X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=libs%2Fbackends%2Fjack%2Fjack_api.cc;h=b63b1c1f69f8d0580623b351c395374b71ad2f4c;hb=c8c6bca6587450ff64303dbc994a4cd28d6ce7aa;hp=c8859a1fc97a8cd0d1dd1a005ef8625dcfda49db;hpb=e5888d398350b26ba2cdc634cc9791e90b4fc6b6;p=ardour.git

diff --git a/libs/backends/jack/jack_api.cc b/libs/backends/jack/jack_api.cc
index c8859a1fc9..b63b1c1f69 100644
--- a/libs/backends/jack/jack_api.cc
+++ b/libs/backends/jack/jack_api.cc
@@ -25,6 +25,21 @@ using namespace ARDOUR;
 static boost::shared_ptr<JACKAudioBackend> backend;
 static boost::shared_ptr<JackConnection> jack_connection;
 
+static boost::shared_ptr<AudioBackend> backend_factory (AudioEngine& ae);
+static int  instantiate (const std::string& arg1, const std::string& arg2);
+static int  deinstantiate ();
+static bool already_configured ();
+static bool available ();
+
+static ARDOUR::AudioBackendInfo _descriptor = {
+	"JACK",
+	instantiate,
+	deinstantiate,
+	backend_factory,
+	already_configured,
+	available
+};
+
 static boost::shared_ptr<AudioBackend>
 backend_factory (AudioEngine& ae)
 {
@@ -33,7 +48,7 @@ backend_factory (AudioEngine& ae)
 	}
 
 	if (!backend) {
-		backend.reset (new JACKAudioBackend (ae, jack_connection));
+		backend.reset (new JACKAudioBackend (ae, _descriptor, jack_connection));
 	}
 
 	return backend;
@@ -51,7 +66,7 @@ instantiate (const std::string& arg1, const std::string& arg2)
 	return 0;
 }
 
-static int 
+static int
 deinstantiate ()
 {
 	backend.reset ();
@@ -66,13 +81,11 @@ already_configured ()
 	return !JackConnection::in_control ();
 }
 
-static ARDOUR::AudioBackendInfo _descriptor = {
-	"JACK",
-	instantiate,
-	deinstantiate,
-	backend_factory,
-	already_configured,
-};
+static bool
+available ()
+{
+	return have_libjack() ? false : true;
+}
 
 extern "C" ARDOURBACKEND_API ARDOUR::AudioBackendInfo* descriptor() { return &_descriptor; }