Use gcc warning flag -Wnested-externs

If the compiler supports the warning flag -Wnested-externs, use it.

Avoid the only warning by moving the declaration of xml_builtin to a
more proper place.

Signed-off-by: Blue Swirl <blauwirbel@gmail.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/gdbstub.h b/gdbstub.h
index 219abdab0e..ce5fdcc223 100644
--- a/gdbstub.h
+++ b/gdbstub.h
@@ -38,4 +38,7 @@ int gdbserver_start(int);
 int gdbserver_start(const char *port);
 #endif
 
+/* in gdbstub-xml.c, generated by feature_to_c.sh */
+extern const char *const xml_builtin[][2];
+
 #endif