Eu personalizei janelas gdb no emacs. Depois, durante a depuração, o novo código-fonte é aberto em janelas diferentes. Eu gostaria de ver o código fonte apenas em uma janela. Minha personalização do gdb é:

;     _____________________________________________________________________________________
;    |                                          |                                          |
;    |              BREAKPOINTS                 |                                          |
;    |__________________________________________|                                          |
;    |                                          |                                          |
;    |                 STACK                    |                                          |
;    |__________________________________________|                                          |
;    |                                          |                                          |
;    |                                          |                                          |
;    |                 LOCALS                   |                                          |
;    |                                          |                SOURCE CODE               |
;    |__________________________________________|                                          |
;    |                                          |                                          |
;    |                                          |                                          |
;    |                                          |                                          |
;    |                                          |                                          |
;    |                                          |                                          |
;    |                                          |                                          |
;    |                  GDB                     |                                          |
;    |                                          |__________________________________________|
;    |                                          |                                          |
;    |                                          |                                          |
;    |                                          |                    I/O                   |
;    |                                          |                                          |
;    |__________________________________________|__________________________________________|

(require 'gud)

; invoke
(global-set-key [f8] 'gdb)

; GDB layout
(defadvice gdb-setup-windows (after activate)
  (gdb-setup-my-windows)
)

(defun gdb-setup-my-windows ()
  (set-window-dedicated-p (selected-window) nil)
  (switch-to-buffer gud-comint-buffer)
  (delete-other-windows)
  (let
    ((win0 (selected-window))             ; breakpoints
     (win1 (split-window-horizontally
         (floor (* 0.5 (window-width)))))   ; source + i/o
     (win2 (split-window-vertically
         (floor (* 0.5 (window-body-height))))) ; gdb
     (win3 (split-window-vertically
        (floor (* 0.5 (window-body-height))))) ; locals
     (win4 (split-window-vertically
         (floor (* 0.6 (window-body-height))))) ; stack
    )
    (select-window win1)
    ; configurating right window
    (let
    ((winSrc (selected-window)) ; source
     (winIO (split-window-vertically (floor (* 0.9 (window-body-height))))) ; I/O
     )
      (set-window-buffer winIO (gdb-get-buffer-create 'gdb-inferior-io))
      (set-window-buffer
    winSrc
    (if gud-last-last-frame
     (gud-find-file (car gud-last-last-frame))
      (if gdb-main-file
       (gud-find-file gdb-main-file)
     (list-buffers-noselect))))
      (setq gdb-source-window winSrc)
      (set-window-dedicated-p winIO t)
   )

    (set-window-buffer win0 (gdb-get-buffer-create 'gdb-breakpoints-buffer))
    (set-window-buffer win3 (gdb-get-buffer-create 'gdb-locals-buffer))
    (set-window-buffer win4 (gdb-get-buffer-create 'gdb-stack-buffer))
    (select-window win2)
  )
)

; GDB variables
(setq gdb-many-windows t)
(setq gdb-show-main t)
(setq gdb-show-changed-values t)
(setq gdb-use-colon-colon-notation t)
(setq gdb-use-separate-io-buffer nil)
(setq gdb-delete-out-of-scope t)
(setq gdb-speedbar-auto-raise t)

A tela principal é:tela de gdb após o início

Mas quando eu comecei a depurar, o próximo arquivo de origem é aberto em outra janela. Veja o exemplo abaixo:Novo código-fonte na janela gdb

O exemplo de aplicativo para reproduzir é:

main.cpp

#include "classB.h"

int main()
{
  B *b = 0;
  b = new B();
  return 0;
}

classA.h

#ifndef CLASS_A_H
#define CLASS_A_H

class A
{
public:
  A();
};

#endif

classA.cpp

#include "classA.h"
#include <iostream>

A::A()
{
  std::cout << "Constructor A" << std::endl;
}

classB.h

#ifndef CLASS_B_H
#define CLASS_B_H

#include "classA.h"

class B : public A
{
public:
  B();
};

#endif

classB.cpp

#include "classB.h"
#include <iostream>

B::B() : A()
{
  std::cout << "Constructor B" << std::endl;
}

Makefile

SOURCES=main.cpp classA.cpp classB.cpp
TARGET=test
CXX_FLAGS=-g

.PHONY: all

all: $(TARGET)

$(TARGET): $(SOURCES)
    $(CXX) $(CXX_FLAGS) $^ -o $@

.PHONY: clean

clean:
    rm -vf $(TARGET)

Etapa para reproduzir:

Execute o emacs

M-x gdb

teste gdb -i = mi

Na janela de comando gdb, execute: start

executar: próximo

executar: passo

Meu ambiente é: Ubuntu14.04, gdb - 7.7.1, emacs - 25.1.1.

Eu tentei usarset-window-dedicado-p. Mas isso não é solução para o meu problema. Eu sou novo no emacs, me ajude por favor, o que há de errado na minha configuração?