1. 安裝eigenlinux
sudo apt-get install libeigen3-dev
sudo apt-get install libsuitesparse-dev sudo apt-get install libqglviewer-dev
對於ARM版本，能夠下載http://eigen.tuxfamily.org，以後放置在toolchain能夠找到的三方庫位置處，我使用的是eigne-3.2.8,這個版本須要qt4支持不是qt5bash
以後指明toolchain.cmake就能夠順利編譯ui
#toolchain cmake file
SET(CMAKE_SYSTEM_NAME Linux)
SET(TOOLCHAIN_DIR "/home/xx/softwares/gcc-linaro-arm-linux-gnueabihf-4.9-2014.09_linux")
SET(3RDPART_LIBS_DIR "/home/xx/install")
#specify the cross compiler
SET(CMAKE_C_COMPILER ${TOOLCHAIN_DIR}/bin/arm-linux-gnueabihf-gcc CACHE FILEPATH "Archiver")
SET(CMAKE_CXX_COMPILER ${TOOLCHAIN_DIR}/bin/arm-linux-gnueabihf-g++ CACHE FILEPATH "Archiver")
#SET(CMAKE_GFORTRAN ${TOOLCHAIN_DIR}/bin/arm-linux-gnueabihf-gfortran)
SET(CMAKE_AR ${TOOLCHAIN_DIR}/bin/arm-linux-gnueabihf-ar CACHE FILEPATH "Archiver")
SET(CMAKE_AS ${TOOLCHAIN_DIR}/bin/arm-linux-gnueabihf-as CACHE FILEPATH "Archiver")
SET(CMAKE_LD ${TOOLCHAIN_DIR}/bin/arm-linux-gnueabihf-ld CACHE FILEPATH "Archiver")
SET(CMAKE_NM ${TOOLCHAIN_DIR}/bin/arm-linux-gnueabihf-nm CACHE FILEPATH "Archiver")
SET(CMAKE_STRIP ${TOOLCHAIN_DIR}/bin/arm-linux-gnueabihf-strip CACHE FILEPATH "Archiver")
# where is the target environment
SET(CMAKE_FIND_ROOT_PATH ${TOOLCHAIN_DIR} ${3RDPART_LIBS_DIR})
# search for programs in the build host directories
SET(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
# for libraries and headers in the target directories
SET(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
SET(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)