Makefile: remove old libs before installing
diff --git a/Makefile b/Makefile
index c7be5d4..73e5a63 100644
--- a/Makefile
+++ b/Makefile
@@ -263,6 +263,8 @@
 
 install: $(PKGCFGF) $(ARCHIVE) $(LIBRARY)
 	mkdir -p $(LIBDIR)
+	# remove potential broken old libs
+	rm -f $(LIBDIR)/lib$(LIBNAME).*
 	$(INSTALL_LIBRARY) lib$(LIBNAME).$(EXT) $(LIBDIR)
 ifneq ($(VERSION_EXT),)
 	ln -s $(LIBDIR)/lib$(LIBNAME).$(EXT) $(LIBDIR)/lib$(LIBNAME).$(VERSION_EXT)