Ruby RVM and installing gems

I'm not sure about the best way to manage ruby gems using rvm.
I followed the wiki guidelines for installing rvm system wide. When I install a gem using 'gem install rails' I get a file permission error for the /usr/local/rvm/gems/ruby-1.8.7-p334 directory. The rvm guidelines states DO NOT use sudo. Is it advisable to ignore this since I am using a system wide install?
Am I better off using a per user install?
I'm interested to know other arch users' experience and approach to using rvm.
Thanks,
Ed

A per-user install makes sense unless you have multiple accounts using the same machine and prevents the need to use sudo.
I use RVM daily with this setup and haven't had any problems.
If you'd prefer to go stick with the system-wide installation then ensure you're now a member of the rvm group.
The system-wide script should have added this group for you and set up permissions on the rvm directory.
These links give a more detailed explanation of what the install script actually does and how to do the same thing manually:
http://rvm.beginrescueend.com/deployment/system-wide/
http://blog.ninjahideout.com/posts/rvm- … ntegration
http://injekt.net/blog/9-rvm-plays-nice-on-production

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[SOLVED] bundle from ruby package can not install gems

Hello, I was stuck with 'bundle' for hours, I do not know anything about Ruby, and even looking at the code won't get my anywhere. kindda don't like it... (guilty). Anyway, I'm gonna post it here to save someone else's time.
What I was trying to do:
I was trying to run this command, as developing an omega sub-theme for Drupal requires this. This command will read GemFile and install all GEM dependencies.
bundle install
What happened? What's the problem?
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Fetching gem metadata from https://rubygems.org/............
Fetching additional metadata from https://rubygems.org/..
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Gem::Ext::BuildError: ERROR: Failed to build gem native extension.
/home/MY_USER/.rvm/rubies/ruby-2.1.2/bin/ruby extconf.rb
*** extconf.rb failed ***
Could not create Makefile due to some reason, probably lack of necessary
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need configuration options.
Provided configuration options:
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--without-opt-dir
--with-opt-include
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--with-make-prog
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--srcdir=.
--curdir
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--with-ffi_c-dir
--without-ffi_c-dir
--with-ffi_c-include
--without-ffi_c-include=${ffi_c-dir}/include
--with-ffi_c-lib
--without-ffi_c-lib=${ffi_c-dir}/lib
--with-libffi-config
--without-libffi-config
--with-pkg-config
--without-pkg-config
/home/MY_USER/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/mkmf.rb:456:in `try_do': The compiler failed to generate an executable file. (RuntimeError)
You have to install development tools first.
from /home/MY_USER/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/mkmf.rb:541:in `try_link0'
from /home/MY_USER/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/mkmf.rb:556:in `try_link'
from /home/MY_USER/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/mkmf.rb:642:in `block in try_ldflags'
from /home/MY_USER/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/mkmf.rb:635:in `with_ldflags'
from /home/MY_USER/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/mkmf.rb:641:in `try_ldflags'
from /home/MY_USER/.rvm/rubies/ruby-2.1.2/lib/ruby/2.1.0/mkmf.rb:1762:in `pkg_config'
from extconf.rb:15:in `<main>'
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Gem files will remain installed in /home/MY_USER/.rvm/gems/ruby-2.1.2/gems/ffi-1.9.3 for inspection.
Results logged to /home/MY_USER/.rvm/gems/ruby-2.1.2/extensions/x86_64-linux/2.1.0/ffi-1.9.3/gem_make.out
An error occurred while installing ffi (1.9.3), and Bundler cannot continue.
Make sure that `gem install ffi -v '1.9.3'` succeeds before bundling.
What was tried?
Everything: cloning eventmachine directly from github which produced same result, removing gems depending on eventmachine however other packages produced the same result, ...
The error message says: You have to install development tools first. however it was installed:
sudo pacman --needed -S base-devel
What was the problem? What's the solution then?
Well, I had previously enabled multilib in pacman.com which resulted in gcc-multilib and gcc-libs-multilib being installed however these multilib packages does NOT work, gcc and gcc-libs needs to be installed instead. I do not know what is the proper solution for having these multilib packages and compiling ruby gems? (maybe adding multilib back to pacman.conf!) but it finally worked for me.
I would create a wiki article but I don't know if it deserve's one + I'm not very good english writer + not sure if the solution is 100% right. probably this should be added to ruby page: in order to compile ruby gems you have to install gcc and gcc-libs instead of gcc-multilib and gcc-libs-multilib since multilib packages wont work because of...?
Last edited by loolooyyyy (2014-06-19 17:33:08)

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==>
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Ruby RVM and installing gems

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