Get rid of Windows-specific stuff.

--- crypto++/dll.cpp	2009-03-01 19:44:02.000000000 +0100
+++ crypto++/dll.cpp	2009-08-11 00:49:34.000000000 +0200
@@ -39,7 +39,7 @@ NAMESPACE_END
 
 #endif
 
-#ifdef CRYPTOPP_EXPORTS
+#if defined CRYPTOPP_EXPORTS && defined _MSC_VER
 
 USING_NAMESPACE(CryptoPP)
 
--- crypto++/GNUmakefile	2009-03-15 02:48:02.000000000 +0100
+++ crypto++/GNUmakefile	2009-08-11 01:23:09.000000000 +0200
@@ -136,7 +136,7 @@ nolib: $(OBJS)		# makes it faster to tes
 dll: cryptest.import.exe dlltest.exe
 
 cryptopp.dll: $(DLLOBJS)
-	$(CXX) -shared -o $@ $(CXXFLAGS) $(DLLOBJS) $(LDFLAGS) $(LDLIBS) -Wl,--out-implib=libcryptopp.dll.a
+	$(CXX) -shared -o $@ $(CXXFLAGS) $(DLLOBJS) $(LDFLAGS) $(LDLIBS)
 
 libcryptopp.import.a: $(LIBIMPORTOBJS)
 	$(AR) $(ARFLAGS) $@ $(LIBIMPORTOBJS)
