Reinstall Qt5 with QtMultimedia using Ubuntu Mate
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@SGaist ok thanks, i found all -dev packages for all the errors exept ffmpeg and dbus-linked.
./configure output is now:Note: Also available for Linux: linux-clang linux-icc Note: Dropped compiler flags '-pthread' when detecting library 'glib'. Note: Disabling X11 Accessibility Bridge: D-Bus or AT-SPI is missing. Note: Dropped compiler flags '-pthread' when detecting library 'gstreamer'. Note: Dropped compiler flags '-pthread' when detecting library 'gstreamer_app'. ERROR: Feature 'dbus-linked' was enabled, but the pre-condition 'features.dbus && libs.dbus' failed. ERROR: Feature 'system-ffmpeg' was enabled, but the pre-condition 'libs.ffmpeg && features.system-opus && features.system-webp' failed. Check config.log for details.Do i actually need ffmpeg for qtMultimedia? Since it is a videoplayer i guess yes. I think i have to install this from source to and that could be a real pain..
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You can install libavcodec-dev and friends for ffmpeg inclusion.
As for dbus, the dbus dev package.
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@Xenoshell Why do you want to install ffmpeg from source? Install libavcodec-dev package from your Linux distribution.
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@SGaist i installed your suggested packages and now output is:
Note: Also available for Linux: linux-clang linux-icc Note: Dropped compiler flags '-pthread' when detecting library 'glib'. Note: Disabling X11 Accessibility Bridge: D-Bus or AT-SPI is missing. Note: Dropped compiler flags '-pthread' when detecting library 'gstreamer'. Note: Dropped compiler flags '-pthread' when detecting library 'gstreamer_app'. ERROR: Feature 'system-ffmpeg' was enabled, but the pre-condition 'libs.ffmpeg && features.system-opus && features.system-webp' failed.@Jsulm i dont want to install ffmpeg from source. I just installed already the package and the error still occurs and i just googled the problem and the solution was to install from source
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Check the logs for the related errors. You can also use the -v option to get a more verbose output of the configuration process.
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@SGaist I think i found the relevant piece of information in config.log
looking for library ffmpeg Trying source 0 (type pkgConfig) of library ffmpeg ... + /usr/bin/pkg-config --exists --silence-errors libavcodec libavformat libavutil pkg-config did not find package. => source produced no result. test config.qtwebengine.libraries.ffmpeg FAILED executing config test ninja Building own ninja test config.qtwebengine.tests.ninja FAILED looking for library opus Trying source 0 (type pkgConfig) of library opus ... + /usr/bin/pkg-config --exists --silence-errors opus pkg-config did not find package. => source produced no result. test config.qtwebengine.libraries.opus FAILED executing config test re2 + cd /home/blz/Downloads/qt-everywhere-opensource-src-5.9.3/config.tests/re2 && /home/blz/Downloads/qt-everywhere-opensource-src-5.9.3/qtbase/bin/qmake "CONFIG -= qt debug_and_release app_bundle lib_bundle" "CONFIG += shared use_gold_linker warn_off console single_arch" /home/blz/Downloads/qt-everywhere-opensource-src-5.9.3/qtwebengine/config.tests/re2 + cd /home/blz/Downloads/qt-everywhere-opensource-src-5.9.3/config.tests/re2 && MAKEFLAGS= /usr/bin/make clean && MAKEFLAGS= /usr/bin/make > rm -f re2.o > rm -f *~ core *.core > g++ -c -pipe -O2 -std=gnu++11 -w -fPIC -I/home/blz/Downloads/qt-everywhere-opensource-src-5.9.3/qtwebengine/config.tests/re2 -I. -I/home/blz/Downloads/qt-everywhere-opensource-src-5.9.3/qtbase/mkspecs/linux-g++ -o re2.o /home/blz/Downloads/qt-everywhere-opensource-src-5.9.3/qtwebengine/config.tests/re2/re2.cpp > /home/blz/Downloads/qt-everywhere-opensource-src-5.9.3/qtwebengine/config.tests/re2/re2.cpp:29:21: fatal error: re2/re2.h: No such file or directory > compilation terminated. > Makefile:1021: recipe for target 're2.o' failed > make: *** [re2.o] Error 1 test config.qtwebengine.tests.re2 FAILED looking for library webp Trying source 0 (type pkgConfig) of library webp ... + /usr/bin/pkg-config --exists --silence-errors libwebp libwebpdemux pkg-config did not find package. => source produced no result. test config.qtwebengine.libraries.webp FAILED -
Install the libavformat and libavutil dev packages. Same goes for opus.
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@SGaist
Oh well, here are some errors.. Should i be worried or not?/usr/lib/gcc/arm-linux-gnueabihf/5/../../../arm-linux-gnueabihf/crt1.o(.text+0x28): error: undefined reference to 'main' collect2: error: ld returned 1 exit status Makefile:81: recipe for target 'schema' failed make[4]: *** [schema] Error 1 make[4]: Leaving directory '/home/blz/Downloads/qt-everywhere-opensource-src-5.9.3/qtxmlpatterns/examples/xmlpatterns/schema' Makefile:122: recipe for target 'sub-schema-make_first' failed make[3]: *** [sub-schema-make_first] Error 2 make[3]: Leaving directory '/home/blz/Downloads/qt-everywhere-opensource-src-5.9.3/qtxmlpatterns/examples/xmlpatterns' Makefile:44: recipe for target 'sub-xmlpatterns-make_first' failed make[2]: *** [sub-xmlpatterns-make_first] Error 2 make[2]: Leaving directory '/home/blz/Downloads/qt-everywhere-opensource-src-5.9.3/qtxmlpatterns/examples' Makefile:97: recipe for target 'sub-examples-make_first' failed make[1]: *** [sub-examples-make_first] Error 2 make[1]: Leaving directory '/home/blz/Downloads/qt-everywhere-opensource-src-5.9.3/qtxmlpatterns' Makefile:282: recipe for target 'module-qtxmlpatterns-make_first' failed make: *** [module-qtxmlpatterns-make_first] Error 2I am gonna not use
make installjust yet, because errors and wait for your answer. -
@Xenoshell
Just to let you know: I am the person who tried to help with your original "why I am unable to use the camera without freezing?" question!I see this thread is getting long, I do hope my advice to sort out your multimedia installation fully is worth it for all this compiling etc. you're doing, and not a red-herring...!!
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Don't build the tests nor the example, especially since your are cross-compiling. There's no use for that and you'll waste space, time and electricity for nothing.
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@Xenoshell As you can see from what you posted those errors are coming from examples. As @SGaist suggested there is no need to build examples and tests (so, no these errors are not important). Use -skip to not to build examples and tests.
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@Xenoshell make install ?
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@Xenoshell Do you mean there is no libQt5Multimedia.* in lib directory and no header files?
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@jsulm nope in the lib folder there is only just everything else. Here is my command i used
./configure -opengl desktop -gui -widgets -gstreamer -pulseaudio -alsa -ffmpeg -dbus-linked, Do i maybe have to also add-multimedia?? I dont think there even is that command, but what do i have to do to install QtMultimedia
