materials about gumstix
http://qt-project.org/doc/qt-4.8/qt-embedded-install.html
http://qt-project.org/doc/qt-4.8/configure-options.html
http://www.cmake.org/Wiki/CMake_Useful_Variables
http://www.qtforum.org/article/27787/tuto-how-to-install-qt-embedded-linux-4-5-1-on-arm-board-phycore-i-mx31-from-phytec.html
cat /proc/cpuinfo
./configure -embedded arm -little-endian -platform mkspecs/qws/linux-arm-gnueabi-g++ -xplatform mkspecs/qws/linux-arm-gnueabi-g++
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http://cor-net.org/hello-world-in-qt-using-cmake-and-openembedded/3/
http://www.gumstix.org/software-development.html
http://www.gumstix.org/software-development/open-embedded.html
http://www.gumstix.org/software-development/open-embedded/61-using-the-open-embedded-build-system.html
http://www.angstrom-distribution.org/toolchains/