dev-cpp/dpp: add coroutine support via USE flag

Signed-off-by: Filip Hoffmann <folosp2@gmail.com>

dev-cpp/dpp/dpp-10.0.30.ebuild

@@ -18,7 +18,7 @@ LICENSE="Apache-2.0"
 # See https://github.com/brainboxdotcc/DPP/issues/207#issuecomment-1007030157
 SLOT="0/${PV}"
 KEYWORDS="~amd64"
-IUSE="voice"
+IUSE="voice coro"
 
 RDEPEND="
 	dev-libs/openssl:=
@@ -46,6 +46,7 @@ src_configure() {
 		-DDPP_BUILD_TEST=false
 		-DDPP_NO_VCPKG=true
 		-DDPP_USE_EXTERNAL_JSON=true
+		-DDPP_CORO="$(usex coro)"
 	)
 
 	cmake_src_configure

dev-cpp/dpp/metadata.xml

@@ -10,6 +10,7 @@
 	</maintainer>
 	<use>
 		<flag name="voice">Enable voice-chat support</flag>
+		<flag name="coro">Enable coroutine support</flag>
 	</use>
 	<upstream>
 		<remote-id type="github">brainboxdotcc/dpp</remote-id>