File vapoursynth-version.patch of Package vapoursynth
diff -urEbw vapoursynth-R54/Makefile.am vapoursynth-R54.new/Makefile.am
--- vapoursynth-R54/Makefile.am 2021-07-19 21:10:47.000000000 +0200
+++ vapoursynth-R54.new/Makefile.am 2021-08-16 09:18:19.604871107 +0200
@@ -80,7 +80,7 @@
pkgconfig_DATA += pc/vapoursynth.pc
-libvapoursynth_la_LDFLAGS = -no-undefined -avoid-version $(UNDEFINEDLDFLAGS)
+libvapoursynth_la_LDFLAGS = -no-undefined -release $(PACKAGE_VERSION)
libvapoursynth_la_CPPFLAGS = $(PTHREAD_CFLAGS) $(ZIMG_CFLAGS) -DVS_PATH_PLUGINDIR='"$(PLUGINDIR)"'
libvapoursynth_la_LIBADD = $(PTHREAD_LIBS) $(ZIMG_LIBS) $(DLOPENLIB) libexprfilter.la