__link_set_add_bss() and objcopy from ELF to a.out

[Izumi Tsutsui <tsutsui%ceres.dti.ne.jp@localhost>]

Today I build a new kernel for cats, but I get the following errors:

---
/usr/tools/arm/bin/arm--netbsdelf-ld -T 
../../../../arch/cats/conf/kern.ldscript -X -o netbsd ${SYSTEM_OBJ} vers.o
text    data    bss     dec     hex     filename
3167880 431040  175740  3774660 3998c4  netbsd
/usr/tools/arm/bin/arm--netbsdelf-dbsym netbsd || true
/usr/tools/arm/bin/arm--netbsdelf-objcopy -O a.out-arm-netbsd -R .ident -R 
.arm.atpcs netbsd netbsd.aout
BFD: netbsd.aout: can not represent section `link_set_evcnts' in a.out object 
file format
/usr/tools/arm/bin/arm--netbsdelf-objcopy: netbsd.aout: Nonrepresentable 
section on output
BFD: netbsd.aout: can not represent section `link_set_evcnts' in a.out object 
file format
/usr/tools/arm/bin/arm--netbsdelf-objcopy: netbsd.aout: Nonrepresentable 
section on output
*** Error code 1

Stop.
---

It seems the problem is __link_set_add_bss() which was
added to sys/kern/subr_autoconf.c in rev 1.79.
__link_set_*() macros are defined in sys/cdefs_{aout,elf}.h
and they are different between a.out and ELF.

What is the right solution?
---
Izumi Tsutsui
tsutsui%ceres.dti.ne.jp@localhost