Trying to build openCV, not recognizing several packages with cmake

When trying to build the openCV project from source using cmake to enable several packages, FFMPEG, GStreamer, and GTK.

Here is exactly what I tried,

sudo apt-get install build-essential cmake git libgtk2.0-dev pkg-config libavcodec-dev libavformat-dev libswscale-dev python3-dev python3-numpy libtbb-dev libjpeg-dev libpng-dev libtiff-dev libdc1394-dev python3-pip python3-numpy
sudo apt-get -y install \
  autoconf \
  automake \
  build-essential \
  cmake \
  git-core \
  libass-dev \
  libfreetype6-dev \
  libgnutls28-dev \
  libsdl2-dev \
  libtool \
  libva-dev \
  libvdpau-dev \
  libvorbis-dev \
  libxcb1-dev \
  libxcb-shm0-dev \
  libxcb-xfixes0-dev \
  meson \
  ninja-build \
  pkg-config \
  texinfo \
  wget \
  yasm \
sudo apt-get -y install \
  libgstreamer1.0-dev \
  libgstreamer-plugins-base1.0-dev \
  libgstreamer-plugins-bad1.0-dev \
  gstreamer1.0-plugins-base \
  gstreamer1.0-plugins-good \
  gstreamer1.0-plugins-bad \
  gstreamer1.0-plugins-ugly \
  gstreamer1.0-libav \
  gstreamer1.0-tools \
  gstreamer1.0-x \
  gstreamer1.0-alsa \
  gstreamer1.0-gl \
  gstreamer1.0-gtk3 \
  gstreamer1.0-qt5 \

clone the repo

git clone

enter opencv dir

cd opencv

create build dir and enter

mkdir build && cd build


-D PYTHON_EXECUTABLE=$(which python2) \
-D BUILD_opencv_python2=OFF \
-D PYTHON3_EXECUTABLE=$(which python3) \
-D OPENCV_EXTRA_MODULES_PATH=../../opencv_contrib/modules \
-D PYTHON3_INCLUDE_DIR=$(python3 -c "from distutils.sysconfig import get_python_inc; print(get_python_inc())") \
-D PYTHON3_PACKAGES_PATH=$(python3 -c "from distutils.sysconfig import get_python_lib; print(get_python_lib())") \
-D BUILD_opencv_apps=OFF \
-D FFMPEG_LIBDIR="/usr/bin" \

Despite the dependencies being installed and declared in the configure stage, I get the following output saying most of those libs are not in use.

-- ocv_init_download: OpenCV source tree is not fetched as git repository. 3rdparty resources will be downloaded from by default.
-- Detected processor: x86_64
-- Looking for ccache - not found
-- Found ZLIB: /usr/lib/x86_64-linux-gnu/ (found suitable version "1.2.11", minimum required is "1.2.3") 
Cleaning INTERNAL cached variable: WEBP_LIBRARY
Cleaning INTERNAL cached variable: WEBP_INCLUDE_DIR
-- Could NOT find OpenJPEG (minimal suitable version: 2.0, recommended version >= 2.3.1). OpenJPEG will be built from sources
-- OpenJPEG: VERSION = 2.4.0, BUILD = opencv-4.6.0-openjp2-2.4.0
-- OpenJPEG libraries will be built from sources: libopenjp2 (version "2.4.0")
-- Found ZLIB: /usr/lib/x86_64-linux-gnu/ (found version "1.2.11") 
-- The imported target "Imath::PyImath_Python3_10" references the file
but this file does not exist.  Possible reasons include:
* The file was deleted, renamed, or moved to another location.
* An install or uninstall procedure did not complete successfully.
* The installation package was faulty and contained
but not all the files it references.

CMake Warning (dev) at /home/linuxbrew/.linuxbrew/Cellar/cmake/3.24.1/share/cmake/Modules/FindOpenGL.cmake:315 (message):
  Policy CMP0072 is not set: FindOpenGL prefers GLVND by default when
  available.  Run "cmake --help-policy CMP0072" for policy details.  Use the
  cmake_policy command to set the policy and suppress this warning.

  FindOpenGL found both a legacy GL library:

    OPENGL_gl_LIBRARY: /usr/lib/x86_64-linux-gnu/

  and GLVND libraries for OpenGL and GLX:

    OPENGL_opengl_LIBRARY: /usr/lib/x86_64-linux-gnu/
    OPENGL_glx_LIBRARY: /usr/lib/x86_64-linux-gnu/

  OpenGL_GL_PREFERENCE has not been set to "GLVND" or "LEGACY", so for
  compatibility with CMake 3.10 and below the legacy GL library will be used.
Call Stack (most recent call first):
  cmake/OpenCVFindLibsGUI.cmake:66 (find_package)
  CMakeLists.txt:731 (include)
This warning is for project developers.  Use -Wno-dev to suppress it.

-- Found TBB (cmake): _lib-NOTFOUND
-- found Intel IPP (ICV version): 2020.0.0 [2020.0.0 Gold]
-- at: /home/user/opencv/build/3rdparty/ippicv/ippicv_lnx/icv
-- found Intel IPP Integration Wrappers sources: 2020.0.0
-- at: /home/user/opencv/build/3rdparty/ippicv/ippicv_lnx/iw
-- Could not find OpenBLAS include. Turning OpenBLAS_FOUND off
-- Could not find OpenBLAS lib. Turning OpenBLAS_FOUND off
-- Could NOT find Atlas (missing: Atlas_CLAPACK_INCLUDE_DIR Atlas_CBLAS_LIBRARY Atlas_BLAS_LIBRARY) 
Picked up _JAVA_OPTIONS: -Dawt.useSystemAAFontSettings=on -Dswing.aatext=true
-- Found apache ant: /bin/ant (1.10.12)
-- VTK is not found. Please set -DVTK_DIR in CMake to VTK build directory, or to VTK install subdirectory with VTKConfig.cmake file
-- 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'
--   No package 'gthread-2.0' found
-- FFMPEG is disabled. Can't find suitable libavcodec library (minimal 54.35.0, found ).
-- FFMPEG is disabled. Can't find suitable libavformat library (minimal 54.20.4, found ).
-- FFMPEG is disabled. Can't find suitable libavutil library (minimal 52.3.0, found ).
-- FFMPEG is disabled. Can't find suitable libswscale library (minimal 2.1.1, found ).
-- FFMPEG libraries version check failed (minimal libav release 9.20, minimal FFMPEG release 1.1.16).
-- Checking for module 'gstreamer-base-1.0'
--   No package 'gstreamer-base-1.0' found
-- Checking for module 'gstreamer-app-1.0'
--   No package 'gstreamer-app-1.0' found
-- Checking for module 'gstreamer-riff-1.0'
--   No package 'gstreamer-riff-1.0' found
-- Checking for module 'gstreamer-pbutils-1.0'
--   No package 'gstreamer-pbutils-1.0' found
-- Checking for module 'gstreamer-video-1.0'
--   No package 'gstreamer-video-1.0' found
-- Checking for module 'gstreamer-audio-1.0'
--   No package 'gstreamer-audio-1.0' found
-- Checking for module 'libdc1394-2'
--   No package 'libdc1394-2' found
-- 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: 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': /home/user/opencv/modules/dnn/cmake/hooks/INIT_MODULE_SOURCES_opencv_dnn.cmake
-- opencv_dnn: filter out cuda4dnn source code
-- Excluding from source files list: <BUILD>/modules/dnn/layers/layers_common.rvv.cpp
-- highgui: using builtin backend: QT5
-- Found 'misc' Python modules from /home/user/opencv/modules/python/package/extra_modules
-- Found 'mat_wrapper;utils' Python modules from /home/user/opencv/modules/core/misc/python/package
-- Found 'gapi' Python modules from /home/user/opencv/modules/gapi/misc/python/package
-- OpenCL samples are skipped: OpenCL SDK is required
-- SYCL/OpenCL samples are skipped: SYCL SDK is required
--    - check configuration of SYCL_DIR/SYCL_ROOT/CMAKE_MODULE_PATH
--    - ensure that right compiler is selected from SYCL SDK (e.g, clang++): CMAKE_CXX_COMPILER=/usr/bin/c++
-- General configuration for OpenCV 4.6.0 =====================================
--   Version control:               unknown
--   Extra modules:
--     Location (extra):            /home/user/opencv_contrib/modules
--     Version control (extra):     4.6.0-75-g74fce7f7
--   Platform:
--     Timestamp:                   2022-09-24T00:01:37Z
--     Host:                        Linux 5.18.0-kali7-amd64 x86_64
--     CMake:                       3.24.1
--     CMake generator:             Unix Makefiles
--     CMake build tool:            /usr/bin/gmake
--     Configuration:               RELEASE
--   CPU/HW features:
--     Baseline:                    SSE SSE2 SSE3
--       requested:                 SSE3
--     Dispatched code generation:  SSE4_1 SSE4_2 FP16 AVX AVX2 AVX512_SKX
--       requested:                 SSE4_1 SSE4_2 AVX FP16 AVX2 AVX512_SKX
--       SSE4_1 (18 files):         + SSSE3 SSE4_1
--       SSE4_2 (2 files):          + SSSE3 SSE4_1 POPCNT SSE4_2
--       FP16 (1 files):            + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 AVX
--       AVX (5 files):             + SSSE3 SSE4_1 POPCNT SSE4_2 AVX
--       AVX2 (33 files):           + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 FMA3 AVX AVX2
--       AVX512_SKX (8 files):      + SSSE3 SSE4_1 POPCNT SSE4_2 FP16 FMA3 AVX AVX2 AVX_512F AVX512_COMMON AVX512_SKX
--   C/C++:
--     Built as dynamic libs?:      NO
--     C++ standard:                11
--     C++ Compiler:                /usr/bin/c++  (ver 12.2.0)
--     C++ flags (Release):         -fsigned-char -W -Wall -Wreturn-type -Wnon-virtual-dtor -Waddress -Wsequence-point -Wformat -Wformat-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Wsuggest-override -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections  -msse -msse2 -msse3 -fvisibility=hidden -fvisibility-inlines-hidden -O3 -DNDEBUG  -DNDEBUG
--     C++ flags (Debug):           -fsigned-char -W -Wall -Wreturn-type -Wnon-virtual-dtor -Waddress -Wsequence-point -Wformat -Wformat-security -Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wshadow -Wsign-promo -Wuninitialized -Wsuggest-override -Wno-delete-non-virtual-dtor -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections  -msse -msse2 -msse3 -fvisibility=hidden -fvisibility-inlines-hidden -g  -O0 -DDEBUG -D_DEBUG
--     C Compiler:                  /usr/bin/cc
--     C flags (Release):           -fsigned-char -W -Wall -Wreturn-type -Waddress -Wsequence-point -Wformat -Wformat-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections  -msse -msse2 -msse3 -fvisibility=hidden -O3 -DNDEBUG  -DNDEBUG
--     C flags (Debug):             -fsigned-char -W -Wall -Wreturn-type -Waddress -Wsequence-point -Wformat -Wformat-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Wno-comment -Wimplicit-fallthrough=3 -Wno-strict-overflow -fdiagnostics-show-option -Wno-long-long -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections  -msse -msse2 -msse3 -fvisibility=hidden -g  -O0 -DDEBUG -D_DEBUG
--     Linker flags (Release):      -Wl,--exclude-libs,libippicv.a -Wl,--exclude-libs,libippiw.a   -Wl,--gc-sections -Wl,--as-needed -Wl,--no-undefined  
--     Linker flags (Debug):        -Wl,--exclude-libs,libippicv.a -Wl,--exclude-libs,libippiw.a   -Wl,--gc-sections -Wl,--as-needed -Wl,--no-undefined  
--     ccache:                      NO
--     Precompiled headers:         NO
--     Extra dependencies:          va va-drm Qt5::Test Qt5::Concurrent Qt5::OpenGL /usr/lib/x86_64-linux-gnu/ /usr/lib/x86_64-linux-gnu/ OpenEXR::OpenEXR /usr/lib/x86_64-linux-gnu/ Qt5::Core Qt5::Gui Qt5::Widgets /usr/lib/x86_64-linux-gnu/ /usr/lib/x86_64-linux-gnu/ Iconv::Iconv dl m pthread rt
--     3rdparty dependencies:       libprotobuf ade ittnotify libwebp libtiff libopenjp2 quirc ippiw ippicv
--   OpenCV modules:
--     To be built:                 alphamat aruco barcode bgsegm bioinspired calib3d ccalib core cvv datasets dnn dnn_objdetect dnn_superres dpm face features2d flann fuzzy gapi hfs highgui img_hash imgcodecs imgproc intensity_transform java line_descriptor mcc ml objdetect optflow phase_unwrapping photo plot quality rapid reg rgbd saliency shape stereo stitching structured_light superres surface_matching text tracking ts video videoio videostab wechat_qrcode xfeatures2d ximgproc xobjdetect xphoto
--     Disabled:                    world
--     Disabled by dependency:      -
--     Unavailable:                 cudaarithm cudabgsegm cudacodec cudafeatures2d cudafilters cudaimgproc cudalegacy cudaobjdetect cudaoptflow cudastereo cudawarping cudev freetype hdf julia matlab ovis python2 python3 sfm viz
--     Applications:                tests perf_tests examples
--     Documentation:               NO
--     Non-free algorithms:         NO
--   GUI:                           QT5
--     QT:                          YES (ver 5.15.4 )
--       QT OpenGL support:         YES (Qt5::OpenGL 5.15.4)
--     GTK+:                        NO
--     OpenGL support:              YES (/usr/lib/x86_64-linux-gnu/ /usr/lib/x86_64-linux-gnu/
--     VTK support:                 NO
--   Media I/O: 
--     ZLib:                        /usr/lib/x86_64-linux-gnu/ (ver 1.2.11)
--     JPEG:                        /usr/lib/x86_64-linux-gnu/ (ver 62)
--     WEBP:                        build (ver encoder: 0x020f)
--     PNG:                         /usr/lib/x86_64-linux-gnu/ (ver 1.6.37)
--     TIFF:                        build (ver 42 - 4.2.0)
--     JPEG 2000:                   build (ver 2.4.0)
--     OpenEXR:                     OpenEXR::OpenEXR (ver 3.1.5)
--     GDAL:                        NO
--     HDR:                         YES
--     SUNRASTER:                   YES
--     PXM:                         YES
--     PFM:                         YES
--   Video I/O:
--     DC1394:                      NO
--     FFMPEG:                      NO
--       avcodec:                   NO
--       avformat:                  NO
--       avutil:                    NO
--       swscale:                   NO
--       avresample:                NO
--     GStreamer:                   NO
--     v4l/v4l2:                    YES (linux/videodev2.h)
--     Xine:                        NO
--   Parallel framework:            TBB (ver 2021.5 interface 12050)
--   Trace:                         YES (with Intel ITT)
--   Other third-party libraries:
--     Intel IPP:                   2020.0.0 Gold [2020.0.0]
--            at:                   /home/user/opencv/build/3rdparty/ippicv/ippicv_lnx/icv
--     Intel IPP IW:                sources (2020.0.0)
--               at:                /home/user/opencv/build/3rdparty/ippicv/ippicv_lnx/iw
--     VA:                          YES
--     Lapack:                      NO
--     Eigen:                       YES (ver 3.4.0)
--     Custom HAL:                  NO
--     Protobuf:                    build (3.19.1)
--   OpenCL:                        YES (INTELVA)
--     Include path:                /home/user/opencv/3rdparty/include/opencl/1.2
--     Link libraries:              Dynamic load
--   Python (for build):            /usr/bin/python2.7
--   Java:                          
--     ant:                         /bin/ant (ver 1.10.12)
--     JNI:                         /usr/lib/jvm/default-java/include /usr/lib/jvm/default-java/include/linux /usr/lib/jvm/default-java/include
--     Java wrappers:               YES
--     Java tests:                  YES
--   Install to:                    /usr/local
-- -----------------------------------------------------------------
-- Configuring done
-- Generating done

Have been scratching my head at this for a few days and am not sure what the next steps should be in getting openCV installed and working with the specified libs. The process for python was pretty simple with pip but building from src can cause quite the headache. Does anyone know what the possible issue could be?

you expect any headers or libs there ?