TOtto-EclipseIR
commented
2 years ago Build OpenCV4
-
Reference:
-
OpenCV Source Code
- [ ] Fork
https://github.com/opencv/opencv.git&opencv_contrib - [ ] Checkout/Switch to Tag 4.5.5
- [ ] ...
- [ ] Fork
-
Prerequisites
- [ ] CMake3
- [ ]
From https://cmake.org/download, get cmake-3.23.0-rc2.zip (or cmake-3.22.3.zip) - [ ] From
https://cmake.org/download, getcmake-3.22.3-windows_x86_64.msi - [ ] Run the MSI installer file
- PATH for all users; desktop icon
- C:\lang\cmake
- & Install & Finish
- [ ] g++
- Using g++ from the Qt6 install
- Add
C:\Qt\6.3.2\mingw_64\binto the System PATH
-
Build OpenCV4
- CV GUI
- [ ] From
C:\lang\opencv\bin, run 'cmake-gui.exe`- OpenCV Sources:
C:\git\opencv - Build OpenCV:
C:\lang\opencv4\build - & [Configure]
- OpenCV Sources:
- [ ] Generator
- MinGW Makefiles
- Specify Compilers
- C:
C:\Qt\Tools\mingw900_64\bin\gcc.exe - C++:
C:\Qt\Tools\mingw900_64\bin\g++.exe - & [Finish] and get a cup of coffee
- [ ] Handle Configure Errors
- Set
CMAKE_MAKE_TOOLtoC:\Qt\Tools\mingw900_64\mingw32_make.exe - Note: Mingw32 is actually 64-bit they promise.
- & [Configure] again
- Set
- [ ] Set Configuration Options
- Check
WITH_QT - Check
WITH_OPENGL - Doc says: _Set
QT6_DIRto `C:\Qt..._, but doesn't seem to be there in this version. - Uncheck ENABLE_PRECOMPILED_HEADERS
- Make sure the GNU tools CMake is using from Qt's GCC bin dir are reasonable
- & [Configure] one last time (hopefully)
- Check
- [ ] Code Generation
- If all looks well from final configuration, [Generate]
- DOS Box
cd \lang\opencv4\build
- [ ] Build
mingw32-make -j2Up to-j8if you can get more cores
- [ ] Install
mingw32-make install
Note: Build Fail without OpenGL
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CMake Error:
Consolidate compiler generated dependencies of target opencv_highgui [ 38%] Linking CXX shared library ..\..\bin\libopencv_highgui455.dll C:/Qt/Tools/mingw900_64/bin/../lib/gcc/x86_64-w64-mingw32/11.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles\opencv_highgui.dir/objects.a(window_QT.cpp.obj):window_QT.cpp:(.text$_ZN14OpenGlViewPort12initializeGLEv+0xd): undefined reference to `__imp_glHint' C:/Qt/Tools/mingw900_64/bin/../lib/gcc/x86_64-w64-mingw32/11.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles\opencv_highgui.dir/objects.a(window_QT.cpp.obj):window_QT.cpp:(.text$_ZN14OpenGlViewPort8resizeGLEii+0xd): undefined reference to `__imp_glViewport' C:/Qt/Tools/mingw900_64/bin/../lib/gcc/x86_64-w64-mingw32/11.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe: CMakeFiles\opencv_highgui.dir/objects.a(window_QT.cpp.obj):window_QT.cpp:(.text$_ZN14OpenGlViewPort7paintGLEv+0xf): undefined reference to `__imp_glClear' collect2.exe: error: ld returned 1 exit status mingw32-make[2]: *** [modules\highgui\CMakeFiles\opencv_highgui.dir\build.make:241: bin/libopencv_highgui455.dll] Error 1 mingw32-make[1]: *** [CMakeFiles\Makefile2:2697: modules/highgui/CMakeFiles/opencv_highgui.dir/all] Error 2 mingw32-make: *** [Makefile:165: all] Error 2 -
[ ] Take VBox Snapshot
-
[ ] Try Install OpenGL
-
[ ] Restart
mingw32-makeinC:\lang\opencv4\build -
[ ] Well ????
Targets
(Details on each in separate comments below.)
Windows - 32bit v4 Existing years old deployment based upon Qt4. Rock solid performance (with a few exceptions: #2, #6, #7). MSVC-based with OpenCV2.
Linux - 64bit v4 Bring forward source code and build in 64-bit Linux (Ubuntu 20.4 LTS for now). Qt6-based, GCC-toolchain, with OpenCV4 (v4.5.1 at the moment) build from source with CMake.
[ ] Regression Testing
Windows - 64bit v4 Bring forward source code and build in 64-bit Linux (Ubuntu 20.4 LTS for now). Qt6-based, GCC-toolchain, with OpenCV4 (v4.5.1 at the moment) build from source with CMake.
Linux - 64bit v6 Bring forward source code and build in 64-bit Linux (Ubuntu 20.4 LTS for now). Qt6-based, GCC-toolchain, with OpenCV4 (v4.5.1 at the moment) build from source with CMake.
Windows - 64bit v6
Other Issues