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# Copyright 1999-2021 Gentoo Authors
# Distributed under the terms of the GNU General Public License v2

EAPI=7

PYTHON_COMPAT=( python3_{8,9} )

inherit cmake check-reqs python-single-r1 flag-o-matic

DESCRIPTION="A fast very high compression read-only FUSE file system"
HOMEPAGE="https://github.com/mhx/dwarfs"

SRC_URI="https://github.com/mhx/dwarfs/releases/download/v${PV}/${P}.tar.bz2"

LICENSE="GPL-3"
SLOT="0"
KEYWORDS=""

IUSE="python +jemalloc test"
RESTRICT="!test? ( test )"
REQUIRED_USE="python? ( ${PYTHON_REQUIRED_USE} )"

DEPEND="sys-devel/flex"
RDEPEND="${PYTHON_DEPS}
		dev-libs/boost[context,threads,python?]
		dev-libs/double-conversion
		dev-libs/libfmt
		dev-libs/libevent
		dev-libs/xxhash
		jemalloc? ( >=dev-libs/jemalloc-5.2.1 )
		app-arch/libarchive
		app-arch/zstd
		app-arch/lz4
		app-arch/xz-utils
		app-arch/snappy
		dev-cpp/sparsehash
		dev-cpp/gflags
		dev-cpp/glog[gflags]
		sys-fs/fuse:3
		sys-libs/binutils-libs
		sys-libs/zlib
		sys-libs/libunwind
		!dev-cpp/folly"
BDEPEND="app-text/ronn
		test? ( dev-cpp/gtest )
		dev-util/cmake
		sys-apps/sed
		sys-devel/bison
		virtual/pkgconfig"

CHECKREQS_DISK_BUILD="1300M"

DOCS=( "README.md" "CHANGES.md" "TODO" )

CMAKE_IN_SOURCE_BUILD=1
CMAKE_WARN_UNUSED_CLI=0

src_prepare(){
	cmake_src_prepare
	einfo "setting library path to $(get_libdir)"
	sed "s/DESTINATION lib/DESTINATION $(get_libdir)/" -i CMakeLists.txt || die
}

src_configure(){
	append-flags "-fPIC"
	einfo "setting configuration flags to:"
	mycmakeargs=(
		-DUSE_JEMALLOC=$(usex jemalloc ON OFF)
		-DWITH_PYTHON=$(usex python ON OFF)
		-DWITH_TESTS=$(usex test ON OFF)
		-DPREFER_SYSTEM_ZSTD=1
		-DPREFER_SYSTEM_XXHASH=1
		-DPREFER_SYSTEM_GTEST=1
		-DWITH_LEGACY_FUSE=0
	)
	if use python; then mycmakeargs+=( -DWITH_PYTHON_VERSION=${EPYTHON#python} ); fi
	einfo ${mycmakeargs}
	cmake_src_configure
}

src_install(){
	cmake_src_install
	dolib.so libmetadata_thrift.so libthrift_light.so libdwarfs.so libfsst.so
	dolib.so folly/libfolly.so.0.58.0-dev folly/libfolly.so
}

pkg_postinst(){
	elog "Suggest to enable USE 'threads' globally if you have multicore machine"
	elog "Since version 0.4.1 GGC builds has been fixed. Now both Clang and GCC are working very well"
	elog "You may find more information in the"
	elog "${HOMEPAGE}"
	elog "About creating: ${HOMEPAGE}/blob/main/doc/mkdwarfs.md"
	elog "About mounting: ${HOMEPAGE}/blob/main/doc/dwarfs.md"
}