iPhoneOS12.1.sdk，低版本xcode不能编译程序到高版本的手机上

 属性            大小     日期    时间   名称
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     目录           0  2018-10-20 05:04  iPhoneOS12.1.sdk
     文件         195  2018-10-09 03:51  iPhoneOS12.1.sdkEntitlements.plist
     文件        1673  2018-10-09 03:51  iPhoneOS12.1.sdkSDKSettings.plist
     目录           0  2018-10-20 05:04  iPhoneOS12.1.sdkSystem
     目录           0  2018-10-20 05:05  iPhoneOS12.1.sdkSystemLibrary
     目录           0  2018-10-20 05:04  iPhoneOS12.1.sdkSystemLibraryCoreServices
     文件         489  2018-10-19 11:09  iPhoneOS12.1.sdkSystemLibraryCoreServicesSystemVersion.plist
     目录           0  2018-10-20 05:04  iPhoneOS12.1.sdkSystemLibraryframeworks
     目录           0  2018-10-20 05:05  iPhoneOS12.1.sdkSystemLibraryframeworksAccelerate.framework
     文件       98568  2018-10-20 05:05  iPhoneOS12.1.sdkSystemLibraryframeworksAccelerate.frameworkAccelerate.tbd
     目录           0  2018-10-20 05:04  iPhoneOS12.1.sdkSystemLibraryframeworksAccelerate.frameworkframeworks
     目录           0  2018-10-20 05:05  iPhoneOS12.1.sdkSystemLibraryframeworksAccelerate.frameworkframeworksvecLib.framework
     目录           0  2018-10-20 09:48  iPhoneOS12.1.sdkSystemLibraryframeworksAccelerate.frameworkframeworksvecLib.frameworkHeaders
     目录           0  2018-10-20 09:48  iPhoneOS12.1.sdkSystemLibraryframeworksAccelerate.frameworkframeworksvecLib.frameworkHeadersBNNS
     文件       23108  2018-10-16 13:39  iPhoneOS12.1.sdkSystemLibraryframeworksAccelerate.frameworkframeworksvecLib.frameworkHeadersBNNSnns.h
     文件       47325  2018-10-16 13:39  iPhoneOS12.1.sdkSystemLibraryframeworksAccelerate.frameworkframeworksvecLib.frameworkHeaderscblas.h
     文件      495337  2018-08-21 09:19  iPhoneOS12.1.sdkSystemLibraryframeworksAccelerate.frameworkframeworksvecLib.frameworkHeadersclapack.h
     目录           0  2018-10-20 09:48  iPhoneOS12.1.sdkSystemLibraryframeworksAccelerate.frameworkframeworksvecLib.frameworkHeadersLinearAlgebra
     文件        7868  2018-08-21 09:19  iPhoneOS12.1.sdkSystemLibraryframeworksAccelerate.frameworkframeworksvecLib.frameworkHeadersLinearAlgebraarithmetic.h
     文件        3780  2018-10-20 05:05  iPhoneOS12.1.sdkSystemLibraryframeworksAccelerate.frameworkframeworksvecLib.frameworkHeadersLinearAlgebraase.h
     文件        2874  2018-10-20 05:05  iPhoneOS12.1.sdkSystemLibraryframeworksAccelerate.frameworkframeworksvecLib.frameworkHeadersLinearAlgebralinear_systems.h
     文件         614  2018-10-20 05:05  iPhoneOS12.1.sdkSystemLibraryframeworksAccelerate.frameworkframeworksvecLib.frameworkHeadersLinearAlgebraLinearAlgebra.h
     文件       20575  2018-10-20 05:07  iPhoneOS12.1.sdkSystemLibraryframeworksAccelerate.frameworkframeworksvecLib.frameworkHeadersLinearAlgebramatrix.h
     文件        1769  2018-10-20 05:05  iPhoneOS12.1.sdkSystemLibraryframeworksAccelerate.frameworkframeworksvecLib.frameworkHeadersLinearAlgebra
orms.h
     文件        6113  2018-10-16 13:39  iPhoneOS12.1.sdkSystemLibraryframeworksAccelerate.frameworkframeworksvecLib.frameworkHeadersLinearAlgebraobject.h
     文件        3397  2018-10-20 05:05  iPhoneOS12.1.sdkSystemLibraryframeworksAccelerate.frameworkframeworksvecLib.frameworkHeadersLinearAlgebrasplat.h
     文件       12440  2018-10-16 13:39  iPhoneOS12.1.sdkSystemLibraryframeworksAccelerate.frameworkframeworksvecLib.frameworkHeadersLinearAlgebravector.h
     目录           0  2018-10-20 09:47  iPhoneOS12.1.sdkSystemLibraryframeworksAccelerate.frameworkframeworksvecLib.frameworkHeadersQuadrature
     文件        8395  2018-10-20 05:06  iPhoneOS12.1.sdkSystemLibraryframeworksAccelerate.frameworkframeworksvecLib.frameworkHeadersQuadratureIntegration.h
     文件        1393  2018-10-20 05:05  iPhoneOS12.1.sdkSystemLibraryframeworksAccelerate.frameworkframeworksvecLib.frameworkHeadersQuadratureQuadrature.h
     目录           0  2018-10-20 09:47  iPhoneOS12.1.sdkSystemLibraryframeworksAccelerate.frameworkframeworksvecLib.frameworkHeadersSparse
............此处省略4021个文件信息