[gentoo-amd64] grub and glibc won't build on my new install

[Randy Barlow]

Howdy! I'm trying to perform a Gentoo install in a VM (KVM), and I seem
to have a problem building grub.  It fails in the configure process like
this:

checking for i686-pc-linux-gnu-gcc... (cached) x86_64-pc-linux-gnu-gcc -m32
checking for C compiler default output file name... a.out
checking whether the C compiler works... configure: error: in
`/var/tmp/portage/sys-boot/grub-0.97-r9/work/grub-0.97':
configure: error: cannot run C compiled programs.
If you meant to cross compile, use `--host'.

I thought that was pretty odd. I also discovered that glibc won't build
correctly, with this:

make[2]: ***
[/var/tmp/portage/sys-libs/glibc-2.10.1-r1/work/build-x86-x86_64-pc-linux-gnu-nptl/sunrpc/xbootparam_prot.stmp]
Illegal instruction
make[2]: *** Waiting for unfinished jobs....
mkdir
/var/tmp/portage/sys-libs/glibc-2.10.1-r1/work/build-x86-x86_64-pc-linux-gnu-nptl/sunrpc/rpcsvc
CPP='x86_64-pc-linux-gnu-gcc -E -x c-header'
/var/tmp/portage/sys-libs/glibc-2.10.1-r1/work/build-x86-x86_64-pc-linux-gnu-nptl/elf/ld-linux.so.2
--library-path
/var/tmp/portage/sys-libs/glibc-2.10.1-r1/work/build-x86-x86_64-pc-linux-gnu-nptl:/var/tmp/portage/sys-libs/glibc-2.10.1-r1/work/build-x86-x86_64-pc-linux-gnu-nptl/math:/var/tmp/portage/sys-libs/glibc-2.10.1-r1/work/build-x86-x86_64-pc-linux-gnu-nptl/elf:/var/tmp/portage/sys-libs/glibc-2.10.1-r1/work/build-x86-x86_64-pc-linux-gnu-nptl/dlfcn:/var/tmp/portage/sys-libs/glibc-2.10.1-r1/work/build-x86-x86_64-pc-linux-gnu-nptl/nss:/var/tmp/portage/sys-libs/glibc-2.10.1-r1/work/build-x86-x86_64-pc-linux-gnu-nptl/nis:/var/tmp/portage/sys-libs/glibc-2.10.1-r1/work/build-x86-x86_64-pc-linux-gnu-nptl/rt:/var/tmp/portage/sys-libs/glibc-2.10.1-r1/work/build-x86-x86_64-pc-linux-gnu-nptl/resolv:/var/tmp/portage/sys-libs/glibc-2.10.1-r1/work/build-x86-x86_64-pc-linux-gnu-nptl/crypt:/var/tmp/portage/sys-libs/glibc-2.10.1-r1/work/build-x86-x86_64-pc-linux-gnu-nptl/nptl
/var/tmp/portage/sys-libs/glibc-2.10.1-r1/work/build-x86-x86_64-pc-linux-gnu-nptl/sunrpc/rpcgen
-Y ../scripts -h rpcsvc/bootparam_prot.x -o
/var/tmp/portage/sys-libs/glibc-2.10.1-r1/work/build-x86-x86_64-pc-linux-gnu-nptl/sunrpc/rpcsvc/bootparam_prot.T
make[2]: ***
[/var/tmp/portage/sys-libs/glibc-2.10.1-r1/work/build-x86-x86_64-pc-linux-gnu-nptl/sunrpc/rpcsvc/bootparam_prot.stmp]
Illegal instruction
make[2]: Leaving directory
`/var/tmp/portage/sys-libs/glibc-2.10.1-r1/work/glibc-2.10.1/sunrpc'
make[1]: *** [sunrpc/others] Error 2

I'm wondering what is going on. Is it a problem of 64 bit vs. 32 bit?
The dom0 is 64-bit Gentoo, and things look OK to my in my emerge --info:

(chroot) livecd / # emerge --info
Portage 2.1.6.13 (default/linux/amd64/10.0, gcc-4.3.4,
glibc-2.9_p20081201-r2, 2.6.31-gentoo-r6 x86_64)
=================================================================
System uname:
Linux-2.6.31-gentoo-r6-x86_64-QEMU_Virtual_CPU_version_0.12.1-with-gentoo-1.12.13
Timestamp of tree: Sat, 16 Jan 2010 23:00:01 +0000
app-shells/bash:     4.0_p35
dev-lang/python:     2.6.4
sys-apps/baselayout: 1.12.13
sys-apps/sandbox:    1.6-r2
sys-devel/autoconf:  2.63-r1
sys-devel/automake:  1.9.6-r2, 1.10.2
sys-devel/binutils:  2.18-r3
sys-devel/gcc-config: 1.4.1
sys-devel/libtool:   2.2.6b
virtual/os-headers:  2.6.27-r2
ACCEPT_KEYWORDS="amd64"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-O2 -pipe -fomit-frame-pointer -march=core2"
CHOST="x86_64-pc-linux-gnu"
CONFIG_PROTECT="/etc"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d
/etc/fonts/fonts.conf /etc/gconf /etc/sandbox.d /etc/terminfo
/etc/udev/rules.d"
CXXFLAGS=""
DISTDIR="/usr/portage/distfiles"
FEATURES="distlocks fixpackages parallel-fetch protect-owned sandbox
sfperms strict unmerge-orphans userfetch"
GENTOO_MIRRORS="ftp://chi-10g-1-mirror.fastsoft.net/pub/linux/gentoo/gentoo-distfiles/
"
LDFLAGS="-Wl,-O1"
LINGUAS="en en_US"
MAKEOPTS="-j3"
PKGDIR="/usr/portage/packages"
PORTAGE_CONFIGROOT="/"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times
--compress --force --whole-file --delete --stats --timeout=180
--exclude=/distfiles --exclude=/local --exclude=/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
SYNC="rsync://rsync.gentoo.org/gentoo-portage"
USE="64bit acl additions amd64 apache2 authdaemond avahi bash-completion
berkdb branding bzip2 caps cddb cdparanoia cdr cli courier cpudetection
cracklib crypt cups cxx dbus dcraw dri exif fam fortran ftp gd gdbm gpm
hal iconv id3tag imap java kpathsea mmx modules mudflap multilib mysql
ncurses netpbm nls nptl nptlonly openmp pam pcre perl php postfix
postscript ppds pppd python quotes readline reflection regex replytolist
samba sasl session slp spamassassin spl sse sse2 ssl
startup-notification subversion symlink sysfs tcpd tetex tk tokenizer
unicode unzip vditool vim-syntax xorg zip zlib" ALSA_CARDS="ali5451
als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1x ens1370 ens1371
es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident
usb-audio via82xx via82xx-modem ymfpci" ALSA_PCM_PLUGINS="adpcm alaw
asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug
ladspa lfloat linear meter mmap_emul mulaw multi null plug rate route
share shm softvol" APACHE2_MODULES="actions alias auth_basic authn_alias
authn_anon authn_dbm authn_default authn_file authz_dbm authz_default
authz_groupfile authz_host authz_owner authz_user autoindex cache dav
dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache
filter headers include info log_config logio mem_cache mime mime_magic
negotiation rewrite setenvif speling status unique_id userdir usertrack
vhost_alias" ELIBC="glibc" INPUT_DEVICES="keyboard mouse evdev"
KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216
lcdm001 mtxorb ncurses text" LINGUAS="en en_US" RUBY_TARGETS="ruby18"
USERLAND="GNU" VIDEO_CARDS="fbdev glint intel mach64 mga neomagic nv
r128 radeon savage sis tdfx trident vesa via vmware voodoo"
Unset:  CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, FFLAGS, INSTALL_MASK,
LANG, LC_ALL, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS,
PORTAGE_RSYNC_EXTRA_OPTS, PORTDIR_OVERLAY

This is very strange to me, so if anybody can give me a pointer, I'd be
very appreciative!