我们的Xamarin.iOS构建需要将近5分钟时间。有没有人知道为什么这么慢呢？我们链接了许多本地库。如果我们可以在不清理的情况下进行构建，那就不会那么糟糕。但是，由于这个Xamarin bug（https://bugzilla.xamarin.com/show_bug.cgi?id=52165），我们只能进行清理构建。谢谢。
Tasks perfomance summary:
0.165 ms AssignCulture 1 calls
4.000 ms AssignProjectConfiguration 4 calls
16.440 ms AssignTargetPath 18 calls
24836.932 ms Codesign 1 calls
7561.935 ms CodesignVerify 1 calls
30.837 ms CollectBundleResources 2 calls
0.487 ms CollectFrameworks 1 calls
15.252 ms CollectITunesArtwork 1 calls
18.556 ms CompileAppManifest 1 calls
25.155 ms CompileEntitlements 1 calls
27.335 ms CompileITunesMetadata 1 calls
15.406 ms ComputeBundleResourceOutputPaths 1 calls
737.619 ms Copy 8 calls
0.689 ms CreateAssetPackManifest 1 calls
0.925 ms CreateDebugConfiguration 1 calls
12.812 ms CreateDebugSettings 1 calls
87.254 ms CreateItem 108 calls
0.839 ms CreatePkgInfo 1 calls
0.193 ms CreateProperty 1 calls
2997.449 ms Csc 1 calls
1.307 ms Delete 4 calls
0.669 ms DetectDebugNetworkConfiguration 1 calls
2.607 ms DetectSdkLocations 1 calls
138.342 ms DetectSigningIdentity 1 calls
24605.093 ms DSymUtil 1 calls
30.904 ms EmbedMobileProvision 1 calls
1.635 ms FindAppConfigFile 1 calls
1.453 ms FindItemWithLogicalName 1 calls
7.779 ms FindUnderPath 1 calls
1.678 ms GetNativeExecutableName 1 calls
0.589 ms GetReferenceAssemblyPaths 1 calls
1.546 ms MakeDir 2 calls
0.622 ms Message 2 calls
1359.395 ms MSBuild 5 calls
272271.284 ms MTouch 1 calls
3888.247 ms OptimizeImage 1 calls
157.087 ms OptimizePropertyList 5 calls
0.598 ms ParseExtraMtouchArgs 1 calls
0.319 ms ReadLinesFromFile 1 calls
0.989 ms RemoveDir 3 calls
46.349 ms RemoveDuplicates 1 calls
81.335 ms ResolveAssemblyReference 1 calls
121.745 ms SmartCopy 1 calls
6812.551 ms SpotlightIndexer 1 calls
1.953 ms Touch 2 calls
180.862 ms UnpackLibraryResources 1 calls
2.020 ms ValidateAppBundleTask 1 calls
1.478 ms WriteItemsToFile 2 calls
4.712 ms WriteLinesToFile 2 calls
构建成功。 0个警告 0个错误
耗时00:05:46.1791850