileno_unlocked+0) [0x7ff6318cdc40]
/home/asp/.rvm/gems/rbx-2.5.2/gems/nio4r-1.1.0/lib/nio4r_ext.so(+0xa32c) [0x7ff63144b32c]
ruby(_ZN8rubinius12NativeMethod23executor_implementationINS_14ThreeArgumentsEEEPNS_6ObjectEPNS_5StateEPNS_9CallFrameEPNS_10ExecutableEPNS_6ModuleERNS_9ArgumentsE+0x419) [0x71e6f9]
ruby(_ZN8rubinius11MachineCode11interpreterEPNS_5StateEPS0_PNS_20InterpreterCallFrameE+0x2aed) [0x5fc7cd]
ruby(_ZN8rubinius11MachineCode19execute_specializedINS_17SplatOnlyArgumentEEEPNS_6ObjectEPNS_5StateEPNS_9CallFrameEPNS_10ExecutableEPNS_6ModuleERNS_9ArgumentsE+0x277) [0x64a737]
ruby(_ZN8rubinius8Dispatch4sendEPNS_5StateEPNS_9CallFrameERNS_10LookupDataERNS_9ArgumentsENS_19MethodMissingReasonE+0x6c) [0x5dbb5c]

Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

    /usr/bin/ruby -r ./siteconf20150311-18836-jlnd0q.rb extconf.rb
checking for rb_thread_blocking_region()... no
checking for sys/select.h... yes
checking for poll.h... yes
checking for sys/epoll.h... yes
checking for sys/event.h... no
checking for port.h... no
checking for sys/resource.h... yes
creating Makefile

make "DESTDIR=" clean

make "DESTDIR="
compiling selector.c
In file included from nio4r.h:10:0,
                 from selector.c:6:
/usr/include/ruby-2.2.0/ruby/backward/rubyio.h:2:2: warning: #warning use "ruby/io.h" instead of "rubyio.h" [-Wcpp]
 #warning use "ruby/io.h" instead of "rubyio.h"
  ^
In file included from selector.c:7:0:
/usr/include/ruby-2.2.0/ruby/backward/rubysig.h:14:2: warning: #warning rubysig.h is obsolete [-Wcpp]
 #warning rubysig.h is obsolete
  ^
selector.c: In function ‘NIO_Selector_run’:
selector.c:341:9: error: ‘TRAP_BEG’ undeclared (first use in this function)
         TRAP_BEG;
         ^
selector.c:341:9: note: each undeclared identifier is reported only once for each function it appears in
selector.c:343:9: error: ‘TRAP_END’ undeclared (first use in this function)
         TRAP_END;
         ^
selector.c: In function ‘NIO_Selector_close’:
selector.c:391:43: warning: passing argument 2 of ‘NIO_Selector_synchronize’ from incompatible pointer type
     return NIO_Selector_synchronize(self, NIO_Selector_close_synchronized, self);
                                           ^
selector.c:157:14: note: expected ‘VALUE (*)(VALUE *)’ but argument is of type ‘VALUE (*)(VALUE)’
 static VALUE NIO_Selector_synchronize(VALUE self, VALUE (*func)(VALUE *args), VALUE *args)
              ^
selector.c:391:76: warning: passing argument 3 of ‘NIO_Selector_synchronize’ makes pointer from integer without a cast
     return NIO_Selector_synchronize(self, NIO_Selector_close_synchronized, self);
                                                                            ^
selector.c:157:14: note: expected ‘VALUE *’ but argument is of type ‘VALUE’
 static VALUE NIO_Selector_synchronize(VALUE self, VALUE (*func)(VALUE *args), VALUE *args)
              ^
selector.c: In function ‘NIO_Selector_closed’:
selector.c:407:43: warning: passing argument 2 of ‘NIO_Selector_synchronize’ from incompatible pointer type
     return NIO_Selector_synchronize(self, NIO_Selector_closed_synchronized, self);
                                           ^
selector.c:157:14: note: expected ‘VALUE (*)(VALUE *)’ but argument is of type ‘VALUE (*)(VALUE)’
 static VALUE NIO_Selector_synchronize(VALUE self, VALUE (*func)(VALUE *args), VALUE *args)
              ^
selector.c:407:77: warning: passing argument 3 of ‘NIO_Selector_synchronize’ makes pointer from integer without a cast
     return NIO_Selector_synchronize(self, NIO_Selector_closed_synchronized, self);
                                                                             ^
selector.c:157:14: note: expected ‘VALUE *’ but argument is of type ‘VALUE’
 static VALUE NIO_Selector_synchronize(VALUE self, VALUE (*func)(VALUE *args), VALUE *args)
              ^
selector.c: In function ‘NIO_Selector_wakeup’:
selector.c:384:5: warning: ignoring return value of ‘write’, declared with attribute warn_unused_result [-Wunused-result]
     write(selector->wakeup_writer, "\0", 1);
     ^
Makefile:237: recipe for target 'selector.o' failed
make: *** [selector.o] Error 1

make failed, exit code 2

C:/Ruby/Ruby200/bin/ruby.exe extconf.rb

./../libev/ev.c:1033:42: error: '_Noreturn' keyword must precede function declarator

/usr/local/opt/rbenv/versions/2.2.2/bin/ruby -r ./siteconf20150714-44665-18sflk9.rb extconf.rb
checking for rb_thread_blocking_region()... no
checking for rb_thread_call_without_gvl()... yes
checking for sys/select.h... yes
checking for poll.h... yes
checking for sys/epoll.h... no
checking for sys/event.h... yes
checking for sys/queue.h... yes
checking for port.h... no
checking for sys/resource.h... yes
creating Makefile

make "DESTDIR=" clean

make "DESTDIR="
compiling monitor.c
compiling nio4r_ext.c
In file included from nio4r_ext.c:7:
./../libev/ev.c:487:48: warning: '/*' within block comment [-Wcomment]
/*#define MIN_INTERVAL  0.00000095367431640625 /* 1/2**20, good till 2200 */
                                               ^
./../libev/ev.c:1033:42: error: '_Noreturn' keyword must precede function declarator
  ecb_inline void ecb_unreachable (void) ecb_noreturn;
                                         ^~~~~~~~~~~~
  _Noreturn 
./../libev/ev.c:836:26: note: expanded from macro 'ecb_noreturn'
  #define ecb_noreturn   _Noreturn
                         ^
./../libev/ev.c:1629:31: warning: 'extern' variable has an initializer [-Wextern-initializer]
  EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
                              ^
In file included from nio4r_ext.c:7:
In file included from ./../libev/ev.c:2494:
./../libev/ev_poll.c:110:18: warning: expression result unused [-Wunused-value]
        assert (("libev: poll() returned illegal result, broken BSD kernel?", p < polls + pollcnt));
                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2900:12: warning: expression result unused [-Wunused-value]
  assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2903:14: warning: expression result unused [-Wunused-value]
    assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2913:16: warning: expression result unused [-Wunused-value]
      assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2914:16: warning: expression result unused [-Wunused-value]
      assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2915:16: warning: expression result unused [-Wunused-value]
      assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2926:16: warning: expression result unused [-Wunused-value]
      assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2944:14: warning: expression result unused [-Wunused-value]
    assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2957:24: warning: expression result unused [-Wunused-value]
              assert (("libev: io watcher list contains a loop", w != w2));
                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2961:20: warning: expression result unused [-Wunused-value]
          assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2962:20: warning: expression result unused [-Wunused-value]
          assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3144:24: warning: expression result unused [-Wunused-value]
              assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3206:24: warning: expression result unused [-Wunused-value]
              assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3368:12: warning: expression result unused [-Wunused-value]
  assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3539:9: warning: implicit declaration of function 'rb_thread_call_without_gvl' is invalid in C99 [-Wimplicit-function-declaration]
        rb_thread_call_without_gvl(ev_backend_poll, (void *)&poll_args, RUBY_UBF_IO, 0);
        ^
./../libev/ev.c:3554:22: warning: expression result unused [-Wunused-value]
            assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3728:12: warning: expression result unused [-Wunused-value]
  assert (("libev: ev_io_start called with negative fd", fd >= 0));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3729:12: warning: expression result unused [-Wunused-value]
  assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3738:12: warning: expression result unused [-Wunused-value]
  assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3740:34: warning: '&' within '|' [-Wbitwise-op-parentheses]
  fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
                       ~~~~~~~~~~^~~~~~~~~~~~~ ~
./../libev/ev.c:3740:34: note: place parentheses around the '&' expression to silence this warning
  fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
                                 ^
                       (                      )
./../libev/ev.c:3753:12: warning: expression result unused [-Wunused-value]
  assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3773:12: warning: expression result unused [-Wunused-value]
  assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3801:14: warning: expression result unused [-Wunused-value]
    assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3863:16: warning: expression result unused [-Wunused-value]
      assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3895:14: warning: expression result unused [-Wunused-value]
    assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3932:12: warning: expression result unused [-Wunused-value]
  assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3935:12: warning: expression result unused [-Wunused-value]
  assert (("libev: a signal must not be attached to two different loops",
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:4053:12: warning: expression result unused [-Wunused-value]
  assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:4632:14: warning: expression result unused [-Wunused-value]
    assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
31 warnings and 1 error generated.
make: *** [nio4r_ext.o] Error 1

make failed, exit code 2

Temporarily enhancing PATH to include DevKit...
Building native extensions.  This could take a while...
ERROR:  Error installing rails:
        ERROR: Failed to build gem native extension.

    C:/Lavoro/Ruby/ruby-224x64/bin/ruby.exe -r ./siteconf20160409-96-m7y7ff.rb extconf.rb
checking for unistd.h... yes
checking for rb_thread_blocking_region()... no
checking for rb_thread_call_without_gvl()... yes
checking for sys/select.h... no
checking for poll.h... no
checking for sys/epoll.h... no
checking for sys/event.h... no
checking for port.h... no
checking for sys/resource.h... no
creating Makefile

make "DESTDIR=" clean

make "DESTDIR="

make failed, uncaught signal 11

Gem files will remain installed in C:/Lavoro/Ruby/ruby-224x64/lib/ruby/gems/2.2.0/gems/nio4r-1.2.1 for inspection.
Results logged to C:/Lavoro/Ruby/ruby-224x64/lib/ruby/gems/2.2.0/extensions/x64-mingw32/2.2.0/nio4r-1.2.1/gem_make.out

sudo gem install nio4r
Password:
Building native extensions.  This could take a while...
ERROR:  Error installing nio4r:
    ERROR: Failed to build gem native extension.

    /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby extconf.rb
checking for rb_thread_blocking_region()... yes
checking for sys/select.h... yes
checking for poll.h... yes
checking for sys/epoll.h... no
checking for sys/event.h... yes
checking for sys/queue.h... yes
checking for port.h... no
checking for sys/resource.h... yes
creating Makefile

make "DESTDIR=" clean

make "DESTDIR="
compiling monitor.c
In file included from monitor.c:6:
In file included from ./nio4r.h:10:
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0/ruby/backward/rubyio.h:2:2: warning: use "ruby/io.h" instead of "rubyio.h" [-W#warnings]
#warning use "ruby/io.h" instead of "rubyio.h"
 ^
1 warning generated.
compiling nio4r_ext.c
In file included from nio4r_ext.c:6:
In file included from ./nio4r.h:10:
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0/ruby/backward/rubyio.h:2:2: warning: use "ruby/io.h" instead of "rubyio.h" [-W#warnings]
#warning use "ruby/io.h" instead of "rubyio.h"
 ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:481:48: warning: '/*' within block comment [-Wcomment]
/*#define MIN_INTERVAL  0.00000095367431640625 /* 1/2**20, good till 2200 */
                                               ^
./../libev/ev.c:1535:31: warning: 'extern' variable has an initializer [-Wextern-initializer]
  EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
                              ^
In file included from nio4r_ext.c:7:
In file included from ./../libev/ev.c:2400:
./../libev/ev_poll.c:110:18: warning: expression result unused [-Wunused-value]
        assert (("libev: poll() returned illegal result, broken BSD kernel?", p < polls + pollcnt));
                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2806:12: warning: expression result unused [-Wunused-value]
  assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2809:14: warning: expression result unused [-Wunused-value]
    assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2819:16: warning: expression result unused [-Wunused-value]
      assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2820:16: warning: expression result unused [-Wunused-value]
      assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2821:16: warning: expression result unused [-Wunused-value]
      assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2832:16: warning: expression result unused [-Wunused-value]
      assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2850:14: warning: expression result unused [-Wunused-value]
    assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2863:24: warning: expression result unused [-Wunused-value]
              assert (("libev: io watcher list contains a loop", w != w2));
                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2867:20: warning: expression result unused [-Wunused-value]
          assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2868:20: warning: expression result unused [-Wunused-value]
          assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3050:24: warning: expression result unused [-Wunused-value]
              assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3112:24: warning: expression result unused [-Wunused-value]
              assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3257:1: warning: control reaches end of non-void function [-Wreturn-type]
}
^
./../libev/ev.c:3274:12: warning: expression result unused [-Wunused-value]
  assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3446:22: warning: expression result unused [-Wunused-value]
            assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3620:12: warning: expression result unused [-Wunused-value]
  assert (("libev: ev_io_start called with negative fd", fd >= 0));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3621:12: warning: expression result unused [-Wunused-value]
  assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3630:12: warning: expression result unused [-Wunused-value]
  assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3632:34: warning: '&' within '|' [-Wbitwise-op-parentheses]
  fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
                       ~~~~~~~~~~^~~~~~~~~~~~~ ~
./../libev/ev.c:3632:34: note: place parentheses around the '&' expression to silence this warning
  fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
                                 ^
                       (                      )
./../libev/ev.c:3645:12: warning: expression result unused [-Wunused-value]
  assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3665:12: warning: expression result unused [-Wunused-value]
  assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3693:14: warning: expression result unused [-Wunused-value]
    assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3755:16: warning: expression result unused [-Wunused-value]
      assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3787:14: warning: expression result unused [-Wunused-value]
    assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3824:12: warning: expression result unused [-Wunused-value]
  assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3827:12: warning: expression result unused [-Wunused-value]
  assert (("libev: a signal must not be attached to two different loops",
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3945:12: warning: expression result unused [-Wunused-value]
  assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:4524:14: warning: expression result unused [-Wunused-value]
    assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
32 warnings generated.
compiling selector.c
In file included from selector.c:6:
In file included from ./nio4r.h:10:
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0/ruby/backward/rubyio.h:2:2: warning: use "ruby/io.h" instead of "rubyio.h" [-W#warnings]
#warning use "ruby/io.h" instead of "rubyio.h"
 ^
In file included from selector.c:7:
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0/ruby/backward/rubysig.h:14:2: warning: rubysig.h is obsolete [-W#warnings]
#warning rubysig.h is obsolete
 ^
selector.c:391:43: warning: incompatible pointer types passing 'VALUE (VALUE)' to parameter of type 'VALUE (*)(VALUE *)' [-Wincompatible-pointer-types]
    return NIO_Selector_synchronize(self, NIO_Selector_close_synchronized, self);
                                          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
selector.c:157:59: note: passing argument to parameter 'func' here
static VALUE NIO_Selector_synchronize(VALUE self, VALUE (*func)(VALUE *args), VALUE *args)
                                                          ^
selector.c:391:76: warning: incompatible integer to pointer conversion passing 'VALUE' (aka 'unsigned long') to parameter of type 'VALUE *' (aka 'unsigned long *'); take the address with & [-Wint-conversion]
    return NIO_Selector_synchronize(self, NIO_Selector_close_synchronized, self);
                                                                           ^~~~
                                                                           &
selector.c:157:86: note: passing argument to parameter 'args' here
static VALUE NIO_Selector_synchronize(VALUE self, VALUE (*func)(VALUE *args), VALUE *args)
                                                                                     ^
selector.c:407:43: warning: incompatible pointer types passing 'VALUE (VALUE)' to parameter of type 'VALUE (*)(VALUE *)' [-Wincompatible-pointer-types]
    return NIO_Selector_synchronize(self, NIO_Selector_closed_synchronized, self);
                                          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
selector.c:157:59: note: passing argument to parameter 'func' here
static VALUE NIO_Selector_synchronize(VALUE self, VALUE (*func)(VALUE *args), VALUE *args)
                                                          ^
selector.c:407:77: warning: incompatible integer to pointer conversion passing 'VALUE' (aka 'unsigned long') to parameter of type 'VALUE *' (aka 'unsigned long *'); take the address with & [-Wint-conversion]
    return NIO_Selector_synchronize(self, NIO_Selector_closed_synchronized, self);
                                                                            ^~~~
                                                                            &
selector.c:157:86: note: passing argument to parameter 'args' here
static VALUE NIO_Selector_synchronize(VALUE self, VALUE (*func)(VALUE *args), VALUE *args)
                                                                                     ^
6 warnings generated.
linking shared-object nio4r_ext.bundle
clang: error: unknown argument: '-multiply_definedsuppress' [-Wunused-command-line-argument-hard-error-in-future]
clang: note: this will be a hard error (cannot be downgraded to a warning) in the future
make: *** [nio4r_ext.bundle] Error 1

make failed, exit code 2

Gem files will remain installed in /Library/Ruby/Gems/2.0.0/gems/nio4r-1.0.0 for inspection.
Results logged to /Library/Ruby/Gems/2.0.0/extensions/universal-darwin-13/2.0.0/nio4r-1.0.0/gem_make.out

Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

    /Users/omer.katz/.rvm/rubies/ruby-2.0.0-p247/bin/ruby -r ./siteconf20160411-83265-zn5369.rb extconf.rb
checking for rb_thread_blocking_region()... yes
checking for sys/select.h... yes
checking for poll.h... yes
checking for sys/epoll.h... no
checking for sys/event.h... yes
checking for sys/queue.h... yes
checking for port.h... no
checking for sys/resource.h... yes
creating Makefile

make "DESTDIR=" clean

make "DESTDIR="
compiling monitor.c
In file included from monitor.c:6:
In file included from ./nio4r.h:10:
/Users/omer.katz/.rvm/rubies/ruby-2.0.0-p247/include/ruby-2.0.0/ruby/backward/rubyio.h:2:2: warning: use "ruby/io.h" instead of "rubyio.h" [-W#warnings]
#warning use "ruby/io.h" instead of "rubyio.h"
 ^
1 warning generated.
compiling nio4r_ext.c
In file included from nio4r_ext.c:6:
In file included from ./nio4r.h:10:
/Users/omer.katz/.rvm/rubies/ruby-2.0.0-p247/include/ruby-2.0.0/ruby/backward/rubyio.h:2:2: warning: use "ruby/io.h" instead of "rubyio.h" [-W#warnings]
#warning use "ruby/io.h" instead of "rubyio.h"
 ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:481:48: warning: '/*' within block comment [-Wcomment]
/*#define MIN_INTERVAL  0.00000095367431640625 /* 1/2**20, good till 2200 */
                                               ^
./../libev/ev.c:974:42: error: '_Noreturn' keyword must precede function declarator
  ecb_inline void ecb_unreachable (void) ecb_noreturn;
                                         ^~~~~~~~~~~~
  _Noreturn
./../libev/ev.c:777:26: note: expanded from macro 'ecb_noreturn'
  #define ecb_noreturn   _Noreturn
                         ^
./../libev/ev.c:1535:31: warning: 'extern' variable has an initializer [-Wextern-initializer]
  EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
                              ^
In file included from nio4r_ext.c:7:
In file included from ./../libev/ev.c:2400:
./../libev/ev_poll.c:110:18: warning: expression result unused [-Wunused-value]
        assert (("libev: poll() returned illegal result, broken BSD kernel?", p < polls + pollcnt));
                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2806:12: warning: expression result unused [-Wunused-value]
  assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2809:14: warning: expression result unused [-Wunused-value]
    assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2819:16: warning: expression result unused [-Wunused-value]
      assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2820:16: warning: expression result unused [-Wunused-value]
      assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2821:16: warning: expression result unused [-Wunused-value]
      assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2832:16: warning: expression result unused [-Wunused-value]
      assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2850:14: warning: expression result unused [-Wunused-value]
    assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2863:24: warning: expression result unused [-Wunused-value]
              assert (("libev: io watcher list contains a loop", w != w2));
                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2867:20: warning: expression result unused [-Wunused-value]
          assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2868:20: warning: expression result unused [-Wunused-value]
          assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3050:24: warning: expression result unused [-Wunused-value]
              assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3112:24: warning: expression result unused [-Wunused-value]
              assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3274:12: warning: expression result unused [-Wunused-value]
  assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3431:9: warning: 'rb_thread_blocking_region' is deprecated [-Wdeprecated-declarations]
        rb_thread_blocking_region(ev_backend_poll, (void *)&poll_args, RUBY_UBF_IO, 0);
        ^
/Users/omer.katz/.rvm/rubies/ruby-2.0.0-p247/include/ruby-2.0.0/ruby/intern.h:839:18: note: 'rb_thread_blocking_region' has been explicitly marked deprecated here
DEPRECATED(VALUE rb_thread_blocking_region(rb_blocking_function_t *func, void *data1,
                 ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3446:22: warning: expression result unused [-Wunused-value]
            assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3620:12: warning: expression result unused [-Wunused-value]
  assert (("libev: ev_io_start called with negative fd", fd >= 0));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3621:12: warning: expression result unused [-Wunused-value]
  assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3630:12: warning: expression result unused [-Wunused-value]
  assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3632:34: warning: '&' within '|' [-Wbitwise-op-parentheses]
  fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
                       ~~~~~~~~~~^~~~~~~~~~~~~ ~
./../libev/ev.c:3632:34: note: place parentheses around the '&' expression to silence this warning
  fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
                                 ^
                       (                      )
./../libev/ev.c:3645:12: warning: expression result unused [-Wunused-value]
  assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3665:12: warning: expression result unused [-Wunused-value]
  assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3693:14: warning: expression result unused [-Wunused-value]
    assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3755:16: warning: expression result unused [-Wunused-value]
      assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3787:14: warning: expression result unused [-Wunused-value]
    assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3824:12: warning: expression result unused [-Wunused-value]
  assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3827:12: warning: expression result unused [-Wunused-value]
  assert (("libev: a signal must not be attached to two different loops",
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3945:12: warning: expression result unused [-Wunused-value]
  assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:4524:14: warning: expression result unused [-Wunused-value]
    assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
32 warnings and 1 error generated.
make: *** [nio4r_ext.o] Error 1

make failed, exit code 2

Gem files will remain installed in /Users/omer.katz/.rvm/gems/ruby-2.0.0-p247@tracking_service/gems/nio4r-1.0.0 for inspection.
Results logged to /Users/omer.katz/.rvm/gems/ruby-2.0.0-p247@tracking_service/extensions/x86_64-darwin-15/2.0.0/nio4r-1.0.0/gem_make.out

$ ruby -v
ruby 2.2.0p0 (2014-12-25 revision 49005) [x86_64-darwin14]

current directory: C:/RailsInstaller/Ruby2.2.0/lib/ruby/gems/2.2.0/gems/nio4r-1.2.1/ext/nio4r

current directory: /usr/local/lib/ruby/gems/2.3.0/gems/nio4r-1.2.1/ext/nio4r

                                                         ~ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

                                                         ~ ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~

c:\users\djberge\repositories\nio4r\ext\nio4r\../libev/ev.c(1156) : warning C4244: 'function' : conversion from 'int' to 'float', possible loss of data
c:\users\djberge\repositories\nio4r\ext\nio4r\../libev/ev.c(1157) : warning C4244: 'function' : conversion from 'int' to 'float', possible loss of data
c:\users\djberge\repositories\nio4r\ext\nio4r\../libev/ev.c(2266) : warning C4133: '=' : incompatible types - from 'WSABUF *' to 'CHAR *'
c:\users\djberge\repositories\nio4r\ext\libev\ev_select.c(200) : warning C4244: 'initializing' : conversion from 'ev_tstamp' to 'unsigned long', possible loss of data
c:\users\djberge\repositories\nio4r\ext\libev\ev.c(3351) : warning C4716: 'ev_backend_poll' : must return a value

dwilt:gjs-server dwilt$ gem install nio4r -v '1.2.1'
Building native extensions.  This could take a while...
ERROR:  Error installing nio4r:
    ERROR: Failed to build gem native extension.

    current directory: /Users/dwilt/.rvm/gems/ruby-2.3.0/gems/nio4r-1.2.1/ext/nio4r
/Users/dwilt/.rvm/rubies/ruby-2.3.0/bin/ruby -r ./siteconf20161005-83288-o77xp1.rb extconf.rb
mkmf.rb can't find header files for ruby at /Users/dwilt/.rvm/rubies/ruby-2.3.0/lib/ruby/include/ruby.h

extconf failed, exit code 1

Gem files will remain installed in /Users/dwilt/.rvm/gems/ruby-2.3.0/gems/nio4r-1.2.1 for inspection.
Results logged to /Users/dwilt/.rvm/gems/ruby-2.3.0/extensions/x86_64-darwin-15/2.3.0/nio4r-1.2.1/gem_make.out

ruby -v 
ruby 1.9.3p194 (2012-04-20 revision 35410) [x86_64-linux]

gem list --local

*** LOCAL GEMS ***
 [...]
celluloid (0.14.1)
celluloid-io (0.14.1)
celluloid-redis (0.0.2)
 [...]
nio4r (0.4.6)
 [...]
rubygems-bundler (1.2.0, 1.1.0)
rvm (1.11.3.8, 1.11.3.5)

2016-02-16T12:52:46.244000 [ERROR]: CLEANUP CRASHED!
Java::JavaLang::NullPointerException:
    org.jruby.util.io.OpenFile.channel(OpenFile.java:2245)
    org.jruby.RubyIO.getChannel(RubyIO.java:403)
    org.nio4r.Nio4r$Selector.deregister(Nio4r.java:188)
    org.nio4r.Nio4r$Selector$INVOKER$i$1$0$deregister.call(Nio4r$Selector$INVOKER$i$1$0$deregister.gen)
    org.jruby.RubyClass.finvoke(RubyClass.java:756)
    org.jruby.runtime.Helpers.invoke(Helpers.java:400)
    org.jruby.RubyBasicObject.callMethod(RubyBasicObject.java:376)
    org.nio4r.Nio4r$Monitor.close(Nio4r.java:462)
    org.nio4r.Nio4r$Monitor.close(Nio4r.java:453)
    org.nio4r.Nio4r$Monitor$INVOKER$i$close.call(Nio4r$Monitor$INVOKER$i$close.gen)
    org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:129)
    install.path.celluloid_minus_io_minus_0_dot_17_dot_3.lib.celluloid.io.reactor.invokeOther53:close(<install/path>/celluloid-io-0.17.3/lib/celluloid/io/reactor.rb)
    install.path.celluloid_minus_io_minus_0_dot_17_dot_3.lib.celluloid.io.reactor.RUBY$method$wait$0(<install/path>/celluloid-io-0.17.3/lib/celluloid/io/reactor.rb:52)
    org.jruby.internal.runtime.methods.CompiledIRMethod.call(CompiledIRMethod.java:146)
    org.jruby.internal.runtime.methods.MixedModeIRMethod.call(MixedModeIRMethod.java:216)
    org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:205)
    org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:193)
    install.path.celluloid_minus_io_minus_0_dot_17_dot_3.lib.celluloid.io.reactor.invokeOther3:wait(<install/path>/celluloid-io-0.17.3/lib/celluloid/io/reactor.rb)
    install.path.celluloid_minus_io_minus_0_dot_17_dot_3.lib.celluloid.io.reactor.RUBY$method$wait_readable$0(<install/path>/celluloid-io-0.17.3/lib/celluloid/io/reactor.rb:21)
    org.jruby.internal.runtime.methods.CompiledIRMethod.call(CompiledIRMethod.java:131)
    org.jruby.internal.runtime.methods.MixedModeIRMethod.call(MixedModeIRMethod.java:181)
    org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:197)
    org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:161)
    install.path.celluloid_minus_io_minus_0_dot_17_dot_3.lib.celluloid.io.invokeOther14:wait_readable(<install/path>/celluloid-io-0.17.3/lib/celluloid/io.rb)
    install.path.celluloid_minus_io_minus_0_dot_17_dot_3.lib.celluloid.io.RUBY$method$wait_readable$0(<install/path>/celluloid-io-0.17.3/lib/celluloid/io.rb:54)
    org.jruby.internal.runtime.methods.CompiledIRMethod.call(CompiledIRMethod.java:131)
    org.jruby.internal.runtime.methods.MixedModeIRMethod.call(MixedModeIRMethod.java:181)
    org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:197)
    org.jruby.internal.runtime.methods.WrapperMethod.call(WrapperMethod.java:59)
    org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:161)
    install.path.celluloid_minus_io_minus_0_dot_17_dot_3.lib.celluloid.io.tcp_server.invokeOther6:wait_readable(<install/path>/celluloid-io-0.17.3/lib/celluloid/io/tcp_server.rb)
    install.path.celluloid_minus_io_minus_0_dot_17_dot_3.lib.celluloid.io.tcp_server.RUBY$method$accept$0(<install/path>/celluloid-io-0.17.3/lib/celluloid/io/tcp_server.rb:36)
    org.jruby.internal.runtime.methods.CompiledIRMethod.call(CompiledIRMethod.java:116)
    org.jruby.internal.runtime.methods.MixedModeIRMethod.call(MixedModeIRMethod.java:146)
    org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:189)
    org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:129)
    org.jruby.ir.interpreter.InterpreterEngine.processCall(InterpreterEngine.java:305)
    org.jruby.ir.interpreter.StartupInterpreterEngine.interpret(StartupInterpreterEngine.java:77)
    org.jruby.ir.interpreter.Interpreter.INTERPRET_BLOCK(Interpreter.java:136)
    org.jruby.runtime.InterpretedIRBlockBody.commonYieldPath(InterpretedIRBlockBody.java:118)
    org.jruby.runtime.IRBlockBody.yieldSpecific(IRBlockBody.java:67)
    org.jruby.runtime.Block.yieldSpecific(Block.java:116)
    org.jruby.RubyKernel.loop(RubyKernel.java:1291)
    org.jruby.RubyKernel$INVOKER$s$0$0$loop.call(RubyKernel$INVOKER$s$0$0$loop.gen)
    org.jruby.internal.runtime.methods.JavaMethod$JavaMethodZeroBlock.call(JavaMethod.java:494)
    org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:273)
    org.jruby.runtime.callsite.CachingCallSite.callBlock(CachingCallSite.java:79)
    org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:83)
    org.jruby.ir.instructions.CallBase.interpret(CallBase.java:419)
    org.jruby.ir.interpreter.InterpreterEngine.processCall(InterpreterEngine.java:321)
    org.jruby.ir.interpreter.StartupInterpreterEngine.interpret(StartupInterpreterEngine.java:77)
    org.jruby.internal.runtime.methods.MixedModeIRMethod.INTERPRET_METHOD(MixedModeIRMethod.java:127)
    org.jruby.internal.runtime.methods.MixedModeIRMethod.call(MixedModeIRMethod.java:113)
    org.jruby.RubyClass.finvoke(RubyClass.java:541)
    org.jruby.RubyBasicObject.send19(RubyBasicObject.java:1626)
    org.jruby.RubyBasicObject$INVOKER$i$send19.call(RubyBasicObject$INVOKER$i$send19.gen)
    org.jruby.RubyKernel.public_send(RubyKernel.java:1823)
    org.jruby.RubyKernel$INVOKER$s$0$0$public_send.call(RubyKernel$INVOKER$s$0$0$public_send.gen)
    org.jruby.runtime.callsite.CachingCallSite.callBlock(CachingCallSite.java:77)
    org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:83)
    install.path.celluloid_minus_0_dot_17_dot_3.lib.celluloid.calls.invokeOther6:public_send(<install/path>/celluloid-0.17.3/lib/celluloid/calls.rb)
    install.path.celluloid_minus_0_dot_17_dot_3.lib.celluloid.calls.RUBY$method$dispatch$0(<install/path>/celluloid-0.17.3/lib/celluloid/calls.rb:28)
    org.jruby.internal.runtime.methods.CompiledIRMethod.call(CompiledIRMethod.java:101)
    org.jruby.internal.runtime.methods.MixedModeIRMethod.call(MixedModeIRMethod.java:111)
    org.jruby.ir.runtime.IRRuntimeHelpers.instanceSuper(IRRuntimeHelpers.java:899)
    org.jruby.ir.runtime.IRRuntimeHelpers.instanceSuperSplatArgs(IRRuntimeHelpers.java:892)
    install.path.celluloid_minus_0_dot_17_dot_3.lib.celluloid.call.async.invokeSuper19:dispatch(<install/path>/celluloid-0.17.3/lib/celluloid/call/async.rb)
    install.path.celluloid_minus_0_dot_17_dot_3.lib.celluloid.call.async.RUBY$method$dispatch$0(<install/path>/celluloid-0.17.3/lib/celluloid/call/async.rb:7)
    org.jruby.internal.runtime.methods.CompiledIRMethod.call(CompiledIRMethod.java:131)
    org.jruby.internal.runtime.methods.MixedModeIRMethod.call(MixedModeIRMethod.java:181)
    org.jruby.internal.runtime.methods.DynamicMethod.call(DynamicMethod.java:197)
    org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(CachingCallSite.java:313)
    org.jruby.runtime.callsite.CachingCallSite.call(CachingCallSite.java:163)
    install.path.celluloid_minus_0_dot_17_dot_3.lib.celluloid.cell.invokeOther13:dispatch(<install/path>/celluloid-0.17.3/lib/celluloid/cell.rb)
    install.path.celluloid_minus_0_dot_17_dot_3.lib.celluloid.cell.RUBY$block$dispatch$2(<install/path>/celluloid-0.17.3/lib/celluloid/cell.rb:50)
    org.jruby.runtime.CompiledIRBlockBody.commonYieldPath(CompiledIRBlockBody.java:70)
    org.jruby.runtime.IRBlockBody.doYield(IRBlockBody.java:140)
    org.jruby.runtime.BlockBody.yield(BlockBody.java:77)
    org.jruby.runtime.Block.yield(Block.java:147)
    org.jruby.ir.runtime.IRRuntimeHelpers.yield(IRRuntimeHelpers.java:450)
    install.path.celluloid_minus_0_dot_17_dot_3.lib.celluloid.cell.RUBY$block$task$1(<install/path>/celluloid-0.17.3/lib/celluloid/cell.rb:76)
    org.jruby.runtime.CompiledIRBlockBody.commonYieldPath(CompiledIRBlockBody.java:70)
    org.jruby.runtime.IRBlockBody.yieldSpecific(IRBlockBody.java:67)
    org.jruby.runtime.Block.yieldSpecific(Block.java:116)
    org.jruby.ir.runtime.IRRuntimeHelpers.yieldSpecific(IRRuntimeHelpers.java:457)
    install.path.celluloid_minus_0_dot_17_dot_3.lib.celluloid.actor.RUBY$block$task$1(<install/path>/celluloid-0.17.3/lib/celluloid/actor.rb:339)
    org.jruby.runtime.CompiledIRBlockBody.commonYieldPath(CompiledIRBlockBody.java:70)
    org.jruby.runtime.IRBlockBody.yieldSpecific(IRBlockBody.java:67)
    org.jruby.runtime.Block.yieldSpecific(Block.java:116)
    org.jruby.ir.runtime.IRRuntimeHelpers.yieldSpecific(IRRuntimeHelpers.java:457)
    install.path.celluloid_minus_0_dot_17_dot_3.lib.celluloid.task.RUBY$block$initialize$2(<install/path>/celluloid-0.17.3/lib/celluloid/task.rb:44)
    org.jruby.runtime.CompiledIRBlockBody.commonYieldPath(CompiledIRBlockBody.java:70)
    org.jruby.runtime.IRBlockBody.yieldSpecific(IRBlockBody.java:67)
    org.jruby.runtime.Block.yieldSpecific(Block.java:116)
    org.jruby.ir.runtime.IRRuntimeHelpers.yieldSpecific(IRRuntimeHelpers.java:457)
    install.path.celluloid_minus_0_dot_17_dot_3.lib.celluloid.task.fibered.RUBY$block$create$2(<install/path>/celluloid-0.17.3/lib/celluloid/task/fibered.rb:14)
    org.jruby.runtime.CompiledIRBlockBody.commonYieldPath(CompiledIRBlockBody.java:70)
    org.jruby.runtime.IRBlockBody.doYield(IRBlockBody.java:147)
    org.jruby.runtime.BlockBody.yield(BlockBody.java:83)
    org.jruby.runtime.Block.yieldArray(Block.java:161)
    org.jruby.ext.fiber.ThreadFiber$1.run(ThreadFiber.java:259)
    java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    java.lang.Thread.run(Thread.java:745) 

1. Download original source from this.
http://dist.schmorp.de/libev/

2. Set downloaded files to ext/libev/ .

3. Patch below below things in the case of 4.22.
[PATCH] Update to libev 4.22
https://github.com/celluloid/nio4r/commit/0d9b6a9.patch

ruby -v
ruby 2.0.0p247 (2013-06-27 revision 41674) [universal.x86_64-darwin13]

romans-imac:chef-starter Holms$ cat Gemfile
source 'https://rubygems.org'

gem "berkshelf", '>= 3.0.0.beta1'
gem "knife-solo"

Fetching gem metadata from https://rubygems.org/........
Fetching additional metadata from https://rubygems.org/..
Using addressable 2.3.6
Using multipart-post 1.2.0
Using faraday 0.8.9
Using berkshelf-api-client 1.1.1
Using buff-extensions 0.5.0
Using hashie 2.0.5
Using varia_model 0.3.2
Using buff-config 0.4.0
Using buff-ruby_engine 0.1.0
Using buff-shell_out 0.1.1
Using minitar 0.5.4
Using sawyer 0.5.4
Using octokit 2.7.2
Using retryable 1.3.5
Using buff-ignore 1.1.1
Using timers 1.1.0
Using celluloid 0.15.2

Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.

    /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby extconf.rb 
checking for rb_thread_blocking_region()... yes
checking for sys/select.h... yes
checking for poll.h... yes
checking for sys/epoll.h... no
checking for sys/event.h... yes
checking for sys/queue.h... yes
checking for port.h... no
checking for sys/resource.h... yes
creating Makefile

make "DESTDIR="
compiling monitor.c
In file included from monitor.c:6:
In file included from ./nio4r.h:10:
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0/ruby/backward/rubyio.h:2:2: warning: use "ruby/io.h" instead of "rubyio.h" [-W#warnings]
#warning use "ruby/io.h" instead of "rubyio.h"
 ^
1 warning generated.
compiling nio4r_ext.c
In file included from nio4r_ext.c:6:
In file included from ./nio4r.h:10:
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0/ruby/backward/rubyio.h:2:2: warning: use "ruby/io.h" instead of "rubyio.h" [-W#warnings]
#warning use "ruby/io.h" instead of "rubyio.h"
 ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:481:48: warning: '/*' within block comment [-Wcomment]
/*#define MIN_INTERVAL  0.00000095367431640625 /* 1/2**20, good till 2200 */
                                               ^
./../libev/ev.c:1535:31: warning: 'extern' variable has an initializer [-Wextern-initializer]
  EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
                              ^
In file included from nio4r_ext.c:7:
In file included from ./../libev/ev.c:2400:
./../libev/ev_poll.c:110:18: warning: expression result unused [-Wunused-value]
        assert (("libev: poll() returned illegal result, broken BSD kernel?", p < polls + pollcnt));
                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2806:12: warning: expression result unused [-Wunused-value]
  assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2809:14: warning: expression result unused [-Wunused-value]
    assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2819:16: warning: expression result unused [-Wunused-value]
      assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2820:16: warning: expression result unused [-Wunused-value]
      assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2821:16: warning: expression result unused [-Wunused-value]
      assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2832:16: warning: expression result unused [-Wunused-value]
      assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2850:14: warning: expression result unused [-Wunused-value]
    assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2863:24: warning: expression result unused [-Wunused-value]
              assert (("libev: io watcher list contains a loop", w != w2));
                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2867:20: warning: expression result unused [-Wunused-value]
          assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2868:20: warning: expression result unused [-Wunused-value]
          assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3050:24: warning: expression result unused [-Wunused-value]
              assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3112:24: warning: expression result unused [-Wunused-value]
              assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3257:1: warning: control reaches end of non-void function [-Wreturn-type]
}
^
./../libev/ev.c:3274:12: warning: expression result unused [-Wunused-value]
  assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3446:22: warning: expression result unused [-Wunused-value]
            assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3620:12: warning: expression result unused [-Wunused-value]
  assert (("libev: ev_io_start called with negative fd", fd >= 0));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3621:12: warning: expression result unused [-Wunused-value]
  assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3630:12: warning: expression result unused [-Wunused-value]
  assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3632:34: warning: '&' within '|' [-Wbitwise-op-parentheses]
  fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
                       ~~~~~~~~~~^~~~~~~~~~~~~ ~
./../libev/ev.c:3632:34: note: place parentheses around the '&' expression to silence this warning
  fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
                                 ^
                       (                      )
./../libev/ev.c:3645:12: warning: expression result unused [-Wunused-value]
  assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3665:12: warning: expression result unused [-Wunused-value]
  assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3693:14: warning: expression result unused [-Wunused-value]
    assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3755:16: warning: expression result unused [-Wunused-value]
      assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3787:14: warning: expression result unused [-Wunused-value]
    assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3824:12: warning: expression result unused [-Wunused-value]
  assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3827:12: warning: expression result unused [-Wunused-value]
  assert (("libev: a signal must not be attached to two different loops",
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3945:12: warning: expression result unused [-Wunused-value]
  assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:4524:14: warning: expression result unused [-Wunused-value]
    assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
32 warnings generated.
compiling selector.c
In file included from selector.c:6:
In file included from ./nio4r.h:10:
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0/ruby/backward/rubyio.h:2:2: warning: use "ruby/io.h" instead of "rubyio.h" [-W#warnings]
#warning use "ruby/io.h" instead of "rubyio.h"
 ^
In file included from selector.c:7:
/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.9.sdk/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/include/ruby-2.0.0/ruby/backward/rubysig.h:14:2: warning: rubysig.h is obsolete [-W#warnings]
#warning rubysig.h is obsolete
 ^
selector.c:391:43: warning: incompatible pointer types passing 'VALUE (VALUE)' to parameter of type 'VALUE (*)(VALUE *)' [-Wincompatible-pointer-types]
    return NIO_Selector_synchronize(self, NIO_Selector_close_synchronized, self);
                                          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
selector.c:157:59: note: passing argument to parameter 'func' here
static VALUE NIO_Selector_synchronize(VALUE self, VALUE (*func)(VALUE *args), VALUE *args)
                                                          ^
selector.c:391:76: warning: incompatible integer to pointer conversion passing 'VALUE' (aka 'unsigned long') to parameter of type 'VALUE *' (aka 'unsigned long *'); take the address with & [-Wint-conversion]
    return NIO_Selector_synchronize(self, NIO_Selector_close_synchronized, self);
                                                                           ^~~~
                                                                           &
selector.c:157:86: note: passing argument to parameter 'args' here
static VALUE NIO_Selector_synchronize(VALUE self, VALUE (*func)(VALUE *args), VALUE *args)
                                                                                     ^
selector.c:407:43: warning: incompatible pointer types passing 'VALUE (VALUE)' to parameter of type 'VALUE (*)(VALUE *)' [-Wincompatible-pointer-types]
    return NIO_Selector_synchronize(self, NIO_Selector_closed_synchronized, self);
                                          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
selector.c:157:59: note: passing argument to parameter 'func' here
static VALUE NIO_Selector_synchronize(VALUE self, VALUE (*func)(VALUE *args), VALUE *args)
                                                          ^
selector.c:407:77: warning: incompatible integer to pointer conversion passing 'VALUE' (aka 'unsigned long') to parameter of type 'VALUE *' (aka 'unsigned long *'); take the address with & [-Wint-conversion]
    return NIO_Selector_synchronize(self, NIO_Selector_closed_synchronized, self);
                                                                            ^~~~
                                                                            &
selector.c:157:86: note: passing argument to parameter 'args' here
static VALUE NIO_Selector_synchronize(VALUE self, VALUE (*func)(VALUE *args), VALUE *args)
                                                                                     ^
6 warnings generated.
linking shared-object nio4r_ext.bundle
clang: error: unknown argument: '-multiply_definedsuppress' [-Wunused-command-line-argument-hard-error-in-future]
clang: note: this will be a hard error (cannot be downgraded to a warning) in the future
make: *** [nio4r_ext.bundle] Error 1


Gem files will remain installed in /var/folders/7q/xmnbj5dd6gg3v7xhw9h7kv180000gn/T/bundler20140402-59059-1u9b1cm/nio4r-1.0.0/gems/nio4r-1.0.0 for inspection.
Results logged to /var/folders/7q/xmnbj5dd6gg3v7xhw9h7kv180000gn/T/bundler20140402-59059-1u9b1cm/nio4r-1.0.0/gems/nio4r-1.0.0/ext/nio4r/gem_make.out
An error occurred while installing nio4r (1.0.0), and Bundler cannot continue.
Make sure that `gem install nio4r -v '1.0.0'` succeeds before bundling.

-> % jruby --version
jruby 1.7.8 (1.9.3p392) 2013-11-14 0ce429e on OpenJDK 64-Bit Server VM 1.7.0_45-b31 [linux-amd64]

rbenv install 2.2.1
rbenv local 2.2.1
gem install nio4r

Building native extensions.  This could take a while...
ERROR:  Error installing nio4r:
    ERROR: Failed to build gem native extension.

    /Users/wanelo/.rbenv/versions/2.2.1/bin/ruby -r ./siteconf20150908-74370-19l5j9y.rb extconf.rb
checking for rb_thread_blocking_region()... no
checking for sys/select.h... yes
checking for poll.h... yes
checking for sys/epoll.h... no
checking for sys/event.h... yes
checking for sys/queue.h... yes
checking for port.h... no
checking for sys/resource.h... yes
creating Makefile

make "DESTDIR=" clean

make "DESTDIR="
compiling monitor.c
In file included from monitor.c:6:
In file included from ./nio4r.h:10:
/Users/wanelo/.rbenv/versions/2.2.1/include/ruby-2.2.0/ruby/backward/rubyio.h:2:2: warning: use "ruby/io.h" instead of "rubyio.h" [-W#warnings]
#warning use "ruby/io.h" instead of "rubyio.h"
 ^
1 warning generated.
compiling nio4r_ext.c
In file included from nio4r_ext.c:6:
In file included from ./nio4r.h:10:
/Users/wanelo/.rbenv/versions/2.2.1/include/ruby-2.2.0/ruby/backward/rubyio.h:2:2: warning: use "ruby/io.h" instead of "rubyio.h" [-W#warnings]
#warning use "ruby/io.h" instead of "rubyio.h"
 ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:481:48: warning: '/*' within block comment [-Wcomment]
/*#define MIN_INTERVAL  0.00000095367431640625 /* 1/2**20, good till 2200 */
                                               ^
./../libev/ev.c:1535:31: warning: 'extern' variable has an initializer [-Wextern-initializer]
  EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
                              ^
In file included from nio4r_ext.c:7:
In file included from ./../libev/ev.c:2400:
./../libev/ev_poll.c:110:18: warning: expression result unused [-Wunused-value]
        assert (("libev: poll() returned illegal result, broken BSD kernel?", p < polls + pollcnt));
                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2806:12: warning: expression result unused [-Wunused-value]
  assert (("libev: watcher has invalid priority", ABSPRI (w) >= 0 && ABSPRI (w) < NUMPRI));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2809:14: warning: expression result unused [-Wunused-value]
    assert (("libev: pending watcher not on pending queue", pendings [ABSPRI (w)][w->pending - 1].w == w));
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2819:16: warning: expression result unused [-Wunused-value]
      assert (("libev: active index mismatch in heap", ev_active (ANHE_w (heap [i])) == i));
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2820:16: warning: expression result unused [-Wunused-value]
      assert (("libev: heap condition violated", i == HEAP0 || ANHE_at (heap [HPARENT (i)]) <= ANHE_at (heap [i])));
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2821:16: warning: expression result unused [-Wunused-value]
      assert (("libev: heap at cache mismatch", ANHE_at (heap [i]) == ev_at (ANHE_w (heap [i]))));
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2832:16: warning: expression result unused [-Wunused-value]
      assert (("libev: active index mismatch", ev_active (ws [cnt]) == cnt + 1));
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2850:14: warning: expression result unused [-Wunused-value]
    assert (("libev: negative fd in fdchanges", fdchanges [i] >= 0));
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2863:24: warning: expression result unused [-Wunused-value]
              assert (("libev: io watcher list contains a loop", w != w2));
                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2867:20: warning: expression result unused [-Wunused-value]
          assert (("libev: inactive fd watcher on anfd list", ev_active (w) == 1));
                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:2868:20: warning: expression result unused [-Wunused-value]
          assert (("libev: fd mismatch between watcher and anfd", ((ev_io *)w)->fd == i));
                   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3050:24: warning: expression result unused [-Wunused-value]
              assert (("libev: negative ev_timer repeat value found while processing timers", w->repeat > 0.));
                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3112:24: warning: expression result unused [-Wunused-value]
              assert (("libev: ev_periodic reschedule callback returned time in the past", ev_at (w) >= ev_rt_now));
                       ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3274:12: warning: expression result unused [-Wunused-value]
  assert (("libev: ev_loop recursion during release detected", loop_done != EVBREAK_RECURSE));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3446:22: warning: expression result unused [-Wunused-value]
            assert (("libev: pipe_w not active, but pipe not written", ev_is_active (&pipe_w)));
                     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3620:12: warning: expression result unused [-Wunused-value]
  assert (("libev: ev_io_start called with negative fd", fd >= 0));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3621:12: warning: expression result unused [-Wunused-value]
  assert (("libev: ev_io_start called with illegal event mask", !(w->events & ~(EV__IOFDSET | EV_READ | EV_WRITE))));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3630:12: warning: expression result unused [-Wunused-value]
  assert (("libev: ev_io_start called with corrupted watcher", ((WL)w)->next != (WL)w));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3632:34: warning: '&' within '|' [-Wbitwise-op-parentheses]
  fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
                       ~~~~~~~~~~^~~~~~~~~~~~~ ~
./../libev/ev.c:3632:34: note: place parentheses around the '&' expression to silence this warning
  fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
                                 ^
                       (                      )
./../libev/ev.c:3645:12: warning: expression result unused [-Wunused-value]
  assert (("libev: ev_io_stop called with illegal fd (must stay constant after start!)", w->fd >= 0 && w->fd < anfdmax));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3665:12: warning: expression result unused [-Wunused-value]
  assert (("libev: ev_timer_start called with negative timer repeat value", w->repeat >= 0.));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3693:14: warning: expression result unused [-Wunused-value]
    assert (("libev: internal timer heap corruption", ANHE_w (timers [active]) == (WT)w));
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3755:16: warning: expression result unused [-Wunused-value]
      assert (("libev: ev_periodic_start called with negative interval value", w->interval >= 0.));
               ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3787:14: warning: expression result unused [-Wunused-value]
    assert (("libev: internal periodic heap corruption", ANHE_w (periodics [active]) == (WT)w));
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3824:12: warning: expression result unused [-Wunused-value]
  assert (("libev: ev_signal_start called with illegal signal number", w->signum > 0 && w->signum < EV_NSIG));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3827:12: warning: expression result unused [-Wunused-value]
  assert (("libev: a signal must not be attached to two different loops",
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:3945:12: warning: expression result unused [-Wunused-value]
  assert (("libev: child watchers are only supported in the default loop", loop == ev_default_loop_ptr));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
In file included from nio4r_ext.c:7:
./../libev/ev.c:4524:14: warning: expression result unused [-Wunused-value]
    assert (("libev: loop to be embedded is not embeddable", backend & ev_embeddable_backends ()));
             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/assert.h:93:25: note: expanded from macro 'assert'
    (__builtin_expect(!(e), 0) ? __assert_rtn(__func__, __FILE__, __LINE__, #e) : (void)0)
                        ^
31 warnings generated.
compiling selector.c
In file included from selector.c:6:
In file included from ./nio4r.h:10:
/Users/wanelo/.rbenv/versions/2.2.1/include/ruby-2.2.0/ruby/backward/rubyio.h:2:2: warning: use "ruby/io.h" instead of "rubyio.h" [-W#warnings]
#warning use "ruby/io.h" instead of "rubyio.h"
 ^
In file included from selector.c:7:
/Users/wanelo/.rbenv/versions/2.2.1/include/ruby-2.2.0/ruby/backward/rubysig.h:14:2: warning: rubysig.h is obsolete [-W#warnings]
#warning rubysig.h is obsolete
 ^
selector.c:341:9: error: use of undeclared identifier 'TRAP_BEG'
        TRAP_BEG;
        ^
selector.c:343:9: error: use of undeclared identifier 'TRAP_END'
        TRAP_END;
        ^
selector.c:352:13: error: use of undeclared identifier 'TRAP_BEG'
            TRAP_BEG;
            ^
selector.c:354:13: error: use of undeclared identifier 'TRAP_END'
            TRAP_END;
            ^
selector.c:391:43: warning: incompatible pointer types passing 'VALUE (VALUE)' to parameter of type 'VALUE (*)(VALUE *)' [-Wincompatible-pointer-types]
    return NIO_Selector_synchronize(self, NIO_Selector_close_synchronized, self);
                                          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
selector.c:157:59: note: passing argument to parameter 'func' here
static VALUE NIO_Selector_synchronize(VALUE self, VALUE (*func)(VALUE *args), VALUE *args)
                                                          ^
selector.c:391:76: warning: incompatible integer to pointer conversion passing 'VALUE' (aka 'unsigned long') to parameter of type 'VALUE *' (aka 'unsigned long *'); take the address with & [-Wint-conversion]
    return NIO_Selector_synchronize(self, NIO_Selector_close_synchronized, self);
                                                                           ^~~~
                                                                           &
selector.c:157:86: note: passing argument to parameter 'args' here
static VALUE NIO_Selector_synchronize(VALUE self, VALUE (*func)(VALUE *args), VALUE *args)
                                                                                     ^
selector.c:407:43: warning: incompatible pointer types passing 'VALUE (VALUE)' to parameter of type 'VALUE (*)(VALUE *)' [-Wincompatible-pointer-types]
    return NIO_Selector_synchronize(self, NIO_Selector_closed_synchronized, self);
                                          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
selector.c:157:59: note: passing argument to parameter 'func' here
static VALUE NIO_Selector_synchronize(VALUE self, VALUE (*func)(VALUE *args), VALUE *args)
                                                          ^
selector.c:407:77: warning: incompatible integer to pointer conversion passing 'VALUE' (aka 'unsigned long') to parameter of type 'VALUE *' (aka 'unsigned long *'); take the address with & [-Wint-conversion]
    return NIO_Selector_synchronize(self, NIO_Selector_closed_synchronized, self);
                                                                            ^~~~
                                                                            &
selector.c:157:86: note: passing argument to parameter 'args' here
static VALUE NIO_Selector_synchronize(VALUE self, VALUE (*func)(VALUE *args), VALUE *args)
                                                                                     ^
6 warnings and 4 errors generated.
make: *** [selector.o] Error 1

make failed, exit code 2

Gem files will remain installed in /Users/wanelo/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/gems/nio4r-1.0.0 for inspection.
Results logged to /Users/wanelo/.rbenv/versions/2.2.1/lib/ruby/gems/2.2.0/extensions/x86_64-darwin-13/2.2.0-static/nio4r-1.0.0/gem_make.out