CentOS: rpmbuild-ing Vim w/ Ruby support

Recently I switched from Ubuntu 11.04 to CentOS 5.7, only to find out that CentOS’s version of vim was build sans Ruby support:

$ vim --version | grep ruby
+python +quickfix +reltime +rightleft -ruby +scrollbind +signs +smartindent

“-ruby” means that Ruby support is not available. This was an unhappy moment, as I’d been a big fan of Command-T, an excellent plugin for Vim requiring Ruby support. There are a couple of blog posts about it, but required consolidation, so here is my (mostly) repost on the solution.

The posts recommend setting up an “rpmbuild” environment for building from source, which is basically user “rpmbuild”, plus a “~/.rpmmacros” definition, plus the source RPM.

1. If “rpmbuild” already exists, the following part is not required:

# useradd rpmbuild

2. Now switch to “rpmbuild”:

# su - rpmbuild
$ vim ~/.rpmmacros

3. “.rpmmacros” is a file with the following contents:

%_topdir /home/rpmbuild/rpm
%_tmppath /home/rpmbuild/rpm/tmp

4. My build is for x86_64, so replace “$ARCH” with “x86_64”:

$ mkdir -p rpm/{BUILD,RPMS/$ARCH,RPMS/noarch,SOURCES,SRPMS,SPECS,tmp}
$ mkdir -p rpm/{BUILD,RPMS/x86_64,RPMS/noarch,SOURCES,SRPMS,SPECS,tmp}

5. Next, get the source RPM, removing the “perl-devel” dependency from “vim.spec”:

$ cd rpm/SRPMS
$ wget http://ftp.redhat.com/pub/redhat/linux/enterprise/6Server/en/os/SRPMS/vim-7.2.411-1.6.el6.src.rpm
$ cd ~
$ rpm -Uvh --nomd5 ~/rpm/SRPMS/vim-7.2.411-1.6.el6.src.rpm
$ vim rpm/SPECS/vim.spec

BuildRequires: python-devel ncurses-devel gettext perl-devel
BuildRequires: python-devel ncurses-devel gettext

6. Now we are ready to start the build process:

$ rpmbuild -bb ~/rpm/SPEC/vim.spec

7. If “rpmbuild” is not installed — mine wasn’t — use “root” to install “rpm-build” first:

# yum install -y rpm-build

8. Assuming #6 completed successfully, we can use “root” to install the built RPMs:

rpm -Uvh ~/rpm/RPMS/x86_64/vim-{m,c,e}*

References

http://m.linuxweblog.com/vim-ruby-centos
http://wiki.centos.org/HowTos/SetupRpmBuildEnvironment
http://www.lamolabs.org/blog/2662/fixing-ruby-support-in-vim-on-fedora-10-11-and-centos-5-installing-the-vim-textile-plugin/

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