当我们共享定制的内核时，通常不提供调试信息。
与sudo apt get install linux image-uname -r-dbgsym类似，我想为定制的内核创建单独的调试信息文件。
Here和here他们一般解释。我请求共享有关为整个linux内核创建单独调试信息文件的知识。
用于示例程序
$ 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.
但在尝试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（elf intermediate）。
魅力四射：
objcopy——只保留debug vmlinux.bin vmlinux.debug