GStreamer on Qt for iOS

[FM]

Hello,

I'm trying to develop an iOS application (iPad should be the main target) for controlling a device (Linux embedded) connected to the same network.

Basically it is a remote desktop application.

The application should play a stream video stream transmitted over the network from the Linux device. I use GStreamer for that. I already downloaded and succesfully installed the iOS package from the official site (https://gstreamer.freedesktop.org/documentation/installing/for-ios-development.html?gi-language=c.).

Now, I have some trouble linking the GStreamer framework in the .pro file.

In desktop environments (Windows, Linux and macOS) all I need to do is to use pkg-config



mac {
QT_CONFIG -= no-pkg-config
PKG_CONFIG = /usr/local/bin/pkg-config
}

CONFIG += link_pkgconfig
PKGCONFIG += gstreamer-1.0
PKGCONFIG += gstreamer-pbutils-1.0


and it works just fine. In iOS I don't have pkg-config (afik), so I manually added the framework:



LIBS += -F$$PWD/../../Library/Developer/GStreamer/iPhone.sdk/ -framework GStreamer

INCLUDEPATH += $$PWD/../../Library/Developer/GStreamer/iPhone.sdk/GStreamer.framework/Versions/1.0/Headers
DEPENDPATH += $$PWD/../../Library/Developer/GStreamer/iPhone.sdk/GStreamer.framework/Versions/1.0/Headers

macx: LIBS += -L$$PWD/../../../../Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator.sdk/usr/lib/ -liconv


When I try to build, it gives me this error:



GStreamer(libglib-2_0_a-gconvert.c.o):-1: error: Undefined symbols for architecture x86_64:
"___darwin_check_fd_set_overflow", referenced from:
_gst_poll_wait in GStreamer(libgstreamer-1_0_a-gstpoll.c.o)


I'm aware of the existence of a similar question on nabble.com (http://gstreamer-devel.966125.n4.nabble.com/Gstreamer-on-Qt-iOS-td4676773.html) but I still couldn't figure out the problem.

Any thoughts? Thanks

Additional info

The application must be multi-platform, so it must be built in Qt Creator. It already works on Windows, Linux and macOS.
developing machine macOS 11.3.1
Xcode version 11.2.1
Qt version 5.15.2

[d_stranz]

Your original post was placed in the "moderation" queue for some reason, so it was not visible on the forum. I will close this thread and direct replies to your duplicate post (https://www.qtcentre.org/threads/71652-GStreamer-on-Qt-for-iOS) (which was also moderated but is now visible).

Bots do strange things sometimes. Sorry for the inconvenience.