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上的rails上使用ruby。当我必须安装pg（postgres）gem时，我卡住了。具体而言，这是错误：

错误：错误安装PG：

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. 

我坚持，任何的建议将帮助。由于

Answer 1

试图找出其中pg_config使用Windows命令行工具位于（来源：https://superuser.com/questions/49104/how-do-i-find-the-location-of-an-executable-in-windows）：

where pg_config 

复制的路径返回，并用它

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

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