Re: [Fwd: What do people think about not installing a stripped /kernel ?]

From: Ruslan Ermilov (ru_at_FreeBSD.ORG)
Date: 10/21/04

  • Next message: Brooks Davis: "Re: [Fwd: What do people think about not installing a stripped /kernel ?]" 
    Date: Thu, 21 Oct 2004 01:40:33 +0300
To: Maxim Sobolev <sobomax@portaone.com>

    On Thu, Oct 21, 2004 at 01:30:53AM +0300, Maxim Sobolev wrote:
    > Maxim Sobolev wrote:
    >
    > >OK, I've just checked objcopy manpage and found that there is actually a
    > >better way which combines best properties of both approach. In modern
    > >GNU toolchain it is possible to split executable and debugging info into
    > >two separate files, but put a reference into executable, so that you
    > >don't have to worry about how to load debugging symbols:
    > >
    [...]
    > >I checked, this works like a charm with our current toolchain/gdb. This
    > >allows us to do the following clever trick WRT kernel debug:
    > >
    > >1. Compile kernel/modules with debugging symbols;
    > >2. Split out executable and debugging pieces for each module;
    > >3. Associate each executable file with appropriate debug file;
    > >4. Install executable into /boot/kernel as usually;
    > >5. Install real debugging into /var/something, put symlink to it into
    > >/boot/kernel.
    > >
    > >By the way, this approach can be extended to be an option of buildworld
    > >as well! It can be good way to trade developers' time for some hdd
    > >space, since with this option "on" you will always be able to debug
    > >misbehaving application/library without the need to recompile/reinstall
    > >everything!
    >
    > BTW, it also allows us to do create separate "debug" distribution for
    > release CDs. So that one can do binary install and then add debugging
    > symbols if necessary.
    >
    Now go and hack kmod.mk and kern.post.mk, and I will go to bed. ;)
    Psycho! :-)

    Cheers, 

    -- 
Ruslan Ermilov
ru@FreeBSD.org
FreeBSD committer

  • Next message: Brooks Davis: "Re: [Fwd: What do people think about not installing a stripped /kernel ?]"

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