-- 工程名
set_project("stm32h7")

-- 定义工具链
toolchain("arm-none-eabi")
    set_kind("standalone")
    set_sdkdir("/home/time/doc/mybin/arm-none-eabi")
toolchain_end()

-- 使用自定义的 arm-none-eabi 工具链
set_toolchains("arm-none-eabi")

-- 设置平台与架构
set_plat("MCU")
set_arch("ARM Cortex-M7")

-- 编译优化与调试
set_optimize("none")
set_symbols("debug")

-- 全局架构 & FPU
add_cxflags("-mthumb", "-mcpu=cortex-m7", "-mfpu=fpv5-d16", "-mfloat-abi=hard", {force = true})
add_asflags("-mthumb", "-mcpu=cortex-m7", "-mfpu=fpv5-d16", "-mfloat-abi=hard", {force = true})
add_ldflags("-mthumb", "-mcpu=cortex-m7", "-mfpu=fpv5-d16", "-mfloat-abi=hard", {force = true})

-- 全局头文件路径 (libopencm3)
add_includedirs("../../libopencm3/include")

-- 全局链接 libopencm3
add_linkdirs("../../libopencm3/lib")
add_links("opencm3_stm32h7")

-- 全局额外链接选项
add_ldflags("-T./cortex-m-generic.ld", "--static", "-nostartfiles", "-Wl,--gc-sections", {force = true})
add_syslinks("c", "gcc", "nosys")

-- 全局宏定义
add_defines("STM32H7")

-- 全局用户头文件路径
add_includedirs("user/inc")

-- 目标程序
target("gpio-lib")
    set_kind("binary")
    add_files("user/src/*.c")
    set_targetdir("$(projectdir)/bin")
    add_deps("lib")

    on_load(function (target)
        target:set("filename", target:name() .. ".elf")
        -- 生成 map 文件并带 cref，显示 cross reference
        target:add("ldflags",
            "-Wl,-Map=" .. path.join(target:targetdir(), target:name() .. ".map") .. ",-cref",
            {force = true}
        )
    end)

    -- 生成额外文件
    after_build(function (target)
        local elf = target:targetfile()
        local bindir = target:targetdir()
        local name = target:name()

        -- 常见格式
        os.execv("arm-none-eabi-objcopy", {"-Obinary", elf, path.join(bindir, name .. ".bin")})
        os.execv("arm-none-eabi-objcopy", {"-Oihex",   elf, path.join(bindir, name .. ".hex")})
        os.execv("arm-none-eabi-objcopy", {"-Osrec",   elf, path.join(bindir, name .. ".srec")})
        os.execv("arm-none-eabi-objdump", {"-S", elf}, {stdout = path.join(bindir, name .. ".list")})

        -- 🔥 符号表 (对应 MDK Image Symbol Table)
        os.execv("arm-none-eabi-nm", {"-n", elf}, {stdout = path.join(bindir, name .. ".sym")})

        -- 🔥 段大小统计 (对应 MDK Image component sizes)
        os.execv("arm-none-eabi-size", {"-B", elf}, {stdout = path.join(bindir, name .. ".size")})
    end)

    on_clean(function (target)
        os.rm("build")
        os.rm("bin")
    end)

target("lib")
    set_kind("phony")
    add_deps("lib-ebtn")

target("lib-ebtn")
    set_kind("static")
    add_includedirs("lib/ebtn", {public = true})
    add_files("lib/ebtn/*.c")