(mpv-build) Fail to build on openSUSE Tumbleweed

[CtrlAltF7]

Important Information

- mpv version: git master
- Platform version: openSUSE Tumbleweed 20260610
- Meson version: 1.11.1

Reproduction Steps

Install openSUSE Tumbleweed

git clone https://github.com/mpv-player/mpv-build.git
cd mpv-build
./rebuild -j6

Expected Behavior

Successful build

Actual Behavior

After a recent system update, mpv-build began to fail with the following output:

FAILED: [code=1] libmpv.so.2.5.0.p/video_filter_vf_vapoursynth.c.o
cc -Ilibmpv.so.2.5.0.p -I. -I.. -I../include -Icommon -Ietc -Iplayer/javascript -Iplayer/lua -Isub -Ivideo/out -I/home/tofu/Software/mpv-build/build_libs/include -I/usr/include/harfbuzz -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include -I/usr/include/fribidi -I/usr/include/freetype2 -I/usr/include/libxml2 -I/usr/include/lua5.1 -I/usr/include/uchardet -I/usr/lib64/pkgconfig/../include -I/usr/include/pipewire-0.3 -I/usr/include/spa-0.2 -I/usr/include/libdrm -I/usr/include/libdisplay-info -I/usr/include/libpng16 -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/glycin-2 -I/usr/include/libseccomp -I/usr/include/libmount -I/usr/include/blkid -I/usr/include/wayland -I/usr/include/libxkbcommon -fvisibility=hidden -fdiagnostics-color=always -Wall -Winvalid-pch -Wextra -std=c11 -O3 -D_FILE_OFFSET_BITS=64 -Wdisabled-optimization -Wempty-body -Wformat -Wimplicit-fallthrough -Woverflow -Wparentheses -Wpointer-arith -Wshadow -Wundef -Wvla -Wno-cast-function-type -Wno-format-zero-length -Wno-missing-field-initializers -Wno-sign-compare -Wno-switch -Wno-unused-parameter -fno-math-errno -fno-signed-zeros -fno-trapping-math -Werror=format-security -Wno-unused-result -D_GNU_SOURCE -Wmissing-prototypes -Wstrict-prototypes -Werror=implicit-function-declaration -Wno-pointer-sign -DWINICONV_CONST= -fPIC -pthread -D_REENTRANT -fno-strict-aliasing -fno-strict-overflow -DPL_HAVE_PTHREAD -DPTHREAD_HAS_SETCLOCK -DPL_STATIC -MD -MQ libmpv.so.2.5.0.p/video_filter_vf_vapoursynth.c.o -MF libmpv.so.2.5.0.p/video_filter_vf_vapoursynth.c.o.d -o libmpv.so.2.5.0.p/video_filter_vf_vapoursynth.c.o -c ../video/filter/vf_vapoursynth.c
../video/filter/vf_vapoursynth.c:25:10: fatal error: VSScript4.h: No such file or directory
25 | #include <VSScript4.h>
| ^~~~~~~~~~~~~
compilation terminated.
[289/355] Compiling C object libmpv.so.2.5.0.p/player_lua.c.o
ninja: build stopped: subcommand failed.

/usr/include/vapoursynth/VSScript4.h exists so I'm not sure the cause of this error. This only applies to master, the release branch builds successfully.

Log File

meson-log.txt

I carefully read all instruction and confirm that I did the following:

• I tested and confirmed that the issue exists with the latest release version or newer.
• I provided all required information including system and mpv version.
• I produced the log file with the exact same set of parameters, and conditions used in "Reproduction Steps".
• I produced the log file while the behaviors described in "Actual Behavior" were actively observed.
• I attached the full, untruncated log file.

[kasper93]

/cc @llyyr

[llyyr]

This is a packaging bug with opensuse. See https://build.opensuse.org/package/show/multimedia:libs/vapoursynth#comment-2275311

Please report this to https://bugzilla.opensuse.org/ if you want it fixed. you may also remove vapoursynth from your system or disable it in your mpv-build

[kasper93]

We could accommodate python module installation, like so #18127

[CtrlAltF7]

This is a packaging bug with opensuse. See https://build.opensuse.org/package/show/multimedia:libs/vapoursynth#comment-2275311

Please report this to https://bugzilla.opensuse.org/ if you want it fixed. you may also remove vapoursynth from your system or disable it in your mpv-build

Thank you! I originally checked https://build.opensuse.org/package/show/openSUSE:Factory rather than multimedia:libs. I submitted a bug report.

@kasper93 Thank you for the PR, but unfortunately that doesn't resolve the issue for openSUSE TW. The error output is now: meson.build:792:21: ERROR: Include dir /usr/lib64/python3.13/site-packages/vapoursynth/include does not exist.

meson-log.txt

[kasper93]

@kasper93 Thank you for the PR, but unfortunately that doesn't resolve the issue for openSUSE TW. The error output is now: meson.build:792:21: ERROR: Include dir /usr/lib64/python3.13/site-packages/vapoursynth/include does not exist.

meson-log.txt

This is... unexpected. The exact path that get-include gave us doesn't exist? I've added check for that, but that's bit annoying.

Could you test latest PR? Also would be nice to show output of

pkg-config --libs --cflags vapourynth
pkg-config --libs --cflags vapourynth-script

[CtrlAltF7]

@kasper93 I tracked down the issue. openSUSE TW's package python3-vapoursynth doesn't seem to install the python module. After manually creating a virtual environment and using pip install VapourSynth, your PR resolves the issue for mpv.

Cheers!

[CtrlAltF7]

I spoke too soon. Despite builds successfully completing with the PR changes, when one attempts to use vapoursyth on openSUSE TW the following error occurs in both release and master builds: [cplayer] Option vf-add: 'vapoursynth' isn't supported.

This is reproducible by attempting to use SmoothVideo Project with mvp.

[kasper93]

Show meson log and use -Dvapoursynth=enabled to keep it enabled.

[CtrlAltF7]

I installed vapoursynth's python module by following the official instructions and am able to import it via command line, but python3 -m vapoursynth get-include fails.

The build now fails again with a new error:

Run-time dependency vapoursynth-script found: NO (tried pkg-config and cmake)
meson.build:803:18: ERROR: Dependency "vapoursynth-script" not found (tried pkg-config and cmake)

meson-log.txt

[CtrlAltF7]

@kasper93

After reinstalling vapoursynth via pip for the 3rd time while also compiling it, your PR works perfectly. Thanks again for the quick fix. Hopefully, someone updates the python3-vapoursynth package due to the bug report.