使用错误数量的参数调用 CMake 设置目标属性

Question

我正在尝试在我的项目中使用 OpenCV 库，但在运行时出现此错误：

构建命令失败。执行过程时出错 D:\Sdk\cmake\3.6.4111459\bin\cmake.exe 带参数 {-HC:\Users\Mouad AITALI\AndroidStudioProjects\BGREMOVER\app -BC:\Users\Mouad AITALI\AndroidStudioProjects\BGREMOVER\app.cxx\cmake\debug\arm64-v8a -DANDROID_ABI=arm64-v8a -DANDROID_PLATFORM=android-16 -DCMAKE_LIBRARY_OUTPUT_DIRECTORY=C:\Users\Mouad AITALI\AndroidStudioProjects\BGREMOVER\app\build\intermediates\cmake\debug\obj\arm64-v8a -DCMAKE_BUILD_TYPE=调试 -DANDROID_NDK=D:\Sdk\ndk\19.2.5345600 -DCMAKE_CXX_FLAGS=-std=c++11 -DCMAKE_TOOLCHAIN_FILE=D:\Sdk\ndk\19.2.5345600\build\cmake\android.toolchain.cmake -DCMAKE_MAKE_PROGRAM=D:\Sdk\cmake\3.6.4111459\bin\ninja.exe -GAndroid Gradle - Ninja} -- 配置不完整，出现错误！另请参阅“C:/Users/Mouad AITALI/AndroidStudioProjects/BGREMOVER/app/.cxx/cmake/debug/arm64-v8a/CMakeFiles/CMakeOutput.log”。

CMakeLists.txt:13 (set_target_properties) 处的 CMake 错误：
使用错误数量的参数调用 set_target_properties。

CMakeLists.txt

#declare folder path
set(pathToProject C:\\Users\\Mouad;AITALI\\AndroidStudioProjects\\BGREMOVER)

cmake_minimum_required(VERSION 3.4.1)

set(CMAKE_VERBOSE_MAKEFILE on)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=gnu++11")

include_directories(${pathToOpenCv}/sdk/native/jni/include)

#library location
add_library(lib_opencv SHARED IMPORTED)
set_target_properties(lib_opencv PROPERTIES IMPORTED_LOCATION ${pathToProject}/app/src/main/jniLibs/${ANDROID_ABI}/libopencv_java3.so)

#define libraries
add_library(native-lib SHARED src/main/cpp/native-lib.cpp)
add_library(grabcut SHARED src/main/cpp/jni-grabcut-lib.cpp src/main/cpp/grabcutter_p.cpp src/main/cpp/grabcutter_p.h)

find_library(log-lib log)

#target libraries
target_link_libraries(native-lib ${log-lib} lib_opencv)
target_link_libraries(grabcut ${log-lib} lib_opencv)

Answer 1

如前所述，CMake 使用分号 ; 来定义列表。因此，如果路径包含分号，则必须将定义和使用变量pathToProject 的位置用双引号括起来：

set(pathToProject "C:\\Users\\Mouad;AITALI\\AndroidStudioProjects\\BGREMOVER")

...

set_target_properties(lib_opencv PROPERTIES IMPORTED_LOCATION "${pathToProject}/app/src/main/jniLibs/${ANDROID_ABI}/libopencv_java3.so")

IMPORTED_LOCATION 属性只接受一个值。因此，当您提供该属性的列表时，set_target_properties() 命令无法正确解析参数，从而产生错误。