SUMMARY cmake still asks for libopencv (version >= 3.1.0) even though version with dnn (3.3) is required. Very confusing when building in ubuntu 18.04 (has 3.2). Could you please specify proper minimum version. STEPS TO REPRODUCE 1. Clone. Tested on commit 537345be7223394c47c7b41629b2997f706e3bd3 (HEAD -> master, origin/master, origin/HEAD) Author: Maik Qualmann <metzpinguin@gmail.com> Date: Wed Jan 15 22:47:20 2020 +0100 try to fix crash under OSX CCBUGS: 416289 2. Run "cmake ." OBSERVED RESULT -- Could NOT find OpenCV (missing: dnn) (found version "3.2.0") CMake Warning at core/cmake/modules/MacroOpenCV.cmake:22 (find_package): Found package configuration file: /usr/share/OpenCV/OpenCVConfig.cmake but it set OpenCV_FOUND to FALSE so package "OpenCV" is considered to be NOT FOUND. Call Stack (most recent call first): core/CMakeLists.txt:306 (DETECT_OPENCV) ... -- libopencv found.......................... NO CMake Error at core/cmake/modules/MacroUtils.cmake:47 (message): libopencv is needed. You need to install the libopencv (version >= 3.1.0) development package. Call Stack (most recent call first): core/CMakeLists.txt:597 (PRINT_LIBRARY_STATUS) EXPECTED RESULT It should say 3.3 is required SOFTWARE/OS VERSIONS Ubuntu 18.04.3 LTS libopencv-dev 3.2.0+dfsg-4ubuntu0.1
Git commit 5ffcae391337ba93b7714015d9c5eb0aa362d6cc by Gilles Caulier. Committed on 17/01/2020 at 05:26. Pushed by cgilles into branch 'master'. check for opencv 3.3 as minimal version as DNN module was introduced with this release FIXED_IN: 7.0.0 M +1 -1 Mainpage.dox M +2 -1 NEWS M +3 -3 core/CMakeLists.txt M +2 -2 core/cmake/modules/MacroOpenCV.cmake https://invent.kde.org/kde/digikam/commit/5ffcae391337ba93b7714015d9c5eb0aa362d6cc