diff --git a/gdb/Makefile.in b/gdb/Makefile.in
index f71537f6595..a51d63755ef 100644
--- a/gdb/Makefile.in
+++ b/gdb/Makefile.in
@@ -724,6 +724,7 @@ ALL_64_TARGET_OBS = \
 ALL_TARGET_OBS = \
 	aarch32-tdep.o \
 	arc-linux-tdep.o \
+	arc-newlib-tdep.o \
 	arc-tdep.o \
 	arch/aarch32.o \
 	arch/arc.o \
diff --git a/gdb/arc-newlib-tdep.c b/gdb/arc-newlib-tdep.c
index 325e11b39a2..b11fe226389 100644
--- a/gdb/arc-newlib-tdep.c
+++ b/gdb/arc-newlib-tdep.c
@@ -36,7 +36,7 @@ arc_newlib_init_osabi (struct gdbarch_info info, struct gdbarch *gdbarch)
 {
   arc_newlib_debug_printf ("Initialization.");
 
-  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
+  arc_gdbarch_tdep *tdep = (arc_gdbarch_tdep *) gdbarch_tdep (gdbarch);
 
   /* Offset of original PC in longjmp jump buffer (in registers).  Value of PC
      offset can be found in newlib/libc/machine/arc/setjmp.S.  */