app-backup/blocksync-fast: new package, add 1.0.3

Signed-off-by: Marcin Koczwara <mk@nethappen.pl>

app-backup/blocksync-fast/blocksync-fast-1.0.3.ebuild

@@ -0,0 +1,30 @@
+# Copyright 1999-2023 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit autotools
+
+DESCRIPTION="Fast block device sync with digest, designed to improve block-based backups."
+HOMEPAGE="https://github.com/nethappen/blocksync-fast/"
+SRC_URI="https://github.com/nethappen/${PN}/archive/v${PV}.tar.gz -> ${P}.tar.gz"
+
+LICENSE="Apache-2.0"
+SLOT="0"
+KEYWORDS="~amd64 ~x86"
+IUSE="+xxhash"
+
+RDEPEND="
+	>=dev-libs/libgcrypt-1.9.0:0=
+	xxhash? ( >=dev-libs/xxhash-0.8 )"
+DEPEND="${RDEPEND}"
+
+src_configure() {
+	eautoreconf
+	econf $(use_with xxhash)
+}
+
+src_install() {
+	DOCS=(README.md CHANGELOG.md LICENSE scripts)
+	default_src_install
+}