add re2-devel in yum install
Packages necessary for operation are not enough.
After installing the package at https://gitlab.com/gitlab-org/gitlab-development-kit/blob/master/doc/prepare.md#centos, an error occurred in later gdk install.
It is necessary to add re2-devel to yum install package.
Environment
CentOS Linux release 7.2.1511 (Core)