[Xen-users] [SPAM] xen 4.0.0 compilation fails in function cpuid

[mike dye <mike@xxxxxxxxxxxxx>]

I am using gentoo as a hypervisor and dom0.  I've successfully built a 
32bit 2.6.34 dom0 kernel and installed gentoo's xen 4.0.0 package. 
However, compilation of the xen-tools package fails:
xen-detect.c: In function 'cpuid':
xen-detect.c:43: error: can't find a register in class 'BREG' while 
reloading 'asm'
xen-detect.c:43: error: 'asm' operand has impossible constraints

The outcome is the same when I attempt to build from the official xen 
4.0.0 hypervisor and tools source distribution (xen-4.0.0.tar.gz from 
xen.org).
I have had success building this in a different, but similar, gentoo 
environment, so I assume there is something amiss with my toolchain or 
the gcc options I'm using.  Any pointers toward a fix would be 
appreciated. Thanks.

-mike d.

P.S.  I've heard that the "hardened" use flag I've got enabled can cause 
problems so I'm removing it and rebuilding tonight.
Configuration:
emerge --info xen-tools
Portage 2.1.8.3 (default/linux/x86/10.0, gcc-4.3.4, glibc-2.11.2-r0, 
2.6.34-xen i686)
=================================================================
                        System Settings
=================================================================
System uname: 
Linux-2.6.34-xen-i686-Intel-R-_Core-TM-2_Quad_CPU_@xxxxxxxxxxxxxxxxxxxxxxxxxxxx
Timestamp of tree: Sat, 10 Jul 2010 21:45:02 +0000
distcc 3.1 i686-pc-linux-gnu [disabled]
ccache version 2.4 [disabled]
app-shells/bash:     4.0_p37
dev-java/java-config: 2.1.10
dev-lang/python:     2.6.4-r1, 3.1.2-r3
dev-util/ccache:     2.4-r7
sys-apps/baselayout: 1.12.13
sys-apps/sandbox:    1.6-r2
sys-devel/autoconf:  2.65
sys-devel/automake:  1.11.1
sys-devel/binutils:  2.20.1-r1
sys-devel/gcc:       4.3.4, 4.4.3-r2
sys-devel/gcc-config: 1.4.1
sys-devel/libtool:   2.2.6b
virtual/os-headers:  2.6.30-r1
ACCEPT_KEYWORDS="x86"
ACCEPT_LICENSE="*"
CBUILD="i686-pc-linux-gnu"
CFLAGS="-march=prescott -O2 -pipe -fomit-frame-pointer 
-mno-tls-direct-seg-refs"
CHOST="i686-pc-linux-gnu"
CONFIG_PROTECT="/etc /var/bind"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d 
/etc/env.d/java/ /etc/fonts/fonts.conf /etc/gconf /etc/revdep-rebuild 
/etc/sandbox.d /etc/terminfo"
CXXFLAGS="-march=prescott -O2 -pipe -fomit-frame-pointer 
-mno-tls-direct-seg-refs"
DISTDIR="/usr/portage/distfiles"
FEATURES="assume-digests distlocks fixpackages news parallel-fetch 
protect-owned sandbox sfperms strict unmerge-logs unmerge-orphans userfetch"
GENTOO_MIRRORS="http://gentoo.cites.uiuc.edu/pub/gentoo";
LDFLAGS="-Wl,-O1"
MAKEOPTS="-j5"
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://rsync7.us.gentoo.org/gentoo-portage"
USE="acl acpi apache2 avahi avi bash-completion berkdb bzip2 cdr clamav 
cli cracklib crypt cups curl curlwrappers cxx dbus dri encode exif fame 
fortran fuse gdbm gnutls gpm hal hardened hardenedphp iconv ieee1394 
imagemagick imap imlib innodb java java6 javascript libwww lzo mad 
maildir mmap mmx modules mpi mudflap mysql ncurses nls nptl nptlonly 
odbc opengl openmp pam pcre pdf perl php posix pppd python readline 
reflection resolvconf ruby samba sasl session sharedmem simplexml soap 
sockets source spell spl sse sse2 ssl svga sysfs tcl tcltk tcpd tetex 
threads tiff tk tokenizer truetype unicode usb verbose vhosts vimsyntax 
winbind x86 xml xmlrpc xorg xvmc zlib" ALSA_CARDS="ali5451 als4000 
atiixp atiixp-modem bt87x ca0106 cmipci emu10k1 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 
synaptics" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk 
hd44780 lb216 lcdm001 mtxorb ncurses text" RUBY_TARGETS="ruby18" 
USERLAND="GNU" VIDEO_CARDS="ati" XTABLES_ADDONS="quota2 psd pknock lscan 
length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit 
sysrq steal rawnat logmark ipmark dhcpmac delude chaos account"
Unset:  CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, FFLAGS, INSTALL_MASK, 
LANG, LC_ALL, LINGUAS, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, 
PORTAGE_RSYNC_EXTRA_OPTS, PORTDIR_OVERLAY
=================================================================
                        Package Settings
=================================================================

app-emulation/xen-tools-4.0.0 was built with the following:
USE="api debug flask ioemu screen -acm -custom-cflags -doc -hvm -pygrub"
CFLAGS="-fno-strict-overflow"
CXXFLAGS="-march=prescott -O2 -pipe -fomit-frame-pointer 
-mno-tls-direct-seg-refs -fno-strict-overflow"
LDFLAGS=""

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