OpenCV Parse Issue

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Created Jan ’17

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Currently I am trying to implement OpenCV into my Swift app and when I go to build the project I get a parse issue. It says there is an expected identifier in files "exposure_compensate.hpp" and "blenders.hpp". To implement OpenCV I have created a bridge-header and an Objective-C wrapper for OpenCV's C++ code just like you're supposed to. The compiler says that it is failing because it detected a macro "NO" definition during the build but I have no idea what could be causing it to do that. One source suggested that I include a prefix.pch file to my project but I don't know how to point Swift to the prefix.pch file. Any suggestions on what I should do? Any help would be appreciated.

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Answer 1

Marteiro OP

Feb ’17

Same here...😐

0

Answer 2

Ryanjju OP

May ’25

I've added opencv as follows

Download it and build it

git clone https://github.com/opencv/opencv
cd opencv
mkdir build && cd build
cmake -DBUILD_SHARED_LIBS=OFF -DCMAKE_INSTALL_PREFIX=../install ..
sudo make -j$(sysctl -n hw.logicalcpu)
sudo make install

Go to install
Copy all .a files from lib and lib/opencv4/3rdparty/ into your project. I.e. MyProject/Libraries/
Get to install/include/opencv4/ and copy the opencv2 folder into your project.
Go to your project settings Targets -> Search Paths -> Header Search Paths
Add the following path $(PROJECT_DIR)/Path/to/opencv2/

NOTE: I currently have a problem with my Xcode and I guess it's related to opencv, so you may also encounter this issue.

Ryan

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