Я пытаюсь связать инталunf_ext -v '0.0.6' но я продолжаю получать эту ошибку:

Gem::Ext::BuildError: ERROR: Failed to build gem native extension.

checking for main() in -lstdc++... yes
checking for ruby/encoding.h... yes
creating Makefile

make "DESTDIR=" clean

make "DESTDIR="
compiling unf.cc
In file included from unf.cc:1:
In file included from ./unf/normalizer.hh:4:
In file included from /Library/Developer/CommandLineTools/usr/bin/../include/c++/v1/vector:265:
In file included from /Library/Developer/CommandLineTools/usr/bin/../include/c++/v1/__bit_reference:15:
In file included from /Library/Developer/CommandLineTools/usr/bin/../include/c++/v1/algorithm:628:
In file included from /Library/Developer/CommandLineTools/usr/bin/../include/c++/v1/memory:604:
/Library/Developer/CommandLineTools/usr/bin/../include/c++/v1/iterator:341:10: fatal error: '__debug' file not found
#include <__debug>
         ^
1 error generated.
make: *** [unf.o] Error 1

make failed, exit code 2

Я бегалgem update --system и яbrew install coreutils но я все еще получаю ту же ошибку.

Обновление: ответ
Скачано и установленоcommandlinetoolsosx10.10forxcode6.2.dmg отРазработчик Apple, Не нужно ничего удалять.