# Opencv 4.5+ c++ on Ubuntu 18.04 **URL:** \ **Category:** C++\ **Tags:** build\ **Created:** [September 14, 2021, 4:38pm UTC](https://forum.opencv.org/t/opencv-4-5-c-on-ubuntu-18-04/5212 "2021-09-14T16:38:26Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![design-lion](https://avatars.discourse-cdn.com/v4/letter/d/5fc32e/32.png) [@design-lion](https://forum.opencv.org/u/design-lion)\ **Post date:** [September 14, 2021, 4:38pm UTC](https://forum.opencv.org/t/opencv-4-5-c-on-ubuntu-18-04/5212/1 "2021-09-14T16:38:26Z")
is there a script for installing opencv 4.5+ c++ on Ubuntu 18.04? ---
**Author:** ![berak](https://avatars.discourse-cdn.com/v4/letter/b/85f322/32.png) [@berak](https://forum.opencv.org/u/berak)\ **Post date:** [September 14, 2021, 4:52pm UTC](https://forum.opencv.org/t/opencv-4-5-c-on-ubuntu-18-04/5212/2 "2021-09-14T16:52:11Z")
> [@design-lion](#): > > is there a script for installing opencv 4.5+ c++ on Ubuntu 18.04? if “script” means: install something prebuilt – forget the idea immediately. [build locally from github src](https://github.com/opencv/opencv_contrib#readme) ---
**Author:** ![design-lion](https://avatars.discourse-cdn.com/v4/letter/d/5fc32e/32.png) [@design-lion](https://forum.opencv.org/u/design-lion)\ **Post date:** [September 14, 2021, 5:04pm UTC](https://forum.opencv.org/t/opencv-4-5-c-on-ubuntu-18-04/5212/3 "2021-09-14T17:04:23Z")
I want to make opencv4+ c++ on Ubuntu18.04 Server. Can I give specific installation dependencies and cmake specific commands? I tried cmake many times and failed. ---
**Author:** ![berak](https://avatars.discourse-cdn.com/v4/letter/b/85f322/32.png) [@berak](https://forum.opencv.org/u/berak)\ **Post date:** [September 14, 2021, 5:13pm UTC](https://forum.opencv.org/t/opencv-4-5-c-on-ubuntu-18-04/5212/4 "2021-09-14T17:13:10Z")
> [@design-lion](#): > > I tried cmake many times and failed. show what you tried, and the resp. errors, then we can try to help ---
**Author:** ![design-lion](https://avatars.discourse-cdn.com/v4/letter/d/5fc32e/32.png) [@design-lion](https://forum.opencv.org/u/design-lion)\ **Post date:** [September 14, 2021, 5:56pm UTC](https://forum.opencv.org/t/opencv-4-5-c-on-ubuntu-18-04/5212/5 "2021-09-14T17:56:43Z")
```auto !sudo apt-get update ! sudo apt-get install -y cmake build-essential pkg-config ant \ libtiff5-dev libopenexr-dev libwebp-dev Libpng-dev \ libdc1394-22-dev libavcodec-dev libavformat-dev libswscale-dev libavresample-dev Libv4l-dev \ Libgtk-3-dev Libtesseract-dev Libhdf5-dev -y libopenblas-dev libopenblas-base Liblapacke-dev \ libgstreamer1.0-dev libgstreamer-plugins-base1.0-dev \ Libtbb-dev lists... Done Reading package lists... Done Building dependency tree Reading state information... Done E: Unable to locate package Libpng-dev E: Unable to locate package Libv4l-dev E: Unable to locate package Libgtk-3-dev E: Unable to locate package Libtesseract-dev E: Unable to locate package Libhdf5-dev E: Unable to locate package Liblapacke-dev E: Unable to locate package Libtbb-dev ``` ---
**Author:** ![design-lion](https://avatars.discourse-cdn.com/v4/letter/d/5fc32e/32.png) [@design-lion](https://forum.opencv.org/u/design-lion)\ **Post date:** [September 14, 2021, 5:59pm UTC](https://forum.opencv.org/t/opencv-4-5-c-on-ubuntu-18-04/5212/6 "2021-09-14T17:59:39Z")
```auto %cd opencv/build !cmake -D CMAKE_BUILD_TYPE=RELEASE \ -D CMAKE_INSTALL_PREFIX=/usr/local \ -D WITH_CUDA=OFF \ -D OPENCV_EXTRA_MODULES_PATH=/hy-nas/opencv_contrib/modules \ -D INSTALL_PYTHON_EXAMPLES=ON \ -D INSTALL_C_EXAMPLES=OFF \ -D PYTHON_EXECUTABLE=/usr/bin/python \ -D BUILD_opencv_python3=ON \ -D PYTHON3_EXECUTABLE=/usr/bin/python3.8 \ -D WITH_GSTREAMER=ON \ -D WITH_TBB=ON \ -D WITH_LIBV4L=ON .. \ -D OPENCV_ENABLE_NONFREE=ON \ -D WITH_PROTOBUF=ON \ -D BUILD_EXAMPLES=ON .. hy-nas/opencv/build -- Detected processor: x86_64 -- Could NOT find PythonInterp: Found unsuitable version "1.4", but required is at least "2.7" (found /usr/bin/python) -- Looking for ccache - not found -- Found ZLIB: /usr/lib/x86_64-linux-gnu/libz.so (found suitable version "1.2.11", minimum required is "1.2.3") -- Could NOT find JPEG (missing: JPEG_LIBRARY JPEG_INCLUDE_DIR) -- libjpeg-turbo: VERSION = 2.0.5, BUILD = opencv-4.5.0-libjpeg-turbo -- Could NOT find TIFF (missing: TIFF_LIBRARY TIFF_INCLUDE_DIR) -- Could NOT find OpenJPEG (minimal suitable version: 2.0, recommended version >= 2.3.1). OpenJPEG will be built from sources -- OpenJPEG: VERSION = 2.3.1, BUILD = opencv-4.5.0-openjp2-2.3.1 -- OpenJPEG libraries will be built from sources: libopenjp2 (version "2.3.1") -- Found ZLIB: /usr/lib/x86_64-linux-gnu/libz.so (found version "1.2.11") -- Could NOT find PNG (missing: PNG_LIBRARY PNG_PNG_INCLUDE_DIR) -- Checking for module 'gtk+-3.0' -- No package 'gtk+-3.0' found -- Checking for module 'gtk+-2.0' -- No package 'gtk+-2.0' found -- IPPICV: Download: ippicv_2020_lnx_intel64_20191018_general.tgz -- Try 1 failed CMake Warning at cmake/OpenCVDownload.cmake:202 (message): IPPICV: Download failed: 35;"SSL connect error" For details please refer to the download log file: /hy-nas/opencv/build/CMakeDownloadLog.txt Call Stack (most recent call first): 3rdparty/ippicv/ippicv.cmake:37 (ocv_download) cmake/OpenCVFindIPP.cmake:244 (download_ippicv) cmake/OpenCVFindLibsPerf.cmake:12 (include) CMakeLists.txt:696 (include) -- Could not find OpenBLAS include. Turning OpenBLAS_FOUND off -- Could not find OpenBLAS lib. Turning OpenBLAS_FOUND off -- Could NOT find Atlas (missing: Atlas_CBLAS_INCLUDE_DIR Atlas_CLAPACK_INCLUDE_DIR Atlas_CBLAS_LIBRARY Atlas_BLAS_LIBRARY Atlas_LAPACK_LIBRARY) -- A library with BLAS API not found. Please specify library location. -- LAPACK requires BLAS -- A library with LAPACK API not found. Please specify library location. -- Found apache ant: /usr/bin/ant (1.10.5) -- Could NOT find JNI (missing: JAVA_AWT_LIBRARY JAVA_JVM_LIBRARY JAVA_INCLUDE_PATH JAVA_INCLUDE_PATH2 JAVA_AWT_INCLUDE_PATH) -- Could NOT find Pylint (missing: PYLINT_EXECUTABLE) -- Could NOT find Flake8 (missing: FLAKE8_EXECUTABLE) -- VTK is not found. Please set -DVTK_DIR in CMake to VTK build directory, or to VTK install subdirectory with VTKConfig.cmake file -- OpenCV Python: during development append to PYTHONPATH: /hy-nas/opencv/build/python_loader -- Checking for modules 'libavcodec;libavformat;libavutil;libswscale' -- No package 'libavcodec' found -- No package 'libavformat' found -- No package 'libavutil' found -- No package 'libswscale' found -- FFMPEG is disabled. Required libraries: libavcodec;libavformat;libavutil;libswscale. Missing libraries: libavcodec;libavformat;libavutil;libswscale -- Checking for module 'libdc1394-2' -- No package 'libdc1394-2' found -- Module opencv_alphamat disabled because the following dependencies are not found: Eigen -- Caffe: NO -- Protobuf: NO -- Glog: NO -- Checking for module 'freetype2' -- No package 'freetype2' found -- Checking for module 'harfbuzz' -- No package 'harfbuzz' found -- freetype2: NO -- harfbuzz: NO -- Could NOT find HDF5 (missing: HDF5_LIBRARIES HDF5_INCLUDE_DIRS) (found version "") -- Julia not found. Not compiling Julia Bindings. -- Module opencv_ovis disabled because OGRE3D was not found -- No preference for use of exported gflags CMake configuration set, and no hints for include/library directories provided. Defaulting to preferring an installed/exported gflags CMake configuration if available. -- Failed to find installed gflags CMake configuration, searching for gflags build directories exported with CMake. -- Failed to find gflags - Failed to find an installed/exported CMake configuration for gflags, will perform search for installed gflags components. -- Failed to find gflags - Could not find gflags include directory, set GFLAGS_INCLUDE_DIR to directory containing gflags/gflags.h -- Failed to find glog - Could not find glog include directory, set GLOG_INCLUDE_DIR to directory containing glog/logging.h -- Module opencv_sfm disabled because the following dependencies are not found: Eigen Glog/Gflags -- Checking for module 'tesseract' -- No package 'tesseract' found -- Tesseract: NO -- Allocator metrics storage type: 'long long' -- Registering hook 'INIT_MODULE_SOURCES_opencv_dnn': /hy-nas/opencv/modules/dnn/cmake/hooks/INIT_MODULE_SOURCES_opencv_dnn.cmake -- opencv_dnn: filter out cuda4dnn source code -- xfeatures2d/boostdesc: Download: boostdesc_bgm.i ``` ---
**Author:** ![berak](https://avatars.discourse-cdn.com/v4/letter/b/85f322/32.png) [@berak](https://forum.opencv.org/u/berak)\ **Post date:** [September 14, 2021, 6:05pm UTC](https://forum.opencv.org/t/opencv-4-5-c-on-ubuntu-18-04/5212/7 "2021-09-14T18:05:06Z")
can you try again with the cmake output ? it’s incomplete (we need to see, if the configuration step failed or not, and why) ---
**Author:** ![design-lion](https://avatars.discourse-cdn.com/v4/letter/d/5fc32e/32.png) [@design-lion](https://forum.opencv.org/u/design-lion)\ **Post date:** [September 14, 2021, 6:31pm UTC](https://forum.opencv.org/t/opencv-4-5-c-on-ubuntu-18-04/5212/8 "2021-09-14T18:31:55Z")
​ !rm -r opencv/build !mkdir opencv/build %cd opencv/build !cmake -D CMAKE\_BUILD\_TYPE=RELEASE -D CMAKE\_INSTALL\_PREFIX=/usr/local -D INSTALL\_PYTHON\_EXAMPLES=ON -D INSTALL\_C\_EXAMPLES=0FF -D OPENCV\_ENABLE\_NONFREE=ON -D WITH\_CUDA=ON -D WITH\_CUDNN=ON -D OPENCV\_DNN\_CUDA=ON -D ENABLE\_FAST\_MATH=1 -D CUDA\_FAST\_MATH=1 -D CUDA\_ARCH\_BIN=7.5 -D WITH\_CUBLAS=1 -D OPENCV\_EXTRA\_MODULES\_PATH=/hy-nas/59/AlphaPose/opencv/opencv\_contrib/modules/ -D HAVE\_opencv\_python3=ON -D PYTHON\_EXECUTABLE=usr/bin/python3.8 -D BUILD\_EXAMPLES=ON … ​ ​ ​ /hy-nas/opencv/build – The CXX compiler identification is GNU 7.5.0 – The C compiler identification is GNU 7.5.0 – Check for working CXX compiler: /usr/bin/c++ – Check for working CXX compiler: /usr/bin/c++ – works – Detecting CXX compiler ABI info – Detecting CXX compiler ABI info - done – Detecting CXX compile features – Detecting CXX compile features - done – Check for working C compiler: /usr/bin/cc – Check for working C compiler: /usr/bin/cc – works – Detecting C compiler ABI info – Detecting C compiler ABI info - done – Detecting C compile features – Detecting C compile features - done – Detected processor: x86\_64 – Could NOT find PythonInterp: Found unsuitable version “1.4”, but required is at least “2.7” (found /hy-nas/opencv/build/usr/bin/python3.8) – Found PythonInterp: /usr/local/bin/python3 (found suitable version “3.8.10”, minimum required is “3.2”) – Found PythonLibs: /usr/lib/x86\_64-linux-gnu/libpython3.8.so (found suitable exact version “3.8.10”) – Looking for ccache - not found – Performing Test HAVE\_CXX\_FSIGNED\_CHAR – Performing Test HAVE\_CXX\_FSIGNED\_CHAR - Success – Performing Test HAVE\_C\_FSIGNED\_CHAR – Performing Test HAVE\_C\_FSIGNED\_CHAR - Success – Performing Test HAVE\_CXX\_FFAST\_MATH – Performing Test HAVE\_CXX\_FFAST\_MATH - Success – Performing Test HAVE\_C\_FFAST\_MATH – Performing Test HAVE\_C\_FFAST\_MATH - Success – Performing Test HAVE\_CXX\_W – Performing Test HAVE\_CXX\_W - Success – Performing Test HAVE\_C\_W – Performing Test HAVE\_C\_W - Success – Performing Test HAVE\_CXX\_WALL – Performing Test HAVE\_CXX\_WALL - Success – Performing Test HAVE\_C\_WALL – Performing Test HAVE\_C\_WALL - Success – Performing Test HAVE\_CXX\_WERROR\_RETURN\_TYPE – Performing Test HAVE\_CXX\_WERROR\_RETURN\_TYPE - Success – Performing Test HAVE\_C\_WERROR\_RETURN\_TYPE – Performing Test HAVE\_C\_WERROR\_RETURN\_TYPE - Success – Performing Test HAVE\_CXX\_WERROR\_NON\_VIRTUAL\_DTOR – Performing Test HAVE\_CXX\_WERROR\_NON\_VIRTUAL\_DTOR - Success – Performing Test HAVE\_C\_WERROR\_NON\_VIRTUAL\_DTOR – Performing Test HAVE\_C\_WERROR\_NON\_VIRTUAL\_DTOR - Failed – Performing Test HAVE\_CXX\_WERROR\_ADDRESS – Performing Test HAVE\_CXX\_WERROR\_ADDRESS - Success – Performing Test HAVE\_C\_WERROR\_ADDRESS – Performing Test HAVE\_C\_WERROR\_ADDRESS - Success – Performing Test HAVE\_CXX\_WERROR\_SEQUENCE\_POINT – Performing Test HAVE\_CXX\_WERROR\_SEQUENCE\_POINT - Success – Performing Test HAVE\_C\_WERROR\_SEQUENCE\_POINT – Performing Test HAVE\_C\_WERROR\_SEQUENCE\_POINT - Success – Performing Test HAVE\_CXX\_WFORMAT – Performing Test HAVE\_CXX\_WFORMAT - Success – Performing Test HAVE\_C\_WFORMAT – Performing Test HAVE\_C\_WFORMAT - Success – Performing Test HAVE\_CXX\_WERROR\_FORMAT\_SECURITY – Performing Test HAVE\_CXX\_WERROR\_FORMAT\_SECURITY - Success – Performing Test HAVE\_C\_WERROR\_FORMAT\_SECURITY – Performing Test HAVE\_C\_WERROR\_FORMAT\_SECURITY - Success – Performing Test HAVE\_CXX\_WMISSING\_DECLARATIONS – Performing Test HAVE\_CXX\_WMISSING\_DECLARATIONS - Success – Performing Test HAVE\_C\_WMISSING\_DECLARATIONS – Performing Test HAVE\_C\_WMISSING\_DECLARATIONS - Success – Performing Test HAVE\_CXX\_WMISSING\_PROTOTYPES – Performing Test HAVE\_CXX\_WMISSING\_PROTOTYPES - Failed – Performing Test HAVE\_C\_WMISSING\_PROTOTYPES – Performing Test HAVE\_C\_WMISSING\_PROTOTYPES - Success – Performing Test HAVE\_CXX\_WSTRICT\_PROTOTYPES – Performing Test HAVE\_CXX\_WSTRICT\_PROTOTYPES - Failed – Performing Test HAVE\_C\_WSTRICT\_PROTOTYPES – Performing Test HAVE\_C\_WSTRICT\_PROTOTYPES - Success – Performing Test HAVE\_CXX\_WUNDEF – Performing Test HAVE\_CXX\_WUNDEF - Success – Performing Test HAVE\_C\_WUNDEF – Performing Test HAVE\_C\_WUNDEF - Success – Performing Test HAVE\_CXX\_WINIT\_SELF – Performing Test HAVE\_CXX\_WINIT\_SELF - Success – Performing Test HAVE\_C\_WINIT\_SELF – Performing Test HAVE\_C\_WINIT\_SELF - Success – Performing Test HAVE\_CXX\_WPOINTER\_ARITH – Performing Test HAVE\_CXX\_WPOINTER\_ARITH - Success – Performing Test HAVE\_C\_WPOINTER\_ARITH – Performing Test HAVE\_C\_WPOINTER\_ARITH - Success – Performing Test HAVE\_CXX\_WSHADOW – Performing Test HAVE\_CXX\_WSHADOW - Success – Performing Test HAVE\_C\_WSHADOW – Performing Test HAVE\_C\_WSHADOW - Success – Performing Test HAVE\_CXX\_WSIGN\_PROMO – Performing Test HAVE\_CXX\_WSIGN\_PROMO - Success – Performing Test HAVE\_C\_WSIGN\_PROMO – Performing Test HAVE\_C\_WSIGN\_PROMO - Failed – Performing Test HAVE\_CXX\_WUNINITIALIZED – Performing Test HAVE\_CXX\_WUNINITIALIZED - Success – Performing Test HAVE\_C\_WUNINITIALIZED – Performing Test HAVE\_C\_WUNINITIALIZED - Success – Performing Test HAVE\_CXX\_WSUGGEST\_OVERRIDE – Performing Test HAVE\_CXX\_WSUGGEST\_OVERRIDE - Success – Performing Test HAVE\_C\_WSUGGEST\_OVERRIDE – Performing Test HAVE\_C\_WSUGGEST\_OVERRIDE - Failed – Performing Test HAVE\_CXX\_WNO\_DELETE\_NON\_VIRTUAL\_DTOR – Performing Test HAVE\_CXX\_WNO\_DELETE\_NON\_VIRTUAL\_DTOR - Success – Performing Test HAVE\_C\_WNO\_DELETE\_NON\_VIRTUAL\_DTOR – Performing Test HAVE\_C\_WNO\_DELETE\_NON\_VIRTUAL\_DTOR - Failed – Performing Test HAVE\_CXX\_WNO\_UNNAMED\_TYPE\_TEMPLATE\_ARGS – Performing Test HAVE\_CXX\_WNO\_UNNAMED\_TYPE\_TEMPLATE\_ARGS - Failed – Performing Test HAVE\_C\_WNO\_UNNAMED\_TYPE\_TEMPLATE\_ARGS – Performing Test HAVE\_C\_WNO\_UNNAMED\_TYPE\_TEMPLATE\_ARGS - Failed – Performing Test HAVE\_CXX\_WNO\_COMMENT – Performing Test HAVE\_CXX\_WNO\_COMMENT - Success – Performing Test HAVE\_C\_WNO\_COMMENT – Performing Test HAVE\_C\_WNO\_COMMENT - Success – Performing Test HAVE\_CXX\_WIMPLICIT\_FALLTHROUGH\_3 – Performing Test HAVE\_CXX\_WIMPLICIT\_FALLTHROUGH\_3 - Success – Performing Test HAVE\_C\_WIMPLICIT\_FALLTHROUGH\_3 – Performing Test HAVE\_C\_WIMPLICIT\_FALLTHROUGH\_3 - Success – Performing Test HAVE\_CXX\_WNO\_STRICT\_OVERFLOW – Performing Test HAVE\_CXX\_WNO\_STRICT\_OVERFLOW - Success – Performing Test HAVE\_C\_WNO\_STRICT\_OVERFLOW – Performing Test HAVE\_C\_WNO\_STRICT\_OVERFLOW - Success – Performing Test HAVE\_CXX\_FDIAGNOSTICS\_SHOW\_OPTION – Performing Test HAVE\_CXX\_FDIAGNOSTICS\_SHOW\_OPTION - Success – Performing Test HAVE\_C\_FDIAGNOSTICS\_SHOW\_OPTION – Performing Test HAVE\_C\_FDIAGNOSTICS\_SHOW\_OPTION - Success – Performing Test HAVE\_CXX\_WNO\_LONG\_LONG – Performing Test HAVE\_CXX\_WNO\_LONG\_LONG - Success – Performing Test HAVE\_C\_WNO\_LONG\_LONG – Performing Test HAVE\_C\_WNO\_LONG\_LONG - Success – Performing Test HAVE\_CXX\_PTHREAD – Performing Test HAVE\_CXX\_PTHREAD - Success – Performing Test HAVE\_C\_PTHREAD – Performing Test HAVE\_C\_PTHREAD - Success – Performing Test HAVE\_CXX\_FOMIT\_FRAME\_POINTER – Performing Test HAVE\_CXX\_FOMIT\_FRAME\_POINTER - Success – Performing Test HAVE\_C\_FOMIT\_FRAME\_POINTER – Performing Test HAVE\_C\_FOMIT\_FRAME\_POINTER - Success – Performing Test HAVE\_CXX\_FFUNCTION\_SECTIONS – Performing Test HAVE\_CXX\_FFUNCTION\_SECTIONS - Success – Performing Test HAVE\_C\_FFUNCTION\_SECTIONS – Performing Test HAVE\_C\_FFUNCTION\_SECTIONS - Success – Performing Test HAVE\_CXX\_FDATA\_SECTIONS – Performing Test HAVE\_CXX\_FDATA\_SECTIONS - Success – Performing Test HAVE\_C\_FDATA\_SECTIONS – Performing Test HAVE\_C\_FDATA\_SECTIONS - Success – Performing Test HAVE\_CXX\_MSSE (check file: cmake/checks/cpu\_sse.cpp) – Performing Test HAVE\_CXX\_MSSE - Success – Performing Test HAVE\_CXX\_MSSE2 (check file: cmake/checks/cpu\_sse2.cpp) – Performing Test HAVE\_CXX\_MSSE2 - Success – Performing Test HAVE\_CXX\_MSSE3 (check file: cmake/checks/cpu\_sse3.cpp) – Performing Test HAVE\_CXX\_MSSE3 - Success – Performing Test HAVE\_CXX\_MSSSE3 (check file: cmake/checks/cpu\_ssse3.cpp) – Performing Test HAVE\_CXX\_MSSSE3 - Success – Performing Test HAVE\_CXX\_MSSE4\_1 (check file: cmake/checks/cpu\_sse41.cpp) – Performing Test HAVE\_CXX\_MSSE4\_1 - Success – Performing Test HAVE\_CXX\_MPOPCNT (check file: cmake/checks/cpu\_popcnt.cpp) – Performing Test HAVE\_CXX\_MPOPCNT - Success – Performing Test HAVE\_CXX\_MSSE4\_2 (check file: cmake/checks/cpu\_sse42.cpp) – Performing Test HAVE\_CXX\_MSSE4\_2 - Success – Performing Test HAVE\_CXX\_MF16C (check file: cmake/checks/cpu\_fp16.cpp) – Performing Test HAVE\_CXX\_MF16C - Success – Performing Test HAVE\_CXX\_MFMA – Performing Test HAVE\_CXX\_MFMA - Success – Performing Test HAVE\_CXX\_MAVX (check file: cmake/checks/cpu\_avx.cpp) – Performing Test HAVE\_CXX\_MAVX - Success – Performing Test HAVE\_CXX\_MAVX2 (check file: cmake/checks/cpu\_avx2.cpp) – Performing Test HAVE\_CXX\_MAVX2 - Success – Performing Test HAVE\_CXX\_MAVX512F (check file: cmake/checks/cpu\_avx512.cpp) – Performing Test HAVE\_CXX\_MAVX512F - Success – Performing Test HAVE\_CXX\_MAVX512F\_MAVX512CD (check file: cmake/checks/cpu\_avx512common.cpp) – Performing Test HAVE\_CXX\_MAVX512F\_MAVX512CD - Success – Performing Test HAVE\_CXX\_MAVX512F\_MAVX512CD\_MAVX512VL\_MAVX512BW\_MAVX512DQ (check file: cmake/checks/cpu\_avx512skx.cpp) – Performing Test HAVE\_CXX\_MAVX512F\_MAVX512CD\_MAVX512VL\_MAVX512BW\_MAVX512DQ - Success – Performing Test HAVE\_CPU\_BASELINE\_FLAGS – Performing Test HAVE\_CPU\_BASELINE\_FLAGS - Success – Performing Test HAVE\_CPU\_DISPATCH\_FLAGS\_SSE4\_1 – Performing Test HAVE\_CPU\_DISPATCH\_FLAGS\_SSE4\_1 - Success – Performing Test HAVE\_CPU\_DISPATCH\_FLAGS\_SSE4\_2 – Performing Test HAVE\_CPU\_DISPATCH\_FLAGS\_SSE4\_2 - Success – Performing Test HAVE\_CPU\_DISPATCH\_FLAGS\_FP16 – Performing Test HAVE\_CPU\_DISPATCH\_FLAGS\_FP16 - Success – Performing Test HAVE\_CPU\_DISPATCH\_FLAGS\_AVX – Performing Test HAVE\_CPU\_DISPATCH\_FLAGS\_AVX - Success – Performing Test HAVE\_CPU\_DISPATCH\_FLAGS\_AVX2 – Performing Test HAVE\_CPU\_DISPATCH\_FLAGS\_AVX2 - Success – Performing Test HAVE\_CPU\_DISPATCH\_FLAGS\_AVX512\_SKX – Performing Test HAVE\_CPU\_DISPATCH\_FLAGS\_AVX512\_SKX - Success – Performing Test HAVE\_CXX\_FVISIBILITY\_HIDDEN – Performing Test HAVE\_CXX\_FVISIBILITY\_HIDDEN - Success – Performing Test HAVE\_C\_FVISIBILITY\_HIDDEN – Performing Test HAVE\_C\_FVISIBILITY\_HIDDEN - Success – Performing Test HAVE\_CXX\_FVISIBILITY\_INLINES\_HIDDEN – Performing Test HAVE\_CXX\_FVISIBILITY\_INLINES\_HIDDEN - Success – Performing Test HAVE\_C\_FVISIBILITY\_INLINES\_HIDDEN – Performing Test HAVE\_C\_FVISIBILITY\_INLINES\_HIDDEN - Failed – Performing Test HAVE\_LINK\_AS\_NEEDED – Performing Test HAVE\_LINK\_AS\_NEEDED - Success – Looking for pthread.h – Looking for pthread.h - found – Looking for posix\_memalign – Looking for posix\_memalign - found – Looking for malloc.h – Looking for malloc.h - found – Looking for memalign – Looking for memalign - found – Check if the system is big endian – Searching 16 bit integer – Looking for sys/types.h – Looking for sys/types.h - found – Looking for stdint.h – Looking for stdint.h - found – Looking for stddef.h – Looking for stddef.h - found – Check size of unsigned short – Check size of unsigned short - done – Using unsigned short – Check if the system is big endian - little endian – Found ZLIB: /usr/lib/x86\_64-linux-gnu/libz.so (found suitable version “1.2.11”, minimum required is “1.2.3”) – Could NOT find JPEG (missing: JPEG\_LIBRARY JPEG\_INCLUDE\_DIR) – Performing Test HAVE\_C\_WNO\_UNUSED\_PARAMETER – Performing Test HAVE\_C\_WNO\_UNUSED\_PARAMETER - Success – Performing Test HAVE\_C\_WNO\_SIGN\_COMPARE – Performing Test HAVE\_C\_WNO\_SIGN\_COMPARE - Success – Performing Test HAVE\_C\_WNO\_SHORTEN\_64\_TO\_32 – Performing Test HAVE\_C\_WNO\_SHORTEN\_64\_TO\_32 - Failed – Performing Test HAVE\_C\_WNO\_IMPLICIT\_FALLTHROUGH – Performing Test HAVE\_C\_WNO\_IMPLICIT\_FALLTHROUGH - Success – libjpeg-turbo: VERSION = 2.0.5, BUILD = opencv-4.5.0-libjpeg-turbo – Check size of size\_t – Check size of size\_t - done – Check size of unsigned long – Check size of unsigned long - done – Performing Test HAVE\_BUILTIN\_CTZL – Performing Test HAVE\_BUILTIN\_CTZL - Success – Looking for include file locale.h – Looking for include file locale.h - found – Looking for include file stdlib.h – Looking for include file stdlib.h - found – Looking for include file sys/types.h – Looking for include file sys/types.h - found – Could NOT find TIFF (missing: TIFF\_LIBRARY TIFF\_INCLUDE\_DIR) – Looking for assert.h – Looking for assert.h - found – Looking for dlfcn.h – Looking for dlfcn.h - found – Looking for fcntl.h – Looking for fcntl.h - found – Looking for inttypes.h – Looking for inttypes.h - found – Looking for io.h – Looking for io.h - not found – Looking for limits.h – Looking for limits.h - found – Looking for memory.h – Looking for memory.h - found – Looking for search.h – Looking for search.h - found – Looking for string.h – Looking for string.h - found – Looking for strings.h – Looking for strings.h - found – Looking for sys/time.h – Looking for sys/time.h - found – Looking for unistd.h – Looking for unistd.h - found – Performing Test C\_HAS\_inline – Performing Test C\_HAS\_inline - Success – Check size of signed short – Check size of signed short - done – Check size of unsigned short – Check size of unsigned short - done – Check size of signed int – Check size of signed int - done – Check size of unsigned int – Check size of unsigned int - done – Check size of signed long – Check size of signed long - done – Check size of signed long long – Check size of signed long long - done – Check size of unsigned long long – Check size of unsigned long long - done – Check size of unsigned char \* – Check size of unsigned char \* - done – Check size of ptrdiff\_t – Check size of ptrdiff\_t - done – Check size of INT8 – Check size of INT8 - failed – Check size of INT16 – Check size of INT16 - failed – Check size of INT32 – Check size of INT32 - failed – Looking for floor – Looking for floor - found – Looking for pow – Looking for pow - found – Looking for sqrt – Looking for sqrt - found – Looking for isascii – Looking for isascii - found – Looking for memset – Looking for memset - found – Looking for mmap – Looking for mmap - found – Looking for getopt – Looking for getopt - found – Looking for memmove – Looking for memmove - found – Looking for setmode – Looking for setmode - not found – Looking for strcasecmp – Looking for strcasecmp - found – Looking for strchr – Looking for strchr - found – Looking for strrchr – Looking for strrchr - found – Looking for strstr – Looking for strstr - found – Looking for strtol – Looking for strtol - found – Looking for strtol – Looking for strtol - found – Looking for strtoull – Looking for strtoull - found – Looking for lfind – Looking for lfind - found – Performing Test HAVE\_SNPRINTF – Performing Test HAVE\_SNPRINTF - Success – Check if the system is big endian – Searching 16 bit integer – Using unsigned short – Check if the system is big endian - little endian – Performing Test HAVE\_C\_WNO\_UNUSED\_BUT\_SET\_VARIABLE – Performing Test HAVE\_C\_WNO\_UNUSED\_BUT\_SET\_VARIABLE - Success – Performing Test HAVE\_C\_WNO\_MISSING\_PROTOTYPES – Performing Test HAVE\_C\_WNO\_MISSING\_PROTOTYPES - Success – Performing Test HAVE\_C\_WNO\_MISSING\_DECLARATIONS – Performing Test HAVE\_C\_WNO\_MISSING\_DECLARATIONS - Success – Performing Test HAVE\_C\_WNO\_UNDEF – Performing Test HAVE\_C\_WNO\_UNDEF - Success – Performing Test HAVE\_C\_WNO\_UNUSED – Performing Test HAVE\_C\_WNO\_UNUSED - Success – Performing Test HAVE\_C\_WNO\_CAST\_ALIGN – Performing Test HAVE\_C\_WNO\_CAST\_ALIGN - Success – Performing Test HAVE\_C\_WNO\_SHADOW – Performing Test HAVE\_C\_WNO\_SHADOW - Success – Performing Test HAVE\_C\_WNO\_MAYBE\_UNINITIALIZED – Performing Test HAVE\_C\_WNO\_MAYBE\_UNINITIALIZED - Success – Performing Test HAVE\_C\_WNO\_POINTER\_TO\_INT\_CAST – Performing Test HAVE\_C\_WNO\_POINTER\_TO\_INT\_CAST - Success – Performing Test HAVE\_C\_WNO\_INT\_TO\_POINTER\_CAST – Performing Test HAVE\_C\_WNO\_INT\_TO\_POINTER\_CAST - Success – Performing Test HAVE\_C\_WNO\_MISLEADING\_INDENTATION – Performing Test HAVE\_C\_WNO\_MISLEADING\_INDENTATION - Success – Performing Test HAVE\_CXX\_WNO\_MISSING\_DECLARATIONS – Performing Test HAVE\_CXX\_WNO\_MISSING\_DECLARATIONS - Success – Performing Test HAVE\_CXX\_WNO\_UNUSED\_PARAMETER – Performing Test HAVE\_CXX\_WNO\_UNUSED\_PARAMETER - Success – Performing Test HAVE\_CXX\_WNO\_MISSING\_PROTOTYPES – Performing Test HAVE\_CXX\_WNO\_MISSING\_PROTOTYPES - Failed – Performing Test HAVE\_CXX\_WNO\_UNDEF – Performing Test HAVE\_CXX\_WNO\_UNDEF - Success – Performing Test HAVE\_C\_STD\_C99 – Performing Test HAVE\_C\_STD\_C99 - Success – Performing Test HAVE\_C\_WNO\_UNUSED\_VARIABLE – Performing Test HAVE\_C\_WNO\_UNUSED\_VARIABLE - Success – Performing Test HAVE\_C\_WNO\_UNUSED\_FUNCTION – Performing Test HAVE\_C\_WNO\_UNUSED\_FUNCTION - Success – Could NOT find OpenJPEG (minimal suitable version: 2.0, recommended version \>= 2.3.1). OpenJPEG will be built from sources – OpenJPEG: VERSION = 2.3.1, BUILD = opencv-4.5.0-openjp2-2.3.1 – Check if the system is big endian – Searching 16 bit integer – Using unsigned short – Check if the system is big endian - little endian – Looking for stdio.h – Looking for stdio.h - found – Looking for math.h – Looking for math.h - found – Looking for float.h – Looking for float.h - found – Looking for time.h – Looking for time.h - found – Looking for stdarg.h – Looking for stdarg.h - found – Looking for ctype.h – Looking for ctype.h - found – Looking for stdint.h – Looking for stdint.h - found – Looking for inttypes.h – Looking for inttypes.h - found – Looking for sys/stat.h – Looking for sys/stat.h - found – Looking for include file malloc.h – Looking for include file malloc.h - found – Looking for \_aligned\_malloc – Looking for \_aligned\_malloc - not found – Looking for posix\_memalign – Looking for posix\_memalign - found – Looking for memalign – Looking for memalign - found – Performing Test HAVE\_C\_WNO\_STRICT\_PROTOTYPES – Performing Test HAVE\_C\_WNO\_STRICT\_PROTOTYPES - Success – Performing Test HAVE\_C\_WNO\_CAST\_FUNCTION\_TYPE – Performing Test HAVE\_C\_WNO\_CAST\_FUNCTION\_TYPE - Failed – OpenJPEG libraries will be built from sources: libopenjp2 (version “2.3.1”) – Found ZLIB: /usr/lib/x86\_64-linux-gnu/libz.so (found version “1.2.11”) – Could NOT find PNG (missing: PNG\_LIBRARY PNG\_PNG\_INCLUDE\_DIR) – Looking for semaphore.h – Looking for semaphore.h - found – Performing Test HAVE\_CXX\_WNO\_SHADOW – Performing Test HAVE\_CXX\_WNO\_SHADOW - Success – Performing Test HAVE\_CXX\_WNO\_UNUSED – Performing Test HAVE\_CXX\_WNO\_UNUSED - Success – Performing Test HAVE\_CXX\_WNO\_SIGN\_COMPARE – Performing Test HAVE\_CXX\_WNO\_SIGN\_COMPARE - Success – Performing Test HAVE\_CXX\_WNO\_UNINITIALIZED – Performing Test HAVE\_CXX\_WNO\_UNINITIALIZED - Success – Performing Test HAVE\_CXX\_WNO\_SWITCH – Performing Test HAVE\_CXX\_WNO\_SWITCH - Success – Performing Test HAVE\_CXX\_WNO\_PARENTHESES – Performing Test HAVE\_CXX\_WNO\_PARENTHESES - Success – Performing Test HAVE\_CXX\_WNO\_ARRAY\_BOUNDS – Performing Test HAVE\_CXX\_WNO\_ARRAY\_BOUNDS - Success – Performing Test HAVE\_CXX\_WNO\_EXTRA – Performing Test HAVE\_CXX\_WNO\_EXTRA - Success – Performing Test HAVE\_CXX\_WNO\_DEPRECATED\_DECLARATIONS – Performing Test HAVE\_CXX\_WNO\_DEPRECATED\_DECLARATIONS - Success – Performing Test HAVE\_CXX\_WNO\_MISLEADING\_INDENTATION – Performing Test HAVE\_CXX\_WNO\_MISLEADING\_INDENTATION - Success – Performing Test HAVE\_CXX\_WNO\_DEPRECATED – Performing Test HAVE\_CXX\_WNO\_DEPRECATED - Success – Performing Test HAVE\_CXX\_WNO\_SUGGEST\_OVERRIDE – Performing Test HAVE\_CXX\_WNO\_SUGGEST\_OVERRIDE - Success – Performing Test HAVE\_CXX\_WNO\_INCONSISTENT\_MISSING\_OVERRIDE – Performing Test HAVE\_CXX\_WNO\_INCONSISTENT\_MISSING\_OVERRIDE - Failed – Performing Test HAVE\_CXX\_WNO\_IMPLICIT\_FALLTHROUGH – Performing Test HAVE\_CXX\_WNO\_IMPLICIT\_FALLTHROUGH - Success – Performing Test HAVE\_CXX\_WNO\_TAUTOLOGICAL\_COMPARE – Performing Test HAVE\_CXX\_WNO\_TAUTOLOGICAL\_COMPARE - Success – Performing Test HAVE\_CXX\_WNO\_REORDER – Performing Test HAVE\_CXX\_WNO\_REORDER - Success – Performing Test HAVE\_CXX\_WNO\_UNUSED\_RESULT – Performing Test HAVE\_CXX\_WNO\_UNUSED\_RESULT - Success – Checking for module ‘gtk±3.0’ – No package ‘gtk±3.0’ found – Checking for module ‘gtk±2.0’ – No package ‘gtk±2.0’ found – Checking for module ‘gthread-2.0’ – Found gthread-2.0, version 2.56.4 – IPPICV: Download: ippicv\_2020\_lnx\_intel64\_20191018\_general.tgz ---
**Author:** ![design-lion](https://avatars.discourse-cdn.com/v4/letter/d/5fc32e/32.png) [@design-lion](https://forum.opencv.org/u/design-lion)\ **Post date:** [September 14, 2021, 6:56pm UTC](https://forum.opencv.org/t/opencv-4-5-c-on-ubuntu-18-04/5212/9 "2021-09-14T18:56:38Z")
Stop here and can’t carry on