debdiff for Focal attached.
** Patch added: "qt-gstreamer_focal.debdiff"
https://bugs.launchpad.net/ubuntu/+source/qtcreator/+bug/1950959/+attachment/5730799/+files/qt-gstreamer_focal.debdiff
** Description changed:
[ Impact ]
The package libqt5gstreamer-dev is mostly unusable for users whose
development environment uses pkg-config to find dependencies.
If we use pkg-config to find the CFLAGS that are needed to link with
libQt5GStreamer-1.0.so then that will fail.
An example command:
# pkg-config --cflags Qt5GStreamer-1.0
Package gobject-2.0 was not found in the pkg-config search path.
Perhaps you should add the directory containing `gobject-2.0.pc'
to the PKG_CONFIG_PATH environment variable
Package 'gobject-2.0', required by 'Qt5GLib-2.0', not found
[ Test Plan ]
- * Execute the command "pkg-config --cflags Qt5GStreamer-1.0" and cofirm
+ * Execute the command "pkg-config --cflags Qt5GStreamer-1.0" and cofirm
that pkg-config can find the CFLAGS needed to link with
libQt5GStreamer-1.0.so
[ Where problems could occur ]
- * The dependency fix alone should not cause any problem as its not
+ * The dependency fix alone should not cause any problem as its not
changing any part of the code. But another fix from Debian had to be
added, as without that fix the package is failing to build in Jammy.
And, this patch is removing a volatile qualifier from a variable. But
this patch is in Debian since Sept, 2022 without any report of
regression so I will assume there is little chance of regression on
adding it here in Jammy.
+ * Apart from the dependency fix, another patch had to be added for
+ Focal as it was failing to build. This patch is in Debian since Feb,2021
+ with no report of regression and has also been applied upstream, there
+ is little chance of regression from this patch.
+
[ Other Info ]
- * the package mentioned in the bug is wrong, it affects qt-gstreamer source.
-
- * as mentioned above an extra Debian patch is needed. Without that patch the
build fails in Jammy with the error:
+ * the package mentioned in the bug is wrong, it affects qt-gstreamer
+ source.
+
+ * as mentioned above an extra Debian patch is needed. Without that
+ patch the build fails in Jammy with the error:
/<<PKGBUILDDIR>>/elements/gstqtvideosink/gstqwidgetvideosink.cpp: In static
member function ‘static GType GstQWidgetVideoSink::get_type()’:
/usr/include/glib-2.0/glib/gatomic.h:113:19: error: argument 2 of
‘__atomic_load’ must not be a pointer to a ‘volatile’ type
- 113 | __atomic_load (gapg_temp_atomic, &gapg_temp_newval,
__ATOMIC_SEQ_CST); \
- |
~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+ 113 | __atomic_load (gapg_temp_atomic, &gapg_temp_newval,
__ATOMIC_SEQ_CST); \
+ |
~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/usr/include/glib-2.0/glib/gthread.h:260:7: note: in expansion of macro
‘g_atomic_pointer_get’
- 260 | (!g_atomic_pointer_get (location) && \
- | ^~~~~~~~~~~~~~~~~~~~
+ 260 | (!g_atomic_pointer_get (location) && \
+ | ^~~~~~~~~~~~~~~~~~~~
/<<PKGBUILDDIR>>/elements/gstqtvideosink/gstqtvideosinkplugin.h:31:13: note:
in expansion of macro ‘g_once_init_enter’
- 31 | if (g_once_init_enter(&gonce_data)) { \
- | ^~~~~~~~~~~~~~~~~
+ 31 | if (g_once_init_enter(&gonce_data)) { \
+ | ^~~~~~~~~~~~~~~~~
/<<PKGBUILDDIR>>/elements/gstqtvideosink/gstqtvideosinkplugin.h:56:5: note:
in expansion of macro ‘DEFINE_TYPE_FULL’
- 56 | DEFINE_TYPE_FULL(cpp_type, #cpp_type "_qt5", parent_type,
Q_UNUSED)
- | ^~~~~~~~~~~~~~~~
+ 56 | DEFINE_TYPE_FULL(cpp_type, #cpp_type "_qt5", parent_type,
Q_UNUSED)
+ | ^~~~~~~~~~~~~~~~
/<<PKGBUILDDIR>>/elements/gstqtvideosink/gstqwidgetvideosink.cpp:22:1: note:
in expansion of macro ‘DEFINE_TYPE’
- 22 | DEFINE_TYPE(GstQWidgetVideoSink, GST_TYPE_QT_VIDEO_SINK_BASE)
- | ^~~~~~~~~~~
+ 22 | DEFINE_TYPE(GstQWidgetVideoSink, GST_TYPE_QT_VIDEO_SINK_BASE)
+ | ^~~~~~~~~~~
make[4]: ***
[elements/gstqtvideosink/CMakeFiles/gstqt5videosink.dir/build.make:227:
elements/gstqtvideosink/CMakeFiles/gstqt5videosink.dir/gstqwidgetvideosink.cpp.o]
Error 1
+ * The package failed to build in Focal also and a Debian patch had to be
+ added for that.
- * The problem has been fixed in Debian with qt-gstreamer_1.2.0-5.2, so Lunar,
Mantic and Noble are not affected. Only Jammy and Focal are affected.
+ * The problem has been fixed in Debian with qt-gstreamer_1.2.0-5.2, so
+ Lunar, Mantic and Noble are not affected. Only Jammy and Focal are
+ affected.
[ Original Bug Description ]
After installing libqt5gstreamer-dev, the following command fails:
pkg-config --exists Qt5GStreamer-1.0 || echo "Failed"
Failed
more info:
pkg-config --cflags Qt5GStreamer-1.0
Package gstreamer-1.0 was not found in the pkg-config search path.
Perhaps you should add the directory containing `gstreamer-1.0.pc'
to the PKG_CONFIG_PATH environment variable
Package 'gstreamer-1.0', required by 'Qt5GStreamer-1.0', not found
After installing libgstreamer-plugins-base1.0-dev (also brings the
missing libgstreamer1.0-dev), it works.
* Ubuntu 20.04.3 LTS
* libqt5gstreamer-dev (1.2.0-5)
* amd64
** Changed in: qtcreator (Ubuntu Focal)
Assignee: Sudip Mukherjee (sudipmuk) => (unassigned)
** Changed in: qtcreator (Ubuntu Focal)
Status: In Progress => Confirmed
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https://bugs.launchpad.net/bugs/1950959
Title:
[SRU] Missing dependency in libqt5gstreamer-dev
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