I have been trying to get some C++ code I wrote to be available in the browser using WebAssembly. Infact I had a previous question which I also posted here about a different problem with WASM. I got my code and WebAssembly-Module to work properly on Chrome/Firefox and basically any other browser except on Safari.
Problem description
When loading the website and looking into the console, I am greeted with an error regarding the WASM-module which claims a compile error occured like in the image below:
Furthermore any attempt to use the module does not work because the loaded module ends up being a null-object.
Web resources
I was trying to find a solution to my problem and found the following (possiblity related) websites:
- 1: Unity: Safari WebAssembly Unhandled Promise Rejection Error
- 2: WebKit Bugzilla: Unhandled Promise Rejection
- 3: Apple Developer Forums: SIMD on Safari?
which all claim that its either a safari bug and/or related to SIMD code which I will talk about at the end
WASM Compilation
I am thinking that maybe the way I compiled my code could be problematic. My command to build the wasm-module looks like this:
emcc
-O3
-std=c++20
-DNDEBUG
-flto
-s TOTAL_MEMORY=4294967296
-s ALLOW_MEMORY_GROWTH=1
-s INITIAL_MEMORY=33554432
-s PROXY_TO_PTHREAD
-s NO_EXIT_RUNTIME=1
-s "EXPORTED_RUNTIME_METHODS=['ccall']"
-msimd128
-s MODULARIZE=1
-s EXPORT_NAME=FFES
-s ENVIRONMENT=web,worker
--pre-js ./web_preamble.js
-s ASSERTIONS=1
-pthread -Wl,--whole-archive -lpthread -Wl,--no-whole-archive -o ./FFES_0.1.js
Note that, due to the 3rd link regarding SIMD in WASM on safari, I have removed all simd code from the program and removed the -msimd128 code without any luck. Removing simd does not solve my problem
I am interested if somebody else had a similar problem and knows if this is actually just a safari bug or what needs to be done to solve this problem. I am very happy for any help or advice.
