我正在尝试在我的gemfile及其依赖项中安装所有gem,因此只需运行Bundler(bundle或bundle install).在使用本机扩展安装nio4r 1.1.1时失败,下面是登录gem_make.out.
/opscode/chef/embedded/bin/ruby.exe -r ./siteconf20150924-7480-ocwr34.rb extconf.rb checking for unistd.h... *** extconf.rb Failed *** Could not create Makefile due to some reason,probably lack of necessary libraries and/or headers. Check the mkmf.log file for more details. You may need configuration options. Provided configuration options: --with-opt-dir --without-opt-dir --with-opt-include --without-opt-include=${opt-dir}/include --with-opt-lib --without-opt-lib=${opt-dir}/lib --with-make-prog --without-make-prog --srcdir=. --curdir --ruby=/opscode/chef/embedded/bin/ruby /opscode/chef/embedded/lib/ruby/2.0.0/mkmf.rb:434:in `try_do': The compiler Failed to generate an executable file. (RuntimeError) You have to install development tools first. from /opscode/chef/embedded/lib/ruby/2.0.0/mkmf.rb:565:in `try_cpp' from /opscode/chef/embedded/lib/ruby/2.0.0/mkmf.rb:1038:in `block in have_header' from /opscode/chef/embedded/lib/ruby/2.0.0/mkmf.rb:889:in `block in checking_for' from /opscode/chef/embedded/lib/ruby/2.0.0/mkmf.rb:340:in `block (2 levels) in postpone' from /opscode/chef/embedded/lib/ruby/2.0.0/mkmf.rb:310:in `open' from /opscode/chef/embedded/lib/ruby/2.0.0/mkmf.rb:340:in `block in postpone' from /opscode/chef/embedded/lib/ruby/2.0.0/mkmf.rb:310:in `open' from /opscode/chef/embedded/lib/ruby/2.0.0/mkmf.rb:336:in `postpone' from /opscode/chef/embedded/lib/ruby/2.0.0/mkmf.rb:888:in `checking_for' from /opscode/chef/embedded/lib/ruby/2.0.0/mkmf.rb:1037:in `have_header' from extconf.rb:3:in `' extconf Failed,exit code 1
我可以看到捆绑器正在检查unistd.h并且在那时失败了.我确保此标头在PATH中可用,并且还为我的版本安装了ruby devkit.执行gem install nio4r也会出现同样的错误.
解决方法
尝试xcode-select – install first.This可能是xcode构建系统的问题