在 Windows 上的导轨上安装 postgres gem 时发生错误

Question

我正在学习在 Windows 8.1 上使用 ruby​​ on rails。当我不得不安装 pg(postgres) gem 时我被卡住了。具体来说，这是错误：

错误：安装 pg 时出错：

   Error: failed to build gem natve extension
   C:/Rails Installer/Ruby2.1.0/bin/ruby.exe extconf.rb
  checking for pg_config... no
No pg_confg... trying anyway. If build fails, please try again with --with-pg-config=/path/to/pg_config
checking for libpq-fe.h... no
can't find the 'libpq-fe.h header
*** 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.

我被卡住了，任何建议都会有所帮助。谢谢

Answer 1

尝试使用 Windows 命令行工具确定pg_config 所在的位置（来源：https://superuser.com/questions/49104/how-do-i-find-the-location-of-an-executable-in-windows）：

where pg_config

复制返回的路径并使用它

bundle config build.pg --with-pg-config=/path/found/for/pg_config

（基于ERROR: Failed to build gem native extension on Mavericks）