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# Copyright 1999-2018 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI="6"

inherit autotools elisp-common flag-o-matic multilib-minimal toolchain-funcs

DESCRIPTION="Google's Protocol Buffers - Extensible mechanism for serializing structured data"
HOMEPAGE="https://developers.google.com/protocol-buffers/ https://github.com/protocolbuffers/protobuf"
SRC_URI="https://github.com/protocolbuffers/${PN}/archive/v${PV}.tar.gz -> ${P}.tar.gz"

LICENSE="BSD"
SLOT="0/17"
KEYWORDS="alpha amd64 arm arm64 hppa ia64 ~mips ppc ppc64 s390 ~sh sparc x86 ~amd64-linux ~x86-linux ~x64-macos ~x86-macos"
IUSE="emacs examples static-libs test zlib"

RDEPEND="emacs? ( virtual/emacs )
	zlib? ( sys-libs/zlib[${MULTILIB_USEDEP}] )"
DEPEND="${RDEPEND}
	test? ( >=dev-cpp/gtest-1.8.0[${MULTILIB_USEDEP}] )"

PATCHES=(
	"${FILESDIR}/${PN}-3.6.0-disable_no-warning-test.patch"
	"${FILESDIR}/${PN}-3.6.0-system_libraries.patch"
	"${FILESDIR}/${PN}-3.6.0-protoc_input_output_files.patch"
	"${FILESDIR}/${PN}-3.6.1-libatomic_linking.patch"
)

DOCS=(CHANGES.txt CONTRIBUTORS.txt README.md)

src_prepare() {
	default
	eautoreconf
}

src_configure() {
	append-cppflags -DGOOGLE_PROTOBUF_NO_RTTI
	multilib-minimal_src_configure
}

multilib_src_configure() {
	local options=(
		$(use_enable static-libs static)
		$(use_with zlib)
	)

	if tc-is-cross-compiler; then
		# Build system uses protoc when building, so protoc copy runnable on host is needed.
		mkdir -p "${WORKDIR}/build" || die
		pushd "${WORKDIR}/build" > /dev/null || die
		ECONF_SOURCE="${S}" econf_build "${options[@]}"
		options+=(--with-protoc="$(pwd)/src/protoc")
		popd > /dev/null || die
	fi

	ECONF_SOURCE="${S}" econf "${options[@]}"
}

src_compile() {
	multilib-minimal_src_compile

	if use emacs; then
		elisp-compile editors/protobuf-mode.el
	fi
}

multilib_src_compile() {
	if tc-is-cross-compiler; then
		emake -C "${WORKDIR}/build/src" protoc
	fi

	default
}

multilib_src_test() {
	emake check
}

multilib_src_install_all() {
	find "${D}" -name "*.la" -delete || die

	insinto /usr/share/vim/vimfiles/syntax
	doins editors/proto.vim
	insinto /usr/share/vim/vimfiles/ftdetect
	doins "${FILESDIR}/proto.vim"

	if use emacs; then
		elisp-install ${PN} editors/protobuf-mode.el*
		elisp-site-file-install "${FILESDIR}/70${PN}-gentoo.el"
	fi

	if use examples; then
		DOCS+=(examples)
		docompress -x /usr/share/doc/${PF}/examples
	fi

	einstalldocs
}

pkg_postinst() {
	use emacs && elisp-site-regen
}

pkg_postrm() {
	use emacs && elisp-site-regen
}