[gbm]

Trying to install on a Ubuntu 12.04lts:
After downloading and installing QT5.1.0 and cmake 2.8.11.2 get the following errors:

Spoiler:

~/sigil-0.7.3/build$ /home/bernie/cmake-2.8.11.2-Linux-i386/bin/cmake -G "Unix Makefiles" -DCMAKE_PREFIX_PATH=/opt/Qt5.1.0/5.1.0/gcc/lib/cmake -DCMAKE_BUILD_TYPE=Release -DFORCE_BUNDLED_COPIES=1 ~/sigil-0.7.3/src
CMake Error at /opt/Qt5.1.0/5.1.0/gcc/lib/cmake/Qt5Gui/Qt5GuiConfig.cmake:15 (message):
  The imported target "Qt5::Gui" references the file

     "//usr/include/libdrm"

  but this file does not exist.  Possible reasons include:

  * The file was deleted, renamed, or moved to another location.

  * An install or uninstall procedure did not complete successfully.

  * The installation package was faulty and contained

     "/opt/Qt5.1.0/5.1.0/gcc/lib/cmake/Qt5Gui/Qt5GuiConfigExtras.cmake"

  but not all the files it references.

Call Stack (most recent call first):
  /opt/Qt5.1.0/5.1.0/gcc/lib/cmake/Qt5Gui/Qt5GuiConfigExtras.cmake:41 (_qt5_Gui_check_file_exists)
  /opt/Qt5.1.0/5.1.0/gcc/lib/cmake/Qt5Gui/Qt5GuiConfigExtras.cmake:47 (_qt5gui_find_extra_libs)
  /opt/Qt5.1.0/5.1.0/gcc/lib/cmake/Qt5Gui/Qt5GuiConfig.cmake:118 (include)
  /opt/Qt5.1.0/5.1.0/gcc/lib/cmake/Qt5Widgets/Qt5WidgetsConfig.cmake:77 (find_package)
  /opt/Qt5.1.0/5.1.0/gcc/lib/cmake/Qt5Svg/Qt5SvgConfig.cmake:77 (find_package)
  /opt/Qt5.1.0/5.1.0/gcc/lib/cmake/Qt5/Qt5Config.cmake:26 (find_package)
  src/Sigil/CMakeLists.txt:38 (find_package)


-- Configuring incomplete, errors occurred!

Any ideas?

bernie