# 防止重复引入
if(CART_ALREADY_INCLUDED)
	return()
endif()
set(CART_ALREADY_INCLUDED 1)

# find_path 搜索包含某个文件的路径
# 如果在某个路径下发现了该文件，该结果会被存储到该变量中；如果没有找到，存储的结果将会是<VAR>-NOTFOUND
find_path(CART_DIRS 
	NAMES 
		CARTDll.dll CARTDll.lib
	PATHS 
		${CMAKE_SOURCE_DIR}/extlib/CART 
	NO_SYSTEM_ENVIRONMENT_PATH
	NO_CMAKE_SYSTEM_PATH
)

set(CART_VERSION_MAJOR 1)
set(CART_VERSION_MINOR 0)
set(CART_VERSION_PATCH 0)

set(CART_VERSION "${CART_VERSION_MAJOR}.${CART_VERSION_MINOR}.${CART_VERSION_PATCH}")


find_path(CART_LIBRARY_DIRS
	NAMES
        CARTDll.lib
	HINTS
		${CART_DIRS}
)

find_path(CART_BINARY_DIRS
	NAMES
        CARTDll.dll 
	HINTS
		${CART_DIRS}
)

set(CART_LIBRARIES GJDM::CART)
add_library(GJDM::CART SHARED IMPORTED)
set_property(TARGET GJDM::CART PROPERTY INTERFACE_INCLUDE_DIRECTORIES ${CART_INCLUDE_DIRS})
set_property(TARGET GJDM::CART APPEND PROPERTY IMPORTED_CONFIGURATIONS RELEASE)
set_property(TARGET GJDM::CART APPEND PROPERTY IMPORTED_CONFIGURATIONS DEBUG)
set_target_properties(GJDM::CART PROPERTIES
                IMPORTED_IMPLIB_DEBUG  "${CART_DIRS}/CARTDll.lib"
                IMPORTED_LOCATION_DEBUG  "${CART_DIRS}/CARTDll.dll"
                IMPORTED_IMPLIB_RELEASE  "${CART_DIRS}/CARTDll.lib"
                IMPORTED_LOCATION_RELEASE  "${CART_DIRS}/CARTDll.dll "
	)

include(FindPackageHandleStandardArgs)

# 如果找到所有需要的变量，并且版本匹配，则将CART_FOUND变量设置为TRUE
find_package_handle_standard_args(CART
	FOUND_VAR
        CART_FOUND
	REQUIRED_VARS
        CART_DIRS
        CART_BINARY_DIRS
        CART_LIBRARY_DIRS
        CART_LIBRARIES
	VERSION_VAR
        CART_VERSION
)