Can't Install Ruby Under Lion With Rvm - Gcc Issues

Can't install Ruby under Lion with RVM – GCC issues

This answer was edited multiple times and now contains several alternative solutions. Try the simple “Edit 3” solution first.

Ruby 1.9.3-p125 and later have official support for clang, so if you are installing such a version you should not need GCC. If you’re installing an older version of Ruby, read on.

To compile Ruby with GCC, you need a non-LLVM version of GCC, which is no longer included with Xcode 4.2. Install it yourself (or downgrade to Xcode 4.1 temporarily), then do CC=/usr/local/bin/gcc-4.2 rvm install 1.9.3 --enable-shared (substituting the path to your non-LLVM gcc).

Edit: may help for installing GCC. There is also some info available by running rvm requirements.

Edit 2: For an easier solution, you can try adding --with-gcc=clang to the arguments to configure for Ruby to use clang instead of GCC.

Edit 3: rvm install 1.9.3 --with-gcc=clang does that for you.

Note: With current versions of Xcode you need to install the command-line tools separately from the Xcode menu -> Preferences -> Downloads -> Components. This is a pre-requisite for doing any compiling with Xcode on the command-line, not just Ruby.

Note 2: If something doesn't work after following the steps, try doing a reboot or re-login to ensure that the environment gets set correctly.

Note 3: Ruby versions prior to 1.9.3-p125 may not always be fully compatible with clang, so test your software thoroughly if using the “edit 3” solution in a production environment.

Lion ate my RVM and now I can't install Ruby

After you install Lion, you have to re-install Xcode/Developer tools. It is available from the app store.

Can't install Ruby 1.9.3 via rvm in OS X Lion even with --with-gcc=clang

This should solve it:

rvm get head
rvm install 1.9.3 --autolibs=4

Can't install Ruby Enterprise Edition with RVM on OSX Lion

I was able to duplicate your error, just now. This solved it for me:

$ rvm remove ree

$ export CC=/usr/bin/gcc-4.2

$ rvm install --force ree

Install Ruby with Mountain Lion, Xcode 4.5, and RVM?

no, ruby is not fully compatible with llvm, there is at least one issue with Fibers and other issues might occur if version of llvm changes.

Ruby works best with gcc-4.2, rvm provides information how to get it (+other important stuff):

rvm requirements

Make error installing Ruby 1.9.2 with RVM and Readline under OSX Lion

I had a very similar issue. I eventually found that adding this to my .bash_profile stopped my initial make errors:

export ARCHFLAGS="-arch x86_64"

Also from the command line run the following:

brew install readline
brew link readline
brew install libxml2
brew link libxml2

Then when you install ruby use this command:

rvm install 1.9.2 -C --with-readline-dir=/usr/local/Cellar/readline/6.2.1/ --with-libxml2-dir=/usr/local/Cellar/xml2/2.7.8

Hope that helps

RVM not able to install different versions of Ruby

Looks like you need to install Xcode Command Line tools, so you can compile RVM on installation. I believe just installing Xcode will do it.

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