检查ImageMagick版本的>= 6.4.9……不可以安装RMagick 2.13.4。您必须具有ImageMagick 6.4.9或更高版本。

I have trouble installing rmagick. I am developing my project using ruby on rails framework. I included rmagick gem in my gemfile. I am getting the following error message:I have trouble installing rmagick. I am develop