Close gdb-windows when we exit debug session

custom/setup-gdb.el

@@ -1,3 +1,36 @@
 (setq gdb-many-windows 1)
 
+;; Select a register number which is unlikely to get used elsewere
+(defconst egdbe-windows-config-register 313465989
+  "Internal used")
+
+(defvar egdbe-windows-config nil)
+
+(defun set-egdbe-windows-config ()
+  (interactive)
+  (setq egdbe-windows-config (window-configuration-to-register egdbe-windows-config-register)))
+
+(defun egdbe-restore-windows-config ()
+  (interactive)
+  (jump-to-register egdbe-windows-config-register))
+
+(defun egdbe-start-gdb (&optional gdb-args)
+  ""
+  (interactive)
+  (set-egdbe-windows-config)
+  (call-interactively 'gdb))
+
+(defun egdbe-quit ()
+  "finish."
+  (interactive)
+  (gud-basic-call "quit")
+  (egdbe-restore-windows-config))
+
+(defun egdbe-gud-mode-hook ()
+  ""
+  (local-unset-key (kbd "q"))
+  (local-set-key (kbd "q") 'egdbe-quit))
+
+(add-hook 'gud-mode-hook 'egdbe-gud-mode-hook)
+
 (provide 'setup-gdb)