We get the error when installing jekyll
[root@centos02 ~]# gem install jekyll bundler
Building native extensions. This could take a while...
ERROR: Error installing jekyll:
ERROR: Failed to build gem native extension.
/usr/bin/ruby extconf.rb
mkmf.rb can't find header files for ruby at /usr/share/include/ruby.h
Install ruby-devel to get the headers
[root@centos02 ~]# yum install ruby-devel Loaded plugins: fastestmirror, langpacks Loading mirror speeds from cached hostfile * base: centos.mirror.ndchost.com * epel: linux.mirrors.es.net * extras: mirror.san.fastserv.com * updates: linux.mirrors.es.net Resolving Dependencies --> Running transaction check ---> Package ruby-devel.x86_64 0:2.0.0.648-29.el7 will be installed --> Finished Dependency Resolution Dependencies Resolved ================================================================================ Package Arch Version Repository Size ================================================================================ Installing: ruby-devel x86_64 2.0.0.648-29.el7 base 128 k Transaction Summary ================================================================================ Install 1 Package Total download size: 128 k Installed size: 337 k Is this ok [y/d/N]: y Downloading packages: ruby-devel-2.0.0.648-29.el7.x86_64.rpm | 128 kB 00:00 Running transaction check Running transaction test Transaction test succeeded Running transaction Installing : ruby-devel-2.0.0.648-29.el7.x86_64 1/1 Verifying : ruby-devel-2.0.0.648-29.el7.x86_64 1/1 Installed: ruby-devel.x86_64 0:2.0.0.648-29.el7 Complete!