rails 3.1，安装capybara-webkit，无法构建gem原生扩展，该怎么办？

我想安装capybara-webkit（0.8.0），但是我得到下面的错误，任何机构可以帮助，我在Ubuntu 11.10。rails 3.1，安装capybara-webkit，无法构建gem原生扩展，该怎么办？

Installing capybara-webkit (0.8.0) with native extensions Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.
/home/sam/.rvm/rubies/ruby-1.9.3-p0/bin/ruby extconf.rb /usr/bin/qmake /usr/bin/make cd src/ && /usr/bin/qmake 
/home/sam/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/capybara-webkit-0.8.0/src/webkit_server.pro -spec /usr/share/qt4/mkspecs/linux-g++ -o Makefile.webkit_server /usr/bin/make cd src/ && make -f Makefile.webkit_server make[1]: Entering directory /home/sam/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/capybara-webkit-0.8.0/src' g++ -c -pipe -O2 -Wall -W -D_REENTRANT -DQT_WEBKIT -DQT_NO_DEBUG -DQT_WEBKIT_LIB -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -DQT_SHARED -I/usr/share/qt4/mkspecs/linux-g++ -I. -I/usr/include/qt4/QtCore -I/usr/include/qt4/QtNetwork -I/usr/include/qt4/QtGui -I/usr/include/qt4/QtWebKit -I/usr/include/qt4 -I. -o RequestedUrl.o RequestedUrl.cpp make[1]: g++: Command not found make[1]: *** [RequestedUrl.o] Error 127 make[1]: Leaving directory /home/sam/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/capybara-webkit-0.8.0/src' make: * [sub-src-webkit_server-pro-make_default-ordered] Error 2

make cd src/ && make -f Makefile.webkit_server make[1]: Entering directory /home/sam/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/capybara-webkit-0.8.0/src' g++ -c -pipe -O2 -Wall -W -D_REENTRANT -DQT_WEBKIT -DQT_NO_DEBUG -DQT_WEBKIT_LIB -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -DQT_SHARED -I/usr/share/qt4/mkspecs/linux-g++ -I. -I/usr/include/qt4/QtCore -I/usr/include/qt4/QtNetwork -I/usr/include/qt4/QtGui -I/usr/include/qt4/QtWebKit -I/usr/include/qt4 -I. -o RequestedUrl.o RequestedUrl.cpp make[1]: g++: Command not found make[1]: *** [RequestedUrl.o] Error 127 make[1]: Leaving directory /home/sam/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/capybara-webkit-0.8.0/src' make: * [sub-src-webkit_server-pro-make_default-ordered] Error 2

Gem files will remain installed in /home/sam/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/capybara-webkit-0.8.0 for inspection. Results logged to /home/sam/Documents/RoR/course_builder/CDPATH=/ruby/1.9.1/gems/capybara-webkit-0.8.0/./gem_make.out An error occured while installing capybara-webkit (0.8.0), and Bundler cannot continue. Make sure that gem install capybara-webkit -v '0.8.0' succeeds before bundling.

来源

2012-01-21 simo

根据这一记录你没有G ++（GNU的C++编译器安装），你将需要建立创业板的原生扩展。您还需要qt开发头文件

来源

2012-01-21 22:49:01

谢谢，请问我可以在哪里安装g ++？为了RoR的缘故，我来自.NET世界的unix，我仍然需要学习新的东西，非常感谢您的帮助。 – simo

我发现他的线索，我认为它接近解决方案： http://forums.opensuse.org/english/get-technical-help-here/applications/451945-bin-sh-g-command-not-在Ubuntu上found.html – simo

它看起来该软件包被称为g ++。像apt-get install g ++' –

rails 3.1，安装capybara-webkit，无法构建gem原生扩展，该怎么办？

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