dev-util/heaptrack: Add USE=zstd

Upstream commit 4edc10044f2743e067b0387d04518b94afd602e1

Package-Manager: Portage-2.3.24, Repoman-2.3.6

dev-util/heaptrack/heaptrack-9999.ebuild

@@ -1,4 +1,4 @@
-# Copyright 1999-2017 Gentoo Foundation
+# Copyright 1999-2018 Gentoo Foundation
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=6
@@ -13,7 +13,7 @@ HOMEPAGE="http://milianw.de/blog/heaptrack-a-heap-memory-profiler-for-linux"
 LICENSE="LGPL-2.1"
 SLOT="0"
 KEYWORDS=""
-IUSE="+qt5"
+IUSE="+qt5 zstd"
 
 COMMON_DEPEND="
 	dev-libs/boost:=
@@ -33,6 +33,7 @@ COMMON_DEPEND="
 		$(add_qt_dep qtwidgets)
 		dev-libs/kdiagram:5
 	)
+	zstd? ( app-arch/zstd:= )
 "
 DEPEND="${COMMON_DEPEND}
 	$(add_frameworks_dep extra-cmake-modules)
@@ -44,6 +45,7 @@ RDEPEND="${COMMON_DEPEND}
 src_configure() {
 	local mycmakeargs=(
 		-DHEAPTRACK_BUILD_GUI=$(usex qt5)
+		$(cmake-utils_use_find_package zstd Zstd)
 	)
 
 	kde5_src_configure

dev-util/heaptrack/metadata.xml

@@ -5,4 +5,7 @@
 		<email>asturm@gentoo.org</email>
 		<name>Andreas Sturmlechner</name>
 	</maintainer>
+	<use>
+		<flag name="zstd">Enable support for ZSTD compression using <pkg>app-arch/zstd</pkg></flag>
+	</use>
 </pkgmetadata>