Broadcom97425-BCM7425-Qt4dot8-eglfs-QPA

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 eglfs / QPA

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-7425nxs-mipsel-uclibc-g++” to <qt-4.8.0-sources>/mkspecs/qpa
4. Set following environment variables in the shell before configuring/building Qt,
   • BCM_APPLIBS_PATH=<path-till-Applibs-folder>/AppLibs
   • BCM_NEXUS_PATH=<path-till-Applibs-folder>/nexus
   • DEBUG=n
   • for example,
     $ export BCM_APPLIBS_PATH=/home/qtnokia/WorkDir/97425-P1/stb-rs_p2-al_p2dot1/AppLibs
     $ export BCM_NEXUS_PATH=/home/qtnokia/WorkDir/97425-P1/stb-rs_p2-al_p2dot1/nexus
5. Apply patch “7425nxs-eglfs.patch” to eglfs Qt Lighthouse Driver located at <qt-4.8.0-sources>/src/plugins/platforms/eglfs
   • $ cd <qt-4.8.0-sources>/src/plugins/platforms/eglfs
   • $ patch -p4 < 7425nxs-eglfs.patch
6. Configure Qt as,
   • $ configure -qpa -arch mips -xplatform qpa/linux-nxs-mipsel-uclibc-g++ -depths 16,24,32 -no-largefile -no-accessibility \
   • -opensource -verbose -system-zlib -system-libpng -system-libjpeg -system-freetype -fast -opengl -webkit -confirm-license \
   • -release -make libs -xmlpatterns -exceptions -no-qt3support -prefix /usr/local/qt-installs/qt480ga-nxs-qpa-rel
7. Build Qt as,
   • $ make
8. Install Qt on host as,
   • $ make install

Building Qt apps

1. After the Qt build succeeds, set following environment variables on host before building any fullscreen OpenGL Qt App for the above build,
   • QTDIR=/usr/local/qt-installs/qt480ga-nxs-qpa-rel
   • PATH=/usr/local/qt-installs/qt480ga-nxs-qpa-rel/bin:$PATH
2. Ensure that following environment variables in the shell are set,
   • BCM_APPLIBS_PATH=<path-till-Applibs-folder>/AppLibs
   • BCM_NEXUS_PATH=<path-till-Applibs-folder>/nexus
   • BCM_TARGET_LIBDIR=<path-till-nfsrootfs-base-folder>/romfs/lib
   • DEBUG=n
3. Invoke qmake on the applications .pro file (<qt-4.8.0-sources>/examples/opengl/hello_gles2)
   • $ qmake <application>.pro
4. Build the application sources as,
   • $ make

Running Qt apps on target

1. Ensure that folder “qt-installs/qt480ga-nxs-qpa-rel” is copied on target file system at “/usr/local”
   • Note – after copying, the path should appear as “/usr/local/qt-installs/qt480ga-nxs-qpa-rel”
2. Copy the application binary and other required resource files on target file-system, say “/root”
3. Locate a shell script named “start” in “/bin” folder on target.
4. Copy it in your app folder and edit the paths inside it.
5. Launch application using same “start” script as,
   • # ./start /root/app1/app1 -platform eglfs

NOTE: Before executing any Qt applications on target copy “qt-installs/qt480ga-nxs-qpa-rel” on target at usr/local on target file system

Categories:

• Devices