glfwInit fails with js error

[iamlolzMC]

Hello. I'm trying to run game that uses glfw. But when glfwInit() is executed, an error is returned to the console.

The function in which this happens:

static int
openGLFW(EngineOpenParams *openparams)
{
	glGlobals.winWidth = openparams->width;
	glGlobals.winHeight = openparams->height;
	glGlobals.winTitle = openparams->windowtitle;
	glGlobals.pWindow = openparams->window;

	memset(&gl3Caps, 0, sizeof(gl3Caps));

	/* Init GLFW */
	if(!glfwInit()){
		RWERROR((ERR_GENERAL, "glfwInit() failed"));
		return 0;
	}
	glGlobals.monitor = glfwGetMonitors(&glGlobals.numMonitors)[0];
	makeVideoModeList();
	return 1;
}

Console output:

Built with these libraries:
-lopenal -lmpg123 -lpthread -lGLESv2 -lglfw

Built wit these linker params:
-m32 -sERROR_ON_UNDEFINED_SYMBOLS=0 -sLINKABLE=1 -sEXPORT_ALL=1 -sUSE_PTHREADS=1 -sUSE_GLFW=3 -sUSE_WEBGL2=1 -sFULL_ES2 -sPTHREAD_POOL_SIZE=4 -sPROXY_TO_PTHREAD -sALLOW_MEMORY_GROWTH=1 -sDEFAULT_LIBRARY_FUNCS_TO_INCLUDE=[\'emscripten_builtin_memalign\'] -sSTACK_OVERFLOW_CHECK=1 -sSAFE_HEAP=1 -sDETERMINISTIC=1 -sNO_EXIT_RUNTIME=1 -sMIN_WEBGL_VERSION=2 -sMAX_WEBGL_VERSION=2 -sAUTO_JS_LIBRARIES -gsource-map --preload-file . -o index.html --source-map-base http://172.19.165.84:8000/

[sbc100]

The problem looks due to the fact that you are trying to do graphics stuff in a pthread (due to -sPROXY_TO_PTHREAD). You might want to look into the OFFSCREENCANVAS_SUPPORT and OFFSCREEN_FRAMEBUFFER options as I think they are needed in this cas.