[gdb/build, s390x] Fix build after gdbarch_tdep changes

Commit 345bd07cce33 ("gdb: fix gdbarch_tdep ODR violation") changes a
declaration in s390-tdep.h from

   struct gdbarch_tdep { ... };

to

   struct s390_gdbarch_tdep : gdbarch_tdep { ... };

and now requires that gdbarch_tdep has been declared before.  Which is
usually the case, except when compiling s390-linux-nat.c, where
s390-tdep.h is included before gdbarch.h.  Thus the s390x build errors out
with the compiler complaining about a missing class name after the colon.

Fix this in s390-linux-nat.c, by including gdbarch.h before s390-tdep.h.

diff --git a/gdb/s390-linux-nat.c b/gdb/s390-linux-nat.c
index 8f6eb61505bd1ec5345f585284edc9e2bddc564b..4c64a8548038aed6baafadb8de923fdf72fd3eed 100644 (file)
--- a/gdb/s390-linux-nat.c
+++ b/gdb/s390-linux-nat.c
@@ -29,6 +29,7 @@
 #include "regset.h"
 #include "nat/linux-ptrace.h"
 #include "gdbcmd.h"
+#include "gdbarch.h"
 
 #include "s390-tdep.h"
 #include "s390-linux-tdep.h"
@@ -43,7 +44,6 @@
 #include <algorithm>
 #include "inf-ptrace.h"
 #include "linux-tdep.h"
-#include "gdbarch.h"
 
 /* Per-thread arch-specific data.  */