emscripten-core

emscripten-core/emscripten

Emscripten: An LLVM-to-WebAssembly Compiler

Stars: 27.6k
Forks: 3.6k
Open beginner issues: 0
Indexed issues: 2k
Avg merge: 1d 16h
Merged PRs (30d): 117

Dominant language: C++
License: No license data
Last GitHub push: Sep 15, 2026
Latest indexed: Sep 15, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: help wanted

Open All

2037 open issues indexed

WasmFS: A file can be created in a read-only directory Open

wasmfs

emscripten-core/emscripten#18033 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
dynCalls in Asyncify Add List are ignored when building with Legacy Exception Handling + Main Module Open

emscripten-core/emscripten#18045 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Invalid cache assertion building freetype port Open

emscripten-core/emscripten#18046 · 10 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
wasm-ld: error: cannot open __llvm_runtime_variable: No such file or directory Open

emscripten-core/emscripten#18064 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
RFE: _name_ the function created by -sMODULARIZE Open

emscripten-core/emscripten#18071 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
emscripten objects/modules deletion/unloading Open

emscripten-core/emscripten#18080 · 7 comments · 1 reaction · 0 assignees · Indexed Sep 15, 2026
Writing to `std::cout` disables wasm workers stdout Open

emscripten-core/emscripten#18081 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
pthread + simd + fexceptions generates SIMD opcodes incompatible with Node.js in emsdk Open

emscripten-core/emscripten#18084 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
library_glfw.js: GLFW_RELEASE not sent for keys after cmd/meta/menu key is pressed on mac Open

emscripten-core/emscripten#18089 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
how about a console session Open

emscripten-core/emscripten#18091 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
how about easier string handling Open

emscripten-core/emscripten#18092 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
When I call glTexImage2D upload texture what will happen internal ? Does the texture need copy from wasm memory to js memory? Open

emscripten-core/emscripten#18109 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
WasmFS: Current directory ignores custom backend Open

wasmfs

emscripten-core/emscripten#18112 · 9 comments · 7 reactions · 0 assignees · Indexed Sep 15, 2026
[Question] Using Scons to compile with Emscripten Open

emscripten-core/emscripten#18114 · 15 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
trace.h dead? Open

emscripten-core/emscripten#18121 · 15 comments · 2 reactions · 0 assignees · Indexed Sep 15, 2026
The fastest link time Open

emscripten-core/emscripten#18129 · 13 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Compile harfbuzz to wasm error ? Open

emscripten-core/emscripten#18136 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Is it possible to perform gl calls according to context created on each pthread? Open

emscripten-core/emscripten#18132 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Missing sys/prctl.h Open

emscripten-core/emscripten#18141 · 16 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
EmscriptenKeyboardEvent Open

emscripten-core/emscripten#18143 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Emscripten undefined symbol error and more Open

emscripten-core/emscripten#18144 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Update boost port, and add some more testing Open

emscripten-core/emscripten#18147 · 2 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
Clean after linking: file is being used by another process Open

emscripten-core/emscripten#18150 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Offscreen canvas rendering in proxy thread via ProxyingQueue Open

emscripten-core/emscripten#18164 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
WasmFS: Can't create a file when using fetch + icase backends Open

wasmfs

emscripten-core/emscripten#18168 · 1 comment · 0 reactions · 1 assignee · Indexed Sep 15, 2026
test_stack_overflow fails with `Bus Error` under node on macOS Open

emscripten-core/emscripten#18175 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Run all ASYNCIFY tests in JSPI mode Open

emscripten-core/emscripten#18180 · 8 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
How to integrate project with Node.js applications? Open

emscripten-core/emscripten#18192 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Emscripten pre-enabling vbo 0 and 1. Open

emscripten-core/emscripten#18193 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Cannot use ALLOW_MEMORY_GROWTH when execute the standalone wasm. Open

emscripten-core/emscripten#18197 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
wasm built with SIDE_MODULE allows undefined symbols Open

dynamic_linking

emscripten-core/emscripten#18198 · 2 comments · 0 reactions · 1 assignee · Indexed Sep 15, 2026
In MEMORY64 mode, function pointers are 64-bit, but would be better to be 32-bit Open

emscripten-core/emscripten#18200 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
using with opencv 4.5 give compile error like "undefined symbol: __cxa_can_catch (referenced by __cxa_find_matching_catch_2__deps: ['$exceptionLast','$ExceptionInfo','__resumeException','__cxa_can_catch'], referenced by top-level compiled C/C++ code)" Open

emscripten-core/emscripten#18202 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Missing `[compile]` and `[link]` annotations in some settings Open

emscripten-core/emscripten#18203 · 6 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Generate PowerShell wrappers for emcc & co. Open

emscripten-core/emscripten#18213 · 16 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Why does GLFW in Emscripten create a white border around the HTML5 Canvas window on keyboard input? Open

emscripten-core/emscripten#18232 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
RFE: ability to elide the automatic "export default ..." for ES6 module builds Open

JavaScript

emscripten-core/emscripten#18237 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
cmake: CheckTypeSize does not work correctly for types > 255? Open

emscripten-core/emscripten#18238 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
ASSERTIONS mode should tell the user when trying to use pthreads w/o -pthread Open

emscripten-core/emscripten#18240 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Opening files packaged with `--preload-file` fails in wasm workers Open

emscripten-core/emscripten#18241 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Uncaught TypeError: Cannot read properties of undefined (reading 'posix') Open

emscripten-core/emscripten#18242 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
{{{ GLOBAL_BASE }}} is incorrect when building with STACK_FIRST enabled Open

emscripten-core/emscripten#18243 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Porting Boehm to Emscripten Open

emscripten-core/emscripten#18251 · 15 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Cannot instantiate module using value_object with ASYNCIFY and DISABLE_EXCEPTION_CATCHING=0 enabled. Open

emscripten-core/emscripten#18254 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
emscripten doesn't find/use locally installed Java Open

emscripten-core/emscripten#18275 · 3 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Fullscreen doesn't work on chrome and safari on the Mac Open

emscripten-core/emscripten#18288 · 1 comment · 0 reactions · 0 assignees · Indexed Sep 15, 2026
How I can upload an external file given by user into the IDBFS? Open

emscripten-core/emscripten#18306 · 2 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
Test runner feature request: capture stderr Open

emscripten-core/emscripten#18308 · 4 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
`EXCEPTION_CATCHING_ALLOWED=xxx` can have smaller code size than `EXCEPTION_CATCHING_ALLOWED=` Open

emscripten-core/emscripten#18312 · 0 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026
How to share memory between two modules? Open

emscripten-core/emscripten#18356 · 7 comments · 0 reactions · 0 assignees · Indexed Sep 15, 2026

A short digest of beginner-friendly GitHub issues.