Failed attempt to build libstdc++-v3 on irix6.5

["Billinghurst, David (CRTS)" <David dot Billinghurst at riotinto dot com>]

After seeing the recent patches to port libstdc++-v3 to irix I thought I
would give it a try on the 20001030 snapshot.

The build fails with:

/exd4/billingd/obj/gcc-parallel-v3/gcc/g++
-B/exd4/billingd/obj/gcc-parallel-v3/gcc/ -nostdinc++
-L/exd4/billingd/obj/gcc-parallel-v3/mips-sgi-irix6.5/libstd++-v3/src
-L/exd4/billingd/obj/gcc-parallel-v3/mips-sgi-irix6.5/libstd++-v3/src/.libs
-B/exd4/billingd/tmp/gcc/mips-sgi-irix6.5/bin/
-B/exd4/billingd/tmp/gcc/mips-sgi-irix6.5/lib/ -isystem
/exd4/billingd/tmp/gcc/mips-sgi-irix6.5/include
-I/exd4/billingd/src/gcc/libstdc++-v3/../gcc
-I/exd4/billingd/src/gcc/libstdc++-v3/../include
-I/exd4/billingd/src/gcc/libstdc++-v3/include/std
-I/exd4/billingd/src/gcc/libstdc++-v3/include/c
-I/exd4/billingd/src/gcc/libstdc++-v3/libsupc++
-I/exd4/billingd/src/gcc/libstdc++-v3/include -I../include -g -O2
-fno-implicit-templates -Wall -Wno-format -W -Wwrite-strings -Winline
-fdiagnostics-show-location=once -ffunction-sections -fdata-sections -g -c
/exd4/billingd/src/gcc/libstdc++-v3/libsupc++/del_op.cc   -DPIC -o
.libs/del_op.o
In file included from /exd4/billingd/src/gcc/libstdc++-v3/libsupc++/new:34,
                 from
/exd4/billingd/src/gcc/libstdc++-v3/libsupc++/del_op.cc:29:
/exd4/billingd/src/gcc/libstdc++-v3/include/std/cstddef:2:30:
bits/std_cstddef.h: No such file or directory
make[4]: *** [del_op.lo] Error 1
make[4]: Leaving directory
`/exd4/billingd/obj/gcc-parallel-v3/mips-sgi-irix6.5/libstdc++-v3/libsupc++'
make[3]: *** [all-recursive] Error 1
make[3]: Leaving directory
`/exd4/billingd/obj/gcc-parallel-v3/mips-sgi-irix6.5/libstdc++-v3'
make[2]: *** [all-recursive-am] Error 2
make[2]: Leaving directory
`/exd4/billingd/obj/gcc-parallel-v3/mips-sgi-irix6.5/libstdc++-v3'
make[1]: *** [all-target-libstdc++-v3] Error 2
make[1]: Leaving directory `/exd4/billingd/obj/gcc-parallel-v3'
make: *** [bootstrap] Error 2