1

我无法使用 cmake 为 opencv 编译 sfm 模块。

以下日志显示cmake同时找到glog和gflags,但编译失败。

Glog:   YES
freetype2:   NO
harfbuzz:    NO
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.
Found installed version of gflags: D:/ceres/gflags/out/build/x64-Debug
Detected gflags version: 2.2.2
WARNING: Target "cmTC_9b54b" requests linking to directory "D:/ceres/glog/out/build/x64-Debug".  Targets may link only to libraries.  CMake is dropping the item.
WARNING: Target "cmTC_9b54b" requests linking to directory "D:/ceres/glog/out/build/x64-Debug".  Targets may link only to libraries.  CMake is dropping the item.
WARNING: Target "cmTC_9b54b" requests linking to directory "D:/ceres/glog/out/build/x64-Debug".  Targets may link only to libraries.  CMake is dropping the item.
WARNING: Target "cmTC_9b54b" requests linking to directory "D:/ceres/glog/out/build/x64-Debug".  Targets may link only to libraries.  CMake is dropping the item.
Checking SFM deps... FALSE
Module opencv_sfm disabled because the following dependencies are not found: Glog/Gflags

Tesseract:   NO
Allocator metrics storage type: 'long long'
Registering hook 'INIT_MODULE_SOURCES_opencv_dnn': D:/opencv-4.5.0/modules/dnn/cmake/hooks/INIT_MODULE_SOURCES_opencv_dnn.cmake
opencv_dnn: filter out cuda4dnn source code
CMake Warning at D:/opencv-4.5.0/cmake/OpenCVModule.cmake:679 (message):
  Unexpected include: D:/opencv-4.5.0/build/downloads/xfeatures2d
  (module=opencv_xfeatures2d)
Call Stack (most recent call first):
  D:/opencv-4.5.0/cmake/OpenCVModule.cmake:710 (ocv_target_include_modules)
  D:/opencv_contrib/modules/xfeatures2d/CMakeLists.txt:17 (ocv_module_include_directories)

这是来自“opencv_contrib\modules\sfm\CmakeLists.txt”的代码片段,它导致了之前的输出:

if((gflags_FOUND OR GFLAGS_FOUND OR GFLAGS_INCLUDE_DIRS) AND (glog_FOUND OR GLOG_FOUND OR GLOG_INCLUDE_DIRS))
  set(_fname "${CMAKE_CURRENT_BINARY_DIR}/test_sfm_deps.cpp")
  file(WRITE "${_fname}" "#include <glog/logging.h>\n#include <gflags/gflags.h>\n int main() { (void)(0); return 0; }\n")

  // This is reason of the fail
  try_compile(SFM_DEPS_OK "${CMAKE_BINARY_DIR}" "${_fname}"
      CMAKE_FLAGS "-DINCLUDE_DIRECTORIES:STRING=${GLOG_INCLUDE_DIRS};${GFLAGS_INCLUDE_DIRS}"
      LINK_LIBRARIES ${GLOG_LIBRARIES} ${GFLAGS_LIBRARIES}
      OUTPUT_VARIABLE OUTPUT
  )
  file(REMOVE "${_fname}")
  message(STATUS "Checking SFM deps... ${SFM_DEPS_OK}")
else()
  set(SFM_DEPS_OK FALSE)
endif()

if(NOT HAVE_EIGEN OR NOT SFM_DEPS_OK)
  set(DISABLE_MSG "Module opencv_sfm disabled because the following dependencies are not found:")
  if(NOT HAVE_EIGEN)
    set(DISABLE_MSG "${DISABLE_MSG} Eigen")
  endif()
  if(NOT SFM_DEPS_OK)
    set(DISABLE_MSG "${DISABLE_MSG} Glog/Gflags")
  endif()
  message(STATUS ${DISABLE_MSG})
  ocv_module_disable(sfm)
endif()

我认为 cmake 中的 gflags 和 glog 路径存在问题。我尝试了更多变体。这是当前设置其中大部分是根据Ceres Solver 文档设置的。

配置:

  • OpenCV 4.5.0
  • OpenCV-contrib 4.5.0
  • glog 0.4.0
  • gflags 2.2.2
  • 谷神星解算器 2.0.0
  • 特征 3.3.9
  • CMake 3.9.12
  • 视窗 10

类似的问题:

4

1 回答 1

1

我在 cmake 中的 glog 参数设置不正确。

这是正确的设置:

  • glog_DIR:构建在哪里。应该有glog-config.cmake。路径:glog/out/build/x64-Debug
  • GLOG_LIBRARIES:安装位置。glogd.lib的路径。路径:glog/out/install/x64-Debug/lib/glogd.lib
  • GLOG_INCLUDE_DIR:安装位置。应该有一个名为glog的文件夹。路径:glog/out/install/x64-Debug/include
于 2020-12-21T12:47:30.323 回答