This ebuild works for me.

mt-st-0.9.ebuild (text/plain), 681 bytes, created by Richard Morris on 2005-08-11 10:42:37 UTC

 
# Copyright 1999-2005 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2

DESCRIPTION="Enhanced mt command for Linux, supporting Linux 2.4 ioctls"
HOMEPAGE="http://www.gnu.org/software/tar/"
SRC_URI="http://www.ibiblio.org/pub/linux/system/backup/${P}.tar.gz"

LICENSE="GPL-2"
SLOT="0"
KEYWORDS="x86 ppc sparc alpha hppa amd64 ia64 ppc64"
IUSE=""

DEPEND="virtual/libc"

src_unpack() {
        unpack ${A} || die
        cd ${S} || die
        sed -i -e "s:-O2:${CFLAGS}:g" Makefile
}

src_compile() {
        emake || die
}

src_install() {
        dosbin mt stinit || die
        doman mt.1 stinit.8
        dodoc README* stinit.def.examples
}