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

PURE_WASI option Open

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

emscripten-core/emscripten#12073 · 11 comments · 8 reactions · Opened Aug 28, 2020
test_fibers_asyncify fails without the binaryen generated dynCall functions. Open

emscripten-core/emscripten#12066 · 4 comments · 1 assignee · Opened Aug 27, 2020
Proper way to call asyncify_start_unwind and other Asyncify functions from C? Open

asyncify

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

emscripten-core/emscripten#12006 · 3 comments · Opened Aug 23, 2020
Duplicate symbol error emitted,when I use libiconv with -sMAIN_MODULE=1 (version:2.0.0) Open

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

emscripten-core/emscripten#11985 · 19 comments · Opened Aug 21, 2020
Does Emscripten Supports ccache on Linux Open

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

emscripten-core/emscripten#11974 · 25 comments · Opened Aug 20, 2020
Exception while running emscripten_wget_data method with ASYNCIFY under nodejs Open

asyncify

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

emscripten-core/emscripten#11894 · 7 comments · Opened Aug 13, 2020
Improve embind docs Open

embind help wanted

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

emscripten-core/emscripten#11878 · 2 comments · Opened Aug 12, 2020
configure/CMake + SIMD/pthreads Open

wontfix

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

emscripten-core/emscripten#11877 · 9 comments · Opened Aug 12, 2020
EM_JS doesn't insert semicolons Open

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

emscripten-core/emscripten#11793 · 4 comments · Opened Aug 3, 2020
SDL_PollEvent(&event) not capturing mouse events? Open

wontfix

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

emscripten-core/emscripten#11762 · 5 comments · Opened Jul 30, 2020
Cannot get Boost regex to work Open

wontfix

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

emscripten-core/emscripten#11754 · 4 comments · Opened Jul 29, 2020
Error using install under windows Open

wontfix

Difficulty 3/5 1-2 days Newbie friendliness 32/100

emscripten-core/emscripten#11741 · 19 comments · Opened Jul 28, 2020
Asyncify ignore & debug flag Open

asyncify

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

emscripten-core/emscripten#11736 · 4 comments · Opened Jul 28, 2020
EOF in Mac Open

wontfix

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

emscripten-core/emscripten#11720 · 4 comments · Opened Jul 25, 2020
Async-Await syntax on Asyncify causes "Unexpected token" Open

asyncify

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

emscripten-core/emscripten#11717 · 2 comments · Opened Jul 24, 2020
Standardize capitalization in docs Open

Difficulty 3/5 1-2 days Newbie friendliness 32/100

emscripten-core/emscripten#11699 · 5 comments · Opened Jul 22, 2020
docs: Improve Asyncify documentation about ignore-indirect & fiber.h Open

asyncify good first bug help wanted

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

emscripten-core/emscripten#11681 · 12 comments · Opened Jul 20, 2020
postRun hooks not run when exit runtime is enabled Open

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

emscripten-core/emscripten#11646 · 8 comments · Opened Jul 15, 2020
tests/websocket/tcp_echo_client.cpp not works Open

Difficulty 4/5 3-5 days Newbie friendliness 28/100

emscripten-core/emscripten#11627 · 2 comments · 1 reaction · Opened Jul 14, 2020
Repeated captureSamples calls register unexpected behavior Open

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

emscripten-core/emscripten#11616 · 2 comments · Opened Jul 10, 2020
"Unexpected arg0 type (select)" for EM_ASM call Open

wontfix

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

emscripten-core/emscripten#11539 · 10 comments · Opened Jul 4, 2020
Allow catching JavaScript exceptions from C++ Open

embind

Difficulty 5/5 Over a week Newbie friendliness 28/100

emscripten-core/emscripten#11496 · 23 comments · 3 reactions · Opened Jun 25, 2020
async fetch in wasm+threads Open

wontfix

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

emscripten-core/emscripten#11476 · 2 comments · Opened Jun 23, 2020
Integrate emrun with noInitialRun / INVOKE_RUN=0 Open

good first bug help wanted

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

emscripten-core/emscripten#11448 · 3 comments · Opened Jun 19, 2020
Embind doesn't accept string literals Open

embind

emscripten-core/emscripten#11444 · 6 comments · 1 assignee · Opened Jun 18, 2020
Allow propagating errors from Asyncified imports back to C++ Open

asyncify

Difficulty 5/5 Over a week Newbie friendliness 35/100

emscripten-core/emscripten#11434 · 3 comments · 1 reaction · Opened Jun 17, 2020
MAIN_MODULE and emscripten_fetch Open

help wanted

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

emscripten-core/emscripten#11407 · 5 comments · Opened Jun 12, 2020
Compiling with main_module override FETCH functions Open

good first bug help wanted

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

emscripten-core/emscripten#11390 · 3 comments · Opened Jun 10, 2020
I can hear small noises when I use alSourceQueueBuffers() of openal. Open

wontfix

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

emscripten-core/emscripten#11380 · 6 comments · 1 reaction · Opened Jun 9, 2020
Support llvm stable releases Open

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

emscripten-core/emscripten#11362 · 40 comments · 11 reactions · Opened Jun 5, 2020
implicit instantiation of undefined template Open

embind help wanted

Difficulty 4/5 3-5 days Newbie friendliness 28/100

emscripten-core/emscripten#11274 · 9 comments · 1 reaction · Opened May 28, 2020
Add Visual Studio IDE integration and Intellisense awareness Open

help wanted

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

emscripten-core/emscripten#11163 · 10 comments · Opened May 14, 2020
add uploader demo to tests Open

help wanted

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

emscripten-core/emscripten#11128 · 12 comments · Opened May 11, 2020
`-Wignored-qualifiers` produces an incorrect warning about `const` return type qualifier Open

pinned

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

emscripten-core/emscripten#11123 · 8 comments · Opened May 10, 2020
SDL_RenderPresent clears the buffer when called in different iterations of the loop using SDL_RENDERER_ACCELERATED Open

wontfix

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

emscripten-core/emscripten#11111 · 2 comments · Opened May 8, 2020
Handling of floating point environment Open

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

emscripten-core/emscripten#11086 · 4 comments · Opened May 5, 2020
Embind vectors, sets or maps to be converted to JS Arrays, Sets and Maps Open

embind

emscripten-core/emscripten#11070 · 14 comments · 5 reactions · 1 assignee · Opened May 2, 2020
[perf] Unnecessary memory growth check repetitions Open

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

emscripten-core/emscripten#11059 · 10 comments · Opened May 1, 2020
Adding a function on value_object Open

wontfix

emscripten-core/emscripten#11027 · 2 comments · 1 reaction · 1 assignee · Opened Apr 29, 2020
co_yield Open

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

emscripten-core/emscripten#10991 · 20 comments · Opened Apr 24, 2020
Bug in page:WebIDL Binder Open

wontfix

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

emscripten-core/emscripten#10971 · 2 comments · Opened Apr 21, 2020
NODEFS can't FS.stat a link Open

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

emscripten-core/emscripten#10903 · 3 comments · Opened Apr 13, 2020
LLD_REPORT_UNDEFINED reported false positives for EM_JS functions Open

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

emscripten-core/emscripten#10779 · 3 comments · Opened Mar 26, 2020
API mismatch regarding identification of DOM elements Open

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

emscripten-core/emscripten#10775 · 4 comments · Opened Mar 26, 2020
Error from wasm-ld: Section too large Open

Difficulty 4/5 3-5 days Newbie friendliness 28/100

emscripten-core/emscripten#10719 · 24 comments · Opened Mar 18, 2020
WebIDL + JSImplementation + DOMString Open

good first bug help wanted

Difficulty 4/5 3-5 days Newbie friendliness 28/100

emscripten-core/emscripten#10705 · 2 comments · Opened Mar 17, 2020
LTO in wasm backend not that effective Open

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

emscripten-core/emscripten#10603 · 20 comments · Opened Feb 28, 2020
Event Loop Integration: Support for Poll, Epoll or Coroutines Open

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

emscripten-core/emscripten#10556 · 9 comments · 1 reaction · Opened Feb 24, 2020
HTML inputs are locked after calling `emscripten_set_main_loop`, and still locked after calling `emscripten_cancel_main_loop` Open

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

emscripten-core/emscripten#10542 · 15 comments · 5 reactions · Opened Feb 22, 2020
Strict option breaks Autotools AC_CHECK_FUNCS Open

good first bug help wanted

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

emscripten-core/emscripten#10470 · 4 comments · Opened Feb 15, 2020

emscripten-core/emscripten

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