Re: CVS commit: src

[Joerg Sonnenberger <joerg%britannica.bec.de@localhost>]

On Sun, Mar 18, 2012 at 11:17:32PM -0700, Matt Thomas wrote:
> 
> On Mar 18, 2012, at 10:38 PM, Hiroyuki Bessho wrote:
> 
> > Module Name:        src
> > Committed By:       bsh
> > Date:               Mon Mar 19 05:38:26 UTC 2012
> > 
> > Modified Files:
> >     src/external/gpl3/binutils/usr.sbin/dbsym: dbsym.8 dbsym.c
> >     src/sys/arch/arm/conf: Makefile.arm
> >     src/sys/conf: Makefile.kern.inc
> > 
> > Log Message:
> > adjust the size of db_symtab space automatically.
> > proposed on tech-toolchain@, and got no objections.
> 
> Opps.  I meant to complain.  I really dislike the editing of opt_ksyms.h
> since that will cause things to be rebuilt after every config.
> 
> I wonder if we could do a ld -r -o <kernel>_prelink.o *.o 
> and then use that to calculate SYMTAB_SPACE.

I think the idea is basically sound, but might want a few minor changes.
What about:
- kern_ksyms.c has a weak reference to the real db_symtab
- initial link uses normal OBJS list and computes SYMTAB_SPACE
- an additional object file containing just db_symtab is built from that
- final link uses all normal OBJS and this additional one.

Joerg