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If you try to install ruby release > 2.2.3 the rvm binaries have a builtin dependency to libgmp on MAC. So you need to resolve this before a successful installation.

You need to have a valid Xcode installation to proceed.

Download libgmp source

Get latest source files from: https://gmplib.org/#DOWNLOAD

Extract the downloaded source somewhere and cd that archive. Do the build by running:

./configure

make

make check

sudo make install

After that you should be able to run ruby and installation without an issue.

When using binaries from other sites like http://rubies.travis-ci.org/ sometime ruby won't start.

./ruby --version

and the error:

dyld: Library not loaded: /Users/travis/.rvm/rubies/ruby-2.1.0/lib/libruby.2.1.0.dylib
  Referenced from: ./ruby
  Reason: image not found
Abort trap: 6

That is often in case of missing or wrong / fixed linked dynamic libraries. To check that you may use:

otool -L ruby

The output looks like:

ruby:
        /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation (compatibility version 150.0.0, current version 1451.0.0)
        /Users/travis/.rvm/rubies/ruby-2.1.0/lib/libruby.2.1.0.dylib (compatibility version 2.1.0, current version 2.1.0)
        /usr/lib/libSystem.B.dylib (compatibility version 1.0.0, current version 1252.0.0)
        /usr/lib/libobjc.A.dylib (compatibility version 1.0.0, current version 228.0.0)

To replace such a fix link and enable relative pathes to the binary, you can use install_name_tool like:

install_name_tool -change /Users/travis/.rvm/rubies/ruby-2.1.0/lib/libruby.2.1.0.dylib @loader_path/../lib/libruby.2.1.0.dylib ruby

Now that binary can be moved elsewhere to your system according with the libraries and will work.

Not sure why people doing fix compiling but you may solve that.

https://github.com/TomFreudenberg/rvm-mini#your-projectbin - for details please read http://niczsoft.com/2013/10/please-hack-my-rails/

Not 100% save that scripts will handle spaces on path-names correctly.

When using binaries from rubis.travis-ci.org there will be a fix LOAD_PATH linking /Users/travis/.rvm/...

To prevent that from being used, the strings should be emptied by filling / patching with ZEROS

Test with perl regex 's#/Users/travis/.rvm/ruby-#\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0#g' was successfull.

When using e.g. rvm-mini and latest (current 2.2.5) rvm binaries for MAC OSX, you will get an error when gem tries to install bundler like:

bin/rvm-mini --ruby-install

Start ruby installation ...

Get ruby package for os/machine type osx/x86_64 distribution release 10.11.
load ruby binaries from: https://rvm.io/binaries/osx/10.11/x86_64/ruby-2.2.5.tar.bz2

Check bundler ... bundle seems to be not installed!
now installing ...

ERROR:  Could not find a valid gem 'bundler' (>= 0), here is why:
          Unable to download data from https://rubygems.org/ - SSL_connect returned=1 errno=0 state=error: certificate verify failed (https://api.rubygems.org/specs.4.8.gz)

I am sorry, there was an error during bundler installation. Please retry. Abort!

This happens while the packed rvm gem version is outdated due openssl libraries. For that you need to update rubygems.

Instead of doing a complicated manual or insecure rubygems update, we add the feature option --rubygems-update [2.6.7] to the installer.