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I am trying to make a simple qt c++ VoIP application, when I searched I found the QtGStreamer Lib and wanted to make it work. I download the latest version 1.2 from here.
When I went to the example folder and tried to compile the VoIP example I got this error:
Qt5GStreamer-1.0 development package not found

What I try is comment this line CONFIG += link_pkgconfig in .pro file and add the src folder that came with the folder of QtGstreamer to folder project. I also added this to .pro file
INCLUDEPATH += $$PWD/src this the path of the Libs folder

Now I get an error that i need to add boost Lib so I add it by adding this to .pro file 

INCLUDEPATH += C:/boost_1_61_0
LIBS += "-LC:/boost_1_61_0/stage/lib"

Now I get many errors that say (undefined reference to ..) 130 error. Not sure what to try.
the file comes with containing Readme file I download the dependency but the same error I think the problem that I don't link it correctly
I'm still a beginner in 3rd party and link libs in c++,
my os is windows Thanks in advance

user7179690
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    Check out the README in the root directory of the download. Section 2.1 has a list of dependencies required to use the package. Once you have all of that installed try the build procedure in 2.3. Once that is working try the examples per 2.7. If you have errors then, post a new question with the specific error messages you're getting. – Sean Kuhlman Sep 28 '16 at 20:32
  • i follow this and download all Dependencies but The same problem Qt5GStreamer-1.0 development package not found – user7179690 Sep 28 '16 at 20:51
  • i add this to .pro file INCLUDEPATH += C:/boost_1_61_0 && LIBS += "-LC:/boost_1_61_0/stage/lib" && INCLUDEPATH += C:/gstreamer/1.0/x86_64/include – user7179690 Sep 28 '16 at 20:54
  • I don't believe that you did the build procedure in 2.3. – Sean Kuhlman Sep 28 '16 at 20:56
  • what the path he mean in this line cmake .. -DCMAKE_INSTALL_PREFIX=/path/to/installation/prefix ? the src or the example or what ? – user7179690 Sep 28 '16 at 21:04
  • i try this in the example folder and i get https://s14.postimg.org/mume718sx/Capture.png – user7179690 Sep 28 '16 at 21:07

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