diff -U3 vapoursynth-R48.orig/Makefile.am vapoursynth-R48/Makefile.am

--- vapoursynth-R48.orig/Makefile.am	2019-10-25 09:16:07.000000000 +0300

+++ vapoursynth-R48/Makefile.am	2019-12-01 01:28:57.161837465 +0300

@@ -89,7 +89,7 @@

 pkgconfig_DATA += pc/vapoursynth.pc

-libvapoursynth_la_LDFLAGS = -no-undefined -avoid-version

+libvapoursynth_la_LDFLAGS = -no-undefined -version-info $(PACKAGE_VERSION)

 libvapoursynth_la_CPPFLAGS = $(ZIMG_CFLAGS) -DVS_PATH_PLUGINDIR='"$(PLUGINDIR)"'

 libvapoursynth_la_LIBADD = $(ZIMG_LIBS) $(DLOPENLIB) libexprfilter.la libvapoursynth_avx2.la