Ruby Gem install Json fails on Mavericks and Xcode 5.1 - unknown argument: '-multiply_definedsuppress'

Question

I was trying run gem install json and got the following error

Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

    /System/Library/Framewo         


        

Answer 1

Issue already addressed by Ruby:

https://bugs.ruby-lang.org/issues/9624

now we just need to wait for Apple to update their ruby version (2.0.0p247) to the one after the latest one (2.0.0p451) which hasn't come out yet ... (or brew/macport it)

Update (2014-05-15): Mavericks 10.9.3 updates ruby to ruby 2.0.0p451 (2014-02-24 revision 45167) [universal.x86_64-darwin13] And this seems to resolves the issue.