emscripten-core/emscripten

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Emscripten: An LLVM-to-WebAssembly Compiler

Stars: 27.6k
Forks: 3.6k
Open beginner issues: 0
Indexed issues: 2k
Avg merge: 1d 14h
Merged PRs (30d): 125

Dominant language: C++
License: No license data
Last GitHub push: Sep 18, 2026
Latest indexed: Sep 15, 2026
Contributing guide: Contributing guide
Code of conduct: No code of conduct
Beginner labels: help wanted

Beginner friendly Everything

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2,037 open issues indexed

windows support... Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

emscripten-core/emscripten#14253 · 1 comment · Opened May 21, 2021
install without needing python Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

emscripten-core/emscripten#14252 · 4 comments · Opened May 21, 2021
Enforce DWARF v5 Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

emscripten-core/emscripten#14241 · 9 comments · Opened May 20, 2021
The browser crash and Render process gone Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

emscripten-core/emscripten#14237 · 1 comment · Opened May 20, 2021
Emscripten and Unreal Engine 4 Socket Issue Open

Difficulty 4/5 3-5 days Newbie friendliness 20/100

emscripten-core/emscripten#14208 · Opened May 17, 2021
Removal of C++ name mangling is not correctly applied Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

emscripten-core/emscripten#14205 · 12 comments · Opened May 17, 2021
Unsupported linker flags Open

Difficulty 4/5 3-5 days Newbie friendliness 42/100

emscripten-core/emscripten#14204 · 10 comments · Opened May 17, 2021
How use fwrite in Wasm Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

emscripten-core/emscripten#14203 · 1 comment · Opened May 17, 2021
Searching `window.URL` in Web worker context Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

emscripten-core/emscripten#14201 · Opened May 16, 2021
Large link time regression compared to fastcomp Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

emscripten-core/emscripten#14200 · 14 comments · Opened May 16, 2021
test_emsize fails on windows on github CI but not on emscripten-releases CI Open

Difficulty 4/5 3-5 days Newbie friendliness 32/100

emscripten-core/emscripten#14183 · 4 comments · Opened May 14, 2021
EXPORT_ES6 + proxy-to-worker produces broken code Open

good first bug help wanted

Difficulty 3/5 1-2 days Newbie friendliness 35/100

emscripten-core/emscripten#14164 · Opened May 12, 2021
`emsdk install 2.0.20-lto` does not work Open

Difficulty 2/5 1-3 hours Newbie friendliness 38/100

emscripten-core/emscripten#14156 · 8 comments · Opened May 11, 2021
`-s EXPORT_NAME=...` + pthreads breaks in Node.js Open

Difficulty 3/5 1-2 days Newbie friendliness 42/100

emscripten-core/emscripten#14140 · Opened May 10, 2021
PHPFS feature suggestion Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

emscripten-core/emscripten#14136 · Opened May 10, 2021
LinkError: WebAssembly.instantiate(): Import #310 module="env" function="segfault" error: function import requires a callable Open

Difficulty 4/5 3-5 days Newbie friendliness 22/100

emscripten-core/emscripten#14131 · 2 comments · Opened May 10, 2021
Problem compiling the test_fs_lz4fs_package tests with Closure Open

good first bug help wanted

Difficulty 4/5 3-5 days Newbie friendliness 30/100

emscripten-core/emscripten#14129 · Opened May 9, 2021
emrun exception thrown: NetworkError: Failed to execute 'send' on XMLHttpRequest stdio.html Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

emscripten-core/emscripten#14128 · 6 comments · 7 reactions · Opened May 8, 2021
TLS symbols cannot currently be exported in dynamic linking Open

emscripten-core/emscripten#14120 · 1 assignee · Opened May 7, 2021
asan.test_pthread_thread_local_storage failure on emscripten-releases waterfall Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

emscripten-core/emscripten#14111 · 1 comment · Opened May 6, 2021
Findings from wrapping a WebAssembly module as a Web Component Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

emscripten-core/emscripten#14107 · 1 comment · 4 reactions · Opened May 6, 2021
Main thread hangs even with PTHREAD_POOL_SIZE Open

Difficulty 3/5 1-2 days Newbie friendliness 30/100

emscripten-core/emscripten#14097 · 5 comments · Opened May 5, 2021
[Feature] : file-system-access - get file handle in a pthread Open

Difficulty 5/5 Over a week Newbie friendliness 25/100

emscripten-core/emscripten#14094 · 3 comments · Opened May 5, 2021
openCV wasm build framerate half that of openCV.js issue Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

emscripten-core/emscripten#14072 · 1 comment · Opened May 1, 2021
WebIDL, callback, function pointer Open

Difficulty 3/5 1-2 days Newbie friendliness 25/100

emscripten-core/emscripten#14070 · 3 comments · Opened May 1, 2021
Pressing with 2 fingers on an Emscripten web page causes an assertion failure on some tablets Open

Difficulty 4/5 3-5 days Newbie friendliness 32/100

emscripten-core/emscripten#14064 · 2 comments · 1 reaction · Opened Apr 30, 2021
Different -Wpoison-system-directories behavior between macOS x86_64 and macOS arm64 Open

Difficulty 4/5 3-5 days Newbie friendliness 35/100

emscripten-core/emscripten#14031 · 22 comments · Opened Apr 27, 2021
emmake make command makes error when used for openCV Open

wontfix

Difficulty 4/5 3-5 days Newbie friendliness 25/100

emscripten-core/emscripten#14001 · 2 comments · Opened Apr 25, 2021
how to compile a cpp file that contains "#include "opencv2/opencv.hpp" into a wasm file? Open

wontfix

Difficulty 4/5 3-5 days Newbie friendliness 20/100

emscripten-core/emscripten#13994 · 1 comment · Opened Apr 24, 2021
`emscripten_sleep` causes error when used in `atexit` callback Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

emscripten-core/emscripten#13993 · 15 comments · Opened Apr 24, 2021
Definition of __m128i in compat/xmmintrin.h doesn't match Clang's emmintrin.h Open

Difficulty 3/5 1-2 days Newbie friendliness 35/100

emscripten-core/emscripten#13988 · 9 comments · Opened Apr 23, 2021
Use of emconfigure for wxWidgets Open

wontfix

Difficulty 4/5 3-5 days Newbie friendliness 25/100

emscripten-core/emscripten#13983 · 8 comments · Opened Apr 23, 2021
[question]What about it means when the return value is 0 Open

Difficulty 2/5 1-3 hours Newbie friendliness 35/100

emscripten-core/emscripten#13978 · 3 comments · 1 reaction · Opened Apr 23, 2021
Emscripten error with uninformative message while using tree-sitter Open

wontfix

Difficulty 4/5 3-5 days Newbie friendliness 30/100

emscripten-core/emscripten#13960 · 8 comments · Opened Apr 21, 2021
inconsistent results, export function not found. Open

wontfix

Difficulty 4/5 3-5 days Newbie friendliness 25/100

emscripten-core/emscripten#13955 · 1 comment · Opened Apr 21, 2021
alcCaptureSamples() loss data Open

wontfix

Difficulty 4/5 3-5 days Newbie friendliness 25/100

emscripten-core/emscripten#13953 · 1 comment · Opened Apr 21, 2021
Worker cannot terminate Correctly Open

wontfix

Difficulty 4/5 3-5 days Newbie friendliness 25/100

emscripten-core/emscripten#13950 · 2 comments · Opened Apr 21, 2021
Safari workaround breaks use of preinitialized GL contexts in library_webgl.js Open

wontfix

Difficulty 2/5 1-3 hours Newbie friendliness 45/100

emscripten-core/emscripten#13926 · 4 comments · Opened Apr 18, 2021
[question] [feature request] rmtree + makedirs(*, exist_ok=True) helper in standard library (FS, JavaScript) Open

good first bug help wanted

Difficulty 5/5 Over a week Newbie friendliness 25/100

emscripten-core/emscripten#13920 · 8 comments · Opened Apr 16, 2021
Huge performance regression in 2.0.17 Open

Difficulty 5/5 Over a week Newbie friendliness 20/100

emscripten-core/emscripten#13899 · 40 comments · Opened Apr 15, 2021
WebIDL Binder binder generates incorrect JS code when IDL_CHECKS="ALL" Open

wontfix

Difficulty 4/5 3-5 days Newbie friendliness 35/100

emscripten-core/emscripten#13897 · 1 comment · Opened Apr 14, 2021
em++: error: --preload-file and --embed-file cannot be used with NODERAWFS which disables virtual filesystem Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

emscripten-core/emscripten#13870 · 8 comments · Opened Apr 12, 2021
How to transform libjpeg into wasm Open

wontfix

Difficulty 5/5 Over a week Newbie friendliness 15/100

emscripten-core/emscripten#13867 · 2 comments · Opened Apr 12, 2021
cannot bind function Open

wontfix

Difficulty 4/5 3-5 days Newbie friendliness 20/100

emscripten-core/emscripten#13852 · 1 comment · Opened Apr 9, 2021
emscripten_const_asm_int broken in 2.0.16 when calling from rust Open

Difficulty 4/5 3-5 days Newbie friendliness 32/100

emscripten-core/emscripten#13838 · 26 comments · Opened Apr 7, 2021
Unhandled WebGL 2 extension (WEBGL_draw_instanced_base_vertex_base_instance) Open

wontfix

Difficulty 4/5 3-5 days Newbie friendliness 25/100

emscripten-core/emscripten#13811 · 1 comment · Opened Apr 4, 2021
Can't build "HTML5LaunchHelper.csproj" in Visual Studio 17 Open

Difficulty 3/5 1-2 days Newbie friendliness 25/100

emscripten-core/emscripten#13809 · 6 comments · Opened Apr 2, 2021
webgl(2): renderViaOffscreenBackBuffer fails because of glBindSampler left over state. Open

wontfix

Difficulty 4/5 3-5 days Newbie friendliness 25/100

emscripten-core/emscripten#13808 · 1 comment · Opened Apr 1, 2021
emcc warning emscipten a long time Open

wontfix

Difficulty 4/5 3-5 days Newbie friendliness 25/100

emscripten-core/emscripten#13802 · 10 comments · Opened Mar 31, 2021
How to check progress using Fetch API SYNC mode Open

wontfix

Difficulty 5/5 Over a week Newbie friendliness 20/100

emscripten-core/emscripten#13801 · 1 comment · Opened Mar 31, 2021

emscripten-core/emscripten

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