supply the 2nd arg correctly, so don't use _setjmp directly in that
case. */
#undef HAVE__SETJMP
+
+/* Unlike MS and mingw.org, MinGW64 doesn't define gai_strerror as an
+ inline function in a system header file, and instead seems to
+ require to link against ws2_32.a. But we don't want to link with
+ -lws2_32, as that would make Emacs dependent on the respective DLL.
+ So MinGW64 is amply punished here by the following: */
+#undef HAVE_GAI_STRERROR
#endif
/* The following is needed for recovery from C stack overflows. */