# Copyright 1999-2016 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2

EAPI="5"

inherit flag-o-matic eutils toolchain-funcs

if [[ ${PV} == "9999" ]] ; then
	EGIT_REPO_URI="git://git.code.sf.net/p/strace/code"
	EGIT_PROJECT="${PN}"
	inherit git-2 autotools
else
	SRC_URI="mirror://sourceforge/${PN}/${P}.tar.xz"
	KEYWORDS="*"
fi

DESCRIPTION="A useful diagnostic, instructional, and debugging tool"
HOMEPAGE="https://sourceforge.net/projects/strace/"

LICENSE="BSD"
SLOT="0"
IUSE="aio perl static unwind"

LIB_DEPEND="unwind? ( sys-libs/libunwind[static-libs(+)] )"
# strace only uses the header from libaio to decode structs
DEPEND="static? ( ${LIB_DEPEND} )
	aio? ( >=dev-libs/libaio-0.3.106 )
	sys-kernel/linux-headers"
RDEPEND="!static? ( ${LIB_DEPEND//\[static-libs(+)]} )
	perl? ( dev-lang/perl )"

src_prepare() {
	if epatch_user || [[ ! -e configure ]] ; then
		# git generation
		./xlat/gen.sh || die
		./generate_mpers_am.sh || die
		eautoreconf
		[[ ! -e CREDITS ]] && cp CREDITS{.in,}
	fi

	filter-lfs-flags # configure handles this sanely
	use static && append-ldflags -static

	export ac_cv_header_libaio_h=$(usex aio)

	# Stub out the -k test since it's known to be flaky. #545812
	sed -i '1iexit 77' tests*/strace-k.test || die
}

src_configure() {
	# Set up the default build settings, and then use the naems strace expects.
	tc-export_build_env BUILD_{CC,CPP}
	local v bv
	for v in CC CPP {C,CPP,LD}FLAGS ; do
		bv="BUILD_${v}"
		export "${v}_FOR_BUILD=${!bv}"
	done

	econf $(use_with unwind libunwind)
}

src_install() {
	default
	use perl || rm "${ED}"/usr/bin/strace-graph
	dodoc CREDITS
}