typedef __WCHAR_T wchar_t big problem for UnixWare 7.1.1

[Matt Schalit <mschalit at pacbell dot net>]

I'm trying to compile the 1/27 CVS snapshot of gcc on
UnixWare 7.1.1 using cc, and gnu-make.

I get the error:


In file included from /home/matthew/Uber/CVS/objdir/gcc/include/stdio.h:19,
                 from ../../../gcc/libstdc++-v3/src/gen-num-limits.cc:52:
/home/matthew/Uber/CVS/objdir/gcc/include/sys/types.h:151: declaration does not
   declare anything

gen-num-limits failed to build, exiting.
mknumeric_limits failed to execute properly: exiting

gmake[1]: *** [configure-target-libstdc++-v3] Error 1
gmake[1]: Leaving directory `/home/matthew/Uber/CVS/objdir'
gmake: *** [bootstrap] Error 2




I saw that you folks were discussing this wrt UnixWare 7.1.0.
I appreciate your time, that's for sure, but I had trouble
deciphering a solution I could hack in to test it out.

My host is  i586-sco-sysv5uw7.1.1, and I think that this uses
the  ./gcc/config/i386/sysv5.h   file because I see this in
the configure output:

Using `../../gcc/gcc/config/i386/i386.c' to output insns.
Using `../../gcc/gcc/config/i386/i386.md' as machine description file.
Using `../../gcc/gcc/config/i386/sysv5.h' as target machine macro file.
Using the following host machine macro files:
        ../../gcc/gcc/config/xm-alloca.h
        ../../gcc/gcc/config/i386/xm-i386.h


Does this all make any sense?
Would someone please post some help for a guy who understands 
way too little about patching this?

Merci,
Matthew