In file included from http://www.cnblogs.com/include/QtGui/private/qt_x11_p.h:1,
from mainwindow.cpp:74:
http://www.cnblogs.com/include/QtGui/private/http://www.cnblogs.com/../src/gui/kernel/qt_x11_p.h:69:22: error: X11/Xlib.h: No such file or directory
http://www.cnblogs.com/include/QtGui/private/http://www.cnblogs.com/../src/gui/kernel/qt_x11_p.h:74:23: error: X11/Xutil.h: No such file or directory
http://www.cnblogs.com/include/QtGui/private/http://www.cnblogs.com/../src/gui/kernel/qt_x11_p.h:75:21: error: X11/Xos.h: No such file or directory
http://www.cnblogs.com/include/QtGui/private/http://www.cnblogs.com/../src/gui/kernel/qt_x11_p.h:82:23: error: X11/Xatom.h: No such file or directory
http://www.cnblogs.com/include/QtGui/private/http://www.cnblogs.com/../src/gui/kernel/qt_x11_p.h:89:36: error: X11/extensions/shape.h: No such file or directory
http://www.cnblogs.com/include/QtGui/private/http://www.cnblogs.com/../src/gui/kernel/qt_x11_p.h:94:37: error: X11/extensions/XInput.h: No such file or directory
http://www.cnblogs.com/include/QtGui/private/http://www.cnblogs.com/../src/gui/kernel/qt_x11_p.h:142:41: error: X11/extensions/Xinerama.h: No such file or directory
http://www.cnblogs.com/include/QtGui/private/http://www.cnblogs.com/../src/gui/kernel/qt_x11_p.h:149:37: error: X11/extensions/Xrandr.h: No such file or directory
http://www.cnblogs.com/include/QtGui/private/http://www.cnblogs.com/../src/gui/kernel/qt_x11_p.h:154:38: error: X11/extensions/Xrender.h: No such file or directory
http://www.cnblogs.com/include/QtGui/private/http://www.cnblogs.com/../src/gui/kernel/qt_x11_p.h:159:26: error: X11/XKBlib.h: No such file or directory
http://www.cnblogs.com/include/QtGui/private/http://www.cnblogs.com/../src/gui/kernel/qt_x11_p.h:200:33: error: X11/Xcursor/Xcursor.h: No such file or directory
http://www.cnblogs.com/include/QtGui/private/http://www.cnblogs.com/../src/gui/kernel/qt_x11_p.h:265:35: error: fontconfig/fontconfig.h: No such file or directory
http://www.cnblogs.com/include/QtGui/private/http://www.cnblogs.com/../src/gui/kernel/qt_x11_p.h:285:35: error: X11/extensions/XShm.h: No such file or directory
$ sudo apt-get install xorg-dev