cmake: qurt modules now build but do not link

Managed to get the deps set up to build the qurt modules using a
config file for the list of modules.

NuttX link options are being set somewhere that break the qurt build

Signed-off-by: Mark Charlebois <charlebm@gmail.com>

cmake/qurt/builtin_commands.cpp_stub

@@ -0,0 +1,84 @@
+/* builtin command list - automatically generated, do not edit */
+#include <string>
+#include <map>
+#include <stdio.h>
+
+#include <px4_tasks.h>
+#include <px4_posix.h>
+#include <px4_log.h>
+#include <stdlib.h>
+
+using namespace std;
+
+extern void px4_show_devices(void);
+
+extern "C" {
+${builtin_apps_decl_string}
+static int shutdown_main(int argc, char *argv[]);
+static int list_tasks_main(int argc, char *argv[]);
+static int list_files_main(int argc, char *argv[]);
+static int list_devices_main(int argc, char *argv[]);
+static int list_topics_main(int argc, char *argv[]);
+static int sleep_main(int argc, char *argv[]);
+}
+
+
+void init_app_map(map<string,px4_main_t> &apps)
+{
+${builtin_apps_string}
+	apps["shutdown"] = shutdown_main;
+	apps["list_tasks"] = list_tasks_main;
+	apps["list_files"] = list_files_main;
+	apps["list_devices"] = list_devices_main;
+	apps["list_topics"] = list_topics_main;
+	apps["sleep"] = sleep_main;
+}
+
+void list_builtins(map<string,px4_main_t> &apps)
+{
+	printf("Builtin Commands:\\n");
+	for (map<string,px4_main_t>::iterator it=apps.begin(); it!=apps.end(); ++it)
+		printf("\\t%s\\n", (it->first).c_str());
+}
+
+static int shutdown_main(int argc, char *argv[])
+{
+	printf("Shutting down\\n");
+	exit(0);
+}
+
+static int list_tasks_main(int argc, char *argv[])
+{
+	px4_show_tasks();
+	return 0;
+}
+
+static int list_devices_main(int argc, char *argv[])
+{
+	px4_show_devices();
+	return 0;
+}
+
+static int list_topics_main(int argc, char *argv[])
+{
+	px4_show_topics();
+	return 0;
+}
+static int list_files_main(int argc, char *argv[])
+{
+	px4_show_files();
+	return 0;
+}
+static int sleep_main(int argc, char *argv[])
+{
+        if (argc != 2) {
+           PX4_WARN( "Usage: sleep <seconds>" );
+           return 1;
+        }
+
+        unsigned long usecs = ( (unsigned long) atol( argv[1] ) ) * 1000 * 1000;
+        PX4_WARN("Sleeping for %s, %ld",argv[1],usecs);
+        usleep( usecs );
+        return 0;
+}
+