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POCan't install json 1.8 gem on Mac OS X 10.8.4
 

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    <p>I'm trying to to install my rails app on a second computer. But when I run <code>bundle install</code> I get an error with the json gem:</p> <pre><code>Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension. /Users/feuerball/.rvm/rubies/ruby-2.0.0-p195/bin/ruby extconf.rb /Users/feuerball/.rvm/rubies/ruby-2.0.0-p195/bin/ruby: invalid option -D (-h will show valid options) (RuntimeError) Gem files will remain installed in /Users/feuerball/.rvm/gems/ruby-2.0.0-p195/gems/json-1.8.0 for inspection. Results logged to /Users/feuerball/.rvm/gems/ruby-2.0.0-p195/gems/json-1.8.0/ext/json/ext/generator/gem_make.out An error occurred while installing json (1.8.0), and Bundler cannot continue. Make sure that `gem install json -v '1.8.0'` succeeds before bundling. </code></pre> <p>The computer runs Mac OS X 10.8.4 with Xcode 4.6.3 and the latest command line tools.</p> <p>I installed the latest ruby using rvm:</p> <pre><code>$ rvm -v rvm 1.21.2 (stable) by Wayne E. Seguin &lt;wayneeseguin@gmail.com&gt;, Michal Papis &lt;mpapis@gmail.com&gt; [https://rvm.io/] $ ruby -v ruby 2.0.0p195 (2013-05-14 revision 40734) [x86_64-darwin12.4.0] $ gem -v 2.0.3 </code></pre> <p>When I try to install the json gem using <code>gem install json</code> I get almost the same error:</p> <pre><code>Building native extensions. This could take a while... ERROR: Error installing json: ERROR: Failed to build gem native extension. /Users/feuerball/.rvm/rubies/ruby-2.0.0-p195/bin/ruby extconf.rb /Users/feuerball/.rvm/rubies/ruby-2.0.0-p195/bin/ruby: invalid option -D (-h will show valid options) (RuntimeError) Gem files will remain installed in /Users/feuerball/.rvm/gems/ruby-2.0.0-p195/gems/json-1.8.0 for inspection. Results logged to /Users/feuerball/.rvm/gems/ruby-2.0.0-p195/gems/json-1.8.0/ext/json/ext/generator/gem_make.out </code></pre> <p>Trying to install using <code>sudo</code> does not change anything.</p> <p>I uninstalled and reinstalled homebrew, rvm, ruby &amp; the command line tools but nothing helps.</p> <p><strong>Update</strong></p> <p>Contentent of <code>/Users/feuerball/.rvm/gems/ruby-2.0.0-p195/gems/json-1.8.0/ext/json/ext/generato‌​r/gem_make.out</code>:</p> <pre><code>/Users/feuerball/.rvm/rubies/ruby-2.0.0-p195/bin/ruby extconf.rb /Users/feuerball/.rvm/rubies/ruby-2.0.0-p195/bin/ruby: invalid option -D (-h will show valid options) (RuntimeError) </code></pre> <p>GCC Version:</p> <pre><code>$ gcc -v Using built-in specs. Target: i686-apple-darwin11 Configured with: /private/var/tmp/llvmgcc42/llvmgcc42-2336.11~182/src/configure --disable-checking --enable-werror --prefix=/Applications/Xcode.app/Contents/Developer/usr/llvm-gcc-4.2 --mandir=/share/man --enable-languages=c,objc,c++,obj-c++ --program-prefix=llvm- --program-transform-name=/^[cg][^.-]*$/s/$/-4.2/ --with-slibdir=/usr/lib --build=i686-apple-darwin11 --enable-llvm=/private/var/tmp/llvmgcc42/llvmgcc42-2336.11~182/dst-llvmCore/Developer/usr/local --program-prefix=i686-apple-darwin11- --host=x86_64-apple-darwin11 --target=i686-apple-darwin11 --with-gxx-include-dir=/usr/include/c++/4.2.1 Thread model: posix gcc version 4.2.1 (Based on Apple Inc. build 5658) (LLVM build 2336.11.00) </code></pre> <p><strong>Update 2</strong></p> <p>I did a fresh install of OS X, Xcode, Command Line Tools, Homebrew, rvm and Ruby. Ruby is now patch level 247 and the damn problem is still there. What a waste of time... If it is important: rvm installed json 1.7.7 together with ruby</p> <p><strong>Update 3</strong></p> <p>Seems that my machine fails on all native extensions. <code>gem install bcrypt-ruby</code> gives the same error message.</p>
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    1. COCould you gist the contents of /Users/feuerball/.rvm/gems/ruby-2.0.0-p195/gems/json-1.8.0/ext/json/ext/generator/gem_make.out
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    2. COSince it contains only 2 lines, I inserted it into the original post.
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    3. COThis one has me at somewhat of a loss at the moment. I have exactly the same setup as you and the json gem installs without issue. rvm 1.21.2, gem 2.0.3, ruby 2.0.0p195 (2013-05-14 revision 40734) [x86_64-darwin12.3.0]. What's the output of gcc -v on your machine?
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