Xamarin iOS 在构建期间无法 AOT 程序集

Question

在构建我正在迁移到统一 Xamarin API 的 Xamarin iOS 应用程序时，我在编译的 AOT 阶段看到构建错误。我看到的错误是“无法 AOT 程序集”，后跟程序集名称。我正在为设备构建调试模式（尽管我目前仅在支持 ARMv7 架构的情况下构建）。

无法通过 AOT 编译的程序集是我为本地第 3 方 iOS 库编写的绑定 DLL（它是专有的，所以很遗憾我不能共享它）。绑定项目 DLL 包含在一个库中，该库被 nuget 打包并安装在我的 Xamarin iOS 应用程序中。

我已经搜索了这个错误，发现了一堆 Xamarin 论坛帖子和 bugzilla 条目，并尝试了大部分建议的步骤，包括：

• 已尝试链接所有程序集并仅链接 SDK 程序集
• 尝试从本机胖二进制文件中删除模拟器架构以减小大小，二进制文件现在为 5.3MB（基于此 Xamarin 论坛帖子https://forums.xamarin.com/discussion/457/error-could-not-aot-the-assembly-servicestack-text-monotouch-dll）
• LLVM 已禁用，但启用和构建会导致相同的错误
• 增量构建已被禁用
• 在 Mac 上的 Xamarin Studio 中构建，结果相同

按照几个论坛帖子中的建议，我已经使用“-v -v -v -v”作为附加的 mtouch 参数运行了一个构建，并附上了构建日志。我还附上了 Mac 上 Visual Studio 和 Xamarin Studio 的系统信息。

详细构建日志

8>------ Rebuild All started: Project: MyCompany.Apps.MyApp, Configuration: Debug iPhone ------
8>  Generated session id: 9004d64cf52132c032e74d7755ff80f4
8>  Generated build app name: MyCompanyMyApp
8>  Connecting to Mac server 172.22.11.38...
8>C:\Program Files (x86)\MSBuild\Xamarin\iOS\Xamarin.iOS.Common.targets(1135,3): warning : This file is set to build for a version older than the deployment target. Functionality may be limited.
8>C:\Program Files (x86)\MSBuild\Xamarin\iOS\Xamarin.iOS.Common.targets(1135,3): warning : This file is set to build for a version older than the deployment target. Functionality may be limited.
8>C:\Program Files (x86)\MSBuild\Xamarin\iOS\Xamarin.iOS.Common.targets(1135,3): warning : Tint Color before iOS 6.0
8>C:\Program Files (x86)\MSBuild\Xamarin\iOS\Xamarin.iOS.Common.targets(1135,3): warning : This file is set to build for a version older than the deployment target. Functionality may be limited.
8>C:\Program Files (x86)\MSBuild\Xamarin\iOS\Xamarin.iOS.Common.targets(1135,3): warning : This file is set to build for a version older than the deployment target. Functionality may be limited.
8>C:\Program Files (x86)\MSBuild\Xamarin\iOS\Xamarin.iOS.Common.targets(1135,3): warning : This file is set to build for a version older than the deployment target. Functionality may be limited.
8>C:\Development\TFS\Repos\My App\MyCompany.Apps.MyApp\BusinessLayer\MbProgressHud.cs(228,15,228,22): warning CS0108: 'MBProgressHUD.Dispose()' hides inherited member 'NSObject.Dispose()'. Use the new keyword if hiding was intended.
8>C:\Development\TFS\Repos\My App\MyCompany.Apps.MyApp\CameraScanning\CameraScanningScreen.cs(25,13,25,33): warning CS4014: Because this call is not awaited, execution of the current method continues before the call is completed. Consider applying the 'await' operator to the result of the call.
8>C:\Development\TFS\Repos\My App\MyCompany.Apps.MyApp\Conductors\UnscannedPositionConductor.cs(349,30,349,32): warning CS0168: The variable 'ex' is declared but never used
8>C:\Development\TFS\Repos\My App\MyCompany.Apps.MyApp\CameraScanning\CameraScanningScreen.cs(19,26,19,32): warning CS0169: The field 'CameraScanningScreen.cancel' is never used
8>  MyCompany.Apps.MyApp -> C:\Development\TFS\Repos\My App\MyCompany.Apps.MyApp\bin\iPhone\Debug\MyApp.exe
8>  Detected signing identity:
8>    Code Signing Key: "iPhone Developer: Daniel Wright (Developer ID)" (Code Signing Thumbprint)
8>    Provisioning Profile: "Unified MyApp Dev" (Provisioning Profile GUID)
8>    Bundle Id: com.mycompany.MyApp
8>    App Id: TEAMID.com.mycompany.MyApp
8>  Mono Ahead of Time compiler - compiling assembly /Users/user/Library/Caches/Xamarin/mtbs/builds/MyCompanyMyApp/9004d64cf52132c032e74d7755ff80f4/obj/iPhone/Debug/mtouch-cache/Build/MyApp.exe
8>  Code: 685280(70%) Info: 9305(0%) Ex Info: 216891(22%) Unwind Info: 22042(2%) Class Info: 8701(0%) PLT: 1504(0%) GOT Info: 26867(2%) Offsets: 7561(0%) GOT: 15588
8>  Compiled: 1101/1101 (100%), No GOT slots: 0 (0%), Direct calls: 78 (9%)
8>  Output file: '/Users/user/Library/Caches/Xamarin/mtbs/builds/MyCompanyMyApp/9004d64cf52132c032e74d7755ff80f4/obj/iPhone/Debug/mtouch-cache/MyApp.exe.armv7.s'.
8>  Linking symbol: '_mono_aot_module_MyApp_info'.
8>  JIT time: 178 ms, Generation time: 188 ms, Assembly+Link time: 2 ms.
8>  Mono Ahead of Time compiler - compiling assembly /Users/user/Library/Caches/Xamarin/mtbs/builds/MyCompanyMyApp/9004d64cf52132c032e74d7755ff80f4/obj/iPhone/Debug/mtouch-cache/Build/MyCompany.Mobile.Scanner.dll
8>  Code: 19632(67%) Info: 206(0%) Ex Info: 6057(20%) Unwind Info: 1425(4%) Class Info: 256(0%) PLT: 54(0%) GOT Info: 1188(4%) Offsets: 447(1%) GOT: 616
8>  Compiled: 47/47 (100%), No GOT slots: 0 (0%), Direct calls: 6 (37%)
8>  Output file: '/Users/user/Library/Caches/Xamarin/mtbs/builds/MyCompanyMyApp/9004d64cf52132c032e74d7755ff80f4/obj/iPhone/Debug/mtouch-cache/MyCompany.Mobile.Scanner.dll.armv7.s'.
8>  Linking symbol: '_mono_aot_module_MyCompany_Mobile_Scanner_info'.
8>  JIT time: 7 ms, Generation time: 7 ms, Assembly+Link time: 0 ms.
8>  Mono Ahead of Time compiler - compiling assembly /Users/user/Library/Caches/Xamarin/mtbs/builds/MyCompanyMyApp/9004d64cf52132c032e74d7755ff80f4/obj/iPhone/Debug/mtouch-cache/Build/MyCompany.MyApp.Logic.dll
8>  Code: 39688(66%) Info: 529(0%) Ex Info: 13263(22%) Unwind Info: 2187(3%) Class Info: 252(0%) PLT: 126(0%) GOT Info: 2766(4%) Offsets: 659(1%) GOT: 1240
8>  Compiled: 75/75 (100%), No GOT slots: 0 (0%), Direct calls: 16 (48%)
8>  Output file: '/Users/user/Library/Caches/Xamarin/mtbs/builds/MyCompanyMyApp/9004d64cf52132c032e74d7755ff80f4/obj/iPhone/Debug/mtouch-cache/MyCompany.MyApp.Logic.dll.armv7.s'.
8>  Linking symbol: '_mono_aot_module_MyCompany_MyApp_Logic_info'.
8>  JIT time: 14 ms, Generation time: 12 ms, Assembly+Link time: 0 ms.
8>  Mono Ahead of Time compiler - compiling assembly /Users/user/Library/Caches/Xamarin/mtbs/builds/MyCompanyMyApp/9004d64cf52132c032e74d7755ff80f4/obj/iPhone/Debug/mtouch-cache/Build/SimpleInjector.dll
8>  Code: 1940724(68%) Info: 28134(0%) Ex Info: 611304(21%) Unwind Info: 55960(1%) Class Info: 8683(0%) PLT: 5839(0%) GOT Info: 156474(5%) Offsets: 24193(0%) GOT: 50748
8>  Compiled: 3768/3768 (100%), No GOT slots: 0 (0%), Direct calls: 714 (20%)
8>  Output file: '/Users/user/Library/Caches/Xamarin/mtbs/builds/MyCompanyMyApp/9004d64cf52132c032e74d7755ff80f4/obj/iPhone/Debug/mtouch-cache/SimpleInjector.dll.armv7.s'.
8>  Linking symbol: '_mono_aot_module_SimpleInjector_info'.
8>  JIT time: 455 ms, Generation time: 496 ms, Assembly+Link time: 11 ms.
8>  Mono Ahead of Time compiler - compiling assembly /Users/user/Library/Caches/Xamarin/mtbs/builds/MyCompanyMyApp/9004d64cf52132c032e74d7755ff80f4/obj/iPhone/Debug/mtouch-cache/Build/mscorlib.dll
8>  Code: 2082300(63%) Info: 41502(1%) Ex Info: 785618(23%) Unwind Info: 137926(4%) Class Info: 25683(0%) PLT: 7807(0%) GOT Info: 179354(5%) Offsets: 39518(1%) GOT: 45356
8>  Compiled: 9033/9034 (99%), No GOT slots: 6159 (68%), Direct calls: 4126 (27%)
8>  Output file: '/Users/user/Library/Caches/Xamarin/mtbs/builds/MyCompanyMyApp/9004d64cf52132c032e74d7755ff80f4/obj/iPhone/Debug/mtouch-cache/mscorlib.dll.armv7.s'.
8>  Linking symbol: '_mono_aot_module_mscorlib_info'.
8>  JIT time: 965 ms, Generation time: 1545 ms, Assembly+Link time: 9 ms.
8>  Mono Ahead of Time compiler - compiling assembly /Users/user/Library/Caches/Xamarin/mtbs/builds/MyCompanyMyApp/9004d64cf52132c032e74d7755ff80f4/obj/iPhone/Debug/mtouch-cache/Build/LineaProSdk.dll
8>  Code: 560344(73%) Info: 5775(0%) Ex Info: 173294(22%) Unwind Info: 8808(1%) Class Info: 8867(1%) PLT: 498(0%) GOT Info: 3425(0%) Offsets: 4777(0%) GOT: 5520
8>  Compiled: 810/810 (100%), No GOT slots: 0 (0%), Direct calls: 361 (37%)
8>  Output file: '/Users/user/Library/Caches/Xamarin/mtbs/builds/MyCompanyMyApp/9004d64cf52132c032e74d7755ff80f4/obj/iPhone/Debug/mtouch-cache/LineaProSdk.dll.armv7.s'.
8>  Linking symbol: '_mono_aot_module_LineaProSdk_info'.
8>  JIT time: 100 ms, Generation time: 114 ms, Assembly+Link time: 1 ms.
8>  Mono Ahead of Time compiler - compiling assembly /Users/user/Library/Caches/Xamarin/mtbs/builds/MyCompanyMyApp/9004d64cf52132c032e74d7755ff80f4/obj/iPhone/Debug/mtouch-cache/Build/MyCompany.FeatureManagement.dll
8>  Code: 72972(66%) Info: 691(0%) Ex Info: 25265(23%) Unwind Info: 3321(3%) Class Info: 82(0%) PLT: 315(0%) GOT Info: 6593(6%) Offsets: 826(0%) GOT: 2092
8>  Compiled: 133/133 (100%), No GOT slots: 0 (0%), Direct calls: 19 (271%)
8>  Output file: '/Users/user/Library/Caches/Xamarin/mtbs/builds/MyCompanyMyApp/9004d64cf52132c032e74d7755ff80f4/obj/iPhone/Debug/mtouch-cache/MyCompany.FeatureManagement.dll.armv7.s'.
8>  Linking symbol: '_mono_aot_module_MyCompany_FeatureManagement_info'.
8>  JIT time: 21 ms, Generation time: 23 ms, Assembly+Link time: 0 ms.
8>  Mono Ahead of Time compiler - compiling assembly /Users/user/Library/Caches/Xamarin/mtbs/builds/MyCompanyMyApp/9004d64cf52132c032e74d7755ff80f4/obj/iPhone/Debug/mtouch-cache/Build/MyCompany.MvvmMediator.dll
8>  Code: 19120(68%) Info: 155(0%) Ex Info: 6344(22%) Unwind Info: 1080(3%) Class Info: 77(0%) PLT: 51(0%) GOT Info: 1027(3%) Offsets: 298(1%) GOT: 480
8>  Compiled: 39/39 (100%), No GOT slots: 0 (0%), Direct calls: 12 (109%)
8>  Output file: '/Users/user/Library/Caches/Xamarin/mtbs/builds/MyCompanyMyApp/9004d64cf52132c032e74d7755ff80f4/obj/iPhone/Debug/mtouch-cache/MyCompany.MvvmMediator.dll.armv7.s'.
8>  Linking symbol: '_mono_aot_module_MyCompany_MvvmMediator_info'.
8>  JIT time: 5 ms, Generation time: 5 ms, Assembly+Link time: 0 ms.
8>  Mono Ahead of Time compiler - compiling assembly /Users/user/Library/Caches/Xamarin/mtbs/builds/MyCompanyMyApp/9004d64cf52132c032e74d7755ff80f4/obj/iPhone/Debug/mtouch-cache/Build/MyCompany.Infrastructure.CRMApi.RestSharp.dll
8>  Code: 408928(70%) Info: 4642(0%) Ex Info: 129632(22%) Unwind Info: 10518(1%) Class Info: 1032(0%) PLT: 1036(0%) GOT Info: 24321(4%) Offsets: 3809(0%) GOT: 8200
8>  Compiled: 656/656 (100%), No GOT slots: 0 (0%), Direct calls: 166 (164%)
8>  Output file: '/Users/user/Library/Caches/Xamarin/mtbs/builds/MyCompanyMyApp/9004d64cf52132c032e74d7755ff80f4/obj/iPhone/Debug/mtouch-cache/MyCompany.Infrastructure.CRMApi.RestSharp.dll.armv7.s'.
8>  Linking symbol: '_mono_aot_module_MyCompany_Infrastructure_CRMApi_RestSharp_info'.
8>  JIT time: 102 ms, Generation time: 110 ms, Assembly+Link time: 2 ms.
8>  Mono Ahead of Time compiler - compiling assembly /Users/user/Library/Caches/Xamarin/mtbs/builds/MyCompanyMyApp/9004d64cf52132c032e74d7755ff80f4/obj/iPhone/Debug/mtouch-cache/Build/MyCompany.Apns.Models.dll
8>  Code: 14376(73%) Info: 243(1%) Ex Info: 3745(19%) Unwind Info: 233(1%) Class Info: 217(1%) PLT: 3(0%) GOT Info: 329(1%) Offsets: 442(2%) GOT: 392
8>  Compiled: 81/81 (100%), No GOT slots: 0 (0%), Direct calls: 0 (100%)
8>  Output file: '/Users/user/Library/Caches/Xamarin/mtbs/builds/MyCompanyMyApp/9004d64cf52132c032e74d7755ff80f4/obj/iPhone/Debug/mtouch-cache/MyCompany.Apns.Models.dll.armv7.s'.
8>  Linking symbol: '_mono_aot_module_MyCompany_Apns_Models_info'.
8>  JIT time: 2 ms, Generation time: 4 ms, Assembly+Link time: 0 ms.
8>  WARNING: The runtime version supported by this application is unavailable.
8>  Using default runtime: v4.0.30319
8>  Mono Ahead of Time compiler - compiling assembly /Users/user/Library/Caches/Xamarin/mtbs/builds/MyCompanyMyApp/9004d64cf52132c032e74d7755ff80f4/obj/iPhone/Debug/mtouch-cache/Build/RestSharp.MonoTouch.dll
8>  Code: 927864(69%) Info: 12723(0%) Ex Info: 302043(22%) Unwind Info: 27821(2%) Class Info: 4606(0%) PLT: 2160(0%) GOT Info: 44891(3%) Offsets: 11159(0%) GOT: 20856
8>  Compiled: 1756/1756 (100%), No GOT slots: 0 (0%), Direct calls: 137 (10%)
8>  Output file: '/Users/user/Library/Caches/Xamarin/mtbs/builds/MyCompanyMyApp/9004d64cf52132c032e74d7755ff80f4/obj/iPhone/Debug/mtouch-cache/RestSharp.MonoTouch.dll.armv7.s'.
8>  Linking symbol: '_mono_aot_module_RestSharp_MonoTouch_info'.
8>  JIT time: 215 ms, Generation time: 233 ms, Assembly+Link time: 3 ms.
8>  Mono Ahead of Time compiler - compiling assembly /Users/user/Library/Caches/Xamarin/mtbs/builds/MyCompanyMyApp/9004d64cf52132c032e74d7755ff80f4/obj/iPhone/Debug/mtouch-cache/Build/Newtonsoft.Json.dll
8>  Code: 2482700(71%) Info: 30603(0%) Ex Info: 772302(22%) Unwind Info: 68998(1%) Class Info: 10671(0%) PLT: 4816(0%) GOT Info: 99573(2%) Offsets: 25548(0%) GOT: 44084
8>  Compiled: 4386/4386 (100%), No GOT slots: 0 (0%), Direct calls: 490 (9%)
8>  Output file: '/Users/user/Library/Caches/Xamarin/mtbs/builds/MyCompanyMyApp/9004d64cf52132c032e74d7755ff80f4/obj/iPhone/Debug/mtouch-cache/Newtonsoft.Json.dll.armv7.s'.
8>  Linking symbol: '_mono_aot_module_Newtonsoft_Json_info'.
8>  JIT time: 532 ms, Generation time: 631 ms, Assembly+Link time: 9 ms.
8>  Mono Ahead of Time compiler - compiling assembly /Users/user/Library/Caches/Xamarin/mtbs/builds/MyCompanyMyApp/9004d64cf52132c032e74d7755ff80f4/obj/iPhone/Debug/mtouch-cache/Build/System.dll
8>  Code: 825072(63%) Info: 16854(1%) Ex Info: 301613(23%) Unwind Info: 62678(4%) Class Info: 14664(1%) PLT: 3402(0%) GOT Info: 67408(5%) Offsets: 14019(1%) GOT: 20392
8>  Compiled: 3232/3232 (100%), No GOT slots: 2095 (64%), Direct calls: 886 (23%)
8>  Output file: '/Users/user/Library/Caches/Xamarin/mtbs/builds/MyCompanyMyApp/9004d64cf52132c032e74d7755ff80f4/obj/iPhone/Debug/mtouch-cache/System.dll.armv7.s'.
8>  Linking symbol: '_mono_aot_module_System_info'.
8>  JIT time: 388 ms, Generation time: 480 ms, Assembly+Link time: 6 ms.
8>  Mono Ahead of Time compiler - compiling assembly /Users/user/Library/Caches/Xamarin/mtbs/builds/MyCompanyMyApp/9004d64cf52132c032e74d7755ff80f4/obj/iPhone/Debug/mtouch-cache/Build/SQLite.Net.Platform.XamarinIOS.Unified.dll
8>  Code: 46872(71%) Info: 511(0%) Ex Info: 13688(20%) Unwind Info: 2338(3%) Class Info: 289(0%) PLT: 132(0%) GOT Info: 1047(1%) Offsets: 806(1%) GOT: 1160
8>  Compiled: 127/127 (100%), No GOT slots: 0 (0%), Direct calls: 46 (46%)
8>  Output file: '/Users/user/Library/Caches/Xamarin/mtbs/builds/MyCompanyMyApp/9004d64cf52132c032e74d7755ff80f4/obj/iPhone/Debug/mtouch-cache/SQLite.Net.Platform.XamarinIOS.Unified.dll.armv7.s'.
8>  Linking symbol: '_mono_aot_module_SQLite_Net_Platform_XamarinIOS_Unified_info'.
8>  JIT time: 8 ms, Generation time: 12 ms, Assembly+Link time: 0 ms.
8>  Mono Ahead of Time compiler - compiling assembly /Users/user/Library/Caches/Xamarin/mtbs/builds/MyCompanyMyApp/9004d64cf52132c032e74d7755ff80f4/obj/iPhone/Debug/mtouch-cache/Build/MyCompany.Mobile.Scanner.Ingenico.dll
8>  Code: 6656(64%) Info: 60(0%) Ex Info: 2172(21%) Unwind Info: 489(4%) Class Info: 234(2%) PLT: 22(0%) GOT Info: 543(5%) Offsets: 179(1%) GOT: 244
8>  Compiled: 17/17 (100%), No GOT slots: 0 (0%), Direct calls: 0 (0%)
8>  Output file: '/Users/user/Library/Caches/Xamarin/mtbs/builds/MyCompanyMyApp/9004d64cf52132c032e74d7755ff80f4/obj/iPhone/Debug/mtouch-cache/MyCompany.Mobile.Scanner.Ingenico.dll.armv7.s'.
8>  Linking symbol: '_mono_aot_module_MyCompany_Mobile_Scanner_Ingenico_info'.
8>  JIT time: 2 ms, Generation time: 2 ms, Assembly+Link time: 0 ms.
8>  AOT Compilation exited with code 134, command:
8>  MONO_PATH=/Users/user/Library/Caches/Xamarin/mtbs/builds/MyCompanyMyApp/9004d64cf52132c032e74d7755ff80f4/obj/iPhone/Debug/mtouch-cache/Build /Library/Frameworks/Xamarin.iOS.framework/Versions/9.8.1.4/bin/arm-darwin-mono-sgen --debug -O=gsharedvt  --aot=mtriple=armv7-ios,data-outfile=/Users/user/Library/Caches/Xamarin/mtbs/builds/MyCompanyMyApp/9004d64cf52132c032e74d7755ff80f4/obj/iPhone/Debug/mtouch-cache/MyCompany.IngenicoBinding.armv7.aotdata,static,asmonly,direct-icalls,full,soft-debug,dwarfdebug,no-direct-calls,outfile=/Users/user/Library/Caches/Xamarin/mtbs/builds/MyCompanyMyApp/9004d64cf52132c032e74d7755ff80f4/obj/iPhone/Debug/mtouch-cache/MyCompany.IngenicoBinding.dll.armv7.s "/Users/user/Library/Caches/Xamarin/mtbs/builds/MyCompanyMyApp/9004d64cf52132c032e74d7755ff80f4/obj/iPhone/Debug/mtouch-cache/Build/MyCompany.IngenicoBinding.dll"
8>  Mono Ahead of Time compiler - compiling assembly /Users/user/Library/Caches/Xamarin/mtbs/builds/MyCompanyMyApp/9004d64cf52132c032e74d7755ff80f4/obj/iPhone/Debug/mtouch-cache/Build/MyCompany.IngenicoBinding.dll
8>  Structure field of type SByte[] can't be marshalled as LPArray
8>  Mono Ahead of Time compiler - compiling assembly /Users/user/Library/Caches/Xamarin/mtbs/builds/MyCompanyMyApp/9004d64cf52132c032e74d7755ff80f4/obj/iPhone/Debug/mtouch-cache/Build/System.Xml.dll
8>  Code: 2006348(66%) Info: 49971(1%) Ex Info: 690337(22%) Unwind Info: 109834(3%) Class Info: 35208(1%) PLT: 5371(0%) GOT Info: 85523(2%) Offsets: 32316(1%) GOT: 36536
8>  Compiled: 7444/7444 (100%), No GOT slots: 4655 (62%), Direct calls: 734 (7%)
8>  Output file: '/Users/user/Library/Caches/Xamarin/mtbs/builds/MyCompanyMyApp/9004d64cf52132c032e74d7755ff80f4/obj/iPhone/Debug/mtouch-cache/System.Xml.dll.armv7.s'.
8>  Linking symbol: '_mono_aot_module_System_Xml_info'.
8>  JIT time: 1004 ms, Generation time: 2190 ms, Assembly+Link time: 17 ms.
8>C:\Program Files (x86)\MSBuild\Xamarin\iOS\Xamarin.iOS.Common.targets(681,3): error : Could not AOT the assembly '/Users/user/Library/Caches/Xamarin/mtbs/builds/MyCompanyMyApp/9004d64cf52132c032e74d7755ff80f4/obj/iPhone/Debug/mtouch-cache/Build/MyCompany.IngenicoBinding.dll'
8>    at Xamarin.Bundler.AOTTask.Build () <0x111e89920 + 0x003be> in <filename unknown>:0 
8>    at Xamarin.Bundler.BuildTask.Execute () <0x111e89310 + 0x00010> in <filename unknown>:0 
8>    at Xamarin.Bundler.Target+<Compile>c__AnonStorey0.<>m__0 (Xamarin.Bundler.BuildTask v) <0x111e89030 + 0x00028> in <filename unknown>:0 
8>    at System.Threading.Tasks.Parallel+<ForEachWorker>c__AnonStorey6`2[TSource,TLocal].<>m__0 (Int32 i) <0x111e88ba0 + 0x00062> in <filename unknown>:0 
8>    at System.Threading.Tasks.Parallel+<ForWorker>c__AnonStorey3`1[TLocal].<>m__1 () <0x111e873f0 + 0x003d2> in <filename unknown>:0 
========== Rebuild All: 4 succeeded, 1 failed, 3 skipped ==========

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Visual Studio extension to enable development for Xamarin.iOS.

Xamarin Studio 信息

=== Xamarin Studio Community ===

Version 6.0.1 (build 9)
Installation UUID: ff72e804-2e29-4006-bfd0-7b3f4ea0aa24
Runtime:
    Mono 4.4.1 (mono-4.4.0-branch-c7sr0/4747417) (64-bit)
    GTK+ 2.24.23 (Raleigh theme)

    Package version: 404010000

=== Xamarin.Profiler ===

Not Installed

=== Xamarin.Android ===

Not Installed

=== Xamarin Android Player ===

Not Installed

=== Apple Developer Tools ===

Xcode 7.3.1 (10188.1)
Build 7D1014

=== Xamarin.Mac ===

Not Installed

=== Xamarin.iOS ===

Version: 9.8.1.4 (Xamarin Studio Community)
Hash: 3cf8aae
Branch: c7sr0
Build date: 2016-06-20 16:09:58-0400

=== Build Information ===

Release ID: 600010009
Git revision: e879ce52093257c5c386ad7e390dfaa937fa7f90
Build date: 2016-06-24 11:53:43-04
Xamarin addins: a9252e6df4851fbbed1f9c6228e7b6dd1b475ac5
Build lane: monodevelop-lion-cycle7-sr0

=== Operating System ===

Mac OS X 10.11.3
Darwin Users-Mac-4.local 15.3.0 Darwin Kernel Version 15.3.0
    Thu Dec 10 18:40:58 PST 2015
    root:xnu-3248.30.4~1/RELEASE_X86_64 x86_64

Answer 1

构建日志是这样写的：

SByte[] 类型的结构字段不能编组为 LPArray

有问题的程序集具有一个带有 SByte[] 字段且没有 [MarshalAs] 属性的结构（这意味着它将被封送为 LPArray，这是默认设置）。

AOT 编译器不支持这种情况，因此 AOT 编译失败。

这必须由库供应商解决。