compiles and works fine.
PS: /opt/spacetripper-demo/spacetripperdemo should be in /usr/games/bin/
-- emerge info --
Portage 2.0.51.22-r2 (default-linux/amd64/2005.1, gcc-3.4.3, glibc-2.3.5-r0,
2.6.12-ck5 x86_64)
=================================================================
System uname: 2.6.12-ck5 x86_64 AMD Athlon(tm) 64 Processor 3000+
Gentoo Base System version 1.6.13
ccache version 2.3 [enabled]
dev-lang/python: 2.3.5
sys-apps/sandbox: 1.2.11
sys-devel/autoconf: 2.13, 2.59-r6
sys-devel/automake: 1.4_p6, 1.5, 1.6.3, 1.7.9-r1, 1.8.5-r3, 1.9.5
sys-devel/binutils: 2.15.92.0.2-r10
sys-devel/libtool: 1.5.18-r1
virtual/os-headers: 2.6.11-r2
ACCEPT_KEYWORDS="amd64"
AUTOCLEAN="yes"
CBUILD="x86_64-pc-linux-gnu"
CFLAGS="-march=athlon64 -O2 -fomit-frame-pointer -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/share/config /var/qmail/control"
CONFIG_PROTECT_MASK="/etc/gconf /etc/terminfo /etc/env.d"
CXXFLAGS="-march=athlon64 -O2 -fomit-frame-pointer -pipe"
DISTDIR="/usr/portage/distfiles"
FEATURES="autoconfig ccache distlocks sandbox sfperms strict"
GENTOO_MIRRORS="ftp://ftp.rnl.ist.utl.pt/pub/gentoo/
ftp://ftp.gentoo-pt.org/pub/gentoo/
http://www.ibiblio.org/pub/Linux/distributions/gentoo
http://distfiles.gentoo.org"
PKGDIR="/usr/portage/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY="/usr/local/portage"
SYNC="rsync://rsync.europe.gentoo.org/gentoo-portage"
USE="amd64 X aac aalib alsa amuled avi bash-completion bitmap-fonts bzip2 c++
cairo ccache clamav cpudetection crypt custom-cflags directfb dlloader dts dvd
ecc fbcon ffmpeg flac geoip gif gpm gstreamer gtk2 ipv6 ipv6arpa jpeg jpeg2k
kde latex lcms libcaca libclamav lzo mad matroska mime mozsvg mp3 mpeg mplayer
musepack nas ncurses nls nptl nptlonly nvidia oav offensive ogg oggvorbis
opengl pam perl physfs pic png python qt quicktime readline real rogue rtc sdl
smime speex sql sqlite sqlite3 ssl sysfs tcpd tga theora tidy tiff truetype
truetype-fonts unicode usb userlocales utf8 v4l v4l2 vorbis wxgtk1 xanim
xatrix xml xml2 xscreensaver xv xvid xvmc zlib userland_GNU kernel_linux
elibc_glibc"
Unset: ASFLAGS, CTARGET, LANG, LC_ALL, LDFLAGS, LINGUAS, MAKEOPTS