Cmake не может распознать Java при сборке OpenCv

Cmake не может распознать Java при сборке OpenCv ⇐ C++

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Anonymous

Cmake не может распознать Java при сборке OpenCv

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Сообщение Anonymous » 22 окт 2025, 16:40

Я пытаюсь собрать OpenCv на Khadas Vim2 с предустановленной Ubuntu Mate с архитектурой процессора на базе arm 64-бит, используя CMake. Однако CMake не распознает Java (

Код: Выделить всё

where i already have both oracle-jdk-1.8 and openjdk-1.8). Я попытался переустановить Apache Ant, экспортировав JAVA_HOME

и ANT_HOME в PATH через:

Код: Выделить всё

export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-arm64
export PATH=$JAVA_HOME/bin:$PATH
export ANT_HOME=/usr/local/ant
export PATH=$ANT_HOME/bin:$PATH

Я также пытался установить компиляторы GCC и G++ в файле цепочки инструментов следующим образом:

Код: Выделить всё

set( CMAKE_SYSTEM_PROCESSOR arm )
set( CMAKE_C_COMPILER arm-linux-gnueabi-gcc )
set( CMAKE_CXX_COMPILER arm-linux-gnueabi-g++ )

if(COMMAND toolchain_save_config)
return() # prevent recursive call
endif()

set(CMAKE_SYSTEM_NAME Linux)
set(CMAKE_SYSTEM_VERSION 1)
if(NOT DEFINED CMAKE_SYSTEM_PROCESSOR)
set(CMAKE_SYSTEM_PROCESSOR arm)
else()
#message("CMAKE_SYSTEM_PROCESSOR=${CMAKE_SYSTEM_PROCESSOR}")
endif()

include("${CMAKE_CURRENT_LIST_DIR}/gnu.toolchain.cmake")

if(CMAKE_SYSTEM_PROCESSOR STREQUAL arm AND NOT ARM_IGNORE_FP)
set(FLOAT_ABI_SUFFIX "")
if(NOT SOFTFP)
set(FLOAT_ABI_SUFFIX "hf")
endif()
endif()

if(NOT "x${GCC_COMPILER_VERSION}" STREQUAL "x")
set(__GCC_VER_SUFFIX "-${GCC_COMPILER_VERSION}")
endif()

if(NOT DEFINED CMAKE_C_COMPILER)
find_program(CMAKE_C_COMPILER NAMES ${GNU_MACHINE}${FLOAT_ABI_SUFFIX}-gcc${__GCC_VER_SUFFIX})
else()
#message(WARNING "CMAKE_C_COMPILER=${CMAKE_C_COMPILER} is defined")
endif()
if(NOT DEFINED CMAKE_CXX_COMPILER)
find_program(CMAKE_CXX_COMPILER NAMES ${GNU_MACHINE}${FLOAT_ABI_SUFFIX}-g++${__GCC_VER_SUFFIX})
else()
#message(WARNING "CMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER} is defined")
endif()
if(NOT DEFINED CMAKE_LINKER)
find_program(CMAKE_LINKER NAMES ${GNU_MACHINE}${FLOAT_ABI_SUFFIX}-ld${__GCC_VER_SUFFIX} ${GNU_MACHINE}${FLOAT_ABI_SUFFIX}-ld)
else()
#message(WARNING "CMAKE_LINKER=${CMAKE_LINKER} is defined")
endif()
if(NOT DEFINED CMAKE_AR)
find_program(CMAKE_AR NAMES ${GNU_MACHINE}${FLOAT_ABI_SUFFIX}-ar${__GCC_VER_SUFFIX} ${GNU_MACHINE}${FLOAT_ABI_SUFFIX}-ar)
else()
#message(WARNING "CMAKE_AR=${CMAKE_AR} is defined")
endif()

if(NOT DEFINED ARM_LINUX_SYSROOT AND DEFINED GNU_MACHINE)
set(ARM_LINUX_SYSROOT /usr/${GNU_MACHINE}${FLOAT_ABI_SUFFIX})
endif()

if(NOT DEFINED CMAKE_CXX_FLAGS)
set(CMAKE_CXX_FLAGS           "" CACHE INTERNAL "")
set(CMAKE_C_FLAGS             "" CACHE INTERNAL "")
set(CMAKE_SHARED_LINKER_FLAGS "" CACHE INTERNAL "")
set(CMAKE_MODULE_LINKER_FLAGS "" CACHE INTERNAL "")
set(CMAKE_EXE_LINKER_FLAGS    "" CACHE INTERNAL "")

set(CMAKE_CXX_FLAGS           "${CMAKE_CXX_FLAGS} -fdata-sections -Wa,--noexecstack -fsigned-char -Wno-psabi")
set(CMAKE_C_FLAGS             "${CMAKE_C_FLAGS} -fdata-sections -Wa,--noexecstack -fsigned-char -Wno-psabi")
if(CMAKE_SYSTEM_PROCESSOR STREQUAL arm)
set(CMAKE_CXX_FLAGS           "-mthumb ${CMAKE_CXX_FLAGS}")
set(CMAKE_C_FLAGS             "-mthumb ${CMAKE_C_FLAGS}")
set(CMAKE_EXE_LINKER_FLAGS    "${CMAKE_EXE_LINKER_FLAGS} -Wl,-z,nocopyreloc")
endif()
if(CMAKE_SYSTEM_PROCESSOR STREQUAL arm)
set(ARM_LINKER_FLAGS "-Wl,--fix-cortex-a8 -Wl,--no-undefined -Wl,--gc-sections -Wl,-z,noexecstack -Wl,-z,relro -Wl,-z,now")
elseif(CMAKE_SYSTEM_PROCESSOR STREQUAL aarch64)
set(ARM_LINKER_FLAGS "-Wl,--no-undefined -Wl,--gc-sections -Wl,-z,noexecstack -Wl,-z,relro -Wl,-z,now")
endif()
set(CMAKE_SHARED_LINKER_FLAGS "${ARM_LINKER_FLAGS} ${CMAKE_SHARED_LINKER_FLAGS}")
set(CMAKE_MODULE_LINKER_FLAGS "${ARM_LINKER_FLAGS} ${CMAKE_MODULE_LINKER_FLAGS}")
set(CMAKE_EXE_LINKER_FLAGS    "${ARM_LINKER_FLAGS} ${CMAKE_EXE_LINKER_FLAGS}")
else()
#message(WARNING "CMAKE_CXX_FLAGS='${CMAKE_CXX_FLAGS}' is defined")
endif()

if(USE_NEON)
message(WARNING "You use obsolete variable USE_NEON to enable NEON instruction set. Use -DENABLE_NEON=ON instead." )
set(ENABLE_NEON TRUE)
elseif(USE_VFPV3)
message(WARNING "You use obsolete variable USE_VFPV3 to enable VFPV3 instruction set.  Use -DENABLE_VFPV3=ON instead." )
set(ENABLE_VFPV3 TRUE)
endif()

set(CMAKE_FIND_ROOT_PATH ${CMAKE_FIND_ROOT_PATH} ${ARM_LINUX_SYSROOT})

if(EXISTS ${CUDA_TOOLKIT_ROOT_DIR})
set(CMAKE_FIND_ROOT_PATH ${CMAKE_FIND_ROOT_PATH} ${CUDA_TOOLKIT_ROOT_DIR})
endif()

set(TOOLCHAIN_CONFIG_VARS ${TOOLCHAIN_CONFIG_VARS}
ARM_LINUX_SYSROOT
ENABLE_NEON
ENABLE_VFPV3
CUDA_TOOLKIT_ROOT_DIR
)
toolchain_save_config()

но по-прежнему имеет следующий вывод после запуска команды cmake:

Команда:

Код: Выделить всё

khadas@Khadas:~/Downloads/opencv/platforms/linux/build_hardfp$ cmake -DBUILD_SHARED_LIBRARY=OFF -DLAPACK_LIBRARIES=/usr/lib/liblapack.a -DOPENCV_EXTRA_MODULES_PATH=/home/khadas/Downloads/opencv_contrib/modules -DCMAKE_TOOLCHAIN_FILE=../arm-gnueabi.toolchain.cmake ../../..

Вывод:

Код: Выделить всё

-- General configuration for OpenCV 4.0.0-pre =====================================
--   Version control:               3.4.3-374-g475c775-dirty
--
--   Extra modules:
--     Location (extra):            /home/khadas/Downloads/opencv_contrib/modules
--     Version control (extra):     3.4.3-93-g3054618
--
--   Platform:
--     Timestamp:                   2018-09-24T09:23:39Z
--     Host:                        Linux 4.9.40 aarch64
--     Target:                      Linux 1 arm
--     CMake:                       3.5.1
--     CMake generator:             Unix Makefiles
--     CMake build tool:            /usr/bin/make
--     Configuration:               Release
--
--   CPU/HW features:
--     Baseline:
--       requested:                 DETECT
--       disabled:                  VFPV3 NEON
--
--   C/C++:
--     Built as dynamic libs?:      YES
--     C++ Compiler:                /usr/bin/arm-linux-gnueabi-g++  (ver 5.4.0)
--     C++ flags (Release):         -mthumb  -fdata-sections -Wa,--noexecstack -fsigned-char -Wno-psabi   -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 -Wshadow -Wsign-promo -Wuninitialized -Winit-self -Wsuggest-override -Wno-narrowing -Wno-delete-non-virtual-dtor -Wno-comment -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections  -mfp16-format=ieee -fvisibility=hidden -fvisibility-inlines-hidden -O3 -DNDEBUG  -DNDEBUG
--     C++ flags (Debug):           -mthumb  -fdata-sections -Wa,--noexecstack -fsigned-char -Wno-psabi   -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 -Wshadow -Wsign-promo -Wuninitialized -Winit-self -Wsuggest-override -Wno-narrowing -Wno-delete-non-virtual-dtor -Wno-comment -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections  -mfp16-format=ieee -fvisibility=hidden -fvisibility-inlines-hidden -g  -O0 -DDEBUG -D_DEBUG
--     C Compiler:                  /usr/bin/arm-linux-gnueabi-gcc
--     C flags (Release):           -mthumb  -fdata-sections -Wa,--noexecstack -fsigned-char -Wno-psabi   -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Winit-self -Wno-narrowing -Wno-comment -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections  -mfp16-format=ieee -fvisibility=hidden -O3 -DNDEBUG  -DNDEBUG
--     C flags (Debug):             -mthumb  -fdata-sections -Wa,--noexecstack -fsigned-char -Wno-psabi   -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Winit-self -Wno-narrowing -Wno-comment -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections  -mfp16-format=ieee -fvisibility=hidden -g  -O0 -DDEBUG -D_DEBUG
--     Linker flags (Release):      -Wl,--fix-cortex-a8 -Wl,--no-undefined -Wl,--gc-sections -Wl,-z,noexecstack -Wl,-z,relro -Wl,-z,now
--     Linker flags (Debug):        -Wl,--fix-cortex-a8 -Wl,--no-undefined -Wl,--gc-sections -Wl,-z,noexecstack -Wl,-z,relro -Wl,-z,now
--     ccache:                      NO
--     Precompiled headers:         NO
--     Extra dependencies:           dl m pthread rt
--     3rdparty dependencies:
--
--   OpenCV modules:
--     To be built:                 aruco bgsegm bioinspired calib3d ccalib core datasets dnn dnn_objdetect dpm face features2d flann fuzzy hfs highgui img_hash imgcodecs imgproc java_bindings_generator line_descriptor ml objdetect optflow phase_unwrapping photo plot python_bindings_generator reg rgbd saliency shape stereo stitching structured_light superres surface_matching text tracking ts video videoio videostab xfeatures2d ximgproc xobjdetect xphoto
--     Disabled:                    js world
--     Disabled by dependency:      -
--     Unavailable:                 cnn_3dobj cudaarithm cudabgsegm cudacodec cudafeatures2d cudafilters cudaimgproc cudalegacy cudaobjdetect cudaoptflow cudastereo cudawarping cudev cvv freetype hdf java matlab ovis python2 python3 sfm viz
--     Applications:                tests perf_tests apps
--     Documentation:               NO
--     Non-free algorithms:         NO
--
--   GUI:
--     GTK+:                        NO
--
--   Media I/O:
--     ZLib:                        build (ver 1.2.11)
--     JPEG:                        libjpeg-turbo (ver 1.5.3-62)
--     WEBP:                        build (ver encoder: 0x020e)
--     PNG:                         build (ver 1.6.34)
--     TIFF:                        build (ver 42 - 4.0.9)
--     JPEG 2000:                   build (ver 1.900.1)
--     OpenEXR:                     build (ver 1.7.1)
--     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
--     libv4l/libv4l2:              NO
--     v4l/v4l2:                    linux/videodev2.h
--
--   Parallel framework:            pthreads
--
--   Trace:                         YES (built-in)
--
--   Other third-party libraries:
--     Lapack:                      NO
--     Custom HAL:                  YES (carotene (ver 0.0.1))
--     Protobuf:                    build (3.5.1)
--
--   OpenCL:                        YES (no extra features)
--     Include path:                /home/khadas/Downloads/opencv/3rdparty/include/opencl/1.2
--     Link libraries:              Dynamic load
--
--   Python (for build):            /usr/bin/python2.7
--
--   Install to:                    /home/khadas/Downloads/opencv/platforms/linux/build_hardfp/install
-- -----------------------------------------------------------------
--
-- Configuring done
-- Generating done

Обратите внимание на следующую строку в выводе раздела Модели Opencv:

Код: Выделить всё

--     Unavailable:                 cnn_3dobj cudaarithm cudabgsegm cudacodec cudafeatures2d cudafilters cudaimgproc cudalegacy cudaobjdetect cudaoptflow cudastereo cudawarping cudev cvv freetype hdf java matlab ovis python2 python3 sfm viz

Заранее спасибо!!

Подробнее здесь: https://stackoverflow.com/questions/524 ... ing-opencv

1761140414

Anonymous

Я пытаюсь собрать [b]OpenCv[/b] на Khadas Vim2 с предустановленной Ubuntu Mate с архитектурой процессора на базе [b]arm 64-бит[/b], используя CMake. Однако CMake не распознает Java ([code]where i already have both oracle-jdk-1.8 and openjdk-1.8). Я попытался переустановить Apache Ant, экспортировав JAVA_HOME[/code] и ANT_HOME в PATH через:

[code]export JAVA_HOME=/usr/lib/jvm/java-8-openjdk-arm64
export PATH=$JAVA_HOME/bin:$PATH
export ANT_HOME=/usr/local/ant
export PATH=$ANT_HOME/bin:$PATH
[/code]

Я также пытался установить компиляторы GCC и G++ в файле цепочки инструментов следующим образом:

[code]set( CMAKE_SYSTEM_PROCESSOR arm )
set( CMAKE_C_COMPILER arm-linux-gnueabi-gcc )
set( CMAKE_CXX_COMPILER arm-linux-gnueabi-g++ )

if(COMMAND toolchain_save_config)
return() # prevent recursive call
endif()

set(CMAKE_SYSTEM_NAME Linux)
set(CMAKE_SYSTEM_VERSION 1)
if(NOT DEFINED CMAKE_SYSTEM_PROCESSOR)
set(CMAKE_SYSTEM_PROCESSOR arm)
else()
#message("CMAKE_SYSTEM_PROCESSOR=${CMAKE_SYSTEM_PROCESSOR}")
endif()

include("${CMAKE_CURRENT_LIST_DIR}/gnu.toolchain.cmake")

if(CMAKE_SYSTEM_PROCESSOR STREQUAL arm AND NOT ARM_IGNORE_FP)
set(FLOAT_ABI_SUFFIX "")
if(NOT SOFTFP)
set(FLOAT_ABI_SUFFIX "hf")
endif()
endif()

if(NOT "x${GCC_COMPILER_VERSION}" STREQUAL "x")
set(__GCC_VER_SUFFIX "-${GCC_COMPILER_VERSION}")
endif()

if(NOT DEFINED CMAKE_C_COMPILER)
find_program(CMAKE_C_COMPILER NAMES ${GNU_MACHINE}${FLOAT_ABI_SUFFIX}-gcc${__GCC_VER_SUFFIX})
else()
#message(WARNING "CMAKE_C_COMPILER=${CMAKE_C_COMPILER} is defined")
endif()
if(NOT DEFINED CMAKE_CXX_COMPILER)
find_program(CMAKE_CXX_COMPILER NAMES ${GNU_MACHINE}${FLOAT_ABI_SUFFIX}-g++${__GCC_VER_SUFFIX})
else()
#message(WARNING "CMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER} is defined")
endif()
if(NOT DEFINED CMAKE_LINKER)
find_program(CMAKE_LINKER NAMES ${GNU_MACHINE}${FLOAT_ABI_SUFFIX}-ld${__GCC_VER_SUFFIX} ${GNU_MACHINE}${FLOAT_ABI_SUFFIX}-ld)
else()
#message(WARNING "CMAKE_LINKER=${CMAKE_LINKER} is defined")
endif()
if(NOT DEFINED CMAKE_AR)
find_program(CMAKE_AR NAMES ${GNU_MACHINE}${FLOAT_ABI_SUFFIX}-ar${__GCC_VER_SUFFIX} ${GNU_MACHINE}${FLOAT_ABI_SUFFIX}-ar)
else()
#message(WARNING "CMAKE_AR=${CMAKE_AR} is defined")
endif()

if(NOT DEFINED ARM_LINUX_SYSROOT AND DEFINED GNU_MACHINE)
set(ARM_LINUX_SYSROOT /usr/${GNU_MACHINE}${FLOAT_ABI_SUFFIX})
endif()

if(NOT DEFINED CMAKE_CXX_FLAGS)
set(CMAKE_CXX_FLAGS           "" CACHE INTERNAL "")
set(CMAKE_C_FLAGS             "" CACHE INTERNAL "")
set(CMAKE_SHARED_LINKER_FLAGS "" CACHE INTERNAL "")
set(CMAKE_MODULE_LINKER_FLAGS "" CACHE INTERNAL "")
set(CMAKE_EXE_LINKER_FLAGS    "" CACHE INTERNAL "")

set(CMAKE_CXX_FLAGS           "${CMAKE_CXX_FLAGS} -fdata-sections -Wa,--noexecstack -fsigned-char -Wno-psabi")
set(CMAKE_C_FLAGS             "${CMAKE_C_FLAGS} -fdata-sections -Wa,--noexecstack -fsigned-char -Wno-psabi")
if(CMAKE_SYSTEM_PROCESSOR STREQUAL arm)
set(CMAKE_CXX_FLAGS           "-mthumb ${CMAKE_CXX_FLAGS}")
set(CMAKE_C_FLAGS             "-mthumb ${CMAKE_C_FLAGS}")
set(CMAKE_EXE_LINKER_FLAGS    "${CMAKE_EXE_LINKER_FLAGS} -Wl,-z,nocopyreloc")
endif()
if(CMAKE_SYSTEM_PROCESSOR STREQUAL arm)
set(ARM_LINKER_FLAGS "-Wl,--fix-cortex-a8 -Wl,--no-undefined -Wl,--gc-sections -Wl,-z,noexecstack -Wl,-z,relro -Wl,-z,now")
elseif(CMAKE_SYSTEM_PROCESSOR STREQUAL aarch64)
set(ARM_LINKER_FLAGS "-Wl,--no-undefined -Wl,--gc-sections -Wl,-z,noexecstack -Wl,-z,relro -Wl,-z,now")
endif()
set(CMAKE_SHARED_LINKER_FLAGS "${ARM_LINKER_FLAGS} ${CMAKE_SHARED_LINKER_FLAGS}")
set(CMAKE_MODULE_LINKER_FLAGS "${ARM_LINKER_FLAGS} ${CMAKE_MODULE_LINKER_FLAGS}")
set(CMAKE_EXE_LINKER_FLAGS    "${ARM_LINKER_FLAGS} ${CMAKE_EXE_LINKER_FLAGS}")
else()
#message(WARNING "CMAKE_CXX_FLAGS='${CMAKE_CXX_FLAGS}' is defined")
endif()

if(USE_NEON)
message(WARNING "You use obsolete variable USE_NEON to enable NEON instruction set. Use -DENABLE_NEON=ON instead." )
set(ENABLE_NEON TRUE)
elseif(USE_VFPV3)
message(WARNING "You use obsolete variable USE_VFPV3 to enable VFPV3 instruction set.  Use -DENABLE_VFPV3=ON instead." )
set(ENABLE_VFPV3 TRUE)
endif()

set(CMAKE_FIND_ROOT_PATH ${CMAKE_FIND_ROOT_PATH} ${ARM_LINUX_SYSROOT})

if(EXISTS ${CUDA_TOOLKIT_ROOT_DIR})
set(CMAKE_FIND_ROOT_PATH ${CMAKE_FIND_ROOT_PATH} ${CUDA_TOOLKIT_ROOT_DIR})
endif()

set(TOOLCHAIN_CONFIG_VARS ${TOOLCHAIN_CONFIG_VARS}
ARM_LINUX_SYSROOT
ENABLE_NEON
ENABLE_VFPV3
CUDA_TOOLKIT_ROOT_DIR
)
toolchain_save_config()
[/code]

но по-прежнему имеет следующий вывод после запуска команды cmake:

[b]Команда:[/b]

[code]khadas@Khadas:~/Downloads/opencv/platforms/linux/build_hardfp$ cmake -DBUILD_SHARED_LIBRARY=OFF -DLAPACK_LIBRARIES=/usr/lib/liblapack.a -DOPENCV_EXTRA_MODULES_PATH=/home/khadas/Downloads/opencv_contrib/modules -DCMAKE_TOOLCHAIN_FILE=../arm-gnueabi.toolchain.cmake ../../..
[/code]

[b]Вывод:[/b]

[code]-- General configuration for OpenCV 4.0.0-pre =====================================
--   Version control:               3.4.3-374-g475c775-dirty
--
--   Extra modules:
--     Location (extra):            /home/khadas/Downloads/opencv_contrib/modules
--     Version control (extra):     3.4.3-93-g3054618
--
--   Platform:
--     Timestamp:                   2018-09-24T09:23:39Z
--     Host:                        Linux 4.9.40 aarch64
--     Target:                      Linux 1 arm
--     CMake:                       3.5.1
--     CMake generator:             Unix Makefiles
--     CMake build tool:            /usr/bin/make
--     Configuration:               Release
--
--   CPU/HW features:
--     Baseline:
--       requested:                 DETECT
--       disabled:                  VFPV3 NEON
--
--   C/C++:
--     Built as dynamic libs?:      YES
--     C++ Compiler:                /usr/bin/arm-linux-gnueabi-g++  (ver 5.4.0)
--     C++ flags (Release):         -mthumb  -fdata-sections -Wa,--noexecstack -fsigned-char -Wno-psabi   -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 -Wshadow -Wsign-promo -Wuninitialized -Winit-self -Wsuggest-override -Wno-narrowing -Wno-delete-non-virtual-dtor -Wno-comment -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections  -mfp16-format=ieee -fvisibility=hidden -fvisibility-inlines-hidden -O3 -DNDEBUG  -DNDEBUG
--     C++ flags (Debug):           -mthumb  -fdata-sections -Wa,--noexecstack -fsigned-char -Wno-psabi   -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 -Wshadow -Wsign-promo -Wuninitialized -Winit-self -Wsuggest-override -Wno-narrowing -Wno-delete-non-virtual-dtor -Wno-comment -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections  -mfp16-format=ieee -fvisibility=hidden -fvisibility-inlines-hidden -g  -O0 -DDEBUG -D_DEBUG
--     C Compiler:                  /usr/bin/arm-linux-gnueabi-gcc
--     C flags (Release):           -mthumb  -fdata-sections -Wa,--noexecstack -fsigned-char -Wno-psabi   -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Winit-self -Wno-narrowing -Wno-comment -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections  -mfp16-format=ieee -fvisibility=hidden -O3 -DNDEBUG  -DNDEBUG
--     C flags (Debug):             -mthumb  -fdata-sections -Wa,--noexecstack -fsigned-char -Wno-psabi   -fsigned-char -W -Wall -Werror=return-type -Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -Wformat -Werror=format-security -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wundef -Winit-self -Wpointer-arith -Wshadow -Wuninitialized -Winit-self -Wno-narrowing -Wno-comment -fdiagnostics-show-option -pthread -fomit-frame-pointer -ffunction-sections -fdata-sections  -mfp16-format=ieee -fvisibility=hidden -g  -O0 -DDEBUG -D_DEBUG
--     Linker flags (Release):      -Wl,--fix-cortex-a8 -Wl,--no-undefined -Wl,--gc-sections -Wl,-z,noexecstack -Wl,-z,relro -Wl,-z,now
--     Linker flags (Debug):        -Wl,--fix-cortex-a8 -Wl,--no-undefined -Wl,--gc-sections -Wl,-z,noexecstack -Wl,-z,relro -Wl,-z,now
--     ccache:                      NO
--     Precompiled headers:         NO
--     Extra dependencies:           dl m pthread rt
--     3rdparty dependencies:
--
--   OpenCV modules:
--     To be built:                 aruco bgsegm bioinspired calib3d ccalib core datasets dnn dnn_objdetect dpm face features2d flann fuzzy hfs highgui img_hash imgcodecs imgproc java_bindings_generator line_descriptor ml objdetect optflow phase_unwrapping photo plot python_bindings_generator reg rgbd saliency shape stereo stitching structured_light superres surface_matching text tracking ts video videoio videostab xfeatures2d ximgproc xobjdetect xphoto
--     Disabled:                    js world
--     Disabled by dependency:      -
--     Unavailable:                 cnn_3dobj cudaarithm cudabgsegm cudacodec cudafeatures2d cudafilters cudaimgproc cudalegacy cudaobjdetect cudaoptflow cudastereo cudawarping cudev cvv freetype hdf java matlab ovis python2 python3 sfm viz
--     Applications:                tests perf_tests apps
--     Documentation:               NO
--     Non-free algorithms:         NO
--
--   GUI:
--     GTK+:                        NO
--
--   Media I/O:
--     ZLib:                        build (ver 1.2.11)
--     JPEG:                        libjpeg-turbo (ver 1.5.3-62)
--     WEBP:                        build (ver encoder: 0x020e)
--     PNG:                         build (ver 1.6.34)
--     TIFF:                        build (ver 42 - 4.0.9)
--     JPEG 2000:                   build (ver 1.900.1)
--     OpenEXR:                     build (ver 1.7.1)
--     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
--     libv4l/libv4l2:              NO
--     v4l/v4l2:                    linux/videodev2.h
--
--   Parallel framework:            pthreads
--
--   Trace:                         YES (built-in)
--
--   Other third-party libraries:
--     Lapack:                      NO
--     Custom HAL:                  YES (carotene (ver 0.0.1))
--     Protobuf:                    build (3.5.1)
--
--   OpenCL:                        YES (no extra features)
--     Include path:                /home/khadas/Downloads/opencv/3rdparty/include/opencl/1.2
--     Link libraries:              Dynamic load
--
--   Python (for build):            /usr/bin/python2.7
--
--   Install to:                    /home/khadas/Downloads/opencv/platforms/linux/build_hardfp/install
-- -----------------------------------------------------------------
--
-- Configuring done
-- Generating done
[/code]

Обратите внимание на следующую строку в выводе раздела [b]Модели Opencv[/b]:

[code]--     Unavailable:                 cnn_3dobj cudaarithm cudabgsegm cudacodec cudafeatures2d cudafilters cudaimgproc cudalegacy cudaobjdetect cudaoptflow cudastereo cudawarping cudev cvv freetype hdf java matlab ovis python2 python3 sfm viz
[/code]

[b]Заранее спасибо!![/b] 

Подробнее здесь: [url]https://stackoverflow.com/questions/52477159/cmake-cannot-recognize-java-while-building-opencv[/url]