How to install submodule Qtmultimedia on Fedora?

nrml

Once done installing Qt into /opt directory and git clone and qmake , make install and so forth, but it still says Unknown module(s) in QT: multimedia...

What can I do anything else?

JoeCFD

@nrml It is unnecessary to do git clone anymore after installation. Next step is to add qt bin and lib path in the shell.

add the similar stuff somewhere in .bashrc
export QT_DIR=/opt/thirdParties/Qt/5.15.2/gcc_64
export PATH=$QT_DIR/bin:$PATH
export LD_LIBRARY_PATH=$QT_DIR/lib:$LD_LIBRARY_PATH

open another tab and launch your qtcreator.

nrml

@nrml

I added

export QT_DIR=/opt/Qt/5.15.2/gcc_64
export PATH=$QT_DIR/bin:$PATH
export LD_LIBRARY_PATH=$QT_DIR/lib:$LD_LIBRARY_PATH

in .bashrc and logged out. Then launched qtcreator but the error was there...

What I did is that I installed qtcreator in /opt/Qt/ and installed qtmultimedia which is cloned from git and qmake and so on. Then I added path above in my .bashrc.

JoeCFD

@nrml PATH has to set first before clone. Actually cloning multimedia is not needed.
in /opt/thirdParties/Qt/5.15.2/gcc_64/include, I have:
drwxr-xr-x 3 root root 4096 Jan 12 11:29 QtKmsSupport/
drwxr-xr-x 3 root root 4096 Jan 12 11:29 QtLinuxAccessibilitySupport/
drwxr-xr-x 3 root root 4096 Jan 12 11:29 QtLocation/
drwxr-xr-x 3 root root 12288 Jan 12 11:29 QtMultimedia/
drwxr-xr-x 3 root root 4096 Jan 12 11:29 QtMultimediaGstTools/
drwxr-xr-x 3 root root 4096 Jan 12 11:29 QtMultimediaQuick/
drwxr-xr-x 3 root root 4096 Jan 12 11:29 QtMultimediaWidgets/
drwxr-xr-x 3 root root 4096 Jan 12 11:29 QtNetwork/
drwxr-xr-x 3 root root 4096 Jan 12 11:30 QtNetworkAuth/

in /opt/thirdParties/Qt/5.15.2/gcc_64/lib, I have
-rw-r--r-- 1 root root 1084 Jan 12 11:29 libQt5MultimediaGstTools.la
-rw-r--r-- 1 root root 1999 Jan 12 11:29 libQt5MultimediaGstTools.prl
lrwxrwxrwx 1 root root 34 Jan 12 11:29 libQt5MultimediaGstTools.so -> libQt5MultimediaGstTools.so.5.15.2*
lrwxrwxrwx 1 root root 34 Jan 12 11:29 libQt5MultimediaGstTools.so.5 -> libQt5MultimediaGstTools.so.5.15.2*
lrwxrwxrwx 1 root root 34 Jan 12 11:29 libQt5MultimediaGstTools.so.5.15 -> libQt5MultimediaGstTools.so.5.15.2*
-rwxr-xr-x 1 root root 448160 Nov 6 2020 libQt5MultimediaGstTools.so.5.15.2*
-rw-r--r-- 1 root root 13762056 Nov 6 2020 libQt5MultimediaGstTools.so.5.15.2.debug
-rw-r--r-- 1 root root 773 Jan 12 11:29 libQt5Multimedia.la
-rw-r--r-- 1 root root 1462 Jan 12 11:29 libQt5Multimedia.prl
-rw-r--r-- 1 root root 929 Jan 12 11:29 libQt5MultimediaQuick.la
-rw-r--r-- 1 root root 1786 Jan 12 11:29 libQt5MultimediaQuick.prl
lrwxrwxrwx 1 root root 31 Jan 12 11:29 libQt5MultimediaQuick.so -> libQt5MultimediaQuick.so.5.15.2*
lrwxrwxrwx 1 root root 31 Jan 12 11:29 libQt5MultimediaQuick.so.5 -> libQt5MultimediaQuick.so.5.15.2*
lrwxrwxrwx 1 root root 31 Jan 12 11:29 libQt5MultimediaQuick.so.5.15 -> libQt5MultimediaQuick.so.5.15.2*
-rwxr-xr-x 1 root root 175168 Nov 6 2020 libQt5MultimediaQuick.so.5.15.2*
-rw-r--r-- 1 root root 4672384 Nov 6 2020 libQt5MultimediaQuick.so.5.15.2.debug
lrwxrwxrwx 1 root root 26 Jan 12 11:29 libQt5Multimedia.so -> libQt5Multimedia.so.5.15.2*
lrwxrwxrwx 1 root root 26 Jan 12 11:29 libQt5Multimedia.so.5 -> libQt5Multimedia.so.5.15.2*
lrwxrwxrwx 1 root root 26 Jan 12 11:29 libQt5Multimedia.so.5.15 -> libQt5Multimedia.so.5.15.2*
-rwxr-xr-x 1 root root 1421032 Nov 6 2020 libQt5Multimedia.so.5.15.2*
-rw-r--r-- 1 root root 43392192 Nov 6 2020 libQt5Multimedia.so.5.15.2.debug
-rw-r--r-- 1 root root 880 Jan 12 11:29 libQt5MultimediaWidgets.la
-rw-r--r-- 1 root root 1584 Jan 12 11:29 libQt5MultimediaWidgets.prl
lrwxrwxrwx 1 root root 33 Jan 12 11:29 libQt5MultimediaWidgets.so -> libQt5MultimediaWidgets.so.5.15.2*
lrwxrwxrwx 1 root root 33 Jan 12 11:29 libQt5MultimediaWidgets.so.5 -> libQt5MultimediaWidgets.so.5.15.2*
lrwxrwxrwx 1 root root 33 Jan 12 11:29 libQt5MultimediaWidgets.so.5.15 -> libQt5MultimediaWidgets.so.5.15.2*
-rwxr-xr-x 1 root root 172184 Nov 6 2020 libQt5MultimediaWidgets.so.5.15.2*
-rw-r--r-- 1 root root 2710760 Nov 6 2020 libQt5MultimediaWidgets.so.5.15.2.debug

Do you have all of them?

nrml

@JoeCFD

Thank you for showing your folders.
I checked my /gcc_64/include and /gcc_64/lib. All folders and files you mentioned are in them.

PATH has to set first before clone. Actually cloning multimedia is not needed.

So, all I have to do was add PATH? No qmake or make install? Sorry I am a little confused...

My qt creator's options:

Are there any problems in these?

SGaist

Please do not modify the PATH environment variable like that for development tools.

Beside being unnecessary, it will break as soon as you install a different Qt version and expect it to work automagically from the command line.

As for your issue:

go to the terminal
create a dummy project there that uses QtMultimedia
use the full path to your Qt 5 installation's qmake to set it up
build from the command line

What do you get ?

I insist: use the full path to the qmake executable from your installation.

nrml

@SGaist

Okay, so do you recommend not to edit .bashrc and to use absolute path when I make?

What do you get ?

I added QT += core gui multimedia line to my multimedia temp project's .pro file and #include <QtMultimedia/QMediaPlayer> to .h file. Also added a push button to play some .mp3 file into .ui file. Then from my console I did qmake, make and run.
Wow, It worked!!
Thank you :)

But why does to build from Qt Creator make errors, which cannot find proper files? And this error is still there when I use qtcreator and I cannot build the project using it...

JoeCFD

This post is deleted!

JoeCFD

launch Qt creator ==>Tools==>Options==>Kits==>Versions
switch to tab Kits and select 5.15.2 ( gcc_64 ) under Qt version for Kit: Desktop(click this); then click apply.
Click Qbs==>Profiles==>ModuleProvides==>Qt==>qmakeFilePath and make sure it points to /opt/thirdParties/Qt/5.15.2/gcc_64/bin/qmake
It will do it.

Manual settings on Qt Versions tab can be created and deleted if qt is not automatically detected.

nrml

@JoeCFD

Thanks to your advice, now my qt creator works well!!

nrml

@SGaist , @JoeCFD

Thank you both @SGaist and @JoeCFD so much :)