Unity2WebGL构建日志之il2cpp

错误

完整的il2cpp.exe报错:

Exception: D:\Program Files\Unity\2019.4.17f1c1\Editor\Data\il2cpp/build/deploy/net471/il2cpp.exe did not run properly!
Failed running "D:\Program Files\Unity\2019.4.17f1c1\Editor\Data\il2cpp/build/deploy/net471/il2cpp.exe" --convert-to-cpp --dotnetprofile="unityaot" --compile-cpp --libil2cpp-static --platform="WebGL" --architecture="EmscriptenJavaScript" --configuration="Release" --outputpath="G:\计算机图形学\Ocean\BuildTest\UnderWaterSystem\Assets /../Temp/StagingArea/Data\Native\build.bc" --cachedirectory="G:\计算机图形学\Ocean\BuildTest\UnderWaterSystem\Assets\..\Library/il2cpp_cache" --compiler-flags="-Oz -DIL2CPP_EXCEPTION_DISABLED=1 " --emit-method-map --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_AccessibilityModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_AIModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_AndroidJNIModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_AnimationModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_AssetBundleModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_AudioModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_ClothModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_CoreModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_CrashReportingModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_DirectorModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_DSPGraphModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_GameCenterModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_GridModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_HotReloadModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_ImageConversionModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_IMGUIModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_InputLegacyModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_InputModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_JSONSerializeModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_LocalizationModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_ParticleSystemModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_PerformanceReportingModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_Physics2DModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_PhysicsModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_ProfilerModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_ScreenCaptureModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_SharedInternalsModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_SpriteMaskModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_SpriteShapeModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_StreamingModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_SubstanceModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_SubsystemsModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_TerrainModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_TerrainPhysicsModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_TextCoreModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_TextRenderingModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_TilemapModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_TLSModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_UIElementsModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_UIModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_UmbraModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_UNETModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_UnityAnalyticsModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_UnityConnectModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_UnityTestProtocolModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_UnityWebRequestAssetBundleModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_UnityWebRequestAudioModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_UnityWebRequestModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_UnityWebRequestTextureModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_UnityWebRequestWWWModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_VehiclesModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_VFXModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_VideoModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_VRModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_WebGLModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_WindModule_Dynamic.bc" --additional-libraries="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/PlaybackEngines/WebGLSupport\BuildTools\lib\modules\WebGLSupport_XRModule_Dynamic.bc" --profiler-report --map-file-parser="D:/Program Files/Unity/2019.4.17f1c1/Editor/Data/Tools/MapFileParser/MapFileParser.exe" --directory="G:/计算机图形学/Ocean/BuildTest/UnderWaterSystem/Temp/StagingArea/Data/Managed" --generatedcppdir="G:/计算机图形学/Ocean/BuildTest/UnderWaterSystem/Temp/StagingArea/Data/il2cppOutput"  

stdout:
Building build.bc with EmscriptenToolChain
	Output directory: G:\�����ͼ��ѧ\Ocean\BuildTest\UnderWaterSystem\Temp\StagingArea\Data\Native
	Cache directory: G:\�����ͼ��ѧ\Ocean\BuildTest\UnderWaterSystem\Library\il2cpp_cache
ObjectFiles: 157 of which compiled: 0
Total compilation time: 101 milliseconds.
Response file: D:\Temp\_1842515173\response.rsp
Response file: D:\Temp\_1947989028\response.rsp
il2cpp.exe didn't catch exception: Unity.IL2CPP.Building.BuilderFailedException: "D:\Program Files\Unity\2019.4.17f1c1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\Emscripten_Win\python\2.7.5.3_64bit\python.exe" -E "D:\Program Files\Unity\2019.4.17f1c1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\Emscripten\emcc" -o "G:\�����ͼ��ѧ\Ocean\BuildTest\UnderWaterSystem\Library\il2cpp_cache\linkresult_6419C51A308275CB21C0D680D9EAABAD\build.bc" -s TOTAL_MEMORY=384MB -s DISABLE_EXCEPTION_CATCHING=0 -s WASM=0 -O3 "D:\Program Files\Unity\2019.4.17f1c1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_AccessibilityModule_Dynamic.bc" "D:\Program Files\Unity\2019.4.17f1c1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_AIModule_Dynamic.bc" "D:\Program Files\Unity\2019.4.17f1c1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_AndroidJNIModule_Dynamic.bc" "D:\Program Files\Unity\2019.4.17f1c1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_AnimationModule_Dynamic.bc" "D:\Program Files\Unity\2019.4.17f1c1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_AssetBundleModule_Dynamic.bc" "D:\Program Files\Unity\2019.4.17f1c1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_AudioModule_Dynamic.bc" "D:\Program Files\Unity\2019.4.17f1c1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_ClothModule_Dynamic.bc" "D:\Program Files\Unity\2019.4.17f1c1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_CoreModule_Dynamic.bc" "D:\Program Files\Unity\2019.4.17f1c1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_CrashReportingModule_Dynamic.bc" "D:\Program Files\Unity\2019.4.17f1c1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_DirectorModule_Dynamic.bc" "D:\Program Files\Unity\2019.4.17f1c1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_DSPGraphModule_Dynamic.bc" "D:\Program Files\Unity\2019.4.17f1c1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_GameCenterModule_Dynamic.bc" "D:\Program Files\Unity\2019.4.17f1c1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_GridModule_Dynamic.bc" "D:\Program Files\Unity\2019.4.17f1c1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_HotReloadModule_Dynamic.bc" "D:\Program Files\Unity\2019.4.17f1c1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_ImageConversionModule_Dynamic.bc" "D:\Program Files\Unity\2019.4.17f1c1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_IMGUIModule_Dynamic.bc" "D:\Program Files\Unity\2019.4.17f1c1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_InputLegacyModule_Dynamic.bc" "D:\Program Files\Unity\2019.4.17f1c1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_InputModule_Dynamic.bc" "D:\Program Files\Unity\2019.4.17f1c1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_JSONSerializeModule_Dynamic.bc" "D:\Program Files\Unity\2019.4.17f1c1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_LocalizationModule_Dynamic.bc" "D:\Program Files\Unity\2019.4.17f1c1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_ParticleSystemModule_Dynamic.bc" "D:\Program Files\Unity\2019.4.17f1c1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_PerformanceReportingModule_Dynamic.bc" "D:\Program Files\Unity\2019.4.17f1c1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_Physics2DModule_Dynamic.bc" "D:\Program Files\Unity\2019.4.17f1c1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_PhysicsModule_Dynamic.bc" "D:\Program Files\Unity\2019.4.17f1c1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_ProfilerModule_Dynamic.bc" "D:\Program Files\Unity\2019.4.17f1c1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_ScreenCaptureModule_Dynamic.bc" "D:\Program Files\Unity\2019.4.17f1c1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_SharedInternalsModule_Dynamic.bc" "D:\Program Files\Unity\2019.4.17f1c1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_SpriteMaskModule_Dynamic.bc" "D:\Program Files\Unity\2019.4.17f1c1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_SpriteShapeModule_Dynamic.bc" "D:\Program Files\Unity\2019.4.17f1c1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_StreamingModule_Dynamic.bc" "D:\Program Files\Unity\2019.4.17f1c1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_SubstanceModule_Dynamic.bc" "D:\Program Files\Unity\2019.4.17f1c1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_SubsystemsModule_Dynamic.bc" "D:\Program Files\Unity\2019.4.17f1c1\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\lib\modules\WebGLSupport_TerrainModule_Dynamic.bc" "D:\Program Files\Unity\2019.4.17f1c1\Editor\Data\Playback<message truncated>

解决过程

分析上面问题。有个il2cpp.exe没跑对，它应该是最严重的问题，可能是它引发下面两个问题

看看论坛朋友们咋说

方法1：消除il2cpp缓存

下图这种消灭缓存的方法也试过了，不过一般针对unity突然抽风且代码无跨平台或其他问题的项目，不是本次的解决方法，第二个方法感觉也是拼运气的，和代码自身无关了（比较怀疑是项目里某些代码问题）

链接

方法2：清除无用包或路径重定向成功

链接

如果按这位老哥说的，那我项目里唯一引入的外部包就是后处理，没它游戏运行不了，同时用重定向路径方法解决问题有可能，因为我的项目路径的确有中文（大意了...）

更换目录后仍然构建成功

可以看出不管是项目源文件还是构建后文件都不能有特殊字符（比如中文）

不过项目虽然成功构建到WebGL可喜可贺，但是大部分效果都丢了，UI上的字符也没了（怀疑是UI也是中文字符，无法解析），所以这次的结论是构建WebGL路径一定不能有中文，同时即使成功构建，很多效果会出现缺失甚至错误的情况（由于涉及到跨平台，很多规则不一样），后续会尝试解决一些错误，写一些新的踩坑文章。

IL2CPP

不过这次也引发对IL2CPP的好奇，它究竟在Unity转换到WebGL有什么作用

IL2CPP - Unity 手册 (unity3d.com)

从上面官方的解释看它是一种由 Unity 开发的脚本后端，可在为各种平台构建项目时替代 Mono。使用 IL2CPP 构建项目时，Unity 会在为所选平台创建本机二进制文件（例如 .exe、apk、.xap）之前将脚本和程序集内的 IL 代码转换为 C++。IL2CPP 的一些用途包括提高 Unity 项目的性能、安全性和平台兼容性。

Unity将来时：IL2CPP是什么？ - 知乎 (zhihu.com) 2015

网上查到国内外介绍IL2CPP基本是2015年，看起来IL2CPP年代不小了，其也是为跨平台诞生的，和Mono是同级别概念，大概逻辑如下图【看博客原文去了解历史原因吧】，“C++是一门静态语言，这就意味着我们不能使用动态语言的那些酷炫特性。运行时生成代码并执行肯定是不可能了。这就是Unity里面提到的所谓AOT（Ahead Of Time）编译而非JIT（Just In Time）编译。"博文里的这句话也可能就是本次构建错误的原因。

Mono