BCM 7425 – Qt 4.8 – DirectFB /QWS

Building AppLibs/RefSW for Qt

  1. Locate document named “BroadcomReferencePlatformSetup.pdf” (Usually this will be inside a tar ball named on the lines of refsw_release_<chip-name>_<date>.tgz)
  2. Follow the instructions in “BroadcomReferencePlatformSetup.pdf” to setup the Linux build machine
  3. Locate document named “AppLibsInstallationBuildGuide.pdf” (Usually this will be inside a tar ball named on the lines of applibs_release_<date>.tgz)
  4. Follow the instructions in “AppLibsInstallationBuildGuide.pdf” to build Applibs

Qt 4.8 DirectFB / QWS

  1. Obtain qt-4.8.0 release from Qt Download site [get.qt.nokia.com] and extract it in a working folder
  2. Obtain 7425 specific files from qt-platform-mkspecs git [gitorious.org] (look for folder “4.8”)
  3. Copy folder named “linux-7425dfb-mipsel-uclibc-g++” to <qt-4.8.0-sources>/mkspecs/qws
  4. Set following environment variables in the shell before configuring/building Qt,
    1. BCM_APPLIBS_PATH=<path-till-Applibs-folder>/AppLibs
    2. BCM_NEXUS_PATH=<path-till-Applibs-folder>/nexus
    3. BCM_TARGET_LIBDIR=<path-till-nfsrootfs-base-folder>/romfs/lib
    4. DEBUG=n

    for example,
    1. $ export BCM_APPLIBS_PATH=/home/qtnokia/WorkDir/97425-P1/stb-rs_p2-al_p2dot1/AppLibs
    2. $ export BCM_NEXUS_PATH=/home/qtnokia/WorkDir/97425-P1/stb-rs_p2-al_p2dot1/nexus
    3. $ export BCM_TARGET_LIBDIR=/opt/nfsroot_uclibc/romfs/lib
  5. Configure Qt as,
    1. $ configure -embedded mips -xplatform qws/linux-7425dfb-mipsel-uclibc-g++ -depths 16,24,32 -no-largefile \
    2. -no-accessibility -opensource -verbose -system-zlib -system-libpng -system-libjpeg -system-freetype -fast \
    3. -qt-gfx-directfb -qt-gfx-vnc -qt-kbd-linuxinput -qt-mouse-linuxinput -webkit -declarative -multimedia \
    4. -confirm-license -release -make libs -xmlpatterns -exceptions -no-qt3support -no-xvideo \
    5. -prefix /usr/local/qt-installs/qt480ga-mdfb-rel
  6. Build Qt as,
    1. $ make
  7. Install Qt on host as,
    1. $ make install

Building Qt apps

  1. After the Qt build succeeds set following environment variables on host before building any Qt Apps for the above build, *QTDIR=/usr/local/qt-installs/qt480ga-mdfb-rel *PATH=/usr/local/qt-installs/qt480ga-mdfb-rel/bin:$PATH
  2. Ensure that following environment variables in the shell are set,
    1. BCM_APPLIBS_PATH=<path-till-Applibs-folder>/AppLibs
    2. BCM_NEXUS_PATH=<path-till-Applibs-folder>/nexus
    3. BCM_TARGET_LIBDIR=<path-till-nfsrootfs-base-folder>/romfs/lib
    4. DEBUG=n
  3. Invoke qmake on the applications .pro file
    1. $ qmake <application>.pro
  4. Build the application sources as,
    1.  $ make

Running Qt apps on target

  1. Ensure that folder “qt-installs/qt480ga-mdfb-rel” is copied on target file system at “/usr/local” Note – after copying, the path should appear as “/usr/local/qt-installs/qt480ga-mdfb-rel”
  2. Copy the application binary and other required resource files on target file-system, at say “/root”
  3. On target, goto directory containing directfb startup script as,
    1. # cd /usr/local/bin/directfb/1.4
  4. Install board specific modules and create device nodes by running “rundfb.sh” as,
    1.  # ./rundfb.sh install
  5. Launch application using same rundfb.sh script as,
    1.  # ./rundfb.sh /root/app1/app1 -qws -display directfb

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