Saya mencoba menjalankan gem install json dan mendapatkan kesalahan berikut
Gem::Ext::BuildError: 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 /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
Saya menggunakan:
Os X: 10.9.2
Xcode: 5.1 Bangun versi 5B130a
Command Line Tools (CLT): 5.1.0.0.1.1393561416
Ruby: ruby 2.0.0p247 (2013-06-27 revisi 41674) [universal.x86_64-darwin13]
Permata Ruby: 2.2 .2
GCC: 4.2.1 Apple LLVM versi 5.1 (clang-503.0.38) (berdasarkan LLVM 3.4svn)