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CMake fails to find OpenCV installed via vcpkg under wsl (returns opencv for Windows Conda Environment)

Ask Time:2021-04-06T02:31:50         Author:DoubleSteakHouse

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So I am currently trying to get my CMake Project to build after installing packages via vcpkg for the first time. I am using WSL2 under Win10 with Ubuntu 20.04 for the project, but building throws the following:

philip@DESKTOP-2CHKCMO:/mnt/c/Users/phili/_Documents/Projects/pixelator$ cmake .
-- OpenCV ARCH: 
CMake Warning at /mnt/c/Users/phili/anaconda3/Library/opencvConfig.cmake:140 (message):
  Found OpenCV Windows Pack but it has no binaries compatible with your

  You should manually point CMake variable OpenCV_DIR to your build of OpenCV
Call Stack (most recent call first):
  CMakeLists.txt:13 (find_package)

-- Configuring done
-- Generating done
-- Build files have been written to: /mnt/c/Users/phili/_Documents/Projects/pixelator

This is my CMakeLists.txt:

cmake_minimum_required(VERSION 3.16)
project(pixelator LANGUAGES CXX)

set(CMAKE_TOOLCHAIN_FILE "~/vcpkg/scripts/buildsystems/vcpkg.cmake")

set(OpenCV_DIR "~/vcpkg/packages/opencv4_x64-linux/share/opencv")

find_package(protobuf CONFIG REQUIRED)
find_package(opencv CONFIG REQUIRED)
find_package(gflags CONFIG REQUIRED)

add_library(pixeling ${CMAKE_SOURCE_DIR}/source/pixeling.cpp)
target_link_libraries(pixeling ${OpenCV_LIBS})
add_executable(io ${CMAKE_SOURCE_DIR}/source/io.cpp)
target_link_libraries(io pixeling gflags)

The Folder is located in Windows10, but I am building via Ubuntu. Apparently CMake seems to ignore that I set the OpenCV_DIR and returns an openCV installation for my python anaconda environment (which is not located in wsl, but Windows), which it can't use. Also, I was under the impression that I would not even be required to set the OpenCV_DIR after linking the Toolchain file?

How do I get it to find the right openCV installation?

Author:DoubleSteakHouse,eproduced under the CC 4.0 BY-SA copyright license with a link to the original source and this disclaimer.
Link to original article:https://stackoverflow.com/questions/66957956/cmake-fails-to-find-opencv-installed-via-vcpkg-under-wsl-returns-opencv-for-win