media-video/rav1e: Add support for the C-API

Package-Manager: Portage-2.3.96, Repoman-2.3.22
Signed-off-by: Luca Barbato <lu_zero@gentoo.org>

media-video/rav1e/metadata.xml

@@ -4,4 +4,7 @@
   <maintainer type="person">
     <email>lu_zero@gentoo.org</email>
   </maintainer>
+  <use>
+    <flag name="capi">Build the C-API library and header file</flag>
+  </use>
 </pkgmetadata>

media-video/rav1e/rav1e-9999.ebuild

@@ -1,8 +1,6 @@
-# Copyright 2017-2019 Gentoo Authors
+# Copyright 2017-2020 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
-# Auto-Generated by cargo-ebuild 0.2.0
-
 EAPI=7
 
 inherit cargo
@@ -20,11 +18,11 @@ LICENSE="BSD-2"
 SLOT="0"
 
 KEYWORDS=""
-IUSE=""
+IUSE="+capi"
 
 ASM_DEP=">=dev-lang/nasm-2.14"
 DEPEND="amd64? ( ${ASM_DEP} )"
-RDEPEND=""
+RDEPEND="capi? ( dev-util/cargo-c )"
 
 src_unpack() {
 	if [[ "${PV}" == *9999* ]]; then
@@ -32,3 +30,30 @@ src_unpack() {
 		cargo_live_src_unpack
 	fi
 }
+
+src_compile() {
+	export CARGO_HOME="${ECARGO_HOME}"
+	local args=$(usex debug "" --release)
+
+	cargo build ${args} \
+		|| die "cargo build failed"
+
+	if use capi; then
+		cargo cbuild ${args} \
+			--prefix="/usr" --libdir="/usr/$(get_libdir)" --destdir="${ED}" \
+			|| die "cargo cbuild failed"
+	fi
+}
+
+src_install() {
+	export CARGO_HOME="${ECARGO_HOME}"
+	local args=$(usex debug "" --release)
+
+	if use capi; then
+		cargo cinstall $args \
+			--prefix="/usr" --libdir="/usr/$(get_libdir)" --destdir="${ED}" \
+			|| die "cargo cinstall failed"
+	fi
+
+	cargo_src_install
+}