Part of the reason I asked is that I've been having some trouble trying to
upgrade a 1.2 to -current. The latest attempt kicked out the following
troubles:

=3D=3D=3D> libg++/libg++/src
building shared g++ library (version 4.0)
ld -x -Bshareable -Bforcearchive  -o libg++.so.4.0 libg++_pic.a
/usr/lib/c++rt0.o -lcurses
ld: /usr/lib/c++rt0.o: relocation for internal symbol expected at 0x92
ld: /usr/lib/c++rt0.o: relocation for internal symbol expected at 0x92
ld: /usr/lib/c++rt0.o: relocation for internal symbol expected at 0x92
ld: internal error: /usr/lib/c++rt0.o: claim_rrs_internal_gotslot at 0x92:
no reservation
*** Error code 1

Stop.


cc  -O2 -fno-defer-pop -msoft-float -Wall -Wstrict-prototypes -nostdinc -I.
-I../../../../arch -I..
/../../.. -undef -D__NetBSD__ -Dm68k -Dmc68000 -D_KERNEL -Dmc68020 -Dsun3
-DEXEC_AOUT -DEXEC_SCRIPT
 -DSWAPPAGER -DVNODEPAGER -DDEVPAGER -DLANCE_REVC_BUG -DFPU_EMULATE
-DHAVECACHE -DKTRACE -DDDB -DFF
S -DNFS -DCD9660 -DFDESC -DKERNFS -DNULLFS -DPROCFS -DUNION -DMFS
-DNFSSERVER -DFIFO -DINET -DTCP_C
OMPAT_42 -DNFS_BOOT_RWSIZE=3D"0x400" -DCOMPAT_SUNOS -DCOMPAT_43 -DCOMPAT_10
-DCOMPAT_11 -DCOMPAT_12 -
DUCONSOLE -DDIAGNOSTIC -DMAXUSERS=3D4  -c ../../../../kern/subr_prf.c
=2E./../../../kern/subr_prf.c: In function `panic':
=2E./../../../kern/subr_prf.c:131: warning: unknown conversion type characte=
r
`:' in format
=2E./../../../kern/subr_prf.c:131: warning: too many arguments for format

cc  -O2 -fno-defer-pop -msoft-float -Wall -Wstrict-prototypes -nostdinc -I.
-I../../../../arch -I..
/../../.. -undef -D__NetBSD__ -Dm68k -Dmc68000 -D_KERNEL -Dmc68020 -Dsun3
-DEXEC_AOUT -DEXEC_SCRIPT
 -DSWAPPAGER -DVNODEPAGER -DDEVPAGER -DLANCE_REVC_BUG -DFPU_EMULATE
-DHAVECACHE -DKTRACE -DDDB -DFF
S -DNFS -DCD9660 -DFDESC -DKERNFS -DNULLFS -DPROCFS -DUNION -DMFS
-DNFSSERVER -DFIFO -DINET -DTCP_C
OMPAT_42 -DNFS_BOOT_RWSIZE=3D"0x400" -DCOMPAT_SUNOS -DCOMPAT_43 -DCOMPAT_10
-DCOMPAT_11 -DCOMPAT_12 -
DUCONSOLE -DDIAGNOSTIC -DMAXUSERS=3D4  -c
=2E./../../../arch/m68k/m68k/m68k_machdep.c
In file included from ../../../../arch/m68k/m68k/m68k_machdep.c:39:
machine/param.h:156: syntax error before `__P'
*** Error code 1

Stop.