RubyGemInstallJson在小牛和Xcode 5.1上失败-未知参数:‘-乘_定义抑制’
Gem::Ext::BuildError: ERROR: Failed to build gem native extension. /System/Library/Frameworks/Ruby.framework/Versions/2.0/usr/bin/ruby extconf.rb creating Makefilemake "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 1make failed, exit code 2Gem files will remain installed in /opt/boxen/repo/.bundle/ruby/2.0.0/ gems/json-1.8.0 for inspection.Results logged to /opt/boxen/repo/.bundle/ruby/2.0.0/extensions/universal-darwin-13/2.0.0/json-1.8.0 /gem_make.out
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