Configuration OpenCV for iOS

[Discode]

Hello there;
I have a problem with integrating opencv library and Qt Creator 4.5.0 on Qt 5.10.0;
following instructions i added opencv to .pro file like this:

macx {
LIBS += -L/usr/local/lib
CONFIG  += link_pkgconfig
PKGCONFIG += opencv
}

and it works properly on Mac; but i tried to deploy it on iOS by adding opencv framework:

ios {
LIBS += \
         -F $$PWD/ios \
         -framework opencv2
}

and it's not working , i have 2 error here ,

1. "No such file or directory" on #include opencv
2. "symbol(s) not found for architecture arm64"
   would you please help me to show me my mistake and maybe solve it?

Thank you

[SGaist]

Hi and welcome to devnet,

Did you compile OpenCV for iOS ?
If so, did you compile what architecture did you compile it for ?
If not, how did you obtain it ?

The include statement you show looks wrong, what's the real one ?

[Discode]

Hi SGaist and Thanks for replay;
I tried compile it and make opencv.framework from an instruction with terminal
and i have a framework file and a folder "build" beside it that's include various architects ;
but seems i did something wrong. (it's not working)

#include "opencv2/opencv.hpp"
#include "opencv2/highgui/highgui.hpp"
#include "opencv2/imgproc/imgproc.hpp"

i am using same codes for Mac and iOS, my codes are working on Mac properly

[SGaist]

Where did you get the instructions from ?

What exactly do you have in the resulting framework ?

[Discode]

@SGaist
I use this link to compile opencv framework:
https://docs.opencv.org/2.4/doc/tutorials/introduction/ios_install/ios_install.html

and in result i have a folder "ios" which contains framework and build subfolder

https://drive.google.com/open?id=1S1fN2aSXxcNhobXQxPLqMVM1_PLdNsOY

[SGaist]

Did you check that the framework you are linking to does indeed contain all the required architectures ?

[Discode]

@SGaist said in Configuration OpenCV for iOS:

Did you check that the framework you are linking to does indeed contain all the required architectures ?

Yes , i checked architectures before open this topic,

below is getting lipo -info from my framework:
localhost:opencv2.framework username$ lipo -info opencv2
Architectures in the fat file: opencv2 are: armv7 armv7s i386 x86_64 arm64

[SGaist]

Then did you check that the linker does indeed find your self-built framework of OpenCV ?

[Discode]

Dear @SGaist :
Actually this "opencv2.framework" is working properly in XCode, i'm not a professional but i think something wrong is linking Qt to framework ;
How i can check that linker in my project ?
Just for remembrance i have the yellow line on "#include "opencv2/opencv.hpp" and tooltip says : "No such file or directory".

[SGaist]

Just realized:
@Discode said in Configuration OpenCV for iOS:

-F $$PWD/ios

You are using that option wrong, remove that space between the capital F and the $