External/Libraries/CURL/FindCURL.cmake

#CURL库

message(STATUS "***** Find CURL Library *****")

#寻找头文件
find_path(CURL_INCLUDE_DIR
    NAMES curl/curl.h
    PATHS ${CMAKE_CURRENT_LIST_DIR}/include
    NO_DEFAULT_PATH
)



#查找库文件，需要判断操作系统，位数
if(CMAKE_SYSTEM_NAME MATCHES "Windows")
    if(CMAKE_CXX_COMPILER_ID MATCHES "GNU")
        if(CMAKE_SIZEOF_VOID_P EQUAL 8)
            if(CMAKE_BUILD_TYPE MATCHES "Debug")
                list(APPEND CURL_LIBRARY ${CMAKE_CURRENT_LIST_DIR}/windows/gcc7.3/libcurl.dll)
            else()
                list(APPEND CURL_LIBRARY ${CMAKE_CURRENT_LIST_DIR}/windows/gcc7.3/libcurl.dll)
            endif()
        elseif(CMAKE_SIZEOF_VOID_P EQUAL 4)
            if(CMAKE_BUILD_TYPE MATCHES "Debug")
                list(APPEND CURL_LIBRARY ${CMAKE_CURRENT_LIST_DIR}/windows/gcc7.3_32/libcurl.dll)
            else()
                list(APPEND CURL_LIBRARY ${CMAKE_CURRENT_LIST_DIR}/windows/gcc7.3_32/libcurl.dll)
            endif()
        endif()
    elseif(CMAKE_CXX_COMPILER_ID MATCHES "MSVC")

    endif()
#添加Linux版本
elseif(CMAKE_SYSTEM_NAME MATCHES "Linux")
    if(CMAKE_BUILD_TYPE MATCHES "Debug")
        list(APPEND CURL_LIBRARY ${CMAKE_CURRENT_LIST_DIR}/linux/gcc8.3/libcurl.so)
        list(APPEND CURL_STATIC_LIBRARY ${CMAKE_CURRENT_LIST_DIR}/linux/gcc8.3/libcurl.a)
    else()
        list(APPEND CURL_LIBRARY ${CMAKE_CURRENT_LIST_DIR}/linux/gcc8.3/libcurl.so)
        list(APPEND CURL_STATIC_LIBRARY ${CMAKE_CURRENT_LIST_DIR}/linux/gcc8.3/libcurl.a)
    endif()
endif()


#设置查找到后的变量
if(CURL_INCLUDE_DIR AND ( CURL_LIBRARY OR CURL_STATIC_LIBRARY) )
    set(CURL_FOUND TRUE)
    set(CURL_VERSION 7.88.1)

    if(CURL_INCLUDE_DIR AND CURL_LIBRARY AND CURL_STATIC_LIBRARY)
        message(STATUS "include : CURL_INCLUDE_DIR")
        message(STATUS "Library : CURL_LIBRARY")
        message(STATUS "Static Library : CURL_STATIC_LIBRARY")
    elseif(CURL_INCLUDE_DIR AND CURL_LIBRARY)
        message(STATUS "include : CURL_INCLUDE_DIR")
        message(STATUS "Library : CURL_LIBRARY")
    endif()
    message(STATUS "target_link_libraries(External::curl)")
else()
    set(CURL_FOUND FALSE)
endif()


message(STATUS "CURL Found : ${CURL_FOUND}")
message(STATUS "CURL Version : ${CURL_VERSION}")
message(STATUS "--------------------------------------------------")


#导入目标
if(CURL_FOUND)
    if(NOT TARGET External::curl)
        add_library(External::curl UNKNOWN IMPORTED)
        #添加头文件
        set_target_properties(External::curl PROPERTIES
            INTERFACE_INCLUDE_DIRECTORIES "${CURL_INCLUDE_DIR}")

        #添加库文件

        set_target_properties(External::curl PROPERTIES
            IMPORTED_LOCATION "${CURL_LIBRARY}")
        #添加spdlog需要的依赖库
        # set_target_properties(External::curl PROPERTIES
        #     INTERFACE_LINK_LIBRARIES "pthread")


        #添加源文件
        # set_target_properties(External::curl PROPERTIES
        #    INTERFACE_SOURCES "${hiredis_SOURCES}")
    endif()
endif()

# 标记这些变量为高级变量
mark_as_advanced(
    CURL_INCLUDE_DIR
    CURL_LIBRARY
)