rule("engine.api")
    on_load(function (target)
        print(target:name())
        import("api_define")
        api_define(target, target:name())
        local deps = target:get("deps")
        if not deps then return end 
        import("core.project.project")
        local is_static = target:kind() == "static"
        for _,name in ipairs(deps) do 
            local deptarget = project.target(name)
            if deptarget:kind() == "static" then
                api_define(target, name)
            end
        end
    end)