diff -up openssl-1.0.0d/engines/Makefile.mingw-sfx openssl-1.0.0d/engines/Makefile
--- openssl-1.0.0d/engines/Makefile.mingw-sfx	2011-04-23 13:04:15.452843560 +0300
+++ openssl-1.0.0d/engines/Makefile	2011-04-23 13:04:15.689846190 +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=`expr "$(SHLIB_EXT)" : '.*\(\.[a-z][a-z]*\)' \| ".so"`;;	\