I'm having a bit of trouble knowing what to write, so I'll tell the problem
here. uname -p lists my machine as unknown but /proc/cpuinfo has AMD Sempron(tm)
Processor 3400+ .
Okay, the system is AMD64/x86-64 
glibc -2.x of any release will not make. stops at make target undefined.


Here is a copy of config.log:
This file contains any messages produced by compilers while
running configure, to aid debugging if configure makes a mistake.

It was created by GNU C Library configure (see version.h), which was
generated by GNU Autoconf 2.59.  Invocation command line was

  $ ./configure 

## --------- ##
## Platform. ##
## --------- ##

hostname = c-98-203-67-202
uname -m = x86_64
uname -r = 2.6.18-6-amd64
uname -s = Linux
uname -v = #1 SMP Wed Jan 23 06:27:23 UTC 2008

/usr/bin/uname -p = unknown
/bin/uname -X     = unknown

/bin/arch              = x86_64
/usr/bin/arch -k       = unknown
/usr/convex/getsysinfo = unknown
hostinfo               = unknown
/bin/machine           = unknown
/usr/bin/oslevel       = unknown
/bin/universe          = unknown

PATH: /usr/local/bin
PATH: /usr/bin
PATH: /bin
PATH: /usr/bin/X11
PATH: /usr/games


## ----------- ##
## Core tests. ##
## ----------- ##

configure:1400: error: you must configure in a separate build directory

## ---------------- ##
## Cache variables. ##
## ---------------- ##

ac_cv_env_CC_set=
ac_cv_env_CC_value=
ac_cv_env_CFLAGS_set=
ac_cv_env_CFLAGS_value=
ac_cv_env_CPPFLAGS_set=
ac_cv_env_CPPFLAGS_value=
ac_cv_env_CPP_set=
ac_cv_env_CPP_value=
ac_cv_env_CXXFLAGS_set=
ac_cv_env_CXXFLAGS_value=
ac_cv_env_CXX_set=
ac_cv_env_CXX_value=
ac_cv_env_LDFLAGS_set=
ac_cv_env_LDFLAGS_value=
ac_cv_env_build_alias_set=
ac_cv_env_build_alias_value=
ac_cv_env_host_alias_set=
ac_cv_env_host_alias_value=
ac_cv_env_target_alias_set=
ac_cv_env_target_alias_value=

## ----------------- ##
## Output variables. ##
## ----------------- ##

AR=''
AS=''
ASFLAGS_config=''
AUTOCONF=''
AWK=''
BASH='/bin/sh'
BISON=''
BUILD_CC=''
CC=''
CFLAGS=''
CPP=''
CPPFLAGS=''
CXX=''
CXXFLAGS=''
CXX_SYSINCLUDES=''
DEFINES=''
DEFS=''
ECHO_C=''
ECHO_N='-n'
ECHO_T=''
EGREP=''
INSTALL_DATA=''
INSTALL_INFO=''
INSTALL_PROGRAM=''
INSTALL_SCRIPT=''
KSH=''
LD=''
LDFLAGS=''
LIBGD=''
LIBOBJS=''
LIBS=''
LN_S=''
LTLIBOBJS=''
MAKE=''
MAKEINFO=''
MIG=''
MSGFMT=''
OBJDUMP=''
OBJEXT=''
PACKAGE_BUGREPORT='glibc'
PACKAGE_NAME='GNU C Library'
PACKAGE_STRING='GNU C Library (see version.h)'
PACKAGE_TARNAME='c-library'
PACKAGE_VERSION='(see version.h)'
PATH_SEPARATOR=':'
PERL=''
PWD_P=''
RANLIB=''
RELEASE=''
SED=''
SHELL='/bin/sh'
SYSINCLUDES=''
VERSION=''
VERSIONING=''
ac_ct_CC=''
ac_ct_CXX=''
ac_ct_RANLIB=''
add_on_subdirs=''
add_ons=''
all_warnings=''
base_machine=''
bindir='${exec_prefix}/bin'
bindnow=''
bounded=''
build=''
build_alias=''
build_cpu=''
build_os=''
build_vendor=''
cross_compiling='no'
datadir='${prefix}/share'
elf=''
enable_check_abi=''
exceptions=''
exec_prefix='NONE'
fno_unit_at_a_time=''
force_install=''
have_libaudit=''
have_selinux=''
host=''
host_alias=''
host_cpu=''
host_os=''
host_vendor=''
includedir='${prefix}/include'
infodir='${prefix}/info'
ldd_rewrite_script=''
libc_cv_Bgroup=''
libc_cv_as_needed=''
libc_cv_asm_protected_directive=''
libc_cv_cc_with_libunwind=''
libc_cv_forced_unwind=''
libc_cv_fpie=''
libc_cv_gcc_static_libgcc=''
libc_cv_gcc_unwind_find_fde=''
libc_cv_have_bash2=''
libc_cv_have_initfini=''
libc_cv_have_ksh=''
libc_cv_libgcc_s_suffix=''
libc_cv_localedir=''
libc_cv_rootsbindir=''
libc_cv_slibdir=''
libc_cv_ssp=''
libc_cv_sysconfdir=''
libc_cv_z_combreloc=''
libc_cv_z_execstack=''
libc_cv_z_initfirst=''
libc_cv_z_nodelete=''
libc_cv_z_nodlopen=''
libc_cv_z_relro=''
libdir='${exec_prefix}/lib'
libexecdir='${exec_prefix}/libexec'
localstatedir='${prefix}/var'
mach_interface_list=''
mandir='${prefix}/man'
no_whole_archive=''
nopic_initfini=''
old_glibc_headers=''
oldest_abi=''
oldincludedir='/usr/include'
omitfp=''
pic_default=''
prefix='NONE'
profile=''
program_transform_name='s,x,x,'
sbindir='${exec_prefix}/sbin'
shared=''
sharedstatedir='${prefix}/com'
sizeof_long_double=''
static=''
static_nss=''
subdirs=''
submachine=''
sysconfdir='${prefix}/etc'
sysdeps_add_ons=''
sysnames=''
target_alias=''
uname_release=''
uname_sysname=''
uname_version=''
use_ldconfig=''
with_cvs=''
with_fp=''
xcoff=''

## ----------- ##
## confdefs.h. ##
## ----------- ##

#define PACKAGE_BUGREPORT "glibc"
#define PACKAGE_NAME "GNU C Library"
#define PACKAGE_STRING "GNU C Library (see version.h)"
#define PACKAGE_TARNAME "c-library"
#define PACKAGE_VERSION "(see version.h)"

configure: exit 1