--- configure.in.orig
+++ configure.in
@@ -252,7 +252,7 @@ SHLIBSONAME='$(SHLIBFORLINK).$(MAJOR)'
 SHLIBFILE='$(SHLIBSONAME).$(MINOR)'
 
 SHLIBCC='$(CC) $(CFLAGS) -fpic'
-MKSHLIB_1='$(CC) $(LDFLAGS) -shared -Wl,-soname=$(SHLIBSONAME) -o'
+MKSHLIB_1='$(CC) $(LDFLAGS) -shared -Wl,-soname=$(SHLIBSONAME),-version-script=$(srcdir)/../adns.sym -o'
 MKSHLIB_2=''
 MKSHLIB_3='-lc'
 
--- /dev/null
+++ adns.sym
@@ -0,0 +1,35 @@
+{
+ global:
+adns_afterselect;
+adns_beforepoll;
+adns_beforeselect;
+adns_cancel;
+adns_check;
+adns_checkconsistency;
+adns_errabbrev;
+adns_errtypeabbrev;
+adns_finish;
+adns_firsttimeout;
+adns_forallqueries_begin;
+adns_forallqueries_next;
+adns_getaddrinfo;
+adns_globalsystemfailure;
+adns_init;
+adns_init_logfn;
+adns_init_strcfg;
+adns_processany;
+adns_processexceptional;
+adns_processreadable;
+adns_processtimeouts;
+adns_processwriteable;
+adns_rr_info;
+adns_strerror;
+adns_submit;
+adns_submit_reverse;
+adns_submit_reverse_any;
+adns_synchronous;
+adns_wait;
+adns_wait_poll;
+
+local: *;
+};