the dyn lib shall also be installed and cleaned. :-)

src/Makefile

@@ -88,11 +88,11 @@ test: unittests
 clean:
 	rm -vf *.o \
 		*.a \
-		unittests fuzz
+		unittests fuzz $(TARGET)
 
 install: lib
 	mkdir -p $(PREFIX)/include/pEp
-	cp pEpMIME.hh $(PREFIX)/include/pEp
+	cp -v pEpMIME.hh $(PREFIX)/include/pEp
 	mkdir -p $(PREFIX)/lib
-	cp libpEpMIME.a $(PREFIX)/lib
+	cp -v $(TARGET) libpEpMIME.a $(PREFIX)/lib