bison not found

[Pai, Ravindra M (Ravindra)** CTR **]

Sir,

I am trying to build GCC on a HP-UX 11 (64-bit architecture) machine.  I was
able to configure successfully.  When I try to build it I get the following
error:

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/opt/gcc # make bootstrap
No suffix list.
        make all-recursive
No suffix list.
Making all in intl
Making all in lib
Making all in makeinfo
Bootstrapping the compiler
        make CC="cc" libdir=/usr/local/lib LANGUAGES="c "
        rm -f cpp
        ln cccp cpp
        cd /opt/gcc-2.95.1/gcc; `if [ -f /opt/gcc/gcc/../bison/bison ] ;
then case /opt/gcc-2.95.1/gcc in \
        /*) echo /opt/gcc/gcc/../bison/bison -L
/opt/gcc-2.95.1/gcc/../bison/ ;; \
        *) echo /opt/gcc/gcc/../bison/bison -L
/opt/gcc/gcc//opt/gcc-2.95.1/gcc/../bison/ ;; \
        esac; else echo bison ; fi`  -d -o c-parse.c c-parse.y
sh[4]: bison:  not found.
*** Error exit code 127

Stop.
*** Error exit code 1

Stop.
*** Error exit code 1

Stop.
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rgds,

Ravi.