More problems building libstdc++-v3 on Alpha

[Richard Kenner]

I kludged around the problems that require GNU as and the next problem was
that include/bits/ctype_*.h were somehow coming from the AIX directory. 
I kludged that by manually changing the symlinks into the "generic" 
directory.

Now I get this:

/g/gcc/alpha3/gcc/g++ -B/g/gcc/alpha3/gcc/ -nostdinc++ -L/g/gcc/alpha3/alphaev56
-dec-osf4.0c/libstdc++-v3/src -L/g/gcc/alpha3/alphaev56-dec-osf4.0c/libstdc++-v3
/src/.libs -B/usr/local/alphaev56-dec-osf4.0c/bin/ -B/usr/local/alphaev56-dec-os
f4.0c/lib/ -isystem /usr/local/alphaev56-dec-osf4.0c/include -nostdinc++ -I../..
/../../egcs/libstdc++-v3/include/std -I../../../../egcs/libstdc++-v3/include/c_s
td -I../../../../egcs/libstdc++-v3/libsupc++ -I../../../../egcs/libstdc++-v3/inc
lude -I../libio -I../../../../egcs/libstdc++-v3/libio -I../../../../egcs/libstdc
++-v3/libmath -I../include -g -O2 -fno-implicit-templates -Wall -Wno-format -W -
Wwrite-strings -Winline -fdiagnostics-show-location=once -g -c ../../../../egcs/
libstdc++-v3/src/strstream.cc -o strstream.o
../../../../egcs/libstdc++-v3/src/strstream.cc:20:23: strstream.h: No such file
or directory

Why am I running into prioblems that nobody else is?