[PATCH] Add declarations to gdbtk.h

["Christian Biesinger via insight" <insight@sourceware.org>]

From: Christian Biesinger <cbiesinger@chromium.org>

Currently, gdb/main.c has to declare these two variables in the
.c file. This patch adds the declarations to the header so that
gdb can just use them.

gdbtk/ChangeLog:

2019-10-07  Christian Biesinger  <cbiesinger@chromium.org>

	* generic/gdbtk.h (gdbtk_test): Declare.
  (external_editor_command): Declare.
  (file): Prefix Tcl_Interp with "struct"
  so that this compiles when Tcl headers aren't included.
  * generic/gdbtk-interp.h:  Likewise.
---
 gdbtk/generic/gdbtk-interp.h |  2 +-
 gdbtk/generic/gdbtk.h        | 11 +++++++++--
 2 files changed, 10 insertions(+), 3 deletions(-)

diff --git a/gdbtk/generic/gdbtk-interp.h b/gdbtk/generic/gdbtk-interp.h
index 3126b91..9abad2e 100644
--- a/gdbtk/generic/gdbtk-interp.h
+++ b/gdbtk/generic/gdbtk-interp.h
@@ -53,7 +53,7 @@ public:
   ui_file *_stdtargin;
   ui_out *uiout;
 
-  Tcl_Interp *tcl;
+  struct Tcl_Interp *tcl;
 };
 
 extern gdbtk_interp *gdbtk_get_interp (void);
diff --git a/gdbtk/generic/gdbtk.h b/gdbtk/generic/gdbtk.h
index 7bb1f79..89ab8bf 100644
--- a/gdbtk/generic/gdbtk.h
+++ b/gdbtk/generic/gdbtk.h
@@ -77,6 +77,12 @@ extern int running_now;
 
 extern long gdbtk_pid;
 
+/*
+ * This variable controls the interaction with an external editor.
+ */
+
+extern char *external_editor_command;
+
 /* These two control how the GUI behaves when tracing or loading
    They are defined in gdbtk-cmds.c */
 
@@ -91,7 +97,7 @@ extern int load_in_progress;
 
 typedef struct gdbtk_result
   {
-    Tcl_Obj *obj_ptr;		/* This will eventually be copied over to the
+    struct Tcl_Obj *obj_ptr;		/* This will eventually be copied over to the
 				   Tcl result */
     int flags;			/* Flag vector to control how the result is
 				   used. */
@@ -151,7 +157,7 @@ extern int gdbtk_force_detach;
  *
  */
 
-extern int Gdbtk_Init (Tcl_Interp * interp);
+extern int Gdbtk_Init (struct Tcl_Interp * interp);
 extern void gdbtk_stop_timer (void);
 extern void gdbtk_start_timer (void);
 extern long gdbtk_getpid(void);
@@ -159,6 +165,7 @@ extern void gdbtk_ignorable_warning (const char *, const char *);
 extern int x_event (int);
 extern int gdbtk_two_elem_cmd (char *, const char *);
 extern int target_is_native (struct target_ops *t);
+extern int gdbtk_test (char *);
 extern struct ui_file *gdbtk_fileopen (void);
 extern bool gdbtk_disable_write;
 extern ptid_t gdbtk_get_ptid (void);
-- 
2.23.0.581.g78d2f28ef7-goog