This convenience library is linked statically with the various plugins
that use it. The symbols are currently not marked as hidden, which
causes the plugins that use it (e.g. babeltrace-plugin-ctf.so) to expose
them publically. Sad.
Mark the symbols as hidden to avoid that.
Change-Id: If099b529f7c126f5defd5242486009c3fd4195eb
Signed-off-by: Simon Marchi <simon.marchi@efficios.com>
Reviewed-on: https://review.lttng.org/c/babeltrace/+/2409
Tested-by: jenkins <jenkins@lttng.org>