From c36a54d063f2ab9161229432947b8009032fcfa6 Mon Sep 17 00:00:00 2001
From: Harald Welte <laforge@gnumonks.org>
Date: Sun, 18 Jul 2010 01:46:34 +0200
Subject: [PATCH] hide all internal symbols of the library using
 -fvisibility=hidden

---
 configure.ac    | 2 ++
 src/Makefile.am | 2 ++
 src/scXp.c      | 2 +-
 src/tcap.h      | 5 +++++
 src/tcu.c       | 6 +++---
 5 files changed, 13 insertions(+), 4 deletions(-)

diff --git a/configure.ac b/configure.ac
index 5436a38..88271c8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -10,6 +10,8 @@ AC_CONFIG_MACRO_DIR([m4])
 dnl kernel style compile messages
 m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
 
+gl_VISIBILITY
+
 dnl checks for programs
 AC_PROG_MAKE_SET
 AC_PROG_CC
diff --git a/src/Makefile.am b/src/Makefile.am
index 5b17568..1a20653 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -17,6 +17,8 @@ libosmo_tcap_la_SOURCES =	\
 	tsl_tco.c	\
 	tsl_tsm.c
 
+libosmo_tcap_la_CFLAGS = $(CFLAG_VISIBILITY)
+
 tcap_test_SOURCES = tcap_test.c
 tcap_test_LDADD = -losmo-tcap -losmo-asn1-tcap -lm
 
diff --git a/src/scXp.c b/src/scXp.c
index ce81e2b..ca2b2fb 100644
--- a/src/scXp.c
+++ b/src/scXp.c
@@ -67,7 +67,7 @@ static int udp_read_cb(struct bsc_fd *fd)
 	return rc;
 }
 
-struct tcap_transport_entity *tcap_transp_udp_create(struct sockaddr_storage *local_addr)
+LIB_EXPORTED struct tcap_transport_entity *tcap_transp_udp_create(struct sockaddr_storage *local_addr)
 {
 	struct tcap_transport_entity *tte = talloc_zero(NULL, struct tcap_transport_entity);
 	struct write_queue *wq;
diff --git a/src/tcap.h b/src/tcap.h
index dac0d89..3cdcec5 100644
--- a/src/tcap.h
+++ b/src/tcap.h
@@ -14,6 +14,11 @@
 #include <osmocom/tcap/ComponentPortion.h>
 #include <osmocom/tcap/ABRT-apdu.h>
 
+#if HAVE_VISIBILITY
+#define LIB_EXPORTED __attribute__((__visibility__("default")))
+#else
+#define LIB_EXPORTED
+#endif
 
 struct tcap_component {
 	struct llist_head list;
diff --git a/src/tcu.c b/src/tcu.c
index 0046684..faf2623 100644
--- a/src/tcu.c
+++ b/src/tcu.c
@@ -32,7 +32,7 @@ static const struct value_string tcap_prim_names[] = {
 	{ 0, NULL }
 };
 
-const char *tcap_prim_name(enum tcap_primitive prim)
+LIB_EXPORTED const char *tcap_prim_name(enum tcap_primitive prim)
 {
 	return get_value_string(tcap_prim_names, prim);
 }
@@ -135,7 +135,7 @@ int tcap_tcu_result_nl_ind()
 {
 }
 
-int tcap_user_req_comp(enum tcap_primitive prim, struct tcap_component_ind *tcci)
+LIB_EXPORTED int tcap_user_req_comp(enum tcap_primitive prim, struct tcap_component_ind *tcci)
 {
 	struct tcap_dialogue *td;
 	int rc = 0;
@@ -175,7 +175,7 @@ int tcap_user_req_comp(enum tcap_primitive prim, struct tcap_component_ind *tcci
 	return rc;
 }
 
-int tcap_user_req_dialg(enum tcap_primitive prim, struct tcap_dialg_ind *tcdi)
+LIB_EXPORTED int tcap_user_req_dialg(enum tcap_primitive prim, struct tcap_dialg_ind *tcdi)
 {
 	struct tcap_dialogue *td;
 	int rc = 0;