From f58cbafc3d3108fcf5519f76929a1b6ce3bff21e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Maciej=20Bar=C4=87?= <xgqt@riseup.net>
Date: Tue, 19 Oct 2021 11:07:09 +0200
Subject: [PATCH] eclass/bintron.eclass: enable use of system-ffmpeg and
 system-vulkan
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Signed-off-by: Maciej Barć <xgqt@riseup.net>
---
 eclass/bintron.eclass | 26 ++++++++++++++++++++++++++
 profiles/use.desc     |  6 ++++++
 2 files changed, 32 insertions(+)
 create mode 100644 profiles/use.desc

diff --git a/eclass/bintron.eclass b/eclass/bintron.eclass
index 2abd4dc..8064d4c 100644
--- a/eclass/bintron.eclass
+++ b/eclass/bintron.eclass
@@ -111,9 +111,13 @@ BINTRON_DEPEND="
 	x11-libs/gtk+:3[X]
 	x11-libs/libxkbcommon
 	x11-libs/pango
+	system-ffmpeg? ( >=media-video/ffmpeg-4.3[chromium] )
+	system-vulkan? ( media-libs/vulkan-loader )
 "
 RDEPEND+="${BINTRON_DEPEND}"
 
+IUSE+=" +system-ffmpeg +system-vulkan "
+
 
 # The package will be already compiled,
 # also most likely the package will be pre-stripped too.
@@ -167,12 +171,34 @@ function bintron_remove_language_paks() {
 }
 
 
+# @FUNCTION: bintron_system_replace
+# @DESCRIPTION:
+# Replace bundled libraries with system libraries.
+function bintron_system_replace() {
+	if use system-ffmpeg; then
+		echo "Replacing bundled libffmpeg"
+		rm ./libffmpeg.so ||
+			die "Failed: remove bundled libffmpeg"
+		ln -s "${EROOT}"/usr/lib64/chromium/libffmpeg.so . ||
+			die "Failed: link libffmpeg"
+	fi
+	if use system-vulkan; then
+		echo "Replacing bundled libvulkan"
+		rm ./libvulkan.so.1 ||
+			die "Failed: remove bundled libvulkan"
+		ln -s "${EROOT}"/usr/lib64/libvulkan.so.1 . ||
+			die "Failed: link libvulkan"
+	fi
+}
+
+
 # @FUNCTION: bintron_src_prepare
 # @DESCRIPTION:
 # Default src_prepare.
 function bintron_src_prepare() {
 	xdg_src_prepare
 	bintron_remove_language_paks
+	bintron_system_replace
 }
 
 
diff --git a/profiles/use.desc b/profiles/use.desc
new file mode 100644
index 0000000..7e4bf38
--- /dev/null
+++ b/profiles/use.desc
@@ -0,0 +1,6 @@
+# Copyright 1999-2021 Gentoo Authors
+# Distributed under the terms of the GNU General Public License v2
+
+
+system-ffmpeg - Use the system-wide media-video/ffmpeg instead of bundled
+system-vulkan - Use the system-wide media-libs/vulkan-loader instead of bundled