System information (version)

• OpenCV => 4.2.0
• Operating System / Platform => ubuntu20.04 / ubuntu16.04
• Compiler => arm-linux-gnueabihf-gcc(4.9.4)

Detailed description

• build ffmpeg with arm-linux-gnueabihf-gcc( libz, x264, xvid), prefix:/workspace/arm_build/opencv_3thpart_lib
• add to /etc/profile,and source it
  export LD_LIBRARY_PATH=/workspace/arm_build/opencv_3thpart_lib/lib
export PKG_CONFIG_PATH=$PKG_CONFIG_PATH:/workspace/arm_build/opencv_3thpart_lib/lib/pkgconfig
export PKG_CONFIG_LIBDIR=$PKG_CONFIG_LIBDIR:/workspace/arm_build/opencv_3thpart_lib/lib
• add new file arm_toolchain.make
  set( CMAKE_SYSTEM_NAME Linux )
set( CMAKE_SYSTEM_PROCESSOR arm )
set( CMAKE_C_COMPILER arm-linux-gnueabihf-gcc )
set( CMAKE_CXX_COMPILER arm-linux-gnueabihf-g++ )
set( OPENCV_ENABLE_PKG_CONFIG ON)
set( CMAKE_FIND_ROOT_PATH "/workspace/arm_build/opencv_3thpart_lib/lib" )
set( CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER )
set( CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY )
set( CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY )
• build opencv info:
  -- The CXX compiler identification is GNU 4.9.4
  -- The C compiler identification is GNU 4.9.4
  -- Check for working CXX compiler: /workspace/arm-linux/gcc-linaro-4.9.4-2017.01-x86_64_arm-linux-gnueabihf/bin/arm-linux-gnueabihf-g++
  -- Check for working CXX compiler: /workspace/arm-linux/gcc-linaro-4.9.4-2017.01-x86_64_arm-linux-gnueabihf/bin/arm-linux-gnueabihf-g++ -- 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: /workspace/arm-linux/gcc-linaro-4.9.4-2017.01-x86_64_arm-linux-gnueabihf/bin/arm-linux-gnueabihf-gcc
  -- Check for working C compiler: /workspace/arm-linux/gcc-linaro-4.9.4-2017.01-x86_64_arm-linux-gnueabihf/bin/arm-linux-gnueabihf-gcc -- works
  -- Detecting C compiler ABI info
  -- Detecting C compiler ABI info - done
  -- Detecting C compile features
  -- Detecting C compile features - done
  -- Detected processor: arm
  -- Performing Test HAVE_CXX_ATOMICS_WITHOUT_LIB (check file: cmake/checks/atomic_check.cpp)
  -- Performing Test HAVE_CXX_ATOMICS_WITHOUT_LIB - Success
  -- Found PythonInterp: /usr/bin/python2.7 (found suitable version "2.7.18", minimum required is "2.7")
  -- Could NOT find PythonLibs (missing: PYTHON_LIBRARIES PYTHON_INCLUDE_DIRS) (Required is at least version "2.7")
  -- Cannot probe for Python/Numpy support (because we are cross-compiling OpenCV)
  -- If you want to enable Python/Numpy support, set the following variables:
  -- PYTHON2_INCLUDE_PATH
  -- PYTHON2_LIBRARIES (optional on Unix-like systems)
  -- PYTHON2_NUMPY_INCLUDE_DIRS
  -- PYTHON3_INCLUDE_PATH
  -- PYTHON3_LIBRARIES (optional on Unix-like systems)
  -- PYTHON3_NUMPY_INCLUDE_DIRS
  -- Found PythonInterp: /usr/bin/python3 (found suitable version "3.8.5", minimum required is "3.2")
  -- Could NOT find PythonLibs (missing: PYTHON_LIBRARIES PYTHON_INCLUDE_DIRS) (Required is at least version "3.8")
  -- Cannot probe for Python/Numpy support (because we are cross-compiling OpenCV)
  -- If you want to enable Python/Numpy support, set the following variables:
  -- PYTHON2_INCLUDE_PATH
  -- PYTHON2_LIBRARIES (optional on Unix-like systems)
  -- PYTHON2_NUMPY_INCLUDE_DIRS
  -- PYTHON3_INCLUDE_PATH
  -- PYTHON3_LIBRARIES (optional on Unix-like systems)
  -- PYTHON3_NUMPY_INCLUDE_DIRS
  -- Looking for ccache - found (/usr/bin/ccache)
  -- 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_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 - Success
  -- 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_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 - Failed
  -- 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_WNO_MISSING_FIELD_INITIALIZERS
  -- Performing Test HAVE_CXX_WNO_MISSING_FIELD_INITIALIZERS - Success
  -- Performing Test HAVE_C_WNO_MISSING_FIELD_INITIALIZERS
  -- Performing Test HAVE_C_WNO_MISSING_FIELD_INITIALIZERS - 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_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_MFPU_VFPV3
  -- Performing Test HAVE_CXX_MFPU_VFPV3 - Success
  -- Performing Test HAVE_CPU_NEON_SUPPORT (check file: cmake/checks/cpu_neon.cpp)
  -- Performing Test HAVE_CPU_NEON_SUPPORT - Failed
  -- Performing Test HAVE_CXX_MFPU_NEON (check file: cmake/checks/cpu_neon.cpp)
  -- Performing Test HAVE_CXX_MFPU_NEON - Success
  -- Performing Test HAVE_CPU_FP16_SUPPORT (check file: cmake/checks/cpu_fp16.cpp)
  -- Performing Test HAVE_CPU_FP16_SUPPORT - Failed
  -- Performing Test HAVE_CXX_MFPU_NEON_FP16_MFP16_FORMAT_IEEE (check file: cmake/checks/cpu_fp16.cpp)
  -- Performing Test HAVE_CXX_MFPU_NEON_FP16_MFP16_FORMAT_IEEE - Success
  -- Performing Test HAVE_CPU_BASELINE_FLAGS
  -- Performing Test HAVE_CPU_BASELINE_FLAGS - 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
  -- 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
  -- Could NOT find ZLIB (missing: ZLIB_LIBRARY ZLIB_INCLUDE_DIR) (Required is at least version "1.2.3")
  -- Looking for fseeko
  -- Looking for fseeko - found
  -- Looking for unistd.h
  -- Looking for unistd.h - found
  -- Check size of off64_t
  -- Check size of off64_t - failed
  -- Performing Test HAVE_C_WNO_SHORTEN_64_TO_32
  -- Performing Test HAVE_C_WNO_SHORTEN_64_TO_32 - Failed
  -- Performing Test HAVE_C_WNO_ATTRIBUTES
  -- Performing Test HAVE_C_WNO_ATTRIBUTES - Success
  -- Performing Test HAVE_C_WNO_STRICT_PROTOTYPES
  -- Performing Test HAVE_C_WNO_STRICT_PROTOTYPES - 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_SHIFT_NEGATIVE_VALUE
  -- Performing Test HAVE_C_WNO_SHIFT_NEGATIVE_VALUE - Failed
  -- Performing Test HAVE_C_WNO_UNDEF
  -- Performing Test HAVE_C_WNO_UNDEF - Success
  -- Performing Test HAVE_C_WNO_IMPLICIT_FALLTHROUGH
  -- Performing Test HAVE_C_WNO_IMPLICIT_FALLTHROUGH - Failed
  -- 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
  -- libjpeg-turbo: VERSION = 2.0.2, BUILD = opencv-4.2.0-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 - not found
  -- Looking for pow
  -- Looking for pow - not found
  -- Looking for sqrt
  -- Looking for sqrt - not 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_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 - Failed
  -- 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
  -- Found JPEG: libjpeg-turbo
  -- Could NOT find Jasper (missing: JASPER_LIBRARIES JASPER_INCLUDE_DIR)
  -- Performing Test HAVE_C_WNO_IMPLICIT_FUNCTION_DECLARATION
  -- Performing Test HAVE_C_WNO_IMPLICIT_FUNCTION_DECLARATION - Success
  -- Performing Test HAVE_C_WNO_UNINITIALIZED
  -- Performing Test HAVE_C_WNO_UNINITIALIZED - Success
  -- Performing Test HAVE_C_WNO_UNUSED_BUT_SET_PARAMETER
  -- Performing Test HAVE_C_WNO_UNUSED_BUT_SET_PARAMETER - Success
  -- Performing Test HAVE_C_WNO_STRICT_OVERFLOW
  -- Performing Test HAVE_C_WNO_STRICT_OVERFLOW - Success
  -- Performing Test HAVE_C_WNO_POINTER_COMPARE
  -- Performing Test HAVE_C_WNO_POINTER_COMPARE - Failed
  -- Performing Test HAVE_C_WNO_ABSOLUTE_VALUE
  -- Performing Test HAVE_C_WNO_ABSOLUTE_VALUE - Failed
  -- Could NOT find ZLIB (missing: ZLIB_INCLUDE_DIR) (found version "1.2.11")
  -- Could NOT find PNG (missing: PNG_LIBRARY PNG_PNG_INCLUDE_DIR)
  -- math lib 'libm' not found; floating point support disabled
  -- 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
  -- 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)
  -- Looking for sgemm_
  -- Looking for sgemm_ - not found
  -- Looking for pthread.h
  -- Looking for pthread.h - found
  -- Performing Test CMAKE_HAVE_LIBC_PTHREAD
  -- Performing Test CMAKE_HAVE_LIBC_PTHREAD - Success
  -- Found Threads: TRUE
  -- Could NOT find BLAS (missing: BLAS_LIBRARIES)
  -- LAPACK requires BLAS
  -- A library with LAPACK API not found. Please specify library location.
  -- Performing Test HAVE_CXX_WNO_DEPRECATED
  -- Performing Test HAVE_CXX_WNO_DEPRECATED - Success
  -- Performing Test HAVE_CXX_WNO_SHADOW
  -- Performing Test HAVE_CXX_WNO_SHADOW - Success
  -- Performing Test HAVE_CXX_WNO_UNUSED_LOCAL_TYPEDEFS
  -- Performing Test HAVE_CXX_WNO_UNUSED_LOCAL_TYPEDEFS - Success
  -- Performing Test HAVE_CXX_WNO_SIGN_COMPARE
  -- Performing Test HAVE_CXX_WNO_SIGN_COMPARE - Success
  -- Performing Test HAVE_CXX_WNO_SIGN_PROMO
  -- Performing Test HAVE_CXX_WNO_SIGN_PROMO - Success
  -- Performing Test HAVE_CXX_WNO_TAUTOLOGICAL_UNDEFINED_COMPARE
  -- Performing Test HAVE_CXX_WNO_TAUTOLOGICAL_UNDEFINED_COMPARE - Failed
  -- Performing Test HAVE_CXX_WNO_IGNORED_QUALIFIERS
  -- Performing Test HAVE_CXX_WNO_IGNORED_QUALIFIERS - Success
  -- Performing Test HAVE_CXX_WNO_EXTRA
  -- Performing Test HAVE_CXX_WNO_EXTRA - Success
  -- Performing Test HAVE_CXX_WNO_UNUSED_FUNCTION
  -- Performing Test HAVE_CXX_WNO_UNUSED_FUNCTION - Success
  -- Performing Test HAVE_CXX_WNO_UNUSED_CONST_VARIABLE
  -- Performing Test HAVE_CXX_WNO_UNUSED_CONST_VARIABLE - Failed
  -- Performing Test HAVE_CXX_WNO_SHORTEN_64_TO_32
  -- Performing Test HAVE_CXX_WNO_SHORTEN_64_TO_32 - Failed
  -- Performing Test HAVE_CXX_WNO_INVALID_OFFSETOF
  -- Performing Test HAVE_CXX_WNO_INVALID_OFFSETOF - Success
  -- Performing Test HAVE_CXX_WNO_ENUM_COMPARE_SWITCH
  -- Performing Test HAVE_CXX_WNO_ENUM_COMPARE_SWITCH - Failed
  -- Performing Test HAVE_CXX_WNO_SUGGEST_OVERRIDE
  -- Performing Test HAVE_CXX_WNO_SUGGEST_OVERRIDE - Failed
  -- 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 - Failed
  -- Performing Test HAVE_CXX_WNO_ARRAY_BOUNDS
  -- Performing Test HAVE_CXX_WNO_ARRAY_BOUNDS - Success
  -- Performing Test CXX_HAS_MFPU_NEON
  -- Performing Test CXX_HAS_MFPU_NEON - Success
  -- Performing Test C_HAS_MFPU_NEON
  -- Performing Test C_HAS_MFPU_NEON - Success
  -- Looking for dlerror in dl
  -- Looking for dlerror in dl - found
  -- ADE: Download: v0.1.1f.zip
  -- OpenCV Python: during development append to PYTHONPATH: /workspace/arm/opencv-4.2.0/build/python_loader
  -- Checking for modules 'libavcodec;libavformat;libavutil;libswscale'
  -- Found libavcodec, version 58.54.100
  -- Found libavformat, version 58.29.100
  -- Found libavutil, version 56.31.100
  -- Found libswscale, version 5.5.100
  CMake Warning at cmake/OpenCVUtils.cmake:845 (message):
  ocv_check_modules(FFMPEG): can't find library 'avcodec'. Specify
  'pkgcfg_lib_FFMPEG_avcodec' manually
  Call Stack (most recent call first):
  modules/videoio/cmake/detect_ffmpeg.cmake:28 (ocv_check_modules)
  modules/videoio/cmake/init.cmake:3 (include)
  modules/videoio/cmake/init.cmake:22 (add_backend)
  cmake/OpenCVModule.cmake:312 (include)
  cmake/OpenCVModule.cmake:375 (_add_modules_1)
  modules/CMakeLists.txt:7 (ocv_glob_modules)

CMake Warning at cmake/OpenCVUtils.cmake:845 (message):
ocv_check_modules(FFMPEG): can't find library 'avformat'. Specify
'pkgcfg_lib_FFMPEG_avformat' manually
Call Stack (most recent call first):
modules/videoio/cmake/detect_ffmpeg.cmake:28 (ocv_check_modules)
modules/videoio/cmake/init.cmake:3 (include)
modules/videoio/cmake/init.cmake:22 (add_backend)
cmake/OpenCVModule.cmake:312 (include)
cmake/OpenCVModule.cmake:375 (_add_modules_1)
modules/CMakeLists.txt:7 (ocv_glob_modules)

CMake Warning at cmake/OpenCVUtils.cmake:845 (message):
ocv_check_modules(FFMPEG): can't find library 'avutil'. Specify
'pkgcfg_lib_FFMPEG_avutil' manually
Call Stack (most recent call first):
modules/videoio/cmake/detect_ffmpeg.cmake:28 (ocv_check_modules)
modules/videoio/cmake/init.cmake:3 (include)
modules/videoio/cmake/init.cmake:22 (add_backend)
cmake/OpenCVModule.cmake:312 (include)
cmake/OpenCVModule.cmake:375 (_add_modules_1)
modules/CMakeLists.txt:7 (ocv_glob_modules)

CMake Warning at cmake/OpenCVUtils.cmake:845 (message):
ocv_check_modules(FFMPEG): can't find library 'swscale'. Specify
'pkgcfg_lib_FFMPEG_swscale' manually
Call Stack (most recent call first):
modules/videoio/cmake/detect_ffmpeg.cmake:28 (ocv_check_modules)
modules/videoio/cmake/init.cmake:3 (include)
modules/videoio/cmake/init.cmake:22 (add_backend)
cmake/OpenCVModule.cmake:312 (include)
cmake/OpenCVModule.cmake:375 (_add_modules_1)
modules/CMakeLists.txt:7 (ocv_glob_modules)

-- Checking for module 'libavresample'
-- No package 'libavresample' found
-- FFMPEG_INCLUDE_DIRS=/workspace/arm_build/opencv_3thpart_lib/include
CMake Error at modules/videoio/cmake/detect_ffmpeg.cmake:50 (message):
FFMPEG: test check build log:

Change Dir: /workspace/arm/opencv-4.2.0/build/CMakeFiles/CMakeTmp

Run Build Command(s):/usr/bin/make cmTC_531cf/fast && /usr/bin/make -f
CMakeFiles/cmTC_531cf.dir/build.make CMakeFiles/cmTC_531cf.dir/build

make[1]: Entering directory
'/workspace/arm/opencv-4.2.0/build/CMakeFiles/CMakeTmp'

Building CXX object CMakeFiles/cmTC_531cf.dir/ffmpeg_test.cpp.o

/workspace/arm-linux/gcc-linaro-4.9.4-2017.01-x86_64_arm-linux-gnueabihf/bin/arm-linux-gnueabihf-g++
-I/workspace/arm_build/opencv_3thpart_lib/include -fsigned-char -W -Wall
-Werror=return-type -Werror=non-virtual-dtor -Werror=address
-Werror=sequence-point -Wformat -Werror=format-security
-Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wsign-promo
-Wuninitialized -Winit-self -Wno-delete-non-virtual-dtor -Wno-comment
-Wno-missing-field-initializers -fdiagnostics-show-option -pthread
-fomit-frame-pointer -ffunction-sections -fdata-sections
-fvisibility=hidden -fvisibility-inlines-hidden -O3 -DNDEBUG -fPIE
-std=c++11 -o CMakeFiles/cmTC_531cf.dir/ffmpeg_test.cpp.o -c
/workspace/arm/opencv-4.2.0/cmake/checks/ffmpeg_test.cpp

Linking CXX executable cmTC_531cf

/usr/bin/cmake -E cmake_link_script CMakeFiles/cmTC_531cf.dir/link.txt
--verbose=1

/workspace/arm-linux/gcc-linaro-4.9.4-2017.01-x86_64_arm-linux-gnueabihf/bin/arm-linux-gnueabihf-g++
-fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor
-Werror=address -Werror=sequence-point -Wformat -Werror=format-security
-Wmissing-declarations -Wundef -Winit-self -Wpointer-arith -Wsign-promo
-Wuninitialized -Winit-self -Wno-delete-non-virtual-dtor -Wno-comment
-Wno-missing-field-initializers -fdiagnostics-show-option -pthread
-fomit-frame-pointer -ffunction-sections -fdata-sections
-fvisibility=hidden -fvisibility-inlines-hidden -O3 -DNDEBUG
-Wl,--gc-sections CMakeFiles/cmTC_531cf.dir/ffmpeg_test.cpp.o -o cmTC_531cf
-lavcodec -lavformat -lavutil -lswscale

/workspace/arm-linux/gcc-linaro-4.9.4-2017.01-x86_64_arm-linux-gnueabihf/bin/../lib/gcc/arm-linux-gnueabihf/4.9.4/../../../../arm-linux-gnueabihf/bin/ld:
cannot find -lavcodec

/workspace/arm-linux/gcc-linaro-4.9.4-2017.01-x86_64_arm-linux-gnueabihf/bin/../lib/gcc/arm-linux-gnueabihf/4.9.4/../../../../arm-linux-gnueabihf/bin/ld:
cannot find -lavformat

/workspace/arm-linux/gcc-linaro-4.9.4-2017.01-x86_64_arm-linux-gnueabihf/bin/../lib/gcc/arm-linux-gnueabihf/4.9.4/../../../../arm-linux-gnueabihf/bin/ld:
cannot find -lavutil

/workspace/arm-linux/gcc-linaro-4.9.4-2017.01-x86_64_arm-linux-gnueabihf/bin/../lib/gcc/arm-linux-gnueabihf/4.9.4/../../../../arm-linux-gnueabihf/bin/ld:
cannot find -lswscale

collect2: error: ld returned 1 exit status

make[1]: *** [CMakeFiles/cmTC_531cf.dir/build.make:87: cmTC_531cf] Error 1

make[1]: Leaving directory
'/workspace/arm/opencv-4.2.0/build/CMakeFiles/CMakeTmp'

make: *** [Makefile:121: cmTC_531cf/fast] Error 2

Call Stack (most recent call first):
modules/videoio/cmake/init.cmake:3 (include)
modules/videoio/cmake/init.cmake:22 (add_backend)
cmake/OpenCVModule.cmake:312 (include)
cmake/OpenCVModule.cmake:375 (_add_modules_1)
modules/CMakeLists.txt:7 (ocv_glob_modules)

-- Configuring incomplete, errors occurred!
See also "/workspace/arm/opencv-4.2.0/build/CMakeFiles/CMakeOutput.log".
See also "/workspace/arm/opencv-4.2.0/build/CMakeFiles/CMakeError.log".
CMake Warning:
Value of OPENCV_BUILD_INFO_STR contained a newline; truncating

dump like this

pkg-config --libs libavcodec
-L/workspace/arm_build/opencv_3thpart_lib/lib -lavcodec
pkg-config --cflags libavcodec
-I/workspace/arm_build/opencv_3thpart_lib/include