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