WebAssembly build error.

Target Platforms Web
1

WebGL Build (empty project) using Webassembly fails with following error if strip engine conde is off:

@“…\WebAssemblyTest\WebAssemblyTest\Assets..\Temp\emcc_arguments.resp”

stdout:
stderr:WARNING:root:–separate-asm works best when compiling to HTML. otherwise, you must yourself load the ‘.asm.js’ file that is emitted separately, and must do so before loading the main ‘.js` file
warning: unresolved symbol: glGetInternalformativwarning: unresolved symbol: _ZN4FMOD13DSPConnection6setMixEfwarning: unresolved symbol: glUnmapBufferwarning: unresolved symbol: glMapBufferRangewarning: unresolved symbol: glFlushMappedBufferRangeTraceback (most recent call last):
File “C:\Program Files\Unity 5.6.0b7\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\Emscripten\emcc”, line 13, in
emcc.run()
File “C:\Program Files\Unity 5.6.0b7\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\Emscripten\emcc.py”, line 2029, in run
subprocess.check_call(cmd, stdout=open(wasm_text_target, ‘w’))
File “C:\Program Files\Unity 5.6.0b7\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\Emscripten_Win\python\2.7.5.3_64bit\lib\subprocess.py”, line 542, in check_call
raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command ‘[u’C:\Program Files\Unity 5.6.0b7\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\Emscripten_FastComp_Win\binaryen\bin\asm2wasm’, ‘…\Temp\StagingArea\Data\linkresult_wasm\build.asm.js’, ‘–total-memory=524288000’, ‘-O3’, ‘–mem-init=…\Temp\StagingArea\Data\linkresult_wasm\build.js.mem’, ‘–mem-base=1024’, ‘–wasm-only’]’ returned non-zero exit status -1073740791
UnityEditor.HostView:OnGUI()

Exception: Failed building WebGL Player.
UnityEditor.WebGL.ProgramUtils.StartProgramChecked (System.Diagnostics.ProcessStartInfo p) (at /Users/builduser/buildslave/unity/build/PlatformDependent/WebGL/Extensions/Unity.WebGL.extensions/ProgramUtils.cs:48)
UnityEditor.WebGL.WebGlBuildPostprocessor.EmscriptenLink (BuildPostProcessArgs args, Boolean wasmBuild, System.String sourceFiles, System.String sourceFilesHash) (at /Users/builduser/buildslave/unity/build/PlatformDependent/WebGL/Extensions/Unity.WebGL.extensions/BuildPostprocessor.cs:391)
UnityEditor.WebGL.WebGlBuildPostprocessor.LinkBuild (BuildPostProcessArgs args) (at /Users/builduser/buildslave/unity/build/PlatformDependent/WebGL/Extensions/Unity.WebGL.extensions/BuildPostprocessor.cs:440)
UnityEditor.WebGL.WebGlBuildPostprocessor.PostProcess (BuildPostProcessArgs args) (at /Users/builduser/buildslave/unity/build/PlatformDependent/WebGL/Extensions/Unity.WebGL.extensions/BuildPostprocessor.cs:870)
UnityEditor.PostprocessBuildPlayer.Postprocess (BuildTargetGroup targetGroup, BuildTarget target, System.String installPath, System.String companyName, System.String productName, Int32 width, Int32 height, System.String downloadWebplayerUrl, System.String manualDownloadWebplayerUrl, BuildOptions options, UnityEditor.RuntimeClassRegistry usedClassRegistry, UnityEditor.BuildReporting.BuildReport report) (at C:/buildslave/unity/build/Editor/Mono/BuildPipeline/PostprocessBuildPlayer.cs:186)
UnityEditor.HostView:OnGUI()

if strip engine code is enabled:

-Build is successful but runing on firefox-nightly with webassembly option enabled stops with error:
CompileError: wasm validation error: at offset 432: non-fallthrough instruction must be followed by end or else

with webassembly option disabled scene load, but i think it doest use webassemly, only asm.js

2

i have used unity version 5.6.0.b6 and 5.6.0.b7. Same problems.

3

Seems to be the same problem: WebAssembly Build Failing - Unity Engine - Unity Discussions

4

Yes, it is the same (Windows-specific) problem. We have a fix but it hasn’t landed to 5.6 yet.

1 Like
5

Update for 5.6.0b9:

strip engine conde is off (other error as before):

Failed running “C:\Program Files\Unity 5.6.0b9\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\Emscripten_Win\python\2.7.5.3_64bit\python.exe” “C:\Program Files\Unity 5.6.0b9\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\Emscripten\emcc” @“D:.…\Assets..\Temp\emcc_arguments.resp”

stdout:WARNING: sanity check failed to run [Errno 13] Permission denied: ‘C:\Program Files\Unity 5.6.0b9\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\emscripten.config_sanity’
stderr:WARNING:root:did not see a source tree above or next to the LLVM root directory (guessing based on directory of C:\Program Files\Unity 5.6.0b9\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\Emscripten_FastComp_Win\llc), could not verify version numbers match
INFO:root:(Emscripten: Running sanity checks)
WARNING:root:java does not seem to exist, required for closure compiler, which is optional (define JAVA in C:\Program Files\Unity 5.6.0b9\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\emscripten.config if you want it)
WARNING:root:closure compiler will not be available
WARNING:root:–separate-asm works best when compiling to HTML. otherwise, you must yourself load the ‘.asm.js’ file that is emitted separately, and must do so before loading the main ‘.js` file
warning: unresolved symbol: glGetInternalformativwarning: unresolved symbol: _ZN4FMOD13DSPConnection6setMixEfwarning: unresolved symbol: glUnmapBufferwarning: unresolved symbol: glMapBufferRangewarning: unresolved symbol: glFlushMappedBufferRangeTraceback (most recent call last):
File “C:\Program Files\Unity 5.6.0b9\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\Emscripten\emcc”, line 13, in
emcc.run()
File “C:\Program Files\Unity 5.6.0b9\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\Emscripten\emcc.py”, line 2029, in run
subprocess.check_call(cmd, stdout=open(wasm_text_target, ‘w’))
File “C:\Program Files\Unity 5.6.0b9\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\Emscripten_Win\python\2.7.5.3_64bit\lib\subprocess.py”, line 542, in check_call
raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command ‘[u’C:\Program Files\Unity 5.6.0b9\Editor\Data\PlaybackEngines\WebGLSupport\BuildTools\Emscripten_FastComp_Win\binaryen\bin\asm2wasm’, ‘D:\…\Temp\StagingArea\Data\linkresult_wasm\build.asm.js’, ‘–total-memory=268435456’, ‘-O3’, ‘–mem-init=D:\…\Temp\StagingArea\Data\linkresult_wasm\build.js.mem’, ‘–mem-base=1024’, ‘–wasm-only’]’ returned non-zero exit status -1073740791

build fails exactly if wasm build process going over 2k memory usage

strip engine code is enabled(other error):

Instead of: CompileError: wasm validation error: at offset 432: non-fallthrough instruction must be followed by end or else

fireforx nightly browser console:
Use of nsIFile in content process is deprecated. loader.js:278:6
Successfully compiled asm.js code (total compilation time 5ms; not stored in cache (too small to benefit)) UnityLoader.js
Successfully compiled asm.js code (total compilation time 4ms; not stored in cache (too small to benefit)) UnityLoader.js
IndexedDB UnknownErr: ActorsParent.cpp:596 (unbekannt)
failed to instantiate wasm module: LinkError: imported Memory with incompatible size UnityLoader.js:1
Memory size incompatibility issues may be due to changing TOTAL_MEMORY at runtime to something too large. Use ALLOW_MEMORY_GROWTH to allow any size memory (and also make sure not to set TOTAL_MEMORY at runtime to something smaller than it was at compile time). UnityLoader.js:1
IndexedDB is not available. Data will not persist in cache and PlayerPrefs will not be saved. c2574eeb-aa39-412d-b24a-7dc0a57a1a09:355
Invoking error handler due to
TypeError: __GLOBAL__sub_I_runtime_animation_lump_cpp is not a function

I dont change TOTAL_MEMORY at all. reducing TOTAL_MEMORY has no effect - same error.

6

Error alerted in browser:
An error occured running the Unity content on this page. See your browser JavaScript console for more info. The error was:
TypeError: __GLOBAL__sub_I_runtime_animation_lump_cpp is not a function