来自parent die cmake文件夹的add_subdirectory中的CMake Find_Package

Question

我有一个CMake结构：

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

并在上面的CMakeLists.txt中呼叫

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

将plugin/CMakeLists.txt子目录添加到上面定义的目录之外。

在第二个CMakeLists.txt中，我致电FindPackage(MyPackage REQUIRED)

给出错误信息：

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.

有没有办法让它使用mainproject文件夹中的cmake文件？

Answer 1

只需按照给定的错误消息，即这必须有所帮助：

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