https://github.com/raysan5/raylib/wiki/Working-for-Web-(HTML5)

1. Download & Setup Emscripten

   Download and install — Emscripten 4.0.11-git (dev) documentation

   cd /c
   git clone https://github.com/emscripten-core/emsdk.git
   cd emsdk
   
   # Download and install the latest SDK tools.
   ./emsdk install latest
   
   # Make the "latest" SDK "active" for the current user. (writes .emscripten file)
   ./emsdk activate latest
   
   # Activate PATH and other environment variables in the current terminal
   source ./emsdk_env.sh
   

   Add to your environment path. For example, UCRT64 MSYS2 ZSH:

   path+=("/c/emsdk/upstream/emscripten")
   

   

2. Compile Raylib with Emscripten

   You can manually compile it in command-line, See: raysan5/raylib/wiki/Working-for-Web-(HTML5)#21-command-line-compilation

   <aside>

   Currently Jai only support wasm64. So if you need to compile Raylib to wasm64 add -m64

   </aside>

   #!/usr/bin/env bash
   set -e
   
   CFLAGS="-Os -Wall -DPLATFORM_WEB -DGRAPHICS_API_OPENGL_ES2"
   
   emcc -c rcore.c     -o rcore.o     $CFLAGS
   emcc -c rshapes.c   -o rshapes.o   $CFLAGS
   emcc -c rtextures.c -o rtextures.o $CFLAGS
   emcc -c rtext.c     -o rtext.o     $CFLAGS
   emcc -c rmodels.c   -o rmodels.o   $CFLAGS
   emcc -c raudio.c    -o raudio.o    -m64 -Os -Wall -DPLATFORM_WEB
   
   emar rcs libraylib.a rcore.o rshapes.o rtextures.o rtext.o rmodels.o raudio.o
   

   

3. Compile our game with Emscripten

   See CMakeLists.txt