current directory: /home/nikhitha/gem/activeadmin_datetime_picker/vendor/bundle/ruby/2.6.0/gems/nio4r-2.5.8/ext/nio4r
/home/nikhitha/.rvm/rubies/ruby-2.6.3/bin/ruby -I /home/nikhitha/.rvm/rubies/ruby-2.6.3/lib/ruby/2.6.0 -r ./siteconf20211115-11626-rf0z6j.rb extconf.rb
checking for unistd.h... yes
checking for linux/aio_abi.h... yes
checking for linux/io_uring.h... no
checking for sys/select.h... yes
checking for port_event_t in poll.h... no
checking for sys/epoll.h... yes
checking for sys/event.h... no
checking for port_event_t in port.h... no
checking for sys/resource.h... yes
creating Makefile

current directory: /home/nikhitha/gem/activeadmin_datetime_picker/vendor/bundle/ruby/2.6.0/gems/nio4r-2.5.8/ext/nio4r
make "DESTDIR=" clean

current directory: /home/nikhitha/gem/activeadmin_datetime_picker/vendor/bundle/ruby/2.6.0/gems/nio4r-2.5.8/ext/nio4r
make "DESTDIR="
compiling bytebuffer.c
compiling monitor.c
compiling nio4r_ext.c
In file included from nio4r_ext.c:6:0:
../libev/ev.c:573:48: warning: "/*" within comment [-Wcomment]
 /*#define MIN_INTERVAL  0.00000095367431640625 /* 1/2**20, good till 2200 */
                                                 
In file included from nio4r_ext.c:6:0:
../libev/ev.c: In function ‘ecb_binary32_to_binary16’:
../libev/ev.c:1510:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
       if (e < (14 - 24)) /* might not be sharp, but is good enough */
             ^
In file included from nio4r_ext.c:6:0:
../libev/ev.c: At top level:
../libev/ev.c:2136:31: warning: ‘ev_default_loop_ptr’ initialized and declared ‘extern’
   EV_API_DECL struct ev_loop *ev_default_loop_ptr = 0; /* needs to be initialised to make it a definition despite extern */
                               ^~~~~~~~~~~~~~~~~~~
../libev/ev.c: In function ‘array_nextsize’:
../libev/ev.c:2249:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   if (elem * ncur > MALLOC_ROUND - sizeof (void *) * 4)
                   ^
In file included from ../libev/ev.c:3086:0,
                 from nio4r_ext.c:6:
../libev/ev_linuxaio.c: In function ‘linuxaio_modify’:
../libev/ev_linuxaio.c:237:3: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
   ANIOCBP iocb = linuxaio_iocbps [fd];
   ^~~~~~~
../libev/ev_linuxaio.c: In function ‘linuxaio_poll’:
../libev/ev_linuxaio.c:467:10: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wdangling-else]
       if (ecb_expect_false (res < 0))
          ^
In file included from nio4r_ext.c:6:0:
../libev/ev.c: In function ‘ev_io_start’:
../libev/ev.c:4417:34: warning: suggest parentheses around arithmetic in operand of ‘|’ [-Wparentheses]
   fd_change (EV_A_ fd, w->events & EV__IOFDSET | EV_ANFD_REIFY);
                        ~~~~~~~~~~^~~~~~~~~~~~~
../libev/ev.c: At top level:
../libev/ev.c:5682:27: warning: "/*" within comment [-Wcomment]
 /* EV_STAT     0x00001000 /* stat data changed */
                            
../libev/ev.c:5683:27: warning: "/*" within comment [-Wcomment]
 /* EV_EMBED    0x00010000 /* embedded event loop needs sweep */
                            
In file included from nio4r_ext.c:6:0:
../libev/ev.c: In function ‘evpipe_write’:
../libev/ev.c:2798:11: warning: ignoring return value of ‘write’, declared with attribute warn_unused_result [-Wunused-result]
           write (evpipe [1], &counter, sizeof (uint64_t));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libev/ev.c:2810:11: warning: ignoring return value of ‘write’, declared with attribute warn_unused_result [-Wunused-result]
           write (evpipe [1], &(evpipe [1]), 1);
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libev/ev.c: In function ‘pipecb’:
../libev/ev.c:2831:11: warning: ignoring return value of ‘read’, declared with attribute warn_unused_result [-Wunused-result]
           read (evpipe [1], &counter, sizeof (uint64_t));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
../libev/ev.c:2845:11: warning: ignoring return value of ‘read’, declared with attribute warn_unused_result [-Wunused-result]
           read (evpipe [0], &dummy, sizeof (dummy));
           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
nio4r_ext.c: At top level:
cc1: warning: unrecognized command line option ‘-Wno-self-assign’
cc1: warning: unrecognized command line option ‘-Wno-parentheses-equality’
cc1: warning: unrecognized command line option ‘-Wno-constant-logical-operand’
cc1: warning: unrecognized command line option ‘-Wno-cast-function-type’
compiling selector.c
selector.c: In function ‘NIO_Selector_wakeup’:
selector.c:499:5: warning: ignoring return value of ‘write’, declared with attribute warn_unused_result [-Wunused-result]
     write(selector->wakeup_writer, "\0", 1);
     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
selector.c: At top level:
cc1: warning: unrecognized command line option ‘-Wno-self-assign’
cc1: warning: unrecognized command line option ‘-Wno-parentheses-equality’
cc1: warning: unrecognized command line option ‘-Wno-constant-logical-operand’
cc1: warning: unrecognized command line option ‘-Wno-cast-function-type’
linking shared-object nio4r_ext.so

current directory: /home/nikhitha/gem/activeadmin_datetime_picker/vendor/bundle/ruby/2.6.0/gems/nio4r-2.5.8/ext/nio4r
make "DESTDIR=" install
/usr/bin/install -m 0755 nio4r_ext.so ./.gem.20211115-11626-ky7qi4