problems building gcc v4.2.1

[Jeffrey Holle]

My Os is Ubuntu v7.04.

I'm attempting building gcc v4.2.1 from v4.1.2.

I'd downloaded gcc-4.2.1.bz2, uncompromising it, creating gccguild,
executing ../gcc.4.2.1/configure, and running make.

Then I get errors like:

In file included from ../../gcc-4.2.1/gcc/java/lex.c:38,
                  from ../../gcc-4.2.1/gcc/java/parse-scan.y:137:
../../gcc-4.2.1/gcc/java/keyword.h: In function 'java_keyword':
../../gcc-4.2.1/gcc/java/keyword.h:111: error: 'ELSE_TK' undeclared 
(first use in this function)
../../gcc-4.2.1/gcc/java/keyword.h:111: error: (Each undeclared 
identifier is reported only once
../../gcc-4.2.1/gcc/java/keyword.h:111: error: for each function it 
appears in.)
../../gcc-4.2.1/gcc/java/keyword.h:111: warning: missing initializer
../../gcc-4.2.1/gcc/java/keyword.h:111: warning: (near initialization 
for 'wordlist[7].token')
../../gcc-4.2.1/gcc/java/keyword.h:112: error: 'TRUE_TK' undeclared 
(first use in this function)


What is my system missing to produce such errors?