在OS X 10.9上安裝kdtree，無法編譯本機擴展

Question

您可能會遇到編譯機器上的kdtree gem本機擴展的問題。該錯誤可能看起來有點像下面這樣：

X-MacBook-Pro:Pitot X$ sudo gem install kdtree 
Building native extensions. This could take a while... 
ERROR: Error installing kdtree: 
ERROR: Failed to build gem native extension. 

/Users/X/.rvm/rubies/ruby-1.9.3-p327/bin/ruby extconf.rb 
creating Makefile 

make 
compiling kdtree.c 
In file included from /Users/X/.rvm/rubies/ruby-1.9.3-p327/include/ruby-1.9.1/ruby.h:32, 
      from kdtree.c:1: 
/Users/X/.rvm/rubies/ruby-1.9.3-p327/include/ruby-1.9.1/ruby/ruby.h:48:21: error: string.h: No such file or directory 
/Users/X/.rvm/rubies/ruby-1.9.3-p327/include/ruby-1.9.1/ruby/ruby.h:58:21: error: stdint.h: No such file or directory 
/Users/X/.rvm/rubies/ruby-1.9.3-p327/include/ruby-1.9.1/ruby/ruby.h:61:23: error: inttypes.h: No such file or directory 
/Users/X/.rvm/rubies/ruby-1.9.3-p327/include/ruby-1.9.1/ruby/ruby.h:65:19: error: stdio.h: No such file or directory 

<snip> 

Answer 1

這可以通過固定運行：

xcode-select --install 

，然後運行：

sudo gem install kdtree 

運行捆綁了。