build: Add option to toggle Ouroboros logging in tests

The test output is a bit polluted with logs originating fomr the
logging system, e.g.:

23: test_bind_prog started.
23: ==16636== reg/name(DB): Add prog reg_test to name testname.
23: ==16636== reg(EE): Removing  from names.
23: test_bind_prog succeeded.

This adds a flag DISABLE_TEST_LOGGING that suppresses log_* output in
tests to keep them clean:

23: test_bind_prog started.
23: test_bind_prog succeeded.

The status is printed in CMake output:

-- Ouroboros logging in test output disabled
-- Ouroboros logging in test output enabled

By default the flag is ON (clean test output).

Signed-off-by: Dimitri Staessens <dimitri@ouroboros.rocks>
Signed-off-by: Sander Vrijders <sander@ouroboros.rocks>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/ipcpd/unicast/dir/dht.c b/src/ipcpd/unicast/dir/dht.c
index 6b06def9..1388c2de 100644
--- a/src/ipcpd/unicast/dir/dht.c
+++ b/src/ipcpd/unicast/dir/dht.c
@@ -2851,6 +2851,8 @@ static void do_dht_kv_store(const dht_store_msg_t * store)
         uint8_t *   key;
         time_t      exp;
 
+        (void) key; /* Only in logs, not used with DISABLE_TEST_LOGGING */
+
         assert(store != NULL);
 
         val.data = store->val.data;