:-1: error: gstreamer-1.0 development package not found

Vijaykarthikeyan

I'm working on Qt 5.15.2 on windows machine .My compiler is msvc 2019 64 bit compiler.I have downloaded both the run and developer installer from Gstreamer offical website,run the msi and installed it..After that,when i included in .pro file and build it..it shows like this::-1: error: gstreamer-1.0 development package not found

SGaist

Let's take step back, previously, you wrote that you did not have pkg-config installed, did that change ? If no, then the .pc file won't be useful to qmake. However, by reading it's content, you will get what you need to add to the INCLUDEPATH and LIBS qmake variable.

To the former you need to append the path where the GStreamer headers can be found and for the latter, the path to where the libraries can be found and which to link to.

jsulm

@Vijaykarthikeyan said in :-1: error: gstreamer-1.0 development package not found:

when i included in .pro file

How exactly?

Vijaykarthikeyan

@jsulm

QT       += core gui quick
QT += multimedia
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

CONFIG += c++17
CONFIG += link_pkgconfig
PKGCONFIG += gstreamer-1.0 gstreamer-video-1.0
# You can make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0

SOURCES += \
    main.cpp \
    mainwindow.cpp

HEADERS += \
    mainwindow.h  \
    gst/gst.h \
    gst/video/video.h

# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target

RESOURCES += \
    qml.qrc

When i run both the runner and developer msi's both installed in same folder called gstreamer.But,I confirmed that both msi's are installed.

SGaist

Hi,

Might be a silly question, but do you have pkg-config for Windows ?
And if so, did you point it to the folder where the Gstreamer *.pc files are located ?

Vijaykarthikeyan

@SGaist No, sir.. Actually I tried to find out the manual to bind it with Qt.. But, unfortunately.. couldn't understand how to bind the path with Qt.. Can someone explain what are the steps to follow to link it with Qt.

SGaist

The quick and easy way is to use Qt Creator. Not that the paths won't be portable but it should help you get started.

JoeCFD

@SGaist he can find the detailed info here.
https://gstreamer.freedesktop.org/documentation/installing/on-windows.html?gi-language=c

I guess using msvc or qt creator does not matter.

SGaist

@JoeCFD in the end it does not matter indeed. Using Qt Creator's facility to add a new library is just the quick and easy solution when you're not used to do that directly in the .pro file.

Vijaykarthikeyan

@SGaist So i need to include the path which containing .pc files..isn't it?

SGaist

@Vijaykarthikeyan it depends whether you are going to use pkg-config or not. From your answer, it seems not. In that case you have to add the information about where to find the includes and libraries for GStreamer as well as link to the libraries required to your project file.

Vijaykarthikeyan

@SGaist I have already found the .pc files in this directory:

C:\gstreamer\1.0\msvc_x86_64\lib\pkgconfig

is it enough to included in the .pro file. or any other additional paths to be included in.pro.

I'm using windows 10 and msvc 2019 64 bit compiler..I have found .a, .dll, .lib libraries in the gstreamer library..which one i have to include..

SGaist

Let's take step back, previously, you wrote that you did not have pkg-config installed, did that change ? If no, then the .pc file won't be useful to qmake. However, by reading it's content, you will get what you need to add to the INCLUDEPATH and LIBS qmake variable.

To the former you need to append the path where the GStreamer headers can be found and for the latter, the path to where the libraries can be found and which to link to.

Vijaykarthikeyan

@SGaist thank you..