External/Libraries/spdlog/Findspdlog.cmake

# SPDLOG库分为1.14.1和1.15.1，1.14.1是使用Qt5.12.12编译的，只能使用在Qt5环境中
# 1.15.1是没有带Qt的环境编译的，支持Qt5和Qt6，编译器版本是GCC11.3
# 静态库好像不能跨GCC版本使用，链接时会报错，提示找不到符号

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


#寻找头文件，需要判断gcc编译器版本
unset(spdlog_INCLUDE_DIR CACHE)
unset(SPDLOG_INC_DIR CACHE)
#判断操作系统
if(CMAKE_SYSTEM_NAME MATCHES "Windows")
    if(CMAKE_CXX_COMPILER_ID MATCHES "GNU")
        if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 7.3)
            message(STATUS "GCC编译器版本过低，请使用GCC7.3及以上版本")
            return()
        elseif(CMAKE_CXX_COMPILER_VERSION VERSION_LESS 11.2 AND CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 7.2)
            set(SPDLOG_V 1.14.1)
            set(SPDLOG_INC_DIR ${CMAKE_CURRENT_LIST_DIR}/include_1.14.1)
        elseif(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER 11.1)
            set(SPDLOG_V 1.15.1)
            set(SPDLOG_INC_DIR ${CMAKE_CURRENT_LIST_DIR}/include_1.15.1)
        endif()
    elseif(CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
        #MSVC编译器
        set(SPDLOG_V 1.14.1)
        set(SPDLOG_INC_DIR ${CMAKE_CURRENT_LIST_DIR}/include_1.14.1)
    endif()
    
elseif(CMAKE_SYSTEM_NAME MATCHES "Linux")
    set(SPDLOG_V 1.14.1)
    set(SPDLOG_INC_DIR ${CMAKE_CURRENT_LIST_DIR}/include_1.14.1)
elseif(CMAKE_SYSTEM_NAME MATCHES "Darwin")
    set(SPDLOG_V 1.14.1)
    set(SPDLOG_INC_DIR ${CMAKE_CURRENT_LIST_DIR}/include_1.14.1)
else()
    message(STATUS "操作系统：未知")
endif()



list(APPEND spdlog_INCLUDE_DIR ${SPDLOG_INC_DIR})
list(APPEND spdlog_INCLUDE_DIR ${SPDLOG_INC_DIR}/spdlog)
#包含fmt头文件，使用fmt的时候包含fmt/bundled/format.h这样的完整目录
list(APPEND spdlog_INCLUDE_DIR ${SPDLOG_INC_DIR}/spdlog/fmt)
list(APPEND spdlog_INCLUDE_DIR ${CMAKE_CURRENT_LIST_DIR}/Logs)

#添加源文件
unset(spdlog_SOURCES CACHE)
set(spdlog_SOURCES ${CMAKE_CURRENT_LIST_DIR}/Logs/loginit.cpp)


unset(spdlog_LIBRARY CACHE)
unset(spdlog_STATIC_LIBRARY CACHE)
unset(SPDLOG_LIB_DIR CACHE)
#查找库文件，需要判断操作系统，位数
if(CMAKE_SYSTEM_NAME MATCHES "Windows")
    #GCC编译器
    if(CMAKE_CXX_COMPILER_ID MATCHES "GNU")
        #64位
        if(CMAKE_SIZEOF_VOID_P EQUAL 8)
            #GCC7.3版本
            if(SPDLOG_V EQUAL 1.14.1)
                set(SPDLOG_LIB_DIR ${CMAKE_CURRENT_LIST_DIR}/windows/gcc7.3)
            #GCC11.2版本
            elseif(SPDLOG_V EQUAL 1.15.1)
                set(SPDLOG_LIB_DIR ${CMAKE_CURRENT_LIST_DIR}/windows/gcc11.2)
            #默认版本
            else()
                set(SPDLOG_LIB_DIR ${CMAKE_CURRENT_LIST_DIR}/windows/gcc11.2)
            endif()
            #动态库
            if(CMAKE_BUILD_TYPE MATCHES "Debug")
                list(APPEND spdlog_LIBRARY ${SPDLOG_LIB_DIR}/libspdlogd.dll)
            else()
                list(APPEND spdlog_LIBRARY ${SPDLOG_LIB_DIR}/libspdlog.dll)
            endif()
            #静态库
            if(ENABLE_SPDLOG_STATIC_LIB)
                if(CMAKE_BUILD_TYPE MATCHES "Debug")
                    list(APPEND spdlog_STATIC_LIBRARY ${SPDLOG_LIB_DIR}/libspdlogd.a)
                else()
                    list(APPEND spdlog_STATIC_LIBRARY ${SPDLOG_LIB_DIR}/libspdlog.a)
                endif()
            endif()
        #32位
        elseif(CMAKE_SIZEOF_VOID_P EQUAL 4)
            set(SPDLOG_LIB_DIR ${CMAKE_CURRENT_LIST_DIR}/windows/gcc7.3_32)
            #动态库
            if(CMAKE_BUILD_TYPE MATCHES "Debug")
                list(APPEND spdlog_LIBRARY ${SPDLOG_LIB_DIR}/libspdlogd.dll)
            else()
                list(APPEND spdlog_LIBRARY ${SPDLOG_LIB_DIR}/libspdlog.dll)
            endif()
            #静态库
            if(ENABLE_SPDLOG_STATIC_LIB)
                if(CMAKE_BUILD_TYPE MATCHES "Debug")
                    list(APPEND spdlog_STATIC_LIBRARY ${SPDLOG_LIB_DIR}/libspdlogd.a)
                else()
                    list(APPEND spdlog_STATIC_LIBRARY ${SPDLOG_LIB_DIR}/libspdlog.a)
                endif()
            endif()
        endif()
    #MSVC编译器
    elseif(CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
        set(SPDLOG_LIB_DIR ${CMAKE_CURRENT_LIST_DIR}/windows/msvc2022)
        if(CMAKE_BUILD_TYPE MATCHES "Debug")
            list(APPEND spdlog_LIBRARY ${SPDLOG_LIB_DIR}/spdlogd.lib)
        else()
            list(APPEND spdlog_LIBRARY ${SPDLOG_LIB_DIR}/spdlog.lib)
        endif()
    endif()
#添加Linux版本
elseif(CMAKE_SYSTEM_NAME MATCHES "Linux")
    set(SPDLOG_LIB_DIR ${CMAKE_CURRENT_LIST_DIR}/linux/gcc8.3)
    if(CMAKE_BUILD_TYPE MATCHES "Debug")
        list(APPEND spdlog_LIBRARY ${SPDLOG_LIB_DIR}/libspdlogd.so)
    else()
        list(APPEND spdlog_LIBRARY ${SPDLOG_LIB_DIR}/libspdlog.so)
    endif()
    # list(APPEND spdlog_LIBRARY pthread)
    if(ENABLE_SPDLOG_STATIC_LIB)
        if(CMAKE_BUILD_TYPE MATCHES "Debug")
            list(APPEND spdlog_STATIC_LIBRARY ${SPDLOG_LIB_DIR}/libspdlogd.a)
        else()
            list(APPEND spdlog_STATIC_LIBRARY ${SPDLOG_LIB_DIR}/libspdlog.a)
        endif()
        #这里需要显式的链接依赖库，或者使用target_link_options(appname PRIVATE "-Wl,--copy-dt-needed-entries")来让gcc递归搜索依赖库
        # list(APPEND spdlog_STATIC_LIBRARY pthread)
    endif()
#MacOS版本
elseif(CMAKE_SYSTEM_NAME MATCHES "Darwin")
    #MacOS版本
    if(CMAKE_BUILD_TYPE MATCHES "Debug")
        list(APPEND spdlog_LIBRARY ${CMAKE_CURRENT_LIST_DIR}/macos/libspdlog.dylib)
    else()
        list(APPEND spdlog_LIBRARY ${CMAKE_CURRENT_LIST_DIR}/macos/libspdlog.dylib)
    endif()

endif()


#检查是否找到库
if(spdlog_INCLUDE_DIR AND (spdlog_LIBRARY OR spdlog_STATIC_LIBRARY))
    set(spdlog_FOUND TRUE)
    set(spdlog_VERSION ${SPDLOG_V})

    message(STATUS "如果需要使用静态库，定义“ ENABLE_SPDLOG_STATIC_LIB ”变量")
    # message(STATUS "include : spdlog_INCLUDE_DIR")
    # if(spdlog_LIBRARY)
    #     message(STATUS "Library : spdlog_LIBRARY")
    # endif()
    # if(ENABLE_SPDLOG_STATIC_LIB)
    #     message(STATUS "Static Library : spdlog_STATIC_LIBRARY")
    # endif()
    message(STATUS "使用方式: target_link_libraries(External::spdlog)")
    

else()
    set(spdlog_FOUND FALSE)
endif()

message(STATUS "spdlog FOUND: ${spdlog_FOUND}")
message(STATUS "spdlog Version: ${spdlog_VERSION}")
message(STATUS "--------------------------------------------------")


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

        #添加库文件
        if(ENABLE_SPDLOG_STATIC_LIB)
            set_target_properties(External::spdlog PROPERTIES
                IMPORTED_LOCATION "${spdlog_STATIC_LIBRARY}")
        else()
            set_target_properties(External::spdlog PROPERTIES
                IMPORTED_LOCATION "${spdlog_LIBRARY}")
        endif()
        #添加spdlog需要的依赖库
        if(CMAKE_SYSTEM_NAME MATCHES "Linux")
            set_target_properties(External::spdlog PROPERTIES
                INTERFACE_LINK_LIBRARIES "pthread")
        elseif(CMAKE_SYSTEM_NAME MATCHES "Windows")
            
        endif()

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

# 标记这些变量为高级变量
mark_as_advanced(
    spdlog_INCLUDE_DIR 
    spdlog_LIBRARY 
    spdlog_STATIC_LIBRARY
)