在我的CMake脚本中,我将包含<PackageName>Config.cmake
的文件夹的路径附加到<PackageName>_ROOT
,然后调用find_package(<PackageName> REQUIRED)
,但它找不到我的包。
当我使用CMAKE_FIND_DEBUG_MODE
时,我看到我的文件夹列在<PackageName>_ROOT CMake variable [CMAKE_FIND_USE_PACKAGE_ROOT_PATH]
中(它实际上是那里唯一的文件夹),但它没有列在find_package considered the following locations for the Config module:
之后。
为什么我会有这样的行为?我使用的是Android Studio的CMake 3.18.1。我试图找到的软件包是OpenCV。
相对于我的CMakeLists.txt
文件,OpenCV安装在../../build/opencv-build<custom suffix>
中,所以我查找它的代码是:
get_filename_component(OPENCV_BUILD_DIRS_ROOT ../../build REALPATH)
file(GLOB OPENCV_BUILD_DIRS ${OPENCV_BUILD_DIRS_ROOT}/opencv-build*)
list(APPEND OpenCV_ROOT ${OPENCV_BUILD_DIRS})
find_package(OpenCV ${OPENCV_VERSION} REQUIRED ${OPENCV_PUBLIC_LIBRARIES} ${OPENCV_PRIVATE_LIBRARIES})
当我在Linux(实际上是WSL)上运行它时,一切都很好,CMake在../../build/opencv-build
(或绝对路径形式的<project path>/build/opencv-build
)中成功地找到了OpenCV。
但当我尝试从Android Studio构建项目时,它却没有,我从CMAKE_FIND_DEBUG_MODE
得到了以下输出:
CMake Debug Log at external/opencv/CMakeLists.txt:12 (find_package):
find_package considered the following paths for OpenCV.cmake
C:/Users/<username>/AppData/Local/Android/Sdk/cmake/3.18.1/share/cmake-3.18/Modules/FindOpenCV.cmake
The file was not found.
<PackageName>_ROOT CMake variable [CMAKE_FIND_USE_PACKAGE_ROOT_PATH].
<project path>/build/opencv-build
CMAKE_PREFIX_PATH variable [CMAKE_FIND_USE_CMAKE_PATH].
C:/Users/<username>/AppData/Local/Android/Sdk/ndk/23.1.7779620/toolchains/llvm/prebuilt/windows-x86_64
CMAKE_FRAMEWORK_PATH and CMAKE_APPBUNDLE_PATH variables
[CMAKE_FIND_USE_CMAKE_PATH].
Env variable OpenCV_DIR [CMAKE_FIND_USE_CMAKE_ENVIRONMENT_PATH].
none
CMAKE_PREFIX_PATH env variable [CMAKE_FIND_USE_CMAKE_ENVIRONMENT_PATH].
none
CMAKE_FRAMEWORK_PATH and CMAKE_APPBUNDLE_PATH env variables
[CMAKE_FIND_USE_CMAKE_ENVIRONMENT_PATH].
none
Paths specified by the find_package HINTS option.
none
Standard system environment variables
[CMAKE_FIND_USE_SYSTEM_ENVIRONMENT_PATH].
<a lot of unrelated directories>
CMake User Package Registry [CMAKE_FIND_USE_PACKAGE_REGISTRY].
none
CMake variables defined in the Platform file
[CMAKE_FIND_USE_CMAKE_SYSTEM_PATH].
C:/Users/<username>/AppData/Local/Android/Sdk/cmake/3.18.1
<other unrelated directories>
CMake System Package Registry
[CMAKE_FIND_PACKAGE_NO_SYSTEM_PACKAGE_REGISTRY].
none
Paths specified by the find_package PATHS option.
none
find_package considered the following locations for the Config module:
C:/Users/<username>/AppData/Local/Android/Sdk/ndk/23.1.7779620/toolchains/llvm/prebuilt/windows-x86_64/OpenCVConfig.cmake
C:/Users/<username>/AppData/Local/Android/Sdk/ndk/23.1.7779620/toolchains/llvm/prebuilt/windows-x86_64/opencv-config.cmake
C:/Users/<username>/AppData/Local/Android/Sdk/ndk/23.1.7779620/OpenCVConfig.cmake
C:/Users/<username>/AppData/Local/Android/Sdk/ndk/23.1.7779620/opencv-config.cmake
C:/Users/<username>/AppData/Local/Android/Sdk/ndk/23.1.7779620/toolchains/llvm/prebuilt/windows-x86_64/sysroot/usr/lib/i686-linux-android/21/OpenCVConfig.cmake
C:/Users/<username>/AppData/Local/Android/Sdk/ndk/23.1.7779620/toolchains/llvm/prebuilt/windows-x86_64/sysroot/usr/lib/i686-linux-android/21/opencv-config.cmake
C:/Users/<username>/AppData/Local/Android/Sdk/ndk/23.1.7779620/toolchains/llvm/prebuilt/windows-x86_64/sysroot/usr/local/OpenCVConfig.cmake
C:/Users/<username>/AppData/Local/Android/Sdk/ndk/23.1.7779620/toolchains/llvm/prebuilt/windows-x86_64/sysroot/usr/local/opencv-config.cmake
C:/Users/<username>/AppData/Local/Android/Sdk/ndk/23.1.7779620/toolchains/llvm/prebuilt/windows-x86_64/sysroot/usr/OpenCVConfig.cmake
C:/Users/<username>/AppData/Local/Android/Sdk/ndk/23.1.7779620/toolchains/llvm/prebuilt/windows-x86_64/sysroot/usr/opencv-config.cmake
C:/Users/<username>/AppData/Local/Android/Sdk/ndk/23.1.7779620/toolchains/llvm/prebuilt/windows-x86_64/sysroot/OpenCVConfig.cmake
C:/Users/<username>/AppData/Local/Android/Sdk/ndk/23.1.7779620/toolchains/llvm/prebuilt/windows-x86_64/sysroot/opencv-config.cmake
The file was not found.
1条答案
按热度按时间cs7cruho1#
因此,问题实际上是,对于Android(可能还有iOS),CMake将
CMAKE_FIND_ROOT_PATH_MODE_PACKAGE
变量(和其他CMAKE_FIND_ROOT_PATH_MODE_*
变量)设置为ONLY
,这使得find_package
(和其他find_*
函数)将CMAKE_FIND_ROOT_PATH
列表中的路径作为前缀。要覆盖此设置,可以执行以下操作:
CMAKE_FIND_ROOT_PATH_MODE_*
设置为BOTH
或NEVER
find_*
调用使用CMAKE_FIND_ROOT_PATH_BOTH
或NO_CMAKE_FIND_ROOT_PATH
它还应该修复CMake忽略来自
HINTS
、PATHS
和其他前缀构造步骤的路径时的问题。