升级到Mountain Lion后,我遇到了很多关于Rails的麻烦.
到目前为止,我试图在互联网上搜索这些并搜索几个小时,以确保我的系统具有升级后运行rails的所有依赖关系：
>我更新了我的Homebrew安装
>我更新了我的RVM安装
>我安装了XCode命令行工具
>我安装了GCC as mentioned
>我将我的Ruby版本升级为
ruby 1.9.2p290 (2011-07-09 revision 32553) [x86_64-darwin10.8.0]
>我的Rails版本被验证为Rails 3.2.6
>我还发现Mountain Lion与Postgres有一些问题,所以我看到了this post,发现我需要将这一行添加到我的Bash配置文件中：
export PATH="/usr/local/bin:/usr/bin:$PATH"
现在我转到我升级之前在Snow Leopard上运行正常的Rails应用程序,当我在命令行运行rails时,我收到以下错误：
AM@~/Documents/RailsWS/app0815 >gem install pg Building native extensions. This could take a while... ERROR: Error installing pg: ERROR: Failed to build gem native extension. /Users/AM/.rvm/rubies/ruby-1.9.2-p290/bin/ruby extconf.rb checking for pg_config... yes Using config values from /usr/bin/pg_config checking for libpq-fe.h... *** extconf.rb Failed *** Could not create Makefile due to some reason,probably lack of necessary libraries and/or headers. Check the mkmf.log file for more details. You may need configuration options. Provided configuration options: --with-opt-dir --with-opt-include --without-opt-include=${opt-dir}/include --with-opt-lib --without-opt-lib=${opt-dir}/lib --with-make-prog --without-make-prog --srcdir=. --curdir --ruby=/Users/AM/.rvm/rubies/ruby-1.9.2-p290/bin/ruby --with-pg --without-pg --with-pg-dir --without-pg-dir --with-pg-include --without-pg-include=${pg-dir}/include --with-pg-lib --without-pg-lib=${pg-dir}/lib --with-pg-config --without-pg-config --with-pg_config --without-pg_config /Users/AM/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/mkmf.rb:368:in `try_do': The complier Failed to generate an executable file. (RuntimeError) You have to install development tools first. from /Users/AM/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/mkmf.rb:452:in `try_cpp' from /Users/AM/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/mkmf.rb:853:in `block in find_header' from /Users/AM/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/mkmf.rb:693:in `block in checking_for' from /Users/AM/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/mkmf.rb:280:in `block (2 levels) in postpone' from /Users/AM/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/mkmf.rb:254:in `open' from /Users/AM/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/mkmf.rb:280:in `block in postpone' from /Users/AM/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/mkmf.rb:254:in `open' from /Users/AM/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/mkmf.rb:276:in `postpone' from /Users/AM/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/mkmf.rb:692:in `checking_for' from /Users/AM/.rvm/rubies/ruby-1.9.2-p290/lib/ruby/1.9.1/mkmf.rb:852:in `find_header' from extconf.rb:41:in `<main>' Gem files will remain installed in /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/pg-0.14.1 for inspection. Results logged to /Users/AM/.rvm/gems/ruby-1.9.2-p290/gems/pg-0.14.1/ext/gem_make.out
当我转到Rails应用程序并尝试捆绑安装时,它在pg安装时失败.
解决方法
从
http://www.enterprisedb.com/products-services-training/pgdownload#osx下载postgressql安装程序
然后让你的路径看起来像这样：
PATH=$PATH:/Library/Postgresql/9.0/bin/ gem install pg
这样做！
注意：请在路径中正确指定postgresql安装版本.
更新(2015年11月10日)(摘自Heroku)
在OS X上使用Homebrew：
>使用以下命令安装postgresql：
brew安装postgresql
>然后使用以下命令安装gem：
gem install pg – –with-pg-config = /usr/local / bin / pg_config
在OS X上使用MacPorts：
gem install pg – –with-pg-config = / opt / local / lib / postgresql84 / bin / pg_config
希望这可以帮助！