wasm can't run on ios < 16.2

[halx99]

• axmol version:
• devices test on: ios 15
• developing environments
  • NDK version: r23c
  • Xcode version: 14.2+
  • Visual Studio:
    • VS version: 2022 (17.9+)
    • MSVC version: 19.39+
    • Windows SDK version: 10.0.22621.0+
  • cmake version:
    Steps to Reproduce:

1. open https://axmol.netlify.app/wasm/cpp-tests/cpp-tests by safari
2. debug by macOS safari, will report out of memory exception

No idea currently, can't solve when try to reduce init memory to any size

[danialias]

If it helps, @paulocoutinhox games here https://paulocoutinho.itch.io/gamemania are made with an older version of Axmol and they work on iOS 15.8. Something that changed in Axmol from that version to the newer might be the reason?

If @paulocoutinhox is around, which Axmol version did you use for GameMania?

[paulocoutinhox]

Hi,

Mine is using a version from "Mar 12, 2025", i don't know what version exactly it is using, because im always use "master" version.

[halx99]

maybe it's this revision: 9d88efa

[paulocoutinhox]

Some recent changes for WASM:

• f527eb8
• 5d85162
• f04aabf
• 3eca85a
• 038047e
• 8d64b2f
• b5a84f1

[AlexandreK38]

@halx99 do you use the emscripten v3 or v4? You changed the version not long time ago, that could be a clue

[halx99]

@halx99 do you use the emscripten v3 or v4? You changed the version not long time ago, that could be a clue

I have test both emsdk 3.x and 4.x, not work

[paulocoutinhox]

Hi,

I have updated to latest version of axmol 2.x:
https://paulocoutinho.itch.io/gamemania

[AlexandreK38]

Not working on my iPhone with iOS 16.0.3

[halx99]

On the latest axmol dev branch, the following build command produces a WASM binary that runs on older iPhone devices,
such as iPhone 7 with iOS 15.8.4:

axmol -p wasm -xc '-DAX_WASM_THREADS=0,-DAX_WASM_ISA_SIMD=none'

Key points:

• Disable multithreading support
• Disable WebAssembly SIMD instructions

[AlexandreK38]

@halx99 can we set AX_WASM_ISA_SIMD=none in the CMakeList?

What are SIMD used for?

[halx99]

@halx99 can we set AX_WASM_ISA_SIMD=none in the CMakeList?

What are SIMD used for?

No, the options should for older device