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diff --git a/Source/external/SDL2/src/file/cocoa/SDL_rwopsbundlesupport.m b/Source/external/SDL2/src/file/cocoa/SDL_rwopsbundlesupport.m
new file mode 100644
index 0000000..8f1bf54
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+++ b/Source/external/SDL2/src/file/cocoa/SDL_rwopsbundlesupport.m
@@ -0,0 +1,62 @@
+/*
+  Simple DirectMedia Layer
+  Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org>
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+*/
+#include "../../SDL_internal.h"
+
+#ifdef __APPLE__
+#import <Foundation/Foundation.h>
+
+#include "SDL_rwopsbundlesupport.h"
+
+/* For proper OS X applications, the resources are contained inside the application bundle.
+ So the strategy is to first check the application bundle for the file, then fallback to the current working directory.
+ Note: One additional corner-case is if the resource is in a framework's resource bundle instead of the app.
+ We might want to use bundle identifiers, e.g. org.libsdl.sdl to get the bundle for the framework,
+ but we would somehow need to know what the bundle identifiers we need to search are.
+ Also, note the bundle layouts are different for iPhone and Mac.
+*/
+FILE* SDL_OpenFPFromBundleOrFallback(const char *file, const char *mode)
+{ @autoreleasepool
+{
+    FILE* fp = NULL;
+
+    /* If the file mode is writable, skip all the bundle stuff because generally the bundle is read-only. */
+    if(strcmp("r", mode) && strcmp("rb", mode)) {
+        return fopen(file, mode);
+    }
+
+    NSFileManager* file_manager = [NSFileManager defaultManager];
+    NSString* resource_path = [[NSBundle mainBundle] resourcePath];
+
+    NSString* ns_string_file_component = [file_manager stringWithFileSystemRepresentation:file length:strlen(file)];
+
+    NSString* full_path_with_file_to_try = [resource_path stringByAppendingPathComponent:ns_string_file_component];
+    if([file_manager fileExistsAtPath:full_path_with_file_to_try]) {
+        fp = fopen([full_path_with_file_to_try fileSystemRepresentation], mode);
+    } else {
+        fp = fopen(file, mode);
+    }
+
+    return fp;
+}}
+
+#endif /* __APPLE__ */
+
+/* vi: set ts=4 sw=4 expandtab: */