我刚刚使用 RVM 将我的应用程序从 1.8.7 升级到 1.9.2，并且必须添加 RubyGems 和 Bundler，运行捆绑安装并让除 SystemTimer 之外的所有内容正常工作。 Google-fu 没有返回任何内容，我看到其他人在 1.9 中遇到了问题，但有些人已经让它工作了。有任何想法吗？
pawel:bodb pawel$ sudo gem install SystemTimer
Building native extensions. This could take a while...
/Users/pawel/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/site_ruby/1.9.1/rubygems/ext/builder.rb:48: warning: Insecure world writable dir /usr/local/bin in PATH, mode 040777
ERROR: Error installing SystemTimer:
ERROR: Failed to build gem native extension.
/Users/pawel/.rvm/rubies/ruby-1.9.2-p290/bin/ruby extconf.rb
creating Makefile
make
/usr/bin/gcc-4.2 -I. -I/Users/pawel/.rvm/rubies/ruby-1.9.2-p290/include/ruby-1.9.1/x86_64-darwin10.3.0
-I/Users/pawel/.rvm/rubies/ruby-1.9.2-p290/include/ruby-1.9.1/ruby/backward -I/Users/pawel/.rvm/rubies/ruby-1.9.2-p290/include/ruby-1.9.1 -I.
-D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -fno-common -O3 -ggdb -Wextra -Wno-unused-parameter -Wno-parentheses -Wpointer-arith -Wwrite-strings -Wno-missing-field-initializers
-Wshorten-64-to-32 -Wno-long-long -fno-common -pipe -o system_timer_native.o -c system_timer_native.c
In file included from system_timer_native.c:8:
/Users/pawel/.rvm/rubies/ruby-1.9.2-p290/include/ruby-1.9.1/ruby/backward/rubysig.h:14:2: warning: #warning rubysig.h is obsolete
system_timer_native.c: In function ‘install_first_timer_and_save_original_configuration’:
system_timer_native.c:46: warning: passing argument 1 of ‘log_debug’ discards qualifiers from pointer target type
system_timer_native.c:53: warning: passing argument 1 of ‘log_error’ discards qualifiers from pointer target type
system_timer_native.c:57: warning: passing argument 1 of ‘log_debug’ discards qualifiers from pointer target type
system_timer_native.c:62: warning: passing argument 1 of ‘log_debug’ discards qualifiers from pointer target type
system_timer_native.c:65: warning: passing argument 1 of ‘log_error’ discards qualifiers from pointer target type
system_timer_native.c:69: warning: passing argument 1 of ‘log_debug’ discards qualifiers from pointer target type
system_timer_native.c:82: warning: passing argument 1 of ‘log_error’ discards qualifiers from pointer target type
system_timer_native.c:89: warning: passing argument 1 of ‘log_debug’ discards qualifiers from pointer target type
system_timer_native.c:96: warning: passing argument 1 of ‘log_error’ discards qualifiers from pointer target type
system_timer_native.c:101: warning: passing argument 1 of ‘log_debug’ discards qualifiers from pointer target type
system_timer_native.c: In function ‘install_next_timer’:
system_timer_native.c:112: warning: passing argument 1 of ‘log_debug’ discards qualifiers from pointer target type
system_timer_native.c:119: warning: passing argument 1 of ‘log_error’ discards qualifiers from pointer target type
system_timer_native.c:123: warning: passing argument 1 of ‘log_debug’ discards qualifiers from pointer target type
system_timer_native.c:130: warning: passing argument 1 of ‘log_error’ discards qualifiers from pointer target type
system_timer_native.c:136: warning: passing argument 1 of ‘log_debug’ discards qualifiers from pointer target type
system_timer_native.c:143: warning: passing argument 1 of ‘log_error’ discards qualifiers from pointer target type
system_timer_native.c:146: warning: passing argument 1 of ‘log_debug’ discards qualifiers from pointer target type
system_timer_native.c: In function ‘restore_original_configuration’:
system_timer_native.c:157: warning: passing argument 1 of ‘log_error’ discards qualifiers from pointer target type
system_timer_native.c:160: warning: passing argument 1 of ‘log_debug’ discards qualifiers from pointer target type
system_timer_native.c:168: warning: passing argument 1 of ‘log_error’ discards qualifiers from pointer target type
system_timer_native.c:170: warning: passing argument 1 of ‘log_debug’ discards qualifiers from pointer target type
system_timer_native.c:172: warning: passing argument 1 of ‘log_error’ discards qualifiers from pointer target type
system_timer_native.c: In function ‘restore_original_timer_interval’:
system_timer_native.c:190: warning: passing argument 1 of ‘log_error’ discards qualifiers from pointer target type
system_timer_native.c:192: warning: passing argument 1 of ‘log_debug’ discards qualifiers from pointer target type
system_timer_native.c: In function ‘restore_sigalrm_mask’:
system_timer_native.c:199: warning: passing argument 1 of ‘log_debug’ discards qualifiers from pointer target type
system_timer_native.c:201: warning: passing argument 1 of ‘log_debug’ discards qualifiers from pointer target type
system_timer_native.c: In function ‘install_ruby_sigalrm_handler’:
system_timer_native.c:211: error: ‘rb_thread_critical’ undeclared (first use in this function)
system_timer_native.c:211: error: (Each undeclared identifier is reported only once
system_timer_native.c:211: error: for each function it appears in.)
system_timer_native.c: In function ‘restore_original_ruby_sigalrm_handler’:
system_timer_native.c:217: error: ‘rb_thread_critical’ undeclared (first use in this function)
system_timer_native.c: In function ‘clear_pending_sigalrm_for_ruby_threads’:
system_timer_native.c:266: warning: passing argument 1 of ‘log_debug’ discards qualifiers from pointer target type
system_timer_native.c: In function ‘set_itimerval’:
system_timer_native.c:290: warning: passing argument 1 of ‘log_debug’ discards qualifiers from pointer target type
system_timer_native.c:295: warning: implicit conversion shortens 64-bit value into a 32-bit value
system_timer_native.c:299: warning: passing argument 1 of ‘log_debug’ discards qualifiers from pointer target type
make: *** [system_timer_native.o] Error 1
Gem files will remain installed in /Users/pawel/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/gems/1.9.1/gems/SystemTimer-1.2.3 for inspection.
Results logged to /Users/pawel/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/gems/1.9.1/gems/SystemTimer-1.2.3/ext/system_timer/gem_make.out
据我所知，SystemTimer 与 ruby 1.9 无关，不应该与此版本一起使用。
“在 Ruby 1.9 中使用这个 gem 是无用的，没有任何意义！系统计时器正在尝试解决 Ruby 1.8 (MRI) 中使用的“绿色线程”模型的一些限制。请参阅http://ph7spot.com/musings/system-timer http://ph7spot.com/musings/system-timer更多细节。”
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