CMake的FindPackage在從父顯示目錄cmake的文件夾add_subdirectory

Question

我有一個CMake的結構：

• mainproject/
• mainproject/cmake/FindMyPackage.cmake
• mainproject/CMakeLists.txt
• plugin/
• plugin/CMakeLists.txt

和上述CMakeLists.txt我打電話

add_subdirectory(${LOOP_SUBDIR}/${subdir} examples/${subdir}) 

其中添加上述定義的目錄外plugin/CMakeLists.txt子目錄。

在這第二CMakeLists.txt我打電話FindPackage(MyPackage REQUIRED)

這給錯誤消息：

CMake Error at [...]/plugin/CMakeLists.txt:9 (find_package): 
    By not providing "FindMyPackage.cmake" in CMAKE_MODULE_PATH this project has 
    asked CMake to find a package configuration file provided by "MyPackage", but 
    CMake did not find one. 

有沒有什麼辦法讓它用在mainproject文件夾中的文件的CMake？

Answer 1

只要按照給定的錯誤信息，即它必須幫助：

# CMakeLists.txt 
list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}/mainproject/cmake") 
add_subdirectory(plugin)