app-arch/zstd: Fix automagic lz4 dep #659552

Package-Manager: Portage-2.3.41, Repoman-2.3.9

app-arch/zstd/metadata.xml

@@ -5,6 +5,11 @@
     <email>patrick@gentoo.org</email>
     <name>Patrick Lauer</name>
   </maintainer>
+  <use>
+    <flag name="lz4">
+      Enable support for LZ4 compression using <pkg>app-arch/lz4</pkg>
+    </flag>
+  </use>
   <upstream>
     <remote-id type="github">facebook/zstd</remote-id>
   </upstream>

app-arch/zstd/zstd-1.3.4-r1.ebuild

@@ -0,0 +1,60 @@
+# Copyright 1999-2018 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=6
+
+inherit toolchain-funcs
+
+DESCRIPTION="zstd fast compression library"
+HOMEPAGE="https://facebook.github.io/zstd/"
+SRC_URI="https://github.com/facebook/${PN}/archive/v${PV}.tar.gz -> ${P}.tar.gz"
+
+LICENSE="|| ( BSD GPL-2 )"
+SLOT="0/1"
+KEYWORDS="~alpha ~amd64 ~arm ~arm64 ~ia64 ~mips ~ppc ~ppc64 ~sparc ~x86"
+IUSE="lz4 static-libs"
+
+RDEPEND="app-arch/xz-utils
+	lz4? ( app-arch/lz4 )"
+DEPEND="${RDEPEND}"
+
+src_compile() {
+	emake \
+		CC="$(tc-getCC)" \
+		AR="$(tc-getAR)" \
+		HAVE_LZ4=$(usex lz4 1 0) \
+		PREFIX="${EPREFIX}/usr" \
+		LIBDIR="${EPREFIX}/usr/$(get_libdir)" zstd
+
+	emake -C lib \
+		CC="$(tc-getCC)" \
+		AR="$(tc-getAR)" \
+		PREFIX="${EPREFIX}/usr" \
+		LIBDIR="${EPREFIX}/usr/$(get_libdir)" libzstd
+
+	emake -C contrib/pzstd \
+		CC="$(tc-getCC)" \
+		CXX="$(tc-getCXX)" \
+		AR="$(tc-getAR)" \
+		PREFIX="${EPREFIX}/usr" \
+		LIBDIR="${EPREFIX}/usr/$(get_libdir)"
+
+}
+
+src_install() {
+	emake \
+		DESTDIR="${D}" \
+		PREFIX="${EPREFIX}/usr" \
+		LIBDIR="${EPREFIX}/usr/$(get_libdir)" install
+
+	emake -C contrib/pzstd \
+		DESTDIR="${D}" \
+		PREFIX="${EPREFIX}/usr" \
+		LIBDIR="${EPREFIX}/usr/$(get_libdir)" install
+
+	einstalldocs
+
+	if ! use static-libs; then
+		rm "${ED%/}"/usr/$(get_libdir)/libzstd.a || die
+	fi
+}