I'm try to learn ruby on rails but after many tried also cannot install.I use Mac with OS: 10.9.2. Please help. Bellow is description of error when I use: sudo gem install rails. Sorry cause post many thing display into the terminal, I'm not sure which is really the root cause, so that I copy all of them. I also read the relate link on stack overflow but not help with me:
Fetching: thread_safe-0.3.3.gem (100%)
Successfully installed thread_safe-0.3.3
Fetching: tzinfo-1.1.0.gem (100%)
Successfully installed tzinfo-1.1.0
Fetching: json-1.8.1.gem (100%)
Building native extensions. This could take a while...
ERROR: Error installing rails:
ERROR: Failed to build gem native extension.
/System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby extconf.rb
creating Makefile
make "DESTDIR=" clean
make "DESTDIR=" compiling generator.c linking shared-object json/ext/generator.bundle clang: error: unknown argument: '-multiply_definedsuppress' [-Wunused-command-line-argument-hard-error-in-future] clang: note: this will be a hard error (cannot be downgraded to a warning) in the future make: *** [generator.bundle] Error 1
make failed, exit code 2
Gem files will remain installed in /Library/Ruby/Gems/2.0.0/gems/json-1.8.1 for inspection. Results logged to /Library/Ruby/Gems/2.0.0/extensions/universal-darwin-13/2.0.0/json-1.8.1/gem_make.out
