cool.io.compile.error.in.ubuntu

jun@ubuntu_suzukaze:~/work/fluentd/fork/fluentd$ gem install cool.io -v '1.1.1'
Building native extensions.  This could take a while...
ERROR:  Error installing cool.io:
	ERROR: Failed to build gem native extension.

    /home/jun/.rbenv/versions/2.0.0-dev/bin/ruby extconf.rb
checking for rb_thread_blocking_region()... no
checking for rb_thread_alone()... yes
checking for rb_str_set_len()... yes
checking for clock_gettime() in -lrt... yes
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 cool.io_ext.c
In file included from cool.io.h:11:0,
                 from cool.io_ext.c:11:
/home/jun/.rbenv/versions/2.0.0-dev/include/ruby-2.2.0/ruby/backward/rubyio.h:2:2: 警告: #warning use "ruby/io.h" instead of "rubyio.h" [-Wcpp]
cool.io_ext.c: 関数 ‘Init_cool’ 内:
cool.io_ext.c:19:3: 警告: 関数 ‘Init_coolio_loop’ の暗黙的な宣言です [-Wimplicit-function-declaration]
cool.io_ext.c:20:3: 警告: 関数 ‘Init_coolio_watcher’ の暗黙的な宣言です [-Wimplicit-function-declaration]
cool.io_ext.c:21:3: 警告: 関数 ‘Init_coolio_iowatcher’ の暗黙的な宣言です [-Wimplicit-function-declaration]
cool.io_ext.c:22:3: 警告: 関数 ‘Init_coolio_timer_watcher’ の暗黙的な宣言です [-Wimplicit-function-declaration]
cool.io_ext.c:23:3: 警告: 関数 ‘Init_coolio_stat_watcher’ の暗黙的な宣言です [-Wimplicit-function-declaration]
cool.io_ext.c:24:3: 警告: 関数 ‘Init_coolio_utils’ の暗黙的な宣言です [-Wimplicit-function-declaration]
cool.io_ext.c: トップレベル:
cool.io_ext.c:13:14: 警告: ‘mCoolio’ が定義されましたが使用されません [-Wunused-variable]
compiling iowatcher.c
In file included from iowatcher.c:8:0:
/home/jun/.rbenv/versions/2.0.0-dev/include/ruby-2.2.0/ruby/backward/rubyio.h:2:2: 警告: #warning use "ruby/io.h" instead of "rubyio.h" [-Wcpp]
In file included from cool.io.h:11:0,
                 from iowatcher.c:12:
/home/jun/.rbenv/versions/2.0.0-dev/include/ruby-2.2.0/ruby/backward/rubyio.h:2:2: 警告: #warning use "ruby/io.h" instead of "rubyio.h" [-Wcpp]
iowatcher.c: 関数 ‘Coolio_IOWatcher_initialize’ 内:
iowatcher.c:75:15: 警告: assignment discards ‘const’ qualifier from pointer target type [デフォルトで有効]
iowatcher.c:90:3: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
iowatcher.c:90:3: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
iowatcher.c:90:3: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
compiling watcher.c
In file included from cool.io.h:11:0,
                 from watcher.c:10:
/home/jun/.rbenv/versions/2.0.0-dev/include/ruby-2.2.0/ruby/backward/rubyio.h:2:2: 警告: #warning use "ruby/io.h" instead of "rubyio.h" [-Wcpp]
compiling libev.c
In file included from libev.c:8:0:
../libev/ev.c: 関数 ‘array_nextsize’ 内:
../libev/ev.c:845:19: 警告: 符号付きと符号無しの整数式の間での比較です [-Wsign-compare]
../libev/ev.c: 関数 ‘ev_feed_event’ 内:
../libev/ev.c:907:7: 警告: 使用されない変数 ‘ocur_’ です [-Wunused-variable]
../libev/ev.c: 関数 ‘feed_reverse’ 内:
../libev/ev.c:916:3: 警告: 使用されない変数 ‘ocur_’ です [-Wunused-variable]
../libev/ev.c: 関数 ‘fd_change’ 内:
../libev/ev.c:1043:7: 警告: 使用されない変数 ‘ocur_’ です [-Wunused-variable]
../libev/ev.c: 関数 ‘evpipe_init’ 内:
../libev/ev.c:1293:3: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
In file included from ../libev/ev.c:1541:0,
                 from libev.c:8:
../libev/ev_epoll.c: 関数 ‘epoll_modify’ 内:
../libev/ev_epoll.c:127:11: 警告: 使用されない変数 ‘ocur_’ です [-Wunused-variable]
../libev/ev_epoll.c: トップレベル:
../libev/ev_epoll.c:222:1: 警告: ‘static’ は宣言の開始ではありません [-Wold-style-declaration]
../libev/ev_epoll.c:222:1: 警告: ‘inline’ は宣言の開始ではありません [-Wold-style-declaration]
../libev/ev_epoll.c:247:1: 警告: ‘static’ は宣言の開始ではありません [-Wold-style-declaration]
../libev/ev_epoll.c:247:1: 警告: ‘inline’ は宣言の開始ではありません [-Wold-style-declaration]
../libev/ev_epoll.c:254:1: 警告: ‘static’ は宣言の開始ではありません [-Wold-style-declaration]
../libev/ev_epoll.c:254:1: 警告: ‘inline’ は宣言の開始ではありません [-Wold-style-declaration]
In file included from ../libev/ev.c:1544:0,
                 from libev.c:8:
../libev/ev_poll.c:42:1: 警告: ‘static’ は宣言の開始ではありません [-Wold-style-declaration]
../libev/ev_poll.c:42:1: 警告: ‘inline’ は宣言の開始ではありません [-Wold-style-declaration]
../libev/ev_poll.c: 関数 ‘poll_modify’ 内:
../libev/ev_poll.c:66:7: 警告: 使用されない変数 ‘ocur_’ です [-Wunused-variable]
../libev/ev_poll.c: 関数 ‘poll_poll’ 内:
../libev/ev_poll.c:110:9: 警告: カンマ演算子の左側の式に効力がありません [-Wunused-value]
../libev/ev_poll.c: トップレベル:
../libev/ev_poll.c:129:1: 警告: ‘static’ は宣言の開始ではありません [-Wold-style-declaration]
../libev/ev_poll.c:129:1: 警告: ‘inline’ は宣言の開始ではありません [-Wold-style-declaration]
../libev/ev_poll.c:142:1: 警告: ‘static’ は宣言の開始ではありません [-Wold-style-declaration]
../libev/ev_poll.c:142:1: 警告: ‘inline’ は宣言の開始ではありません [-Wold-style-declaration]
In file included from ../libev/ev.c:1547:0,
                 from libev.c:8:
../libev/ev_select.c:269:1: 警告: ‘static’ は宣言の開始ではありません [-Wold-style-declaration]
../libev/ev_select.c:269:1: 警告: ‘inline’ は宣言の開始ではありません [-Wold-style-declaration]
../libev/ev_select.c:298:1: 警告: ‘static’ は宣言の開始ではありません [-Wold-style-declaration]
../libev/ev_select.c:298:1: 警告: ‘inline’ は宣言の開始ではありません [-Wold-style-declaration]
In file included from libev.c:8:0:
../libev/ev.c:1563:1: 警告: ‘static’ は宣言の開始ではありません [-Wold-style-declaration]
../libev/ev.c:1563:1: 警告: ‘inline’ は宣言の開始ではありません [-Wold-style-declaration]
../libev/ev.c: 関数 ‘loop_init’ 内:
../libev/ev.c:1761:7: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c:1761:7: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c:1761:7: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c:1764:7: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c:1764:7: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c:1764:7: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c:1765:7: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c: 関数 ‘ev_loop_destroy’ 内:
../libev/ev.c:1792:3: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c:1799:3: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c:1817:3: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c: 関数 ‘loop_fork’ 内:
../libev/ev.c:1909:3: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c: 関数 ‘verify_watcher’ 内:
../libev/ev.c:1965:3: 警告: カンマ演算子の左側の式に効力がありません [-Wunused-value]
../libev/ev.c:1968:5: 警告: カンマ演算子の左側の式に効力がありません [-Wunused-value]
../libev/ev.c: 関数 ‘verify_heap’ 内:
../libev/ev.c:1978:7: 警告: カンマ演算子の左側の式に効力がありません [-Wunused-value]
../libev/ev.c:1979:7: 警告: カンマ演算子の左側の式に効力がありません [-Wunused-value]
../libev/ev.c:1980:7: 警告: カンマ演算子の左側の式に効力がありません [-Wunused-value]
../libev/ev.c: 関数 ‘array_verify’ 内:
../libev/ev.c:1991:7: 警告: カンマ演算子の左側の式に効力がありません [-Wunused-value]
../libev/ev.c: 関数 ‘ev_verify’ 内:
../libev/ev.c:2009:5: 警告: カンマ演算子の左側の式に効力がありません [-Wunused-value]
../libev/ev.c:2016:9: 警告: カンマ演算子の左側の式に効力がありません [-Wunused-value]
../libev/ev.c:2017:9: 警告: カンマ演算子の左側の式に効力がありません [-Wunused-value]
../libev/ev.c: 関数 ‘ev_default_loop’ 内:
../libev/ev.c:2093:11: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c:2093:11: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c:2093:11: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c:2094:11: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c: 関数 ‘timers_reify’ 内:
../libev/ev.c:2194:15: 警告: カンマ演算子の左側の式に効力がありません [-Wunused-value]
../libev/ev.c: 関数 ‘periodics_reify’ 内:
../libev/ev.c:2242:15: 警告: カンマ演算子の左側の式に効力がありません [-Wunused-value]
../libev/ev.c:2229:11: 警告: 使用されない変数 ‘feed_count’ です [-Wunused-variable]
../libev/ev.c: 関数 ‘ev_run’ 内:
../libev/ev.c:2392:3: 警告: カンマ演算子の左側の式に効力がありません [-Wunused-value]
../libev/ev.c: 関数 ‘ev_io_start’ 内:
../libev/ev.c:2665:3: 警告: カンマ演算子の左側の式に効力がありません [-Wunused-value]
../libev/ev.c:2666:3: 警告: カンマ演算子の左側の式に効力がありません [-Wunused-value]
../libev/ev.c: 関数 ‘ev_io_stop’ 内:
../libev/ev.c:2687:3: 警告: カンマ演算子の左側の式に効力がありません [-Wunused-value]
../libev/ev.c: 関数 ‘ev_timer_start’ 内:
../libev/ev.c:2707:3: 警告: カンマ演算子の左側の式に効力がありません [-Wunused-value]
../libev/ev.c:2713:3: 警告: 使用されない変数 ‘ocur_’ です [-Wunused-variable]
../libev/ev.c: 関数 ‘ev_timer_stop’ 内:
../libev/ev.c:2735:5: 警告: カンマ演算子の左側の式に効力がありません [-Wunused-value]
../libev/ev.c: 関数 ‘ev_periodic_start’ 内:
../libev/ev.c:2795:7: 警告: カンマ演算子の左側の式に効力がありません [-Wunused-value]
../libev/ev.c:2805:3: 警告: 使用されない変数 ‘ocur_’ です [-Wunused-variable]
../libev/ev.c: 関数 ‘ev_periodic_stop’ 内:
../libev/ev.c:2827:5: 警告: カンマ演算子の左側の式に効力がありません [-Wunused-value]
../libev/ev.c: 関数 ‘ev_signal_start’ 内:
../libev/ev.c:2864:3: 警告: カンマ演算子の左側の式に効力がありません [-Wunused-value]
../libev/ev.c:2867:3: 警告: カンマ演算子の左側の式に効力がありません [-Wunused-value]
../libev/ev.c:2888:11: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c:2888:11: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c:2888:11: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c:2889:11: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c: 関数 ‘ev_child_start’ 内:
../libev/ev.c:2984:3: 警告: カンマ演算子の左側の式に効力がありません [-Wunused-value]
In file included from libev.c:8:0:
../libev/ev.c: 関数 ‘infy_add’ 内:
../libev/ev.c:3092:3: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c:3094:3: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c: 関数 ‘infy_init’ 内:
../libev/ev.c:3198:7: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c:3198:7: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c:3198:7: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c:3199:7: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c: 関数 ‘infy_fork’ 内:
../libev/ev.c:3243:15: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c:3245:15: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c: 関数 ‘ev_stat_start’ 内:
../libev/ev.c:3319:3: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c:3319:3: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c:3319:3: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c:3319:3: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c:3320:3: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c: 関数 ‘ev_stat_stop’ 内:
../libev/ev.c:3352:3: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c: 関数 ‘ev_idle_start’ 内:
../libev/ev.c:3381:5: 警告: 使用されない変数 ‘ocur_’ です [-Wunused-variable]
../libev/ev.c: 関数 ‘ev_prepare_start’ 内:
../libev/ev.c:3421:3: 警告: 使用されない変数 ‘ocur_’ です [-Wunused-variable]
../libev/ev.c: 関数 ‘ev_check_start’ 内:
../libev/ev.c:3459:3: 警告: 使用されない変数 ‘ocur_’ です [-Wunused-variable]
../libev/ev.c: 関数 ‘ev_embed_start’ 内:
../libev/ev.c:3554:5: 警告: カンマ演算子の左側の式に効力がありません [-Wunused-value]
../libev/ev.c:3555:5: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c:3555:5: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c:3555:5: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c:3560:3: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c:3563:3: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c:3563:3: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c:3563:3: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c:3564:3: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c:3567:3: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c:3567:3: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c:3567:3: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c: 関数 ‘ev_fork_start’ 内:
../libev/ev.c:3606:3: 警告: 使用されない変数 ‘ocur_’ です [-Wunused-variable]
../libev/ev.c: 関数 ‘ev_cleanup_start’ 内:
../libev/ev.c:3644:3: 警告: 使用されない変数 ‘ocur_’ です [-Wunused-variable]
../libev/ev.c: 関数 ‘ev_async_start’ 内:
../libev/ev.c:3689:3: 警告: 使用されない変数 ‘ocur_’ です [-Wunused-variable]
../libev/ev.c: 関数 ‘ev_once’ 内:
../libev/ev.c:3777:3: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c:3777:3: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c:3777:3: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c:3784:3: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c:3784:3: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c:3784:3: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c:3787:7: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
../libev/ev.c: トップレベル:
../libev/ev.c:3903:27: 警告: コメント内に "/*" があります [-Wcomment]
../libev/ev.c:3904:27: 警告: コメント内に "/*" があります [-Wcomment]
libev.c: 関数 ‘evpipe_write’ 内:
../libev/ev.c:1336:17: 警告: warn_unused_result 属性付きで宣言されている ‘write’ の戻り値を無視しています [-Wunused-result]
../libev/ev.c:1345:15: 警告: warn_unused_result 属性付きで宣言されている ‘write’ の戻り値を無視しています [-Wunused-result]
libev.c: 関数 ‘pipecb’ 内:
../libev/ev.c:1362:12: 警告: warn_unused_result 属性付きで宣言されている ‘read’ の戻り値を無視しています [-Wunused-result]
../libev/ev.c:1369:12: 警告: warn_unused_result 属性付きで宣言されている ‘read’ の戻り値を無視しています [-Wunused-result]
compiling utils.c
compiling stat_watcher.c
In file included from cool.io.h:11:0,
                 from stat_watcher.c:10:
/home/jun/.rbenv/versions/2.0.0-dev/include/ruby-2.2.0/ruby/backward/rubyio.h:2:2: 警告: #warning use "ruby/io.h" instead of "rubyio.h" [-Wcpp]
stat_watcher.c: 関数 ‘Coolio_StatWatcher_initialize’ 内:
stat_watcher.c:95:3: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
stat_watcher.c:95:3: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
stat_watcher.c:95:3: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
stat_watcher.c: 関数 ‘Coolio_StatWatcher_attach’ 内:
stat_watcher.c:115:23: 警告: 使用されない変数 ‘timeout’ です [-Wunused-variable]
stat_watcher.c:115:13: 警告: 使用されない変数 ‘interval’ です [-Wunused-variable]
stat_watcher.c: 関数 ‘Coolio_StatWatcher_dispatch_callback’ 内:
stat_watcher.c:211:3: 警告: ISO C90 は宣言とコードの混合を禁止しています [-Wdeclaration-after-statement]
compiling loop.c
In file included from loop.c:9:0:
/home/jun/.rbenv/versions/2.0.0-dev/include/ruby-2.2.0/ruby/backward/rubysig.h:14:2: 警告: #warning rubysig.h is obsolete [-Wcpp]
In file included from cool.io.h:11:0,
                 from loop.c:12:
/home/jun/.rbenv/versions/2.0.0-dev/include/ruby-2.2.0/ruby/backward/rubyio.h:2:2: 警告: #warning use "ruby/io.h" instead of "rubyio.h" [-Wcpp]
loop.c: 関数 ‘Coolio_Loop_initialize’ 内:
loop.c:92:1: 警告: 非 void を戻す関数内に return 文がありません [-Wreturn-type]
loop.c: 関数 ‘Coolio_Loop_ev_loop_oneshot’ 内:
loop.c:246:3: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
loop.c:246:3: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
loop.c:246:3: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
loop.c:246:3: 警告: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
loop.c:251:5: エラー: ‘TRAP_BEG’ が宣言されていません (この関数内での最初の使用)
loop.c:251:5: 備考: 未宣言の識別子は出現した各関数内で一回のみ報告されます
loop.c:253:5: エラー: ‘TRAP_END’ が宣言されていません (この関数内での最初の使用)
loop.c:243:18: 警告: 使用されない変数 ‘tv’ です [-Wunused-variable]
make: *** [loop.o] エラー 1

make failed, exit code 2

Gem files will remain installed in /home/jun/.rbenv/versions/2.0.0-dev/lib/ruby/gems/2.2.0/gems/cool.io-1.1.1 for inspection.
Results logged to /home/jun/.rbenv/versions/2.0.0-dev/lib/ruby/gems/2.2.0/extensions/x86-linux/2.2.0-static/cool.io-1.1.1/gem_make.out