Broadcom97425/BCM7425-Qt4dot8-eglnullws-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 eglnullws / QWS

This details steps to build Qt with Qt’s OpenGL graphics driver.<br>
This OpenGL graphics driver supports execution of Single Qt app that uses QGLWidget as full-screen (examples/opengl/hello_gles2)

1. Obtain qt-4.8.0 release from Qt Download site and extract it in a working folder
2. Obtain 7425 specific files from qt-platform-mkspecs git (look for folder “4.8”)
3. Copy folder named “linux-7425nxs-mipsel-uclibc-g++” to <qt-4.8.0-sources>/mkspecs/qws
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
     

1. Apply patch “7425nxs-eglnullws.patch” to eglnullws Qt GFX Driver located at <qt-4.8.0-sources>/src/plugins/gfxdrivers/eglnullws
   

1. Configure Qt as,
   

1. Build Qt as,
   

1. Install Qt on host as,
   

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-qws-rel
   • PATH=/usr/local/qt-installs/qt480ga-nxs-qws-rel/bin:$PATH

1. 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

1. Invoke qmake on the applications .pro file (<qt-4.8.0-sources>/examples/opengl/hello_gles2)
   

1. Build the application sources as,
   

Running Qt apps on target

1. Ensure that folder “qt-installs/qt480ga-nxs-qws-rel” is copied on target file system at “/usr/local”
   • Note – after copying, the path should appear as “/usr/local/qt-installs/qt480ga-nxs-qws-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,