gem pg 没有安装

Question

所以我不得不在我的电脑崩溃后重新初始化一个项目，并且正在 ruby 上重新安装我所有的 gem。不幸的是，当我运行捆绑安装时出现以下错误。

Building native extensions.  This could take a while...
ERROR:  Error installing pg:
    ERROR: Failed to build gem native extension.

current directory: /usr/lib/ruby/gems/2.3.0/gems/pg-0.21.0/ext
/usr/bin/ruby2.3 -r ./siteconf20170925-462-dsymf.rb extconf.rb
mkmf.rb can't find header files for ruby at /usr/lib/ruby/include/ruby.h

extconf failed, exit code 1

Gem files will remain installed in /usr/lib/ruby/gems/2.3.0/gems/pg-0.21.0 
for inspection.
Results logged to /usr/lib/ruby/gems/2.3.0/extensions/x86_64-linux/2.3.0/pg-
0.21.0/gem_make.out

如果有人能给我指出正确的方向，将不胜感激。

Answer 1

试试这个

 sudo sh -c "echo 'deb http://apt.postgresql.org/pub/repos/apt/ xenial-pgdg main' > /etc/apt/sources.list.d/pgdg.list"
 wget --quiet -O - http://apt.postgresql.org/pub/repos/apt/ACCC4CF8.asc | sudo apt-key add -
 sudo apt-get update
 sudo apt-get install postgresql-common
 sudo apt-get install postgresql-9.5 libpq-dev

gem 安装 pg

gem pg 没有安装

gem pg not installing

ruby

rubygems

ruby-on-rails

bundler