Capybara-Webkit失败

Question

经过多次查看，即使是在StackOverflow上，我似乎仍然无法安装Capybara gem来完成我的Ruby on Rails项目，以下是我在运行时收到的错误消息

gem install capybara-webkit 

我得到的错误是

current directory: /Users/montana/.rvm/gems/ruby-2.4.1/gems/capybara-webkit-1.14.0
/Users/montana/.rvm/rubies/ruby-2.4.1/bin/ruby -r ./siteconf20171019-31585-1203ped.rb extconf.rb
Project ERROR: Xcode not set up properly. You may need to confirm the license agreement by running /usr/bin/xcodebuild.
*** 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
    --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=/Users/montana/.rvm/rubies/ruby-2.4.1/bin/$(RUBY_BASE_NAME)
    --with-gl-dir
    --without-gl-dir
    --with-gl-include
    --without-gl-include=${gl-dir}/include
    --with-gl-lib
    --without-gl-lib=${gl-dir}/lib
    --with-zlib-dir
    --without-zlib-dir
    --with-zlib-include
    --without-zlib-include=${zlib-dir}/include
    --with-zlib-lib
    --without-zlib-lib=${zlib-dir}/lib
Command 'qmake LIBS\ \+\=\ -L/usr/local/opt/libyaml/lib\ -L/usr/local/opt/readline/lib\ -L/usr/local/opt/libksba/lib\ -L/usr/local/opt/openssl@1.1/lib' failed

extconf failed, exit code 1

Gem files will remain installed in /Users/montana/.rvm/gems/ruby-2.4.1/gems/capybara-webkit-1.14.0 for inspection.
Results logged to /Users/montana/.rvm/gems/ruby-2.4.1/extensions/x86_64-darwin-17/2.4.0/capybara-webkit-1.14.0/gem_make.out

任何帮助都非常感谢，一如既往地，干杯，快乐的编码！

Answer 1

Capybara-webkit需要一些本机扩展，并使用编译器来构建它们。

您使用的是OS X，因此在使用以下编译器之前必须接受Xcode许可协议：

sudo xcodebuild -license accept