diff --git a/configure.ac b/configure.ac
index 901a3d6..35b08f1 100644
--- a/configure.ac
+++ b/configure.ac
@@ -45,6 +45,16 @@ AC_COMPILE_IFELSE([AC_LANG_SOURCE([char foo;])],
 CFLAGS="$saved_CFLAGS"
 AC_SUBST(SYMBOL_VISIBILITY)
 
+dnl check os: some linker flags not available on osx
+case $host in
+*-darwin*)
+	;;
+*)
+	LTLDFLAGS_OSMOGAPK='-Wl,--version-script=$(srcdir)/libosmogapk.map'
+	;;
+esac
+AC_SUBST(LTLDFLAGS_OSMOGAPK)
+
 # Checks for programs.
 AC_PROG_CC
 
diff --git a/src/Makefile.am b/src/Makefile.am
index c38f2fe..5dd75ff 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -18,6 +18,7 @@ AM_CFLAGS = \
 	$(NULL)
 
 lib_LTLIBRARIES = libosmogapk.la
+EXTRA_DIST = libosmogapk.map
 
 libosmogapk_la_LDFLAGS = \
 	$(LIBOSMOCORE_LIBS) \
@@ -25,6 +26,7 @@ libosmogapk_la_LDFLAGS = \
 	${OPENCORE_AMRNB_LIBS} \
 	${LIBGSM_LIBS} \
 	$(LIBALSA_LIBS) \
+	$(LTLDFLAGS_OSMOGAPK) \
 	-version-info $(LIBVERSION) \
 	-no-undefined \
 	$(NULL)
diff --git a/src/libosmogapk.map b/src/libosmogapk.map
new file mode 100644
index 0000000..0ab0669
--- /dev/null
+++ b/src/libosmogapk.map
@@ -0,0 +1,44 @@
+LIBOSMOGAPK_1.0 {
+global:
+
+osmo_gapk_pq;
+osmo_gapk_pq_item;
+
+osmo_gapk_pq_create;
+osmo_gapk_pq_prepare;
+osmo_gapk_pq_execute;
+osmo_gapk_pq_destroy;
+
+osmo_gapk_pq_add_item;
+
+osmo_gapk_pq_queue_file_input;
+osmo_gapk_pq_queue_file_output;
+osmo_gapk_pq_queue_rtp_input;
+osmo_gapk_pq_queue_rtp_output;
+osmo_gapk_pq_queue_alsa_input;
+osmo_gapk_pq_queue_alsa_output;
+osmo_gapk_pq_queue_fmt_convert;
+osmo_gapk_pq_queue_codec;
+
+osmo_gapk_format_desc;
+osmo_gapk_format_type;
+osmo_gapk_fmt_conv_cb_t;
+
+osmo_gapk_fmt_get_from_type;
+osmo_gapk_fmt_get_from_name;
+
+osmo_gapk_codec_desc;
+osmo_gapk_codec_type;
+osmo_gapk_codec_conv_cb_t;
+
+osmo_gapk_codec_get_from_type;
+
+osmo_gapk_bench_codec;
+osmo_gapk_bench_enable;
+osmo_gapk_bench_free;
+
+osmo_gapk_bench_get_cycles;
+osmo_gapk_bench_get_frames;
+
+local: *;
+};