Separate save file for debug symbols after strip

Operating system environment
Linux ubuntu 3.2.0-24-generic-pae #37-Ubuntu SMP Wed Apr 25 10:47:59 UTC 2012 i686 i686 i386 GNU/Linux

background ：
  Generate release Version program , Conduct strip operation , however strip after , The executable program no longer has debugging information and some symbol tables . When something goes wrong , The investigation has brought great difficulties .
As the saying goes ：strip The better , When something goes wrong , The worse the headache .

Purpose ：
In order to balance , The symbol table is removed , When something goes wrong, you can use the symbol table . The symbol table and executable program are separated .

compiler ：
gcc -g test.c -o test

Make a symbol table
objcopy --only-keep-debug test test.dbg
test.dbg: Generated symbol table file

Executable program strip
strip test -o test_release
test_release: after strip The procedure after

already strip Program adds symbol table connection
objcopy --add-gnu-debuglink=test.dbg test_release
test_release: The file already contains the symbol table name connection

here test_release Namely strip Executable program after , When an exception occurs in the program core After the document , take test.dbg Put it in test_release Same directory ,
Can directly gdb test_strip core View segment error location , It's fine too GDB Mount program , This will show more information .

If the library file is strip, You can put debugging information in '/usr/lib/debug'
Where can I put it in gdb In mode , Use command :show debug-file-directory see

Here it is. Ubuntu Tried under the platform . This method can be used for dynamic libraries and executable programs , Static libraries are not allowed strip Of , Because it will work with the final executable program strip.
In the main program of our department , This method should be no problem , Interested colleagues can try , Let the main program also realize this function , Every time release When it comes to programming , At the same time, a symbol table ,
So there won't be any more GDB There's nothing I can do .