-# librrd_la_LIBADD = $(RRD_LIBS)
-
-# This flag accepts an argument of the form current[:revision[:age]]. So,
-# passing -version-info 3:12:1 sets current to 3, revision to 12, and age to 1.
-#
-# If either revision or age are omitted, they default to 0. Also note that
-# age must be less than or equal to the current interface number.
-#
-# Here are a set of rules to help you update your library version information:
-#
-# 1. Start with version information of 0:0:0 for each libtool library.
-#
-# 2. Update the version information only immediately before a public
-# release of your software. More frequent updates are unnecessary, and
-# only guarantee that the current interface number gets larger faster.
-#
-# 3. If the library source code has changed at all since the last update,
-# then increment revision (c:r:a becomes c:r+1:a).
-#
-# 4. If any interfaces have been added, removed, or changed since the last
-# update, increment current, and set revision to 0.
-#
-# 5. If any interfaces have been added since the last public release, then
-# increment age.
-#
-# 6. If any interfaces have been removed since the last public release,
-# then set age to 0.
-#
-# Never try to set the interface numbers so that they correspond to the
-# release number of your package. This is an abuse that only fosters
-# misunderstanding of the purpose of library versions. Instead, use the
-# -release flag (see Release numbers), but be warned that every release of
-# your package will not be binary compatible with any other release.
-#
-# see http://www.gnu.org/software/libtool/manual.html#SEC32 for explanation
-librrd_la_LDFLAGS = -version-info 2:1:0
-
-librrd_th_la_SOURCES = $(RRD_C_FILES) rrd_thread_safe.c
-librrd_th_la_CFLAGS = $(MULTITHREAD_CFLAGS)
-librrd_th_la_LDFLAGS = $(MULTITHREAD_LDFLAGS) -version-info 2:1:0
+librrd_th_la_SOURCES = $(UPD_C_FILES) $(RRD_C_FILES) rrd_thread_safe.c
+librrd_th_la_DEPENDENCIES = librrd.sym
+librrd_th_la_CFLAGS = $(AM_CFLAGS) $(MULTITHREAD_CFLAGS)
+librrd_th_la_LDFLAGS = $(MULTITHREAD_LDFLAGS) -version-info @LIBVERS@
+librrd_th_la_LDFLAGS += -export-symbols librrd.sym
+librrd_th_la_LIBADD = $(ALL_LIBS) $(LIBINTL)