Freetype has been found when there are no freetype in environment (Windows)
Nobody has claimed this yet.
Assessment
- Difficulty
- 3/5
- Estimated time
- 1-2 days
- Newbie friendliness
- 35/100
- Issue type
- Bug
- Clarity
- Mostly clear
- Activity status
- Stale
- Tech stack
- cmake, python
- Domain
- build-system
Research direction
Reproduce the Windows wheel build from the repository root with the listed environment variables, then inspect the freetype check shown in opencv_contrib/modules/freetype/CMakeLists.txt and the OpenCVUtils.cmake warning. Done means a missing FreeType installation does not produce a freetype.lib link failure, while the build still completes without manually setting BUILD_opencv_freetype=OFF.
Written by the indexing model from the issue text.
Description
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.
- Dominant language
- Python
- Stars
- 5.4k
- Forks
- 1k
- Avg merge
- 22h 17m
- Merged PRs (30d)
- 3
Contributor guide
First steps
- Read the whole issue, then the project's contributing guide.
- Comment on the issue to say you are picking it up — it saves two people doing the same work.
- Fork the repository and make your change on a branch.
- Open a pull request that references the issue number.
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