diff --git a/Mac/mwerks/mwerks_carbonplugin_config.h b/Mac/mwerks/mwerks_carbonplugin_config.h
new file mode 100644
index 00000000000..0d5429ace9a
--- /dev/null
+++ b/Mac/mwerks/mwerks_carbonplugin_config.h
@@ -0,0 +1,19 @@
+/*
+** Config file for dynamically-loaded ppc/cfm68k plugin modules.
+*/
+#define ACCESSOR_CALLS_ARE_FUNCTIONS 1
+#define OPAQUE_TOOLBOX_STRUCTS 1
+#define TARGET_API_MAC_CARBON 1
+#define TARGET_API_MAC_CARBON_NOTYET 1 /* Things we should do eventually, but not now */
+
+/* #define USE_GUSI1		/* Stdio implemented with GUSI */
+#define USE_GUSI2		/* Stdio implemented with GUSI */
+#if defined(USE_GUSI1) || defined(USE_GUSI2)
+#define USE_GUSI
+#endif
+#define WITH_THREAD		/* Use thread support (needs GUSI 2, not GUSI 1) */
+#define USE_MSL			/* Use MSL libraries */
+#ifdef USE_MSL
+#define MSL_USE_PRECOMPILED_HEADERS 0	/* Don't use precomp headers: we include our own */
+#include <ansi_prefix.mac.h>
+#endif