Problem while compiling gcc2.95.2 because of bison

[Rahul Parasnis <rparasnis at clj dot co dot jp>]

I am installing gcc on HP 10.20 , I found Simmilar problems about bison, 
Is it neccessary that I have to install bison first to install GCC ? where
can I get it ? 
There is another way suggested by Tim Prince in one of his answers 
Tim>In this case, assuming you didn't alter c-parse, you could 'touch
c-parse.c' so
Tim>that ( if you are using gnu make) it will not think that file is out of
date. 

Wheather I can do this before make bootstrap ? 

I am attaching following for someone who is interested in the Log
               t='s,x,x,'; echo ar | sed -e $t ; \
            fi; \
          fi`"  "BISON=`if [ -f /opt/gcc-2.95.2/gcc/../bison/bison ] ; then
case /admdns/gcc-2.95.2/gcc in \
        /*) echo /opt/gcc-2.95.2/gcc/../bison/bison -L
/admdns/gcc-2.95.2/gcc/../bison/ ;; \
        *) echo /opt/gcc-2.95.2/gcc/../bison/bison -L
/opt/gcc-2.95.2/gcc//admdns/gcc-2.95.2/gcc/../bison/ ;; \
        esac; else echo bison ; fi`"  "BISONFLAGS="  "CFLAGS=-O2 -g"
"CLIB="  "GCC_FOR_TARGET=./xgcc -B/usr/local/hppa1.1-hp-hpux10.20/bin/ -B./
-I/usr/local/hppa1.1-hp-hpux10.20/include"  "LDFLAGS="  "LEX=`if [ -f
/opt/gcc-2.95.2/gcc/../flex/flex ] ; then echo
/opt/gcc-2.95.2/gcc/../flex/flex ; else echo flex ; fi`"  "LEXFLAGS="
"LN=ln"  "LN_S=ln -s"  "MAKEINFO=`if [ -f
/opt/gcc-2.95.2/gcc/../texinfo/makeinfo/Makefile ] ; \
        then echo /opt/gcc-2.95.2/gcc/../texinfo/makeinfo/makeinfo ; \
        else echo makeinfo ; fi`"  "MAKEINFOFLAGS="  "RANLIB_FOR_TARGET=`
if [ -f /opt/gcc-2.95.2/gcc/../binutils/ranlib ] ; then \
            echo /opt/gcc-2.95.2/gcc/../binutils/ranlib ; \
          else \
            if [ "hppa1.1-hp-hpux10.20" = "hppa1.1-hp-hpux10.20" ] ; then \
              echo ranlib; \
            else \
               t='s,x,x,'; echo ranlib | sed -e $t ; \
            fi; \
          fi`"  "RANLIB_TEST_FOR_TARGET=[ -f `  if [ -f
/opt/gcc-2.95.2/gcc/../binutils/ranlib ] ; then \
            echo /opt/gcc-2.95.2/gcc/../binutils/ranlib ; \
          else \
            if [ "hppa1.1-hp-hpux10.20" = "hppa1.1-hp-hpux10.20" ] ; then \
              echo ranlib; \
            else \
               t='s,x,x,'; echo ranlib | sed -e $t ; \
            fi; \
          fi` ]  || ( [ "hppa1.1-hp-hpux10.20" = "hppa1.1-hp-hpux10.20" ]
&& [ -f /usr/bin/ranlib -o -f /bin/ranlib ] )"  "SHELL=/bin/sh"
"STAGE_PREFIX=stage1/"  "exeext="  "build_exeext="  "objext=.o"
"exec_prefix=/usr/local"  "prefix=/usr/local"  "local_prefix=/usr/local"
"gxx_include_dir=/usr/local/lib/gcc-lib/hppa1.1-hp-hpux10.20/2.95.2/../../..
/..`echo /usr/local | sed -e 's|^/usr/local||' -e
's|/[^/]*|/..|g'`/include/g++-3"  "tooldir=/usr/local/hppa1.1-hp-hpux10.20"

"gcc_tooldir=/usr/local/lib/gcc-lib/hppa1.1-hp-hpux10.20/2.95.2/../../../../
hppa1.1-hp-hpux10.20"  "bindir=/usr/local/bin"
"libsubdir=/usr/local/lib/gcc-lib/hppa1.1-hp-hpux10.20/2.95.2"
"datadir=/usr/local/share"  "distdir=../tmp/\$(subdir)"
"localedir=/usr/local/share/locale" "CC=stage1/xgcc -Bstage1/
-B/usr/local/hppa1.1-hp-hpux10.20/bin/" "JAVA_FOR_BUILD="  "JAVAFLAGS="
"JAVA_FOR_TARGET=" ../jc1
        here=`pwd`; sdir=`cd /admdns/gcc-2.95.2/gcc/java && pwd`; if test
-f ../../bison; then bison="$here/../../bison/bison -L $sdir"; else
bison=bison; fi; \
        cd /admdns/gcc-2.95.2/gcc/java && $bison -t  --name-prefix=java_ \
            -o parse.c ./parse.y
sh[2]: bison:  not found.
*** Error exit code 127

Stop.
*** Error exit code 1

Stop.
*** Error exit code 1

Stop.
*** Error exit code 1

Stop.


Regards
- Rahul Parasnis