diff -up openssl-1.0.0a/engines/Makefile.mingw-sfx openssl-1.0.0a/engines/Makefile
--- openssl-1.0.0a/engines/Makefile.mingw-sfx	2010-06-19 21:52:59.000000000 +0300
+++ openssl-1.0.0a/engines/Makefile	2010-06-19 21:53:34.000000000 +0300
@@ -111,7 +111,10 @@ install:
 		for l in $(LIBNAMES); do \
 			( echo installing $$l; \
 			  pfx=lib; \
-			  if [ "$(PLATFORM)" != "Cygwin" ]; then \
+			  if [ "$(PLATFORM)" = "mingw" ]; then \
+				sfx=.dll; \
+				cp $$pfx$$l$$sfx $(INSTALL_PREFIX)$(INSTALLTOP)/lib/engines/$$pfx$$l$$sfx.new; \
+			  elif [ "$(PLATFORM)" != "Cygwin" ]; then \
 				case "$(CFLAGS)" in \
 				*DSO_BEOS*)	sfx=".so";;	\
 				*DSO_DLFCN*)	sfx=".so";;	\