我正在运行 OSX 10.7 (Lion)，最近卸载了 MacPorts，因为 MySQL 无法启动。MySQL（64 位）现在正在启动，但现在我无法安装 MySQL gem (Rails)。我试过使用with-mysql-config和ARCHFLAGS选项，都没有奏效。我尝试重新安装 Ruby 1.9.3，这也没有改变任何东西。在我认为 MySQL 5.0.95 可能会导致问题之后，我目前正在运行 MySQL 5.1.61。这是回溯：
Christy$ gem install mysql2
Building native extensions. This could take a while...
ERROR: Error installing mysql2:
ERROR: Failed to build gem native extension.
/Users/Christy/.rvm/rubies/ruby-1.9.3-p0/bin/ruby extconf.rb
checking for rb_thread_blocking_region()... yes
checking for rb_wait_for_single_fd()... yes
checking for mysql.h... yes
checking for errmsg.h... yes
checking for mysqld_error.h... yes
creating Makefile
make
compiling client.c
client.c: In function ‘rb_raise_mysql2_error’:
client.c:98: warning: ISO C90 …我正在运行Ubuntu 11.10服务器并成功安装了Phusion Passenger.我尝试启动它时遇到以下错误:
christy@beast0:/$ passenger status
Phusion Passenger Standalone is not running, according to PID file /passenger.3000.pid
christy@beast0:/$ passenger start
Stopping web server.../home/christy/.rbenv/versions/1.9.3-p0/lib/ruby/gems/1.9.1/gems/daemon_controller-0.2.6/lib/daemon_controller/lock_file.rb:63:in `initialize': Permission denied - /passenger.3000.pid.lock (Errno::EACCES)
from /home/christy/.rbenv/versions/1.9.3-p0/lib/ruby/gems/1.9.1/gems/daemon_controller-0.2.6/lib/daemon_controller/lock_file.rb:63:in `open'
from /home/christy/.rbenv/versions/1.9.3-p0/lib/ruby/gems/1.9.1/gems/daemon_controller-0.2.6/lib/daemon_controller/lock_file.rb:63:in `exclusive_lock'
from /home/christy/.rbenv/versions/1.9.3-p0/lib/ruby/gems/1.9.1/gems/daemon_controller-0.2.6/lib/daemon_controller.rb:269:in `stop'
from /home/christy/.rbenv/versions/1.9.3-p0/lib/ruby/gems/1.9.1/gems/passenger-3.0.11/lib/phusion_passenger/standalone/start_command.rb:466:in `block in stop_nginx'
from <internal:prelude>:10:in `synchronize'
from /home/christy/.rbenv/versions/1.9.3-p0/lib/ruby/gems/1.9.1/gems/passenger-3.0.11/lib/phusion_passenger/standalone/start_command.rb:463:in `stop_nginx'
from /home/christy/.rbenv/versions/1.9.3-p0/lib/ruby/gems/1.9.1/gems/passenger-3.0.11/lib/phusion_passenger/standalone/start_command.rb:94:in `rescue in run'
from /home/christy/.rbenv/versions/1.9.3-p0/lib/ruby/gems/1.9.1/gems/passenger-3.0.11/lib/phusion_passenger/standalone/start_command.rb:98:in `run'
from /home/christy/.rbenv/versions/1.9.3-p0/lib/ruby/gems/1.9.1/gems/passenger-3.0.11/lib/phusion_passenger/standalone/main.rb:93:in `block in run_command'
from /home/christy/.rbenv/versions/1.9.3-p0/lib/ruby/gems/1.9.1/gems/passenger-3.0.11/lib/phusion_passenger/standalone/main.rb:48:in `block in each_command'
from /home/christy/.rbenv/versions/1.9.3-p0/lib/ruby/gems/1.9.1/gems/passenger-3.0.11/lib/phusion_passenger/standalone/main.rb:43:in `each'
from /home/christy/.rbenv/versions/1.9.3-p0/lib/ruby/gems/1.9.1/gems/passenger-3.0.11/lib/phusion_passenger/standalone/main.rb:43:in `each_command'
from /home/christy/.rbenv/versions/1.9.3-p0/lib/ruby/gems/1.9.1/gems/passenger-3.0.11/lib/phusion_passenger/standalone/main.rb:91:in `run_command'
from /home/christy/.rbenv/versions/1.9.3-p0/lib/ruby/gems/1.9.1/gems/passenger-3.0.11/lib/phusion_passenger/standalone/main.rb:62:in `run!'
from …