Hi,
please add ~sparc to this ebuild, as they build and work just fine:
net-p2p/rtorrent-0.4.1
net-libs/libtorrent-0.8.1
$ emerge --info
Portage 2.0.53 (default-linux/sparc/sparc64/2005.0, gcc-3.3.5-20050130,
glibc-2.3.3.20040420-r2, 2.6.12-gentoo-r6 sparc64)
=================================================================
System uname: 2.6.12-gentoo-r6 sparc64 sun4u
Gentoo Base System version 1.6.13
dev-lang/python: 2.3.5-r2, 2.4.2
sys-apps/sandbox: 1.2.12
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, 1.9.6-r1
sys-devel/binutils: 2.16.1
sys-devel/libtool: 1.5.20
virtual/os-headers: 2.4.26-r1
ACCEPT_KEYWORDS="sparc"
AUTOCLEAN="yes"
CBUILD="sparc-unknown-linux-gnu"
CFLAGS="-O3 -pipe -fomit-frame-pointer -mcpu=ultrasparc"
CHOST="sparc-unknown-linux-gnu"
CONFIG_PROTECT="/etc /usr/kde/2/share/config /usr/kde/3/share/config
/usr/share/config /var/qmail/control"
CONFIG_PROTECT_MASK="/etc/gconf /etc/terminfo /etc/env.d"
CXXFLAGS="-O3 -pipe -fomit-frame-pointer -mcpu=ultrasparc"
DISTDIR="/usr/portage/distfiles"
FEATURES="autoconfig ccache distlocks sandbox sfperms strict"
GENTOO_MIRRORS="http://distfiles.gentoo.org
http://distro.ibiblio.org/pub/linux/distributions/gentoo"
PKGDIR="/usr/portage/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
SYNC="rsync://rsync.gentoo.org/gentoo-portage"
USE="sparc arts avi berkdb bitmap-fonts bzip2 crypt cups curl dlloader encode
esd expat fbcon foomaticdb fortran gcc64 gcj gdbm gif gtk2 imlib ipv6 jpeg
libwww mad mikmod motif mpeg ncurses nls objc oggvorbis opengl oss pam pdflib
perl png python readline sdl spell ssl tcpd truetype truetype-fonts type1-fonts
udev unicode xml2 xmms xv zlib userland_GNU kernel_linux elibc_glibc"
Unset: ASFLAGS, CTARGET, LANG, LC_ALL, LDFLAGS, LINGUAS, MAKEOPTS,
PORTDIR_OVERLAY