diff --git a/flips.cpp b/flips.cpp
index 9f074a9..6a1024b 100644
--- a/flips.cpp
+++ b/flips.cpp
@@ -10,7 +10,12 @@
 //get rid of dependencies on libstdc++, they waste 200KB on this platform
 void* operator new(size_t n) { return malloc(n); } // forget allocation failures, let them segfault.
 void operator delete(void * p) { free(p); }
+void operator delete(void * p, size_t n) { free(p); }
 extern "C" void __cxa_pure_virtual() { abort(); }
+
+#if __GNUC__ && (__cpp_rtti || __cpp_exceptions)
+#warning "Consider building with -fno-exceptions -fno-rtti, to avoid dependencies on libgcc_s_sjlj-1.dll and libstdc++-6.dll."
+#endif
 #endif
 
 //TODO: source ROM chooser