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Rails 3.1, Installing capybara-webkit, Failed to create your own gem extension, what should I do?

I am trying to install capybara-webkit (0.8.0), but I get the error below, can any body help, I'm on ubuntu 11.10.

Installing capybara-webkit (0.8.0) with native extensions Gem :: Installer :: ExtensionBuildError: ERROR: Failed to create custom extension genre.

/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 do [1]: Enter the 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' 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' 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

do cd src / & && make -f Makefile.webkit_server make [1]: enter the 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' 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' 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 be installed in / home / sam / Documents / RoR / course _builder / CDPATH = / ruby โ€‹โ€‹/ 1.9.1 / gems / capybara-webkit-0.8.0 for verification. Results recorded in / home / sam / Documents / RoR / course _builder / CDPATH = / ruby โ€‹โ€‹/ 1.9.1 / gems / capybara-webkit-0.8.0 /./ gem_make.out An error occurred while installing capybara-webkit (0.8. 0) and the bundler cannot go on. Make sure gem install capybara-webkit -v '0.8.0' succeeds before binding.

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According to this log, you do not have g ++ (the gnu C ++ compiler is installed), which you will need to create your own gem extension. You will also need qt development headers

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Source: https://habr.com/ru/post/1392260/

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