Building gcc on HPUX 11.00

[Eric Gilmore <ergi at rc dot rose dot hp dot com>]

I've been trying to compile gcc on an HP C110 workstation (PARISC 1.1 
architecture) on which I recently installed HPUX 11.00.  I finally got gcc 
built using the following procedure:

1) Install make 3.79.1
2) Install bison 1.28
3) Install flex 2.5.4a
4) Install binutils 2.9.1
5) Bootstrap gcc 2.95.2

Despite numerous warning during the compilation, it succeeded.  However, 
when I try to compile even a pretty basic application, I get warnings 
similar to the following:

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
In file included from /usr/include/pwd.h:99,
                  from 
/opt/gnu/lib/gcc-lib/hppa1.1-hp-hpux11.00/2.95.2/include/stdlib.h:352,
                  from foo.c:1:
/opt/gnu/lib/gcc-lib/hppa1.1-hp-hpux11.00/2.95.2/include/stdio.h:30: 
warning: `__va__list' redefined
/usr/include/pwd.h:27: warning: this is the location of the previous definition
In file included from 
/opt/gnu/lib/gcc-lib/hppa1.1-hp-hpux11.00/2.95.2/include/stdlib.h:356,
                  from foo.c:1:
/usr/include/errno.h:26: warning: `__va__list' redefined
/opt/gnu/lib/gcc-lib/hppa1.1-hp-hpux11.00/2.95.2/include/stdio.h:30: 
warning: this is the location of the previous definition
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

I haven't been able to find any information on this error.  However, in the 
process of looking, I noticed several messages in the archives stating that 
gcc 2.95.X will not work on HPUX 11.00.

What I would like to know is this: what is the latest gcc (and binutils) 
that compiles and runs on HPUX 11.00 without any major problems?  Also, is 
there anything that I need to change in my procedure for building and 
installing gcc?

Thanks,

Eric