--- a/gtk2_ardour/editor_timefx.cc
+++ b/gtk2_ardour/editor_timefx.cc
@@ -411,7 +411,14 @@
 		delete fx;
 	}
 
+#ifndef __ANDROID__
 	pthread_setcancelstate (PTHREAD_CANCEL_DISABLE, NULL);
+#else
+	sigset_t pthread_cancel_block;
+	sigemptyset (&pthread_cancel_block);
+	sigaddset (&pthread_cancel_block, SIGUSR2);
+	sigprocmask (SIG_BLOCK, &pthread_cancel_block, NULL);
+#endif
 	if (current_timefx->request.cancel) {
 		current_timefx->status = -1;
 		for (ResultMap::const_iterator i = results.begin(); i != results.end(); ++i) {
@@ -434,7 +441,11 @@
 			}
 		}
 	}
+#ifndef __ANDROID__
 	pthread_setcancelstate (PTHREAD_CANCEL_ENABLE, NULL);
+#else
+	sigprocmask (SIG_UNBLOCK, &pthread_cancel_block, NULL);
+#endif
 
 	current_timefx->request.done = true;
 }
@@ -447,7 +458,9 @@
 
 	TimeFXDialog* tsd = static_cast<TimeFXDialog*>(arg);
 
+#ifndef __ANDROID__
 	pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, 0);
+#endif
 
 	tsd->editor.do_timefx ();
 
--- a/gtk2_ardour/main.cc
+++ b/gtk2_ardour/main.cc
@@ -307,7 +307,9 @@
 	(void) bind_textdomain_codeset (PACKAGE,"UTF-8");
 #endif
 
+#ifndef __ANDROID__
 	pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, 0);
+#endif
 
 	// catch error message system signals ();
 
--- a/gtk2_ardour/video_image_frame.cc
+++ b/gtk2_ardour/video_image_frame.cc
@@ -199,8 +199,10 @@
 http_get_thread (void *arg) {
 	VideoImageFrame *vif = static_cast<VideoImageFrame *>(arg);
 	char url[2048];
+#ifndef __ANDROID__
 	pthread_setcancelstate(PTHREAD_CANCEL_ENABLE, NULL);
 	pthread_setcanceltype(PTHREAD_CANCEL_ASYNCHRONOUS, NULL);
+#endif
 	snprintf(url, sizeof(url), "%s?frame=%li&w=%d&h=%d&file=%s&format=bgra",
 	  vif->get_video_server_url().c_str(),
 	  (long int) vif->get_req_frame(), vif->get_width(), vif->get_height(),
@@ -218,7 +220,14 @@
 		printf("no-video frame: video-server returned http-status: %d\n", status);
 	}
 
+#ifndef __ANDROID__
 	pthread_setcancelstate(PTHREAD_CANCEL_DISABLE, NULL);
+#else
+	sigset_t pthread_cancel_block;
+	sigemptyset (&pthread_cancel_block);
+	sigaddset (&pthread_cancel_block, SIGUSR2);
+	sigprocmask (SIG_BLOCK, &pthread_cancel_block, NULL);
+#endif
 	vif->http_download_done(res);
 	pthread_exit(0);
 	return 0;
--- a/libs/pbd/pthread_utils.cc
+++ b/libs/pbd/pthread_utils.cc
@@ -171,10 +171,24 @@
 		, name (s)
 	{}
 };
-
+#ifdef __ANDROID__
+static void
+thread_signal_handler (int signum)
+{
+	pthread_exit (0);
+}
+#endif
 static void*
 fake_thread_start (void* arg)
 {
+#ifdef __ANDROID__
+	struct sigaction actions;
+	memset (&actions, 0, sizeof (actions));
+	sigemptyset (&actions.sa_mask);
+	actions.sa_flags = 0;
+	actions.sa_handler = thread_signal_handler;
+	sigaction (SIGUSR2, &actions, NULL);
+#endif
 	ThreadStartWithName* ts      = (ThreadStartWithName*)arg;
 	void* (*thread_work) (void*) = ts->thread_work;
 	void* thread_arg             = ts->arg;
@@ -281,7 +295,11 @@
 			continue;
 		}
 		DEBUG_TRACE (PBD::DEBUG::Threads, string_compose ("Cancel: '%1'\n", t.second));
+#ifndef __ANDROID__
 		pthread_cancel (t.first);
+#else
+		pthread_kill ((t.first), SIGUSR2);
+#endif
 	}
 	all_threads.clear ();
 	pthread_mutex_unlock (&thread_map_lock);
@@ -297,8 +315,11 @@
 			break;
 		}
 	}
-
+#ifndef __ANDROID__
 	pthread_cancel (thread);
+#else
+	pthread_kill ((thread), SIGUSR2);
+#endif
 	pthread_mutex_unlock (&thread_map_lock);
 }
 
--- a/libs/surfaces/frontier/tranzport/tranzport_control_protocol.cc
+++ b/libs/surfaces/frontier/tranzport/tranzport_control_protocol.cc
@@ -1029,8 +1029,10 @@
 
 
 	PBD::notify_gui_about_thread_creation ("gui", pthread_self(), X_("Tranzport"));
+#ifndef __ANDROID__
 	pthread_setcancelstate (PTHREAD_CANCEL_ENABLE, 0);
 	pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, 0);
+#endif
 	next_track ();
 	rtpriority_set();
 	inflight=0;
--- a/libs/surfaces/tranzport/init.cc
+++ b/libs/surfaces/tranzport/init.cc
@@ -155,8 +155,10 @@
 	uint8_t offline = 0;
 
 	register_thread (X_("Tranzport"));
+#ifndef __ANDROID__
 	pthread_setcancelstate (PTHREAD_CANCEL_ENABLE, 0);
 	pthread_setcanceltype (PTHREAD_CANCEL_ASYNCHRONOUS, 0);
+#endif
 	rtpriority_set();
 	inflight=0;
 	//int intro = 20;