マウンテン ライオンに Ruby 用の Google-api-client をインストールしようとすると、localmemcache gem が原因で失敗します (私が思うに)。
Building native extensions. This could take a while...
ERROR: Error installing localmemcache:
ERROR: Failed to build gem native extension.
sh ./configure --prefix=/Users/rental/.rvm/gems/ruby-1.9.3-p125/gems/localmemcache-0.4.4/src/ruby-binding
checking for gcc... gcc
checking for C compiler default output file name... a.out
checking whether the C compiler works... yes
checking whether we are cross compiling... no
checking for suffix of executables...
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ISO C89... none needed
checking for ranlib... ranlib
checking for apple OS X...
-> Apple OS X is not supported because it doesn't have
sem_getvalue and sem_timedwait!
You may set the environment variable LMC_FORCE_BUILD
to build a version of localmemcache that cannot recover
from crashes.
重要な注意: これは --development でインストールした場合に発生します:
sudo gem install google-api-client --development --force --no-rdoc --no-ri