当我们共享定制内核时，通常不提供调试信息。
类似于 sudo apt-get install linux-image-$(uname -r)-dbgsym，我想为自定义构建的内核创建单独的调试信息文件。
Here和 here他们一般性地解释。我请求分享有关为整个 Linux 内核创建单独的调试信息文件的知识。
示例程序
$ gcc -g calc.c
$ ls -l
total 16
-rwxrwxr-x 1 jeyaram jeyaram 8424 Apr 8 09:44 a.out
-rw-rw-r-- 1 jeyaram jeyaram 246 Apr 8 09:32 calc.c
$ objcopy --only-keep-debug a.out a.debug
$ gcc calc.c -------------> compiling without debug info (skipped 'strip')
$ ls -l
total 20
-rwxrwxr-x 1 jeyaram jeyaram 4736 Apr 8 09:45 a.debug
-rwxrwxr-x 1 jeyaram jeyaram 7200 Apr 8 09:52 a.out
-rw-rw-r-- 1 jeyaram jeyaram 246 Apr 8 09:32 calc.c
$ objcopy --add-gnu-debuglink=a.debug a.out
$ gdb a.out
GNU gdb (Ubuntu/Linaro 7.4-2012.02-0ubuntu2) 7.4-2012.02
Copyright (C) 2012 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "i686-linux-gnu".
For bug reporting instructions, please see:
<http://bugs.launchpad.net/gdb-linaro/>...
Reading symbols from /home/jeyaram/JJJ/debug_info_analysis/sample_c_test/a.out...Reading symbols from /home/jeyaram/JJJ/debug_info_analysis/sample_c_test/a.debug...done.
done.
但是在尝试使用 vmlinux 时
$ objcopy --only-keep-debug vmlinux vmlinux.debug
objcopy: Unable to recognise the format of the input file `vmlinux'
遗漏了什么？？？
最佳答案
vmlinux 是一个二进制 blob。您要查找的文件是 vmlinux.bin(这是 elf 中间件)。
像魅力一样工作:
objcopy --only-keep-debug vmlinux.bin vmlinux.debug
关于linux - 如何将内核调试信息构建为单独的文件？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/22910537/