我正在尝试部署使用特定gem的rails应用程序，但我无法成功构建它：
[git@Porta-Git ~]$ gem install charlock_holmes --version '0.6.9.4'
Building native extensions. This could take a while...
ERROR: Error installing charlock_holmes:
ERROR: Failed to build gem native extension.
/usr/local/bin/ruby extconf.rb
checking for main() in -licui18n... yes
checking for main() in -licui18n... yes
checking for unicode/ucnv.h... yes
-- tar zxvf file-5.08.tar.gz
-- ./configure --prefix=/usr/local/lib/ruby/gems/2.0.0/gems/charlock_holmes-0.6.9.4/ext/charlock_holmes/dst/ --disable-shared --enable-static --with-pic
-- patch -p0 ’ token
transliterator.cpp:108: error: ‘sink’ was not declared in this scope
transliterator.cpp:109: error: ‘class icu_3_6::UnicodeString’ has no member named ‘toUTF8’
make: *** [transliterator.o] Error 1
make failed, exit code 2
Gem files will remain installed in /usr/local/lib/ruby/gems/2.0.0/gems/charlock_holmes-0.6.9.4 for inspection.
Results logged to /usr/local/lib/ruby/gems/2.0.0/extensions/x86_64-linux/2.0.0-static/charlock_holmes-0.6.9.4/gem_make.out
有什么建议吗？