emacs as the c++ ide on the Ubuntu

emacs as the c++ ide on the Ubuntu

Install tools

If you don't already have g++, make, and gdb, install them:

sudo apt-get install g++ make gdb

Create files

Create a project directory:

mkdir hellworld

Create a source file helloworld/hello.cpp:

#include <iostream>

int main(void) 
{
   char greeting[] = "Hello World!";
   std::cout << greeting << std::endl;
   return 0;
}

Create a makefile helloworld/Makefile:

# Makefile for GNU g++

CC=g++
CFLAGS=-g -Wall
all: hello

hello: hello.cpp
    $(CC) $(CFLAGS) -o hello hello.cpp

clean:
    rm hello

Compile within Emacs

Open hello.cpp in Emacs

M-x compile RET

make -k RET

Run using Emacs shell

M-! ./hello RET

You should see the output in the minibuffer.

Debug with gdb in Emacs

For more information see: 32.6 Running Debuggers Under Emacs in the GNU Emacs manual.

To show multiple debugging windows such as breakpoints, locals, etc., set the gdb-many-windows variable in ~/.emacs:

(setq gdb-many-windows t)

Restart Emacs.

Start the debugger. While visiting helloworld/hello.cpp: M-x gdb RET --annotate=3 hello RET

Set a breakpoint by clicking in the left margin at the desired location.

Run the debugger by typing run at the (gdb) prompt in the gud-hello buffer.

In the GUD buffer, use the following commands:

C-c C-s Step into
C-c C-n Stev over
C-c C-p Evaluate the expression at point.
C-c C-r Continue
C-c C-u Continue until current line

When finished, type quit at the (gdb) prompt.

GDB quick reference

l => list
break 16 => breakpoint at line16
r => run
n => next
p i => print i
c => continue
q => quit
bt => check the function stack

http://darkdust.net/files/GDB%20Cheat%20Sheet.pdf

Reference

Notes on C++ development with Emacs on Ubuntu Linux

GDB: The GNU Project Debugger

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Post by: Jalen Wang (转载请注明出处)