It seems that configure changes CFLAGS between successive instances on recursive configuration: ... configure: configuring in testsuite configure: running /bin/sh '../.././gdb/testsuite/configure' --prefix=/usr '--cache-file=./config.cache' '--build=x86_64-pc-linux-gnu' '--host=x86_64-pc-linux-gnu' '--target=x86_64-pc-linux-gnu' '--prefix=/usr' '--mandir=/usr/share/man' '--infodir=/usr/share/info' '--datadir=/usr/share' '--sysconfdir=/etc' '--localstatedir=/var/lib' '--disable-werror' '--enable-nls' '--enable-gdbtk' '--disable-tui' '--datadir=/usr/share/insight' '--libdir=/usr/lib64' '--program-transform-name=s,y,y,' '--srcdir=.././gdb' 'CC=gcc' 'CFLAGS=-march=athlon64 -O2 -pipe -fno-strict-aliasing' 'LDFLAGS=' 'build_alias=x86_64-pc-linux-gnu' 'host_alias=x86_64-pc-linux-gnu' 'target_alias=x86_64-pc-linux-gnu' --cache-file=.././config.cache --srcdir=../.././gdb/testsuite configure: loading cache .././config.cache configure: error: `CFLAGS' has changed since the previous run: configure: former value: -march=athlon64 -O2 -pipe -fno-strict-aliasing configure: current value: -march=athlon64 -O2 -pipe -fno-strict-aliasing configure: error: changes in the environment can compromise the build configure: error: run `make distclean' and/or `rm .././config.cache' and start over configure: error: /bin/sh '../.././gdb/testsuite/configure' failed for testsuite make[1]: *** [configure-gdb] Error 1 make[1]: Leaving directory `/var/tmp/portage/dev-util/insight-6.6/work/insight-6.6' make: *** [all] Error 2 # emerge --info Portage 2.1.2.3 (default-linux/amd64/2006.1, gcc-4.1.2, glibc-2.5-r1, 2.6.20-gentoo-r5 x86_64) ================================================================= System uname: 2.6.20-gentoo-r5 x86_64 AMD Athlon(tm) 64 Processor 3500+ Gentoo Base System release 1.12.10 Timestamp of tree: Tue, 10 Apr 2007 15:50:01 +0000 distcc 2.18.3 x86_64-pc-linux-gnu (protocols 1 and 2) (default port 3632) [disabled] ccache version 2.4 [disabled] dev-java/java-config: 1.3.7, 2.0.31-r5 dev-lang/python: 2.4.4 dev-python/pycrypto: 2.0.1-r5 dev-util/ccache: 2.4-r6 sys-apps/sandbox: 1.2.18.1 sys-devel/autoconf: 2.13, 2.61 sys-devel/automake: 1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2, 1.10 sys-devel/binutils: 2.17 sys-devel/gcc-config: 1.3.15-r1 sys-devel/libtool: 1.5.23b virtual/os-headers: 2.6.20-r2 ACCEPT_KEYWORDS="amd64 ~amd64" AUTOCLEAN="yes" CBUILD="x86_64-pc-linux-gnu" CFLAGS=" -march=athlon64 -O2 -pipe " CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /opt/jetty/etc /usr/kde/3.5/env /usr/kde/3.5/share/config /usr/kde/3.5/shutdown /usr/share/X11/xkb /usr/share/config /var/bind" CONFIG_PROTECT_MASK="/etc/env.d /etc/env.d/java/ /etc/gconf /etc/java-config/vms/ /etc/php/apache1-php5/ext-active/ /etc/php/apache2-php5/ext-active/ /etc/php/cgi-php5/ext-active/ /etc/php/cli-php5/ext-active/ /etc/revdep-rebuild /etc/splash /etc/terminfo /etc/texmf/web2c" CXXFLAGS=" -march=athlon64 -O2 -pipe " DISTDIR="/home/ftp/distfiles" EMERGE_DEFAULT_OPTS="--with-bdeps y" FEATURES="collision-protect cvs distlocks elog java-strict metadata-transfer multilib-strict sandbox sfperms sign strict stricter userfetch userpriv" GENTOO_MIRRORS="http://mirror.switch.ch/ftp/mirror/gentoo/ ftp://mirror.switch.ch/mirror/gentoo/ " LANG="it_IT.utf8" LINGUAS="it" PKGDIR="/home/ftp/packages" PORTAGE_COMPRESS="bzip2" PORTAGE_COMPRESS_FLAGS="-9" PORTAGE_RSYNC_EXTRA_OPTS=" --timeout=400 --progress " PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --delete-after --stats --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages --filter=H_**/files/digest-*" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" PORTDIR_OVERLAY="/usr/local/overlays/portage" SYNC="rsync://rsync.europe.gentoo.org/gentoo-portage" USE="3ds 7zip X a52 aac acl acpi alsa amd64 amr aoss apache2 arts asf audiofile avahi bash-completion berkdb bitmap-fonts bl bzip2 cairo cal3d caps ccache cdb cddb cdparanoia cdr cg chroot cli cpudetection cracklib crypt css cups curl dba dbus devhelp dga directfb djvu dlloader dmi dovecot-sasl dri dts dv dvd dvdr dvdread dynagraph emerald encode epydoc erandom esd exif expat extrafilters fame ffmpeg firefox flac fltk foomaticdb gd gdbm ggi gif gimp gimpprint glib glibc-omitfp glitz glut gmp gnokii gnome gnutls gphoto2 gpm graphviz gsm gtk gtkhtml guile hal howl-compat iconv idn ieee1394 imagemagick imlib ipv6 isdnlog ithreads java javacomm javascript jbig jikes jpeg jpeg2k justify kde kdeenablefinal kdehiddenvisibility kqemu lcms ldap libcaca libg++ libnotify linuxthreads-tls lm_sensors logitech-mouse logrotate lzo mad mailwrapper matroska mbox mdb mhash midi mikmod mjpeg mmap mng motif mozdevelop mozsvg mp3 mpeg mpm-worker msn musepack musicbrainz mysql ncurses nfs nls nptl nptlonly nsplugin numeric nvidia odbc ode offensive ogg ogre on-the-fly-crypt openexr opengl oss pam pch pcre pdf perl php png povray ppds pppd pulseaudio python qa qt3 qt3support qt4 quicktime rdesktop readline reflection resolvconf resolveconf restrict-javascript rtc samba scanner sdl session slang smime smp sndfile snmp speex spell spl ssl startup-notification subversion svg sysfs syslog tcltk tcpd test tetex tga theora threads tidy tiff timidity tk truetype truetype-fonts type1-fonts unicode usb userlocales utempter v4l v4l2 vcd vda vorbis vorbis-psy wma wmf wmp xcomposite xforms xine xinerama xml xorg xpm xscreensaver xv xvid xvmc yv12 zeroconf zlib" ALSA_CARDS="intel8x0" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mulaw multi null plug rate route share shm softvol" ELIBC="glibc" FOO2ZJS_DEVICES="hp1005" INPUT_DEVICES="mouse evdev keyboard" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="it" USERLAND="GNU" VIDEO_CARDS="nvidia nv" Unset: CTARGET, INSTALL_MASK, LC_ALL, LDFLAGS, MAKEOPT
Remove the redundant spaces from your C[XX]FLAGS. *** This bug has been marked as a duplicate of bug 106513 ***
