From 38f1a2c5dd3290fd4d6f99956933b63ece1ebccd Mon Sep 17 00:00:00 2001
From: mellondill <melondill@gmail.com>
Date: Mon, 12 Aug 2019 21:59:27 +0300
Subject: [PATCH] https://github.com/godotengine/godot/issues/31297 - HTML5:
 this.rtenv.callMain is not a function when using latest-upstream backend
 Added needed changed for normal compiling with emscripten 1.38.41 and later

(cherry picked from commit 3c176827d6f67ae09ba4406507a0a927e3d51dee)
---
 platform/javascript/detect.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/platform/javascript/detect.py b/platform/javascript/detect.py
index 23d947a96b3..e8f2995964a 100644
--- a/platform/javascript/detect.py
+++ b/platform/javascript/detect.py
@@ -120,6 +120,9 @@ def configure(env):
     env.Append(LINKFLAGS=['-s', 'INVOKE_RUN=0'])
     env.Append(LINKFLAGS=['-s', 'NO_EXIT_RUNTIME=1'])
 
+    #adding flag due to issue with emscripten 1.38.41 callMain method https://github.com/emscripten-core/emscripten/blob/incoming/ChangeLog.md#v13841-08072019
+    env.Append(LINKFLAGS=['-s', 'EXTRA_EXPORTED_RUNTIME_METHODS=["callMain"]'])
+
     # TODO: Move that to opus module's config
     if 'module_opus_enabled' in env and env['module_opus_enabled']:
         env.opus_fixed_point = "yes"