"OPENCV_TEST_DATA_PATH zmienna środowiskowa nie została określona" podczas instalowania OpenCV 3.2 z opencv_contib

Question

Próbuję zainstalować OpenCV 3.2 wraz z modułami z opencv_contrib na Ubuntu 16.04.

Jednak, kiedy uruchomić polecenie z sudo make install, pojawia się następujący komunikat:

➜ build git:(master) sudo make install 
-- Detected version of GNU GCC: 54 (504) 
-- FP16: Feature disabled 
-- Found ZLIB: /usr/lib64/libz.so (found suitable version "1.2.8", minimum required is "1.2.3") 
-- Found ZLIB: /usr/lib64/libz.so (found version "1.2.8") 
-- Looking for linux/videodev.h 
-- Looking for linux/videodev.h - not found 
-- Looking for linux/videodev2.h 
-- Looking for linux/videodev2.h - found 
-- Looking for sys/videoio.h 
-- Looking for sys/videoio.h - not found 
-- Checking for module 'libavresample' 
-- No package 'libavresample' found 
-- Checking for module 'libgphoto2' 
-- No package 'libgphoto2' found 
-- Found TBB: /usr/lib64/libtbb.so 
-- found IPP (ICV version): 9.0.1 [9.0.1] 
-- at: /home/denis/code/opencv/build/3rdparty/ippicv/ippicv_lnx 
-- CUDA detected: 8.0 
-- CUDA NVCC target flags: -gencode;arch=compute_20,code=sm_20;-gencode;arch=compute_30,code=sm_30;-gencode;arch=compute_35,code=sm_35;-gencode;arch=compute_37,code=sm_37;-gencode;arch=compute_50,code=sm_50;-gencode;arch=compute_52,code=sm_52;-gencode;arch=compute_60,code=sm_60;-gencode;arch=compute_61,code=sm_61;-D_FORCE_INLINES 
-- LAPACK_IMPL: OpenBLAS, LAPACK_LIBRARIES: /opt/OpenBLAS/lib/libopenblas.so 
-- Could NOT find Doxygen (missing: DOXYGEN_EXECUTABLE) 
-- Could NOT find Matlab (missing: MATLAB_MEX_SCRIPT MATLAB_INCLUDE_DIRS MATLAB_ROOT_DIR MATLAB_LIBRARIES MATLAB_LIBRARY_DIRS MATLAB_MEXEXT MATLAB_ARCH MATLAB_BIN) 
-- VTK is not found. Please set -DVTK_DIR in CMake to VTK build directory, or to VTK install subdirectory with VTKConfig.cmake file 
-- Caffe: NO 
-- Protobuf: YES 
-- Glog: YES 
-- freetype2: YES 
-- harfbuzz: YES 
-- Module opencv_sfm disabled because the following dependencies are not found: Eigen Glog/Gflags 
-- Assume that non-module dependency is available: freetype (for module opencv_freetype) 
-- Assume that non-module dependency is available: harfbuzz (for module opencv_freetype) 
CMake Error at /home/denis/code/opencv_contrib/modules/dnn/CMakeLists.txt:84 (message): 
    OPENCV_TEST_DATA_PATH environment variable was not specified 


-- Configuring incomplete, errors occurred! 
See also "/home/denis/code/opencv/build/CMakeFiles/CMakeOutput.log". 
See also "/home/denis/code/opencv/build/CMakeFiles/CMakeError.log". 
Makefile:10450: recipe for target 'cmake_check_build_system' failed 
make: *** [cmake_check_build_system] Error 1 

Chodzi o to, że był już prawie ten sam błąd, gdy próbuje uruchomić komendę make -j8 a potem już dodano zmienną środowiskową OPENCV_TEST_DATA_PATH do moich ~/.bashrc i ~/.zshrc plików takiego:

export OPENCV_TEST_DATA_PATH=/home/denis/code/opencv_extra/testdata 

Pobrałem opencv_extra repo wcześniej. A błąd zniknął! Mogłem pomyślnie uruchomić polecenie make -j8.

Po uruchomieniu polecenia make -j8, następnie spróbowałem uruchomić polecenie sudo make install i otrzymałem wynik, który widzisz powyżej.

Ta zmienna jest określona:

➜ build echo $OPENCV_TEST_DATA_PATH 
/home/denis/code/opencv_extra/testdata 

Tak, nie jestem pewien, co należy zrobić, aby prawidłowo zainstalować OpenCV.

PS: oto polecenie cmake użyłem:

cmake -D CMAKE_BUILD_TYPE=RELEASE -D CMAKE_INSTALL_PREFIX=/usr/local -D WITH_TBB=ON -D BUILD_NEW_PYTHON_SUPPORT=ON -D WITH_V4L=ON -D INSTALL_C_EXAMPLES=ON -D INSTALL_PYTHON_EXAMPLES=ON -D BUILD_EXAMPLES=ON -D WITH_QT=ON -D WITH_OPENGL=ON -D WITH_CUBLAS=ON -D OPENCV_EXTRA_MODULES_PATH=../../opencv_contrib/modules .. 

---

mógłbyś mi pomóc rozwiązać ten problem?

Answer 1

OK, więc błąd wskazywał na linię 84 pliku opencv_contrib/modules/dnn/CMakeLists.txt. Sprawdziłem to i próbowałem skomentować całą sprawę Generating test data for Torch importer (spójrz na koniec pliku podanego poniżej).

Potem próbowałem ponownie uruchomić sudo make install i wszystko działało jak czar.

Nie jestem pewien, co się dzieje i co Torch ma wspólnego z OpenCV, jednak mam zainstalowany Torch7 na moim komputerze z Ubuntu 16.04. Nie jestem pewien, czy jest w jakiś sposób połączony, czy nie, ale pomógł mi komentarz.

Ważne jest, aby pamiętać, że wykonując te same czynności na komputerze Ubuntu 14.04 (bez zainstalowanego Torch7), błąd nie pojawił się wcale.

---

Poniżej znajduje się treść opencv_contrib/modules/dnn/CMakeLists.txt że pracował dla mnie:

cmake_minimum_required(VERSION 2.8) 

if(APPLE_FRAMEWORK OR WINRT 
    OR AARCH64 # protobuf doesn't know this platform 
) 
    ocv_module_disable(dnn) 
endif() 

set(the_description "Deep neural network module. It allows to load models from different frameworks and to make forward pass") 
set(OPENCV_MODULE_IS_PART_OF_WORLD OFF) 

ocv_add_module(dnn opencv_core opencv_imgproc WRAP python matlab) 
ocv_warnings_disable(CMAKE_CXX_FLAGS -Wno-shadow -Wno-parentheses -Wmaybe-uninitialized -Wsign-promo 
            -Wmissing-declarations -Wmissing-prototypes 
) 
ocv_warnings_disable(CMAKE_CXX_FLAGS /wd4701 /wd4100) 

if(MSVC) 
    add_definitions(-D_CRT_SECURE_NO_WARNINGS=1) 
    ocv_warnings_disable(CMAKE_CXX_FLAGS /wd4244 /wd4267 /wd4018 /wd4355 /wd4800 /wd4251 /wd4996 /wd4146 
             /wd4305 /wd4127 /wd4100 /wd4512 /wd4125 /wd4389 /wd4510 /wd4610 
             /wd4702 /wd4456 /wd4457 /wd4065 /wd4310 /wd4661 /wd4506 
) 
else() 
    ocv_warnings_disable(CMAKE_CXX_FLAGS -Wno-deprecated -Wmissing-prototypes -Wmissing-declarations -Wshadow 
             -Wunused-parameter -Wunused-local-typedefs -Wsign-compare -Wsign-promo 
             -Wundef -Wtautological-undefined-compare -Wignored-qualifiers -Wextra 
             -Wunused-function -Wunused-const-variable -Wdeprecated-declarations 
) 
endif() 

if(ANDROID) 
    add_definitions(-DDISABLE_POSIX_MEMALIGN -DTH_DISABLE_HEAP_TRACKING) 
endif() 

# ---------------------------------------------------------------------------- 
# Resolve libprotobuf dependency 
# ---------------------------------------------------------------------------- 
include(cmake/OpenCVFindLibProtobuf.cmake) 
ocv_source_group("Src\\protobuf" FILES ${PROTOBUF_SRCS} ${PROTOBUF_HDRS}) 
ocv_module_include_directories(include ${PROTOBUF_INCLUDE_DIR}) 

ocv_glob_module_sources(${PROTOBUF_SRCS} ${PROTOBUF_HDRS} ${CBLAS_H_PROXY_PATH}) 
ocv_create_module(${PROTOBUF_LIBRARIES}) 
ocv_add_samples() 
ocv_add_accuracy_tests() 
ocv_add_perf_tests() 

# ---------------------------------------------------------------------------- 
# Download pre-trained models for complex testing on GoogLeNet and AlexNet 
# ---------------------------------------------------------------------------- 
OCV_OPTION(${the_module}_DOWNLOAD_CAFFE_MODELS "Use GoogLeNet Caffe model for testing" OFF IF BUILD_TESTS AND DEFINED ENV{OPENCV_TEST_DATA_PATH}) 
if(BUILD_TESTS AND DEFINED ENV{OPENCV_TEST_DATA_PATH} AND (DOWNLOAD_EXTERNAL_TEST_DATA OR ${the_module}_DOWNLOAD_CAFFE_MODELS)) 
    add_custom_command(TARGET opencv_test_${name} POST_BUILD 
         COMMAND ${CMAKE_COMMAND} -Dmodel=GoogleNet -P ${CMAKE_CURRENT_SOURCE_DIR}/cmake/download_model.cmake) 
    add_definitions(-DENABLE_CAFFE_MODEL_TESTS=1) 
endif() 

# ---------------------------------------------------------------------------- 
# Torch7 importer of blobs and models, produced by Torch.nn module 
# ---------------------------------------------------------------------------- 
OCV_OPTION(${the_module}_BUILD_TORCH_IMPORTER "Build Torch model importer" ON) 
if(${the_module}_BUILD_TORCH_IMPORTER) 
    add_definitions(-DENABLE_TORCH_IMPORTER=1) 
    ocv_warnings_disable(CMAKE_CXX_FLAGS /wd4702 /wd4127 /wd4267) #supress warnings in original torch files 

    if(NOT DEFINED HAVE_TORCH_EXE) 
     execute_process(COMMAND th ${CMAKE_CURRENT_SOURCE_DIR}/testdata/dnn/torch/torch_nn_echo.lua RESULT_VARIABLE TORCH_EXE_STATUS) 
     set(HAVE_TORCH_EXE OFF) 
     if(${TORCH_EXE_STATUS} EQUAL 0) 
      set(HAVE_TORCH_EXE ON) 
     endif() 
     set(HAVE_TORCH_EXE ${HAVE_TORCH_EXE} CACHE INTERNAL "Have torch binary") 
    endif() 
endif() 

# ---------------------------------------------------------------------------- 
# Generating test data for Torch importer 
# ---------------------------------------------------------------------------- 
# OCV_OPTION(${the_module}_BUILD_TORCH_TESTS "Build Torch tests (installed torch7 with nn module is required)" ON IF BUILD_TESTS AND ${the_module}_BUILD_TORCH_IMPORTER AND HAVE_TORCH_EXE) 
# if(${the_module}_BUILD_TORCH_TESTS) 
# 
#  if(NOT DEFINED ENV{OPENCV_TEST_DATA_PATH}) 
#   message(FATAL_ERROR "OPENCV_TEST_DATA_PATH environment variable was not specified") 
#  endif() 
# 
#  if(NOT HAVE_TORCH_EXE) 
#   message(FATAL_ERROR "Torch executable \"th\" not found or nn module not found") 
#  endif() 
# 
#  add_custom_command(TARGET opencv_test_${name} POST_BUILD 
#       COMMAND th ${CMAKE_CURRENT_SOURCE_DIR}/testdata/dnn/torch/torch_gen_test_data.lua 
#       WORKING_DIRECTORY $ENV{OPENCV_TEST_DATA_PATH}/dnn/torch) 
#  add_definitions(-DENABLE_TORCH_TESTS=1) 
# endif()