From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thomas Petazzoni Date: Wed, 19 Jul 2017 11:35:53 +0200 Subject: [Buildroot] How to build the qt plugin in gst1-plugins-bad ? In-Reply-To: References: Message-ID: <20170719113553.6669def3@windsurf> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: buildroot@busybox.net Hello, On Wed, 19 Jul 2017 17:17:43 +0800, Glenn Coombs wrote: > configure:50774: WARNING: Could not find any Qt Windowing integration > > I'm not sure why the qt plugin is explicitly disabled - is there a known > issue with building this plugin ? I don't think so, it's probably just that nobody needed it until now, and therefore nobody did the effort to see what changes were needed to enable it. > Can anybody help with what further options I might need to set to get > it to build ? You should read the configure.ac script of gst1-plugins-bad, it gives all the details of the checks it is doing about Qt. See https://cgit.freedesktop.org/gstreamer/gst-plugins-bad/tree/configure.ac?id=1.12.1#n2907. Since you're using eglfs, I think you should fall into the case where: if test "x$GST_GL_HAVE_PLATFORM_EGL" = "x1"; then then since you're not on Android if test "x$GST_GL_HAVE_WINDOW_ANDROID" = "x1"; then should be false, which brings you to the else case: else AC_DEFINE([HAVE_QT_EGLFS], [], [Define if Qt eglfs integration is installed]) HAVE_QT_WINDOWING="yes" fi The error message that you get "Could not find any Qt Windowing integration" appears when HAVE_QT_WINDOWING is "no". So obviously GST_GL_HAVE_PLATFORM_EGL is not "1" in your situation, and that's the problem. GST_GL_HAVE_PLATFORM_EGL is set to 1 in: if test "x$USE_EGL" = "xyes"; then GL_PLATFORMS="egl $GL_PLATFORMS" GST_GL_HAVE_PLATFORM_EGL=1 fi So we need to understand when USE_EGL is set to "yes". For the Linux platform, it is set to yes as follows: if test "x$NEED_EGL" != "xno"; then if test "x$HAVE_WINDOW_WAYLAND" = "xyes" -o "x$HAVE_WINDOW_X11" = "xyes" -o "x$HAVE_WINDOW_DISPMANX" = "xyes" -o "x$HAVE_WINDOW_VIV_FB" = "xyes"; then GL_LIBS="$GL_LIBS -lEGL $EGL_LIBS" GL_CFLAGS="$GL_CFLAGS $EGL_CFLAGS" USE_EGL=yes fi fi So you need to find out why HAVE_WINDOW_VIV_FB is not "yes". I suggest that you add a bunch of additional echo in the configure script to dump the value of the various variables, in order to progressively figure out what's going on. Once you have nailed down the problematic variable, we can probably help again to understand what is the problem. Good luck! Thomas Petazzoni -- Thomas Petazzoni, CTO, Free Electrons Embedded Linux and Kernel engineering http://free-electrons.com