ebuild based on that by Justin (sorry for small caps before ;-)

lbzip2-0.23-r1.ebuild (text/plain), 1.60 KB, created by Jan Psota on 2010-03-16 01:59:34 UTC

# Copyright 1999-2010 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: /var/cvsroot/gentoo-x86/app-arch/lbzip2/lbzip2-0.23.ebuild,v 1.1 2010/03/04 07:17:27 jlec Exp $

EAPI="3"

inherit eutils flag-o-matic toolchain-funcs

DESCRIPTION="Pthreads-based parallel bzip2/bunzip2 filter, passable to GNU tar"
HOMEPAGE="http://lacos.hu/"
SRC_URI="http://lacos.web.elte.hu/pub/${PN}/${P}.tar.gz"

LICENSE="GPL-2"
SLOT="0"
KEYWORDS="~amd64 ~x86"
IUSE="+symlink test"

RDEPEND="app-arch/bzip2"
DEPEND="${REDEPEND}
	test? (
		app-shells/dash
		sys-process/time
	)"

S=${WORKDIR}/${PN}

src_prepare() {
	epatch "${FILESDIR}"/s_isreg.patch
	epatch "${FILESDIR}"/0.22-Makefile.patch
}

src_compile() {
	append-lfs-flags
	emake CC=$(tc-getCC) || die "emake failed"
}

src_test() {
	if [ -t 0 ] || return; then
		rm -rf "${T}/scratch" "${T}/results" "${T}/rnd"
		hexdump -n 10485760 /dev/urandom > "${T}/rnd"
		emake -j1 SHELL="${EPREFIX}"/bin/dash PATH="${S}:${PATH}" TESTFILE="${T}/rnd" check \
			|| die "make check failed"
	else
		ewarn "make check must be run attached to a terminal"
	fi
}

src_install() {
	dobin ${PN} || die "Installation of ${PN} failed"
	dodoc ChangeLog README || die "no docs"
	doman ${PN}.1 || die "no man"
	insinto /usr/share/${PN}
	doins corr-perf.sh malloc_trace.pl || die
}

pkg_postinst() {
	if use symlink; then
		cd /bin || die
		[ -L bzip2 -o -x bzip2.orig ] && return 0
		mv -fv bzip2{,.orig} \
			&& ln -sv ..${DESTTREE}/bin/${PN} bzip2 || die
	fi
}

pkg_prerm() {
	cd /bin || die
	if [ -L bzip2 -a -x bzip2.orig ]; then
		rm -v bzip2 && mv -v bzip2{.orig,} || die
	fi
}