diff -rup zlib-1.2.3.orig/win32/Makefile.gcc zlib-1.2.3.new/win32/Makefile.gcc
--- zlib-1.2.3.orig/win32/Makefile.gcc	2003-08-01 23:49:00.000000000 -0400
+++ zlib-1.2.3.new/win32/Makefile.gcc	2008-09-02 08:24:44.000000000 -0400
@@ -45,6 +45,9 @@ ARFLAGS = rcs
 RC = windres
 RCFLAGS = --define GCC_WINDRES
 
+DLLWARP = dllwrap
+STRIP = strip
+
 CP = cp -fp
 # If GNU install is available, replace $(CP) with install.
 INSTALL = $(CP)
@@ -79,9 +82,9 @@ $(STATICLIB): $(OBJS) $(OBJA)
 $(IMPLIB): $(SHAREDLIB)
 
 $(SHAREDLIB): win32/zlib.def $(OBJS) $(OBJA) zlibrc.o
-	dllwrap --driver-name $(CC) --def win32/zlib.def \
+	$(DLLWRAP) --driver-name $(CC) --def win32/zlib.def \
 	  --implib $(IMPLIB) -o $@ $(OBJS) $(OBJA) zlibrc.o
-	strip $@
+	$(STRIP) $@
 
 example: example.o $(STATICLIB)
 	$(LD) $(LDFLAGS) -o $@ example.o $(STATICLIB)
@@ -104,12 +107,13 @@ zlibrc.o: win32/zlib1.rc
 .PHONY: install uninstall clean
 
 install: zlib.h zconf.h $(LIB)
-	-@if not exist $(INCLUDE_PATH)/nul mkdir $(INCLUDE_PATH)
-	-@if not exist $(LIBRARY_PATH)/nul mkdir $(LIBRARY_PATH)
+	-mkdir -p $(INCLUDE_PATH)
+	-mkdir -p $(LIBRARY_PATH)
 	-$(INSTALL) zlib.h $(INCLUDE_PATH)
 	-$(INSTALL) zconf.h $(INCLUDE_PATH)
 	-$(INSTALL) $(STATICLIB) $(LIBRARY_PATH)
 	-$(INSTALL) $(IMPLIB) $(LIBRARY_PATH)
+	-$(INSTALL) $(SHAREDLIB) $(BINARY_PATH)
 
 uninstall:
 	-$(RM) $(INCLUDE_PATH)/zlib.h