When things go wrong

build error

intellisense error

case

You must include <typeinfo> before using typeid

Countermeasure

These errors can be ignored as long as the build using emcc succeeds.

UnicodeDecodeError

case

UnicodeDecodeError: 'cp932' codec can't decode byte 0x83 in position 99080

対処策

• Set environment variable PYTHONUTF8=1

Set environment variables

1. Open "Windows Settings" and enter "environment variables" in the search field. Click on the search result for "Edit Environment Variables".

![envvar0](/assets/img/building/trouble-shooting/envvar0.png)

1. A window titled "Environment Variables" will appear. Click "New (_N_)...".

![envvar1](/assets/img/building/trouble-shooting/envvar1.png)

1. A window titled "Edit user environment variables" will be displayed. Enter "PYTHONUTF8" (single-byte alphabetic characters, lowercase letters are not allowed) for the variable name and "1" (single-byte number) for the variable value.

![envvar2](/assets/img/building/trouble-shooting/envvar2.png)

Build error with Emscripten ports

case

cache:INFO: generating port: libz.a... (this will be cached in "C:\...\cache\sysroot\lib\wasm32-emscripten\libz.a" for subsequent builds)
shared : error : C:\...\cache\wasm\ports-builds\zlib\adler32.c: No such file or directory ("C:\...\cache\wasm\ports-builds\zlib\adler32.c" was expected to be an input file, based on the commandline arguments provided)
shared : error : C:\...\cache\wasm\ports-builds\zlib\compress.c.c: No such file or directory ("C:\...\cache\wasm\ports-builds\zlib\compress.c.c" was expected to be an input file, based on the commandline arguments provided)
shared : error : C:\...\cache\wasm\ports-builds\zlib\deflate.c: No such file or directory ("C:\...\cache\wasm\ports-builds\zlib\deflate.c" was expected to be an input file, based on the commandline arguments provided)
...
system_libs : error : a problem occurred when using an emscripten-ports library.  try to run `emcc --clear-ports` and then run this command again

対処策

• Open the folder %EMSDK%/upstream/emscripten/cache/ports in Explorer and expand zlib.zip on the spot.

  

  Extract Zip File

    1. Right-click the zip file and click **Extract All...**.
  
  ![ExtractZip](/assets/img/building/trouble-shooting/unzip-all.png)
  
  1. A window titled Extract Compressed (ZIP Format) Folder will appear, click **Extract**.
  
  ![ExtractZip](/assets/img/building/trouble-shooting/unzip-all2.png)
  

• Add the folder %EMSDK%/upstream/emscripten/cache to your antivirus software's scan exclusion folders.

Build error when generating .tlog

症例

FileTracker : error FTK1011: Could not create new file tracking log file: C:\..\..\(some file).tlog. I have a file.

Countermeasure

• Build the project again.
  • This phenomenon always occurs on the first build.

I get the warning Asyncify Addlist Contained a Non-matching Pattern

症例

EMSCRIPTENLINK : warning : Asyncify addlist contained a non-matching pattern: s3d::Clipboard::GetText(\*) (s3d::Clipboard::GetText\28\*\29)

Countermeasure

• This warning is intentional.

runtime error

Gamepad State is null

症例

Uncaught TypeError: GLFW.lastGamepadState is null

対処策

• Serve WebGL apps over a secure context (https://).

A message box of -1 is displayed

症例

-1

対処策

• Please enable debug build
  • Error messages are optimized away in release builds.