请教关于GCC的安装？

我安装REDHAT的时候没有安装GCC，现在下栽了一个，用TAR解包，
然后用./configure --prefix=/usr/bin/gcc
结果是
Config.guess failed to determine the host type.  You need to specify one.
Usage: configure [OPTIONS] [HOST]

Options: [defaults in brackets]
--prefix=MYDIR          install into MYDIR [/usr/local]
--exec-prefix=MYDIR     install host-dependent files into MYDIR [/usr/local]
--help                  print this message [normal config]
--build=BUILD           configure for building on BUILD [BUILD=HOST]
--host=HOST             configure for HOST [determined via config.guess]
--norecursion           configure this directory only [recurse]
--program-prefix=FOO    prepend FOO to installed program names [""]
--program-suffix=FOO    append FOO to installed program names [""]
--program-transform-name=P transform installed names by sed pattern P [""]
--site=SITE             configure with site-specific makefile for SITE
--srcdir=DIR            find the sources in DIR [. or ..]
--target=TARGET         configure for TARGET [TARGET=HOST]
--tmpdir=TMPDIR         create temporary files in TMPDIR [/tmp]
--nfp                   configure for software floating point [hard float]
--with-FOO, --with-FOO=BAR package FOO is available (parameter BAR)
--without-FOO           package FOO is NOT available
--enable-FOO, --enable-FOO=BAR include feature FOO (parameter BAR)
--disable-FOO           do not include feature FOO

Where HOST and TARGET are something like "sparc-sunos", "mips-sgi-irix5", etc.
没安装好，请问为什么？　　　　　　

应该用X86的吧~~~~~~~~~~~~~~~~~