Re: enable KGDB causes the build failure

[Rui-Xiang Guo <rxg%lavabit.com@localhost>]

On Sat, Sep 28, 2024 at 01:14:10PM +0300, Valery Ushakov wrote:
> On Sat, Sep 28, 2024 at 17:20:27 +0800, Rui-Xiang Guo wrote:
> 
> > The build.sh runs on amd64 10.0 for cross compilation of evbarm GENERIC.
> > DDB, DDB_ONPANIC=1, DDB_HISTORY_SIZE=100 are commented out and KGDB is enabled.
> > 
> > --- db_interface.o ---
> > /home/rxg/10.0/usr/src/sys/arch/arm/arm32/db_interface.c:77:5: error: conflicting type qualifiers for 'db_active'
> >    77 | int db_active = 0;
> >       |     ^~~~~~~~~
> > In file included from /home/rxg/10.0/usr/src/sys/arch/arm/arm32/db_interface.c:59:
> > /home/rxg/10.0/usr/src/sys/ddb/db_active.h:41:18: note: previous definition of 'db_active' was here
> >    41 | static const int db_active __unused = 0;
> >       |                  ^~~~~~~~~
> > 
> > *** Failed target: db_interface.o
> > 
> > Do I miss something?
> 
> KGDB w/out DDB is probably not well tested everywhere.  Other arches
> either include db_interface.c only for ddb (e.g. i386), or, when they
> include it for both, ifdef out the db_active definition (e.g. sh3)

If so, should this page be revised?
https://www.netbsd.org/docs/kernel/kgdb.html

-rxg