Foobillard needs the -ffast-math flag filtering from the CFLAGS when compiled on AMD64, otherwise running the game gives a segmentation fault. Works perfectly when the -ffast-math flag is removed Reproducible: Always Steps to Reproduce: 1.emerge foobillard 2.foobillard 3. Actual Results: Segmentation fault Expected Results: Game starts and runs Portage 2.0.51.19 (default-linux/amd64/2005.0, gcc-3.4.3, glibc-2.3.4.20041102-r1, 2.6.11-gentoo-r11 x86_64) ================================================================= System uname: 2.6.11-gentoo-r11 x86_64 AMD Athlon(tm) 64 Processor 3200+ Gentoo Base System version 1.6.12 Python: dev-lang/python-2.3.5 [2.3.5 (#1, May 19 2005, 21:18:36)] ccache version 2.3 [enabled] dev-lang/python: 2.3.5 sys-apps/sandbox: [Not Present] sys-devel/autoconf: 2.59-r6, 2.13 sys-devel/automake: 1.9.5, 1.7.9-r1, 1.8.5-r3, 1.4_p6, 1.6.3, 1.5 sys-devel/binutils: 2.15.92.0.2-r10 sys-devel/libtool: 1.5.16 virtual/os-headers: 2.6.8.1-r4 ACCEPT_KEYWORDS="amd64" AUTOCLEAN="yes" CFLAGS="-mtune=k8 -O2 -ffast-math -mmmx -m3dnow -msse -msse2 -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/kde/2/share/config /usr/kde/3.4/env /usr/kde/3.4/share/config /usr/kde/3.4/shutdown /usr/kde/3/share/config /usr/lib/X11/xkb /usr/lib/mozilla/defaults/pref /usr/share/config /usr/share/texmf/dvipdfm/config/ /usr/share/texmf/dvips/config/ /usr/share/texmf/tex/generic/config/ /usr/share/texmf/tex/platex/config/ /usr/share/texmf/xdvi/ /var/qmail/control" CONFIG_PROTECT_MASK="/etc/gconf /etc/terminfo /etc/env.d" CXXFLAGS="-mtune=k8 -O2 -ffast-math -mmmx -m3dnow -msse -msse2 -pipe" DISTDIR="/usr/portage/distfiles" FEATURES="autoaddcvs autoconfig ccache distlocks sandbox sfperms strict" GENTOO_MIRRORS="http://distfiles.gentoo.org http://distro.ibiblio.org/pub/Linux/distributions/gentoo" MAKEOPTS="-j2" PKGDIR="/usr/portage/packages" PORTAGE_TMPDIR="/var/tmp" PORTDIR="/usr/portage" SYNC="rsync://rsync.gentoo.org/gentoo-portage" USE="amd64 X Xaw3d a52 aac aalib acl acpi alsa arts audiofile avi berkdb bitmap-fonts bonobo bzip2 cdparanoia cdr crypt cups curl dlloader doc dts dv dvd dvdr dvdread eds emacs encode esd fame ffmpeg fftw flac flash font-server foomaticdb fortran gcj gd gdbm ggi gif gphoto2 gpm graphviz gstreamer gtk gtk2 gtkhtml guile ide ieee1394 imagemagick imlib ipv6 java javascript jbig joystick jp2 jpeg jpeg2k junit justify kcal kde kdeenablefinal lesstif libwww lirc lm_sensors lzo lzw lzw-tiff mad matroska md5sum memlimit mikmod mjpeg mng motif mozilla mp3 mpeg mpi mysql mythtv ncurses network nls nptl nptlonly nvidia objc odbc ogg oggvorbis openal opengl oss pam pda pdflib perl plotutils png povray ppds python qt readline rtc ruby samba scanner sdl slang sndfile speex spell sqlite ssl svg tcltk tcpd tetex tga theora threads tiff toolbar transcode truetype truetype-fonts type1-fonts unicode usb userlocales v4l v4l2 vcd vidix visualization vorbis wmf xanim xine xml xml2 xmms xpm xprint xrandr xv xvid xvmc yv12 zlib userland_GNU kernel_linux elibc_glibc" Unset: ASFLAGS, CBUILD, CTARGET, LANG, LC_ALL, LDFLAGS, LINGUAS, PORTDIR_OVERLAY
From man gcc: <snip> This option should never be turned on by any -O option since it can result in incorrect output for programs which depend on an exact implementation of IEEE or ISO rules/specifications for math functions. </snip> Remove it from your C[XX]FLAGS...
don't use silly compiler flags, using -ffast-math globally breaks a lot of applications
*** Bug 238198 has been marked as a duplicate of this bug. ***
