所以我在 Fedora 17 上尝试安装 Capybara Webkit。我按照此处的说明为该项目的另一个（几乎相同）分支进行了捆绑安装，所以我知道它可以工作。
当我尝试时bundle install，它有这个错误。任何人都有想法，还是我应该用 co 记录一个错误？
Installing capybara-webkit (0.12.1)
Gem::Installer::ExtensionBuildError: ERROR: Failed to build gem native extension.
-- SNIP --
g++ -c -pipe -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fstack-protector --param=ssp-buffer-size=4 -m32 -march=i686 -mtune=atom -fasynchronous-unwind-tables -O2 -Wall -W -D_REENTRANT -DQT_NO_DEBUG -DQT_WEBKIT_LIB -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -DQT_SHARED -I/usr/lib/qt4/mkspecs/linux-g++ -I. -I/usr/include/QtCore -I/usr/include/QtNetwork -I/usr/include/QtGui -I/usr/include/QtWebKit -I/usr/include -I. -o WebPage.o
WebPage.cpp
WebPage.cpp: In member function ‘bool WebPage::render(const QString&)’:
WebPage.cpp:148:3: error: ‘QFileInfo’ was not declared in this scope
WebPage.cpp:148:13: error: expected ‘;’ before ‘fileInfo’
WebPage.cpp:149:3: error: ‘QDir’ was not declared in this scope
WebPage.cpp:149:8: error: expected ‘;’ before ‘dir’
WebPage.cpp:150:3: error: ‘dir’ was not declared in this scope
WebPage.cpp:150:14: error: ‘fileInfo’ was not declared in this scope
make[1]: *** [WebPage.o] Error 1
make[1]: Leaving directory `/usr/local/rvm/gems/ruby-1.9.3-p286/gems/capybara-webkit-0.12.1/src'
make: *** [sub-src-webkit_server-pro-make_default-ordered] Error 2
make
cd src/ && make -f Makefile.webkit_server
make[1]: Entering directory `/usr/local/rvm/gems/ruby-1.9.3-p286/gems/capybara-webkit-0.12.1/src'
g++ -c -pipe -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fstack-protector --param=ssp-buffer-size=4 -m32 -march=i686 -mtune=atom -fasynchronous-unwind-tables -O2 -Wall -W -D_REENTRANT -DQT_NO_DEBUG -DQT_WEBKIT_LIB -DQT_GUI_LIB -DQT_NETWORK_LIB -DQT_CORE_LIB -DQT_SHARED -I/usr/lib/qt4/mkspecs/linux-g++ -I. -I/usr/include/QtCore -I/usr/include/QtNetwork -I/usr/include/QtGui -I/usr/include/QtWebKit -I/usr/include -I. -o WebPage.o WebPage.cpp
WebPage.cpp: In member function ‘bool WebPage::render(const QString&)’:
WebPage.cpp:148:3: error: ‘QFileInfo’ was not declared in this scope
WebPage.cpp:148:13: error: expected ‘;’ before ‘fileInfo’
WebPage.cpp:149:3: error: ‘QDir’ was not declared in this scope
WebPage.cpp:149:8: error: expected ‘;’ before ‘dir’
WebPage.cpp:150:3: error: ‘dir’ was not declared in this scope
WebPage.cpp:150:14: error: ‘fileInfo’ was not declared in this scope
make[1]: *** [WebPage.o] Error 1
make[1]: Leaving directory `/usr/local/rvm/gems/ruby-1.9.3-p286/gems/capybara-webkit-0.12.1/src'
make: *** [sub-src-webkit_server-pro-make_default-ordered] Error 2
Gem files will remain installed in /usr/local/rvm/gems/ruby-1.9.3-p286/gems/capybara-webkit-0.12.1 for inspection.
Results logged to /usr/local/rvm/gems/ruby-1.9.3-p286/gems/capybara-webkit-0.12.1/./gem_make.out
安装 capybara-webkit (0.12.1) 时出错，Bundler 无法继续。gem install capybara-webkit -v '0.12.1'在捆绑之前
确保成功。