emscripten-core/emscripten

To use dlopen, you need to use Emscripten's linking support

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#4,387 opened on Jun 7, 2016

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Description

I try to link dynamic lib to my code, but I get message as in issue name. I use dlopen for link library and set compilers flags from main - MAIN_MODULE=1 and SIDE_MODULE=1 for .so. My Makefile for dynamic lib:

libWebLib.js: WebLib.cpp
    emcc -fPIC -c WebLib.cpp -o WebLib.o
    emcc -shared -Wl,libWebLib.js -o libWebLib.js WebLib.o -s SIDE_MODULE=1
clean: $rm *.o *.so

And loadlib:

  void *handle;
  handle = dlopen("libWebLib.so", RTLD_NOW);

Contributor guide

Research direction
Investigate Emscripten's dynamic linking documentation and the proper flags for linking shared libraries. Examine the error message in context of MAIN MODULE and SIDE MODULE flags.
Tech stack
cppjavascript
Domain
build systemtooling
Issue type
Bug
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
3
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Active
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Mostly clear
Prerequisites
C++Emscripten basics
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
40