Freetype has been found when there are no freetype in environment (Windows)

Tái hiện quá trình build wheel Windows từ thư mục gốc của repository với các biến môi trường được liệt kê, sau đó kiểm tra phần kiểm tra freetype được hiển thị trong opencv_contrib/modules/freetype/CMakeLists.txt và cảnh báo trong OpenCVUtils.cmake. Được xem là hoàn tất khi việc thiếu cài đặt FreeType không tạo ra lỗi liên kết freetype.lib, trong khi build vẫn hoàn tất mà không cần đặt thủ công BUILD_opencv_freetype=OFF.

Actual behaviour

I have faced the issue when I do not have pre-installed freetype in my environment, but during a build cmake finds it and try to build the project with it.
The log during the configuration:

  -- Checking for module 'freetype2'
  --   Found freetype2, version 23.0.17
  CMake Warning at C:/Users/runneradmin/AppData/Local/Temp/pip-req-build-egif0lkt/opencv/cmake/OpenCVUtils.cmake:882 (message):
    ocv_check_modules(FREETYPE): can't find library 'freetype'.  Specify
    'pkgcfg_lib_FREETYPE_freetype' manually
  Call Stack (most recent call first):
    C:/Users/runneradmin/AppData/Local/Temp/pip-req-build-egif0lkt/opencv_contrib/modules/freetype/CMakeLists.txt:6 (ocv_check_modules)

And the log during the build:

  LINK : fatal error LNK1181: cannot open input file 'freetype.lib' [C:\Users\runneradmin\AppData\Local\Temp\pip-req-build-egif0lkt\_skbuild\win32-3.6\cmake-build\modules\python3\opencv_python3.vcxproj]

Steps to reproduce

• example code:

Run building a wheel command in the root directory of opencv-python repository with the following environment variables:
SDIST=0
ENABLE_HEADLESS=0
ENABLE_CONTRIB=1

python -m pip wheel --wheel-dir=%cd%\wheelhouse . --verbose

• operating system: Windows x86 / x64
• architecture (e.g. x86)
• opencv-python version: 4.5.2
• branch: master

Issue submission checklist

• This is not a generic OpenCV usage question (looking for help for coding, other usage questions, homework etc.)
• I have read the README of this repository and understand that this repository provides only an automated build toolchain for OpenCV Python packages (there is no actual OpenCV code here)
• The issue is related to the build scripts in this repository, to the pre-built binaries or is a feature request (such as "please enable this additional dependency")
• I'm using the latest version of opencv-python

How to temporary fix it

I have added the flag -DBUILD_opencv_freetype=OFF to suppress freetype and to build without it.