[PATCH] libosmocore[master]: gsm_utils: call gnutls_global_init() as constructor

[lynxis lazus]

Review at  https://gerrit.osmocom.org/7904

gsm_utils: call gnutls_global_init() as constructor

gnutls_global_init must be called at least once for
gnutls < 3.3.0. It doesn't hurt calling it twice, except
a reference counter is increased.
gnutls >= 3.3.0 will call it automatic.

Fixes: OS#2986
Change-Id: I241b6ae5aa8df13dd78f04658cf0953e9561c9e2
---
M src/gsm/gsm_utils.c
1 file changed, 12 insertions(+), 0 deletions(-)


  git pull ssh://gerrit.osmocom.org:29418/libosmocore refs/changes/04/7904/1

diff --git a/src/gsm/gsm_utils.c b/src/gsm/gsm_utils.c
index 5d8c834..ac2ca24 100644
--- a/src/gsm/gsm_utils.c
+++ b/src/gsm/gsm_utils.c
@@ -112,8 +112,20 @@
 #pragma message ("including GnuTLS for getrandom fallback.")
 #include <gnutls/gnutls.h>
 #include <gnutls/crypto.h>
+
+/* gnutls < 3.3.0 requires global init.
+ * gnutls >= 3.3.0 does it automatic.
+ * It doesn't hurt calling it twice,
+ * as long it's not done at the same time (threads).
+ */
+__attribute__((constructor))
+static void on_dso_load_gnutls(void)
+{
+    gnutls_global_init();
+}
 #endif
 
+
 /* ETSI GSM 03.38 6.2.1 and 6.2.1.1 default alphabet
  * Greek symbols at hex positions 0x10 and 0x12-0x1a
  * left out as they can't be handled with a char and

-- 
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Gerrit-MessageType: newchange
Gerrit-Change-Id: I241b6ae5aa8df13dd78f04658cf0953e9561c9e2
Gerrit-PatchSet: 1
Gerrit-Project: libosmocore
Gerrit-Branch: master
Gerrit-Owner: lynxis lazus <lynxis at fe80.eu>