tup-9999.ebuild

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# Copyright 1999-2019 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=7

inherit linux-info toolchain-funcs

DESCRIPTION="A file-based build system"
HOMEPAGE="http://gittup.org/tup"
# Tup itself is GPLv2, but it bundles differently licensed software:
# - lua: MIT
# - sqlite (unused in this ebuild): public domain
# - inih: 3-clause BSD
# - red-black tree implementation: 2-clause BSD
# - queue implementation: 3-clause BSD
LICENSE="GPL-2 MIT public-domain BSD BSD-2"
SLOT="0"

if [[ "${PV}" == 9999 ]]; then
	EGIT_REPO_URI="https://github.com/gittup/tup.git"
	inherit git-r3
else
	SRC_URI="https://github.com/gittup/tup/archive/v${PV}.tar.gz -> ${P}.tar.gz"
	KEYWORDS="~amd64"
fi

DEPEND="
	dev-db/sqlite:=
	dev-libs/libpcre:=
	sys-fs/fuse:=
"
RDEPEND="${DEPEND}"

CONFIG_CHECK="~FUSE_FS ~NAMESPACES"
WARNING_FUSE_FS="CONFIG_FUSE_FS is required for tup to work"
WARNING_NAMESPACES="CONFIG_NAMESPACES is required for tup to work as intended (workaround: set TUP_NO_NAMESPACING env var when running tup)"

src_prepare() {
	# Use our toolchain
	sed -i Tuprules.tup \
		-e "s:CC = gcc:CC = $(tc-getCC) ${CFLAGS} ${LDFLAGS}:" \
		-e "s:ar crs:$(tc-getAR) crs:"

	if [[ ${PV} != 9999 ]]; then
		# Avoid invoking `git` to find version, use ours
		sed -i src/tup/link.sh \
			-e 's;`git describe`;v'"${PV};"
	fi

	default
}

src_configure () {
	echo "CONFIG_TUP_USE_SYSTEM_SQLITE=y" >> tup.config
}

src_compile() {
	# Disabling namespacing because it leads to accessing /proc/<pid>/setgroups
	# which violates sandboxing.
	export TUP_NO_NAMESPACING=1
	./bootstrap-nofuse.sh || die
	unset TUP_NO_NAMESPACING
}

src_install() {
	dobin tup
	dolib.a libtup_client.a
	doheader tup_client.h
	doman tup.1
}

src_test() {
	[[ -e /dev/fuse ]] || die "/dev/fuse is required for tests to work"
	# tup uses fuse when tracking dependencies.
	addwrite /dev/fuse

	# Disabling namespacing because it leads to accessing /proc/<pid>/setgroups
	# which violates sandboxing.
	export TUP_NO_NAMESPACING=1

	# Skip tests which require namespacing or root privileges.
	pushd test || die
	rm -v ./*full-deps*.sh
	SKIPPED_TESTS=(
	t4069-gcc-coverage.sh
	t4072-proc-self.sh
	t4074-getpwd.sh
	t4131-proc-self-exe.sh
	t4132-proc-meminfo.sh
	t4171-dev-null.sh
	t4202-clang.sh
	t4200-ccache.sh
	t5083-symlink-fullpath.sh
	t5084-symlink-fullpath2.sh
	)
	rm ${SKIPPED_TESTS[@]} || die
	./test.sh || die
	popd || die

	unset TUP_NO_NAMESPACING
}

Thank you!