Ruby 在Ubuntu上安装proj4rb：找不到proj_api.h头

尝试在Ubuntu或Linux Mint上安装失败，出现以下错误：

Building native extensions.  This could take a while...
ERROR:  Error installing proj4rb:
    ERROR: Failed to build gem native extension.

./siteconf20161110-4168-1b7och9.rb extconf.rb
checking for proj_api.h... no
extconf.rb:6:in `<main>': Cannot find proj_api.h header (RuntimeError)

构建本机扩展。这可能需要一段时间。。。
错误：安装proj4rb时出错：
错误：无法生成gem本机扩展。
./siteconf20161110-4168-1b7och9.rb extconf.rb
正在检查项目api.h。。。不
extconf.rb:6:in`：找不到proj_api.h头（RuntimeError）

不清楚需要哪些软件包，我也找不到stackoverflow的相关帖子。

只需安装软件包：

sudo aptitude install libproj-dev
gem install proj4rb

# Building native extensions.  This could take a while...
# Successfully installed proj4rb-1.0.0