Questions tagged [emscripten]
Emscripten is an LLVM-to-JavaScript compiler. It takes LLVM bitcode - which can be generated from C/C++, using llvm-gcc or clang, or any other language that can be converted into LLVM - and compiles that into JavaScript, which can be run on the web (or anywhere else JavaScript can run).
emscripten
1,285
questions
0
votes
0
answers
59
views
Is it possible to webassembly a C++ Windows application using emscripten:
I have a complex windows application that uses MFC and some OpenGL.
I'd like to use Webassembly https://github.com/emscripten-core/emscripten
to use emscripten to convert the c++ application to web.
...
- 1,226
0
votes
0
answers
31
views
emscripten_request_pointerlock() returns EMSCRIPTEN_RESULT_UNKNOWN_TARGET
I have made an example that calls emscripten_request_pointerlock("screen", false); by mouse click:
void mousePressEvent(QMouseEvent *event) override
{
EMSCRIPTEN_RESULT result = ...
- 1,018
0
votes
0
answers
20
views
emscripten module usage and multiple instance?
emscripten 1.38.31
I compiled C++ to a pure JS file with the following command line:
call emcc -fno-exceptions -s ASSERTIONS=1 --closure 1 -s MODULARIZE=1 --memory-init-file 0 -s WASM=0 -g0 -v -s ...
- 299
0
votes
1
answer
35
views
Module.requestFullscreen is not a function in Emscripten
When compiling to WebAssembly using Emscripten, Emscripten gives you .wasm file, a .html file and a .js file. The html file, it seems, is set up to give a basic demonstration of the workings of ...
- 12.8k
0
votes
0
answers
22
views
How can I return a vector of structs in C++ using Emscripten and WebAssembly
I want to return to the javascript a type created in c++, called PlayerAction.
PlayerAction have two elements, Player, type int and Action, type int_64
I tried to do it the way below but it doesn't ...
-1
votes
2
answers
89
views
Webassembly as 32bit and 64bit
webassembly emitted from emscripten is 32bit and it can be 64bit. The target device for emscripten is Browsers. Why will it even depend on 32bit ,64bit architectures , as the browser interacts with ...
1
vote
0
answers
54
views
Webassembly WASM is too slow compared with SH shell
I have basic C program (in below) and converting to WASM using emcc to .wasm file.
#include <stdio.h>
int main() {
// Iterate from 1 to 10
for (int i = 1; i <= 10000000; ++i) {
...
- 519
1
vote
1
answer
64
views
Cannot use ES6 import of Emscripten-generated JS file in Node environment
I have a web app that uses WebAssembly code to perform resource-intensive calculations. The C++ code is compiled with Emscripten with following flags:
--bind -s ALLOW_MEMORY_GROWTH=1 -s MODULARIZE=1 -...
0
votes
1
answer
47
views
call javascript with await from c++ using Emscripten/embind
a javascript function like this:
async function getData(){
//do something and return a string
}
my_module.set_js_func(getData);
my c++ emscripten code like this:
//bind c++ function
...
- 299
0
votes
0
answers
40
views
OpenCV GaussianBlur produces garbled output WASM
I compiled OpenCV for WebAssembly to apply image smoothing and other transforms to images but GaussianBlur produces a garbled image.
C++ code I'm using to blur the image
// input image RGBA
Mat image(...
- 474
0
votes
1
answer
246
views
ensure you have llvm-symbolizer in your PATH or set the environment var LLVM_SYMBOLIZER_PATH to point to it - exit code 139
in my case I am trying to build a library (open cascade) using emscripten.
I have to use a specific version of Emscripten (3.1.39) so clang version is 13.
I am using Ubuntu 22
LOGS:
[ 0%] Building ...
- 41
1
vote
0
answers
135
views
clang frontend command failed with exit code 139
I know this seems an already asked question, but I can't find a solution to the error I am facing.
I am trying to build Open-Cascade version V7.5.3 on my ubuntu hyper-v VM, using EMSCRIPTEN.
I run ...
- 41
0
votes
0
answers
70
views
How to "manually" map from WASM to source code with DWARF file
I am using Emscripten to compile C++ source code into WASM modules. I am compiling with several debug settings and am able to get the module to print out the line number in the WASM where the error ...
- 11
0
votes
1
answer
148
views
I figured out how to use WASM with nextjs via emscripten, but my solution is really stupid
I wanted to call a C++ function from my next.js component. Using emscripten and the -sENVIRONMENT='web' -sMODULARIZE=1 flags, I compiled the C++ into main.js and main.wasm. I tried running it from a ...
0
votes
0
answers
107
views
Undefined Symbol - Issue when building a project with EMCC
I am trying to compile with EMCC (EMSCRIPTEN) a c++ project built on top of IfcOpenShell ( a c++ library, here some references Installation Github).
it's my first time doing it so I had lots of issues,...
- 41