kqemu does not build if -ftracer is in CFLAGS. Reproducible: Always Steps to Reproduce: 1. Set CFLAGS="-Os -march=pentium-m -ftracer -pipe" 2. emerge --oneshot kqemu 3. Does not compile Actual Results: i686-pc-linux-gnu-gcc -Wall -O2 -fomit-frame-pointer -fno-strict-aliasing -Os -march=pentium-m -ftracer -pipe -Wall -O2 -fomit-frame-pointer -fno-strict-aliasing -fno-stack-protector -Os -march=pentium-m -ftracer -pipe -Wall -O2 -fomit-frame-pointer -fno-strict-aliasing -Os -march=pentium-m -ftracer -pipe -Wall -O2 -fomit-frame-pointer -fno-strict-aliasing -D__KERNEL__ -nostdinc -iwithprefix include -I. -I.. -c -o interp.o interp.c interp.c: Assembler messages: interp.c:4990: Error: symbol `insn_1fe' is already defined interp.c:4991: Error: symbol `insn_1fd' is already defined interp.c:4992: Error: symbol `insn_1fc' is already defined interp.c:4993: Error: symbol `insn_1fb' is already defined interp.c:4994: Error: symbol `insn_1fa' is already defined and many more errors looking exactly like above. Expected Results: 1. Remove -ftracer from CFLAGS 2. emerge --oneshot kqemu 3. success! emerge --info Portage 2.1.6.9 (default/linux/x86/2008.0, gcc-4.3.3, glibc-2.9_p20081201-r2, 2.6.28.1 i686) ================================================================= System uname: Linux-2.6.28.1-i686-Intel-R-_Pentium-R-_M_processor_1.60GHz-with-glibc2.0 Timestamp of tree: Thu, 26 Mar 2009 07:00:01 +0000 app-shells/bash: 4.0_p10-r1 dev-java/java-config: 1.3.7-r1, 2.1.7 dev-lang/python: 2.5.4-r2 dev-util/cmake: 2.6.2-r1 sys-apps/baselayout: 2.0.0 sys-apps/openrc: 0.4.3-r1 sys-apps/sandbox: 1.6 sys-devel/autoconf: 2.13, 2.63 sys-devel/automake: 1.4_p6, 1.5, 1.9.6-r2, 1.10.2 sys-devel/binutils: 2.19.1-r1 sys-devel/gcc-config: 1.4.1 sys-devel/libtool: 2.2.6a virtual/os-headers: 2.6.28-r1 ACCEPT_KEYWORDS="x86 ~x86" CBUILD="i686-pc-linux-gnu" CFLAGS="-Os -march=pentium-m -pipe" CHOST="i686-pc-linux-gnu" CONFIG_PROTECT="/etc" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/env.d/java/ /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo /etc/texmf/language.dat.d /etc/texmf/language.def.d /etc/texmf/updmap.d /etc/texmf/web2c /etc/udev/rules.d" CXXFLAGS="-Os -march=pentium-m -pipe" DISTDIR="/usr/portage/distfiles" FEATURES="distlocks fixpackages parallel-fetch protect-owned sandbox sfperms strict unmerge-orphans userfetch" GENTOO_MIRRORS="ftp:///ftp-stud.fht-esslingen.de/pub/Mirrors/gentoo/ http://mirror.datapipe.net/gentoo http://mirror.clarkson.edu/pub/distributions/gentoo/ http://mirrors.tds.net/gentoo" LDFLAGS="-Wl,-O1" LINGUAS="en fr de ja zh_TW zh" MAKEOPTS="-j2" 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" PORTDIR_OVERLAY="/usr/portage/local/layman/enlightenment /usr/portage/local/layman/gentoo-taiwan /usr/portage/local/layman/sunrise /usr/portage/local/layman/pro-audio /usr/portage/local/layman/science" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="7zip X a52 aac aalib acpi aim alsa asf ass bash-completion bcmath bidi bitmap-fonts blender-game bzip2 cairo canna cdparanoia cdr chardet cjk console crypt css cxx dga djvu dlloader dri dv dvd dvdread effects enca encode exif fbcon ffmpeg firefox flac ftp gdbm gif gimp glx gnutls gphoto2 gpm graphviz gs gtk hdri iceweasel iconv imagemagick imap imlib inkjar java javascript jpeg kqemu latex libcaca libwww lua lzo mad maildir matroska mbox mbrola menubar mikmod mime mmx mmxext mng motif mozilla moznocompose moznoirc moznomail mozsvg mp3 mpeg msn musepack ncurses nethack network nls no-old-linux nptl nptlonly nsplugin offensive ogg oggvorbis opengl oscar pcmcia pdf perl plotutils plugin png pnp posix postscript python q32 qemu-fast quicktime readline restrict-javascript rtc sbcl sdk sdl sftp simplexml smime smtp soap softmmu sox spell sse sse2 ssl stroke subtitles svg svgz tcpd tetex tiff timidity toolbar truetype truetype-fonts type1-fonts unicode userlocales uudeview vcd vdr vim vim-pager vim-syntax vorbis wavpack webdav-neon wifi win32codecs wmf wxwindows x264 x86 xanim xcomposite xforms xine xinetd xml xorg xpm xrandr xulrunner xv xvid xvmc zh_TW zlib" ALSA_CARDS="intel8x0m 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" 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" CAMERAS="canon sony_dscf1 sony_dscf55 template directory" ELIBC="glibc" INPUT_DEVICES="keyboard mouse joystick" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LINGUAS="en fr de ja zh_TW zh" USERLAND="GNU" VIDEO_CARDS="radeon vesa fbdev" Unset: CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, FFLAGS, INSTALL_MASK, LANG, LC_ALL, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS
Sorry for so late reply. Pushed as: > 21 Jan 2012; Sergei Trofimovich <slyfox@gentoo.org> > kqemu-1.4.0_pre1-r1.ebuild: > Filter -ftracer out (bug #263837 by Willie Wong). Yeah, looks like -ftracer is fundamentally incompatible with code injecting global labels hidden in asm inline code. Filtered flag out. Thanks for the report!
