diff -ur percona-server-5.7.35-38.orig/storage/sphinx/Makefile.am percona-server-5.7.35-38/storage/sphinx/Makefile.am
--- percona-server-5.7.35-38.orig/storage/sphinx/Makefile.am	2016-07-19 12:42:18.000000000 +0200
+++ percona-server-5.7.35-38/storage/sphinx/Makefile.am	2021-11-24 19:47:02.552556917 +0100
@@ -31,19 +31,19 @@
 LDADD =
 
 DEFS= @DEFS@ \
-      -D_REENTRANT -D_PTHREADS -DENGINE -DSTORAGE_ENGINE -DMYSQL_SERVER
+      -D_REENTRANT -D_PTHREADS -DSTORAGE_ENGINE -DMYSQL_SERVER
 
 noinst_HEADERS =	ha_sphinx.h
 
 EXTRA_LTLIBRARIES =	ha_sphinx.la
 pkgplugin_LTLIBRARIES = @plugin_sphinx_shared_target@ sphinx.la
 
-ha_sphinx_la_LDFLAGS =	-module -rpath $(MYSQLLIBdir)
+ha_sphinx_la_LDFLAGS =	-module -avoid-version -rpath $(MYSQLLIBdir)
 ha_sphinx_la_CXXFLAGS=	$(AM_CFLAGS) -DMYSQL_DYNAMIC_PLUGIN
 ha_sphinx_la_CFLAGS =	$(AM_CFLAGS) -DMYSQL_DYNAMIC_PLUGIN
 ha_sphinx_la_SOURCES =	ha_sphinx.cc
 
-sphinx_la_LDFLAGS = -module
+sphinx_la_LDFLAGS = -module -avoid-version -rpath $(MYSQLLIBdir)
 sphinx_la_CXXFLAGS = $(AM_CFLAGS) -DMYSQL_DYNAMIC_PLUGIN
 sphinx_la_CFLAGS = $(AM_CFLAGS) -DMYSQL_DYNAMIC_PLUGIN
 sphinx_la_SOURCES = snippets_udf.cc