app-misc/jdupes: add missing USE flags

This change introduces several USE flags enabling support for deduplication
(enabled by default), low memory scenario handling, and compile-time hardening.

Closes: https://bugs.gentoo.org/828495
Thanks-to: Andreas Thalhammer <andreas.thalhammer@linux.com>
Signed-off-by: Jakov Petrina <jakov.petrina@sartura.hr>
Closes: https://github.com/gentoo/gentoo/pull/23223
Signed-off-by: Jakov Smolić <jsmolic@gentoo.org>

app-misc/jdupes/jdupes-1.20.2-r1.ebuild

@@ -0,0 +1,44 @@
+# Copyright 2021 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+EAPI=8
+
+inherit toolchain-funcs
+
+DESCRIPTION="Identify duplicate files on the filesystem"
+HOMEPAGE="https://github.com/jbruchon/jdupes"
+if [[ "${PV}" == *9999 ]] ; then
+	EGIT_REPO_URI="https://github.com/jbruchon/jdupes.git"
+	inherit git-r3
+else
+	SRC_URI="https://github.com/jbruchon/jdupes/archive/refs/tags/v${PV}.tar.gz -> ${P}.tar.gz"
+	KEYWORDS="~amd64"
+fi
+LICENSE="MIT"
+SLOT="0"
+
+IUSE="+dedupe lowmem hardened"
+
+# missing test.sh script
+# https://github.com/jbruchon/jdupes/issues/191
+RESTRICT="test"
+
+src_prepare() {
+	sed -i -e '/PREFIX/s/=/?=/' Makefile || die
+	default
+}
+
+src_compile() {
+	tc-export CC
+	local myconf=(
+		$(usex dedupe 'ENABLE_DEDUPE=1' '')
+		$(usex lowmem 'LOW_MEMORY=1' '')
+		$(usex hardened 'HARDEN=1' '')
+	)
+	emake ${myconf[@]}
+}
+
+src_install() {
+	emake DESTDIR="${D}" PREFIX="${EPREFIX}"/usr install
+	einstalldocs
+}

app-misc/jdupes/jdupes-9999.ebuild

@@ -17,6 +17,8 @@ fi
 LICENSE="MIT"
 SLOT="0"
 
+IUSE="+dedupe lowmem hardened"
+
 # missing test.sh script
 # https://github.com/jbruchon/jdupes/issues/191
 RESTRICT="test"
@@ -28,7 +30,12 @@ src_prepare() {
 
 src_compile() {
 	tc-export CC
-	default
+	local myconf=(
+		$(usex dedupe 'ENABLE_DEDUPE=1' '')
+		$(usex lowmem 'LOW_MEMORY=1' '')
+		$(usex hardened 'HARDEN=1' '')
+	)
+	emake ${myconf[@]}
 }
 
 src_install() {

app-misc/jdupes/metadata.xml

@@ -13,6 +13,10 @@
 		<email>proxy-maint@gentoo.org</email>
 		<name>Proxy Maintainers</name>
 	</maintainer>
+	<use>
+		<flag name="dedupe">Enable deduplication support</flag>
+		<flag name="lowmem">Enable support for low-memory operation</flag>
+	</use>
 	<upstream>
 		<remote-id type="github">jbruchon/jdupes</remote-id>
 	</upstream>