ruby - 无法在 OSX 上安装 gem mysql

Question

我无法在我的 10.8 (mac osx) 机器上安装 mysql gem。我用自制软件安装了 mysql

$brew 安装 mysql

然后我做:

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

        /Users/marcinkrzyzanowski/.rvm/rubies/ruby-1.9.3-head/bin/ruby extconf.rb
checking for mysql_ssl_set()... *** 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=/Users/marcinkrzyzanowski/.rvm/rubies/ruby-1.9.3-head/bin/ruby
    --with-mysql-config
    --without-mysql-config
/Users/marcinkrzyzanowski/.rvm/rubies/ruby-1.9.3-head/lib/ruby/1.9.1/mkmf.rb:381:in `try_do': The compiler failed to generate an executable file. (RuntimeError)
You have to install development tools first.
    from /Users/marcinkrzyzanowski/.rvm/rubies/ruby-1.9.3-head/lib/ruby/1.9.1/mkmf.rb:461:in `try_link0'
    from /Users/marcinkrzyzanowski/.rvm/rubies/ruby-1.9.3-head/lib/ruby/1.9.1/mkmf.rb:476:in `try_link'
    from /Users/marcinkrzyzanowski/.rvm/rubies/ruby-1.9.3-head/lib/ruby/1.9.1/mkmf.rb:619:in `try_func'
    from /Users/marcinkrzyzanowski/.rvm/rubies/ruby-1.9.3-head/lib/ruby/1.9.1/mkmf.rb:894:in `block in have_func'
    from /Users/marcinkrzyzanowski/.rvm/rubies/ruby-1.9.3-head/lib/ruby/1.9.1/mkmf.rb:790:in `block in checking_for'
    from /Users/marcinkrzyzanowski/.rvm/rubies/ruby-1.9.3-head/lib/ruby/1.9.1/mkmf.rb:284:in `block (2 levels) in postpone'
    from /Users/marcinkrzyzanowski/.rvm/rubies/ruby-1.9.3-head/lib/ruby/1.9.1/mkmf.rb:254:in `open'
    from /Users/marcinkrzyzanowski/.rvm/rubies/ruby-1.9.3-head/lib/ruby/1.9.1/mkmf.rb:284:in `block in postpone'
    from /Users/marcinkrzyzanowski/.rvm/rubies/ruby-1.9.3-head/lib/ruby/1.9.1/mkmf.rb:254:in `open'
    from /Users/marcinkrzyzanowski/.rvm/rubies/ruby-1.9.3-head/lib/ruby/1.9.1/mkmf.rb:280:in `postpone'
    from /Users/marcinkrzyzanowski/.rvm/rubies/ruby-1.9.3-head/lib/ruby/1.9.1/mkmf.rb:789:in `checking_for'
    from /Users/marcinkrzyzanowski/.rvm/rubies/ruby-1.9.3-head/lib/ruby/1.9.1/mkmf.rb:893:in `have_func'
    from extconf.rb:50:in `<main>'


Gem files will remain installed in /Users/marcinkrzyzanowski/.rvm/gems/ruby-1.9.3-head/gems/mysql-2.8.1 for inspection.
Results logged to /Users/marcinkrzyzanowski/.rvm/gems/ruby-1.9.3-head/gems/mysql-2.8.1/ext/mysql_api/gem_make.out

知道要做什么吗？

Answer 1

升级到 Mountain Lion 之前是否安装了 mysql？我有同样的问题，这解决了它:

brew uninstall mysql
brew install mysql
gem install mysql