include libplacebo

Include libplacebo to add support `vo=gpu-next` in mpv,
as the OS-provided libplacebo may not be recent enough.

Explicitly link mpv and ffmpeg against stdc++ in case libplacebo was built with glslang,
which does not have pkg-config files.

Adjust the update script to also checkout git submodules as well,
which is needed for libplacebo.

1 files changed, 1 insertions, 0 deletions

diff --git a/clean b/clean
index 6cd8f61..320c01f 100755
--- a/clean
+++ b/clean
@@ -4,5 +4,6 @@ export LC_ALL=C
 scripts/ffmpeg-clean
 scripts/fribidi-clean
 scripts/libass-clean
+scripts/libplacebo-clean
 scripts/mpv-clean
 rm -rf build_libs