diff --git a/gdb/configure.ac b/gdb/configure.ac
index 4e0cf7d..e970234 100644
--- a/gdb/configure.ac
+++ b/gdb/configure.ac
@@ -774,7 +774,7 @@ AC_FUNC_ALLOCA
 AC_FUNC_MMAP
 AC_FUNC_VFORK
 AC_CHECK_FUNCS([canonicalize_file_name realpath getrusage getuid \
-                getgid poll pread64 sbrk setpgid setpgrp setsid \
+                getgid kill poll pread64 sbrk setpgid setpgrp setsid \
 		sigaction sigprocmask sigsetmask socketpair syscall \
 		ttrace wborder setlocale])
 
diff --git a/gdb/event-top.c b/gdb/event-top.c
index 5483608..dd223e1 100644
--- a/gdb/event-top.c
+++ b/gdb/event-top.c
@@ -50,6 +50,14 @@ static void change_line_handler (void);
 static void change_annotation_level (void);
 static void command_handler (char *command);
 
+#if defined (SIGHUP) && !defined (HAVE_KILL)
+/* On x86_64-windows, MingW's signal.h defines SIGHUP but does not
+   provide "kill".  However, the code that uses SIGHUP below also
+   uses kill.  So, if kill is not available, pretend SIGHUP isn't
+   either.  */
+#undef SIGHUP
+#endif
+
 /* Signal handlers. */
 #ifdef SIGQUIT
 static void handle_sigquit (int sig);