我尝试通过错误在mac上安装rails仍然存在
我真的很沮丧，想要一些建议
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/1.8/usr/bin/ruby extconf.rb
creating Makefile
make "DESTDIR="
xcrun cc -I. -I. - I/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib/ruby/1.8/universal- darwin12.0 -I. -D_XOPEN_SOURCE -D_DARWIN_C_SOURCE -fno-common -arch i386 -arch x86_64 -g -Os -pipe -fno-common -DENABLE_DTRACE -fno-common -pipe -fno-common -c atomic_reference.c
xcrun: Error: could not stat active Xcode path '/Developer'. (No such file or directory)
cc -arch i386 -arch x86_64 -pipe -bundle -undefined dynamic_lookup -o atomic_reference.bundle atomic_reference.o -L. - L/System/Library/Frameworks/Ruby.framework/Versions/1.8/usr/lib -L. -arch i386 -arch x86_64 -lruby -lpthread -ldl -lobjc
clang: error: no such file or directory: 'atomic_reference.o'
make: *** [atomic_reference.bundle] Error 1
Gem files will remain installed in /Library/Ruby/Gems/1.8/gems/atomic-1.1.12 for inspection.
Results logged to /Library/Ruby/Gems/1.8/gems/atomic-1.1.12/ext/gem_make.out