Re: enable KGDB causes the build failure

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)

-uwe