Setup GCS dev enviroment

1. login system using root user by default.   gedit /usr/share/lightdm/lightdm.conf.d/50-ubuntu.conf   add "greeter-show-manual-login=true"   modify root password: sudo passwd root   restart linux2. experience error: "stdin:is not a tty"   gedit /root/.profile   comments "mesg n" using '#'   append "tty -s && mesg n"3. enter directory: ..../tools/ubuntu-644. execute *.run to setup qt-creator5.4.0 to  /trunk/tools/qt-5.4.05. apt-get install g++6. experience error: "libusb-1.0-0-dev error"   apt-get install libusb-1.0-0-dev7. Note: this step can be ignored if both the step 5 and step 8 have been setup!   experience compiling error: "error: Qt Creator needs a compiler set up to build. Configure a compile"   apt-get install build-essential8. experience compiling error: "cannot find -lGL"   apt-get install libgl1-mesa-dev   apt-get install libglu1-mesa-dev9. experience error: Can not find <SDL/SDL.h>   apt-get install libsdl1.2-dev10. Could not decode "AuthorModel.qml" with "UTF-8"-encoding. Editing not possible.   Change Qt building path to "build" folder.11. Cannot find "libudev-dev"   apt-get install libudev-dev   14116.25 330 2500 10000 1.44 13121.4 100 100 200   GCS and firmware version of the UAV objects set do not match which can cause configuration problems.12. sudo apt-get install lib32z113. setup SVN Workbench in Ubuntu软件中心all: apt-get install g++ libusb-1.0-0-dev build-essential libgl1-mesa-dev libglu1-mesa-dev libsdl1.2-dev libudev-dev lib32z1apt-get install default-jdk