<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> </head> <body> <div class="moz-cite-prefix">Hi, This is a common build error for building the qmlgl plugins and while the hack in ext/qt/gstqtgl.h is meant to help, obviously it does not for you. If you can find a set up of #include's and defined that works on both the RPi and on a normal desktop linux without performing rpi specific hacks, then I'd be happy to review that patch. Cheers -Matt On 22/11/19 3:19 am, Milian Wolff wrote: </div> <blockquote type="cite" cite="mid:4714867.q6SlZIlXqB@agathebauer"> <pre class="moz-quote-pre" wrap="">Hey there, when trying to cross compile gst-plugins-good-1.16.1 for a raspberry pi 3b+ I see the following compile errors: ``` make[4]: Entering directory '/path/to/gst-plugins-good-1.16.1/ext/qt' CXX libgstqmlgl_la-qtitem.lo In file included from gstqtgl.h:32, from qtitem.h:27, from qtitem.cc:28: /path/to/sdk/sysroots/cortexa7t2hf-neon-vfpv4-poky-linux-gnueabi/path/to/sdk/ sysroots/cortexa7t2hf-neon-vfpv4-poky-linux-gnueabi/usr/include/gstreamer-1.0/ gst/gl/gstglfuncs.h:93:17: error: expected identifier before ‘*’ token ret (GSTGLAPI *name) args; ^ /path/to/sdk/sysroots/cortexa7t2hf-neon-vfpv4-poky-linux-gnueabi/path/to/sdk/ sysroots/cortexa7t2hf-neon-vfpv4-poky-linux-gnueabi/usr/include/gstreamer-1.0/ gst/gl/glprototypes/sync.h:27:1: note: in expansion of macro ‘GST_GL_EXT_FUNCTION’ GST_GL_EXT_FUNCTION (GLsync, FenceSync, ^~~~~~~~~~~~~~~~~~~ /path/to/sdk/sysroots/cortexa7t2hf-neon-vfpv4-poky-linux-gnueabi/path/to/sdk/ sysroots/cortexa7t2hf-neon-vfpv4-poky-linux-gnueabi/usr/include/gstreamer-1.0/ gst/gl/glprototypes/sync.h:29:39: error: ISO C++ forbids declaration of ‘GLsync’ with no type [-fpermissive] GLbitfield flags)) ^ /path/to/sdk/sysroots/cortexa7t2hf-neon-vfpv4-poky-linux-gnueabi/path/to/sdk/ sysroots/cortexa7t2hf-neon-vfpv4-poky-linux-gnueabi/usr/include/gstreamer-1.0/ gst/gl/gstglfuncs.h:93:24: note: in definition of macro ‘GST_GL_EXT_FUNCTION’ ret (GSTGLAPI *name) args; ^~~~ /path/to/sdk/sysroots/cortexa7t2hf-neon-vfpv4-poky-linux-gnueabi/path/to/sdk/ sysroots/cortexa7t2hf-neon-vfpv4-poky-linux-gnueabi/usr/include/gstreamer-1.0/ gst/gl/glprototypes/sync.h:29:39: error: ‘GLsync’ declared as function returning a function GLbitfield flags)) ... ``` Note that this is using `include/gstreamer-1.0/gst/gl/glprototypes/ gstgl_gles2compat.h` which has no GLsync in it. In the non-gles2 version of this header I see ``` #if !GST_GL_HAVE_GLSYNC typedef gpointer GLsync; #endif ``` Copying that over to the gles2 header doesn't fix it, and indeed that's probably due to the following hack in ext/qt/gstqtgl.h: ``` /* qt uses the same trick as us to typedef GLsync on GLES2 but to a different * type which confuses the preprocessor. Instead of trying to reconcile the * two, we instead use the GLsync definition from Qt from above, and ensure * that we don't typedef GLsync in gstglfuncs.h */ #include <gst/gl/gstglconfig.h> #undef GST_GL_HAVE_GLSYNC #define GST_GL_HAVE_GLSYNC 1 #include <gst/gl/gstglfuncs.h> ``` If I instead add the `typedef gpointer GLsync` forward without the macro check for GST_GL_HAVE_GLSYNC, then compilation succeeds. So it seems my Qt 5.13.0 headers don't define GLsync anymore? Has anyone run into this and knows how to handle this issue correctly? Thanks </pre> <fieldset class="mimeAttachmentHeader"></fieldset> <pre class="moz-quote-pre" wrap="">_______________________________________________ gstreamer-devel mailing list <a class="moz-txt-link-abbreviated" href="mailto:gstreamer-devel@lists.freedesktop.org">gstreamer-devel@lists.freedesktop.org</a> <a class="moz-txt-link-freetext" href="https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel">https://lists.freedesktop.org/mailman/listinfo/gstreamer-devel</a></pre> </blockquote> </body> </html>