c++ examples: cmake now honors MODULE_LIST

If MODULE_LIST is set, cmake will only create examples that can be built
with avaialble modules. There has been significant change to cmake file.
Comments show you how to add new examples.

Signed-off-by: Henry Bruce <henry.bruce@intel.com>
Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>

examples/c++/lol.cxx

@@ -0,0 +1,67 @@
+/*
+ * Author: Alexander Komarov <alexander.komarov@intel.com>
+ * Copyright (c) 2014 Intel Corporation.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+ * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+ * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include <unistd.h>
+#include <iostream>
+#include <signal.h>
+#include "lol.h"
+#include <stdlib.h>
+#include <sys/time.h>
+
+int is_running = 0;
+upm::LoL *sensor = NULL;
+
+void
+sig_handler(int signo)
+{
+    printf("got signal\n");
+    if (signo == SIGINT) {
+        is_running = 1;
+    }
+}
+
+//! [Interesting]
+int
+main(int argc, char **argv)
+{
+    sensor = new upm::LoL();
+    signal(SIGINT, sig_handler);
+
+    unsigned char *buffer;
+    //buffer = sensor->getFramebuffer();
+    int x = 0, y = 0;
+    while (!is_running) {
+        sensor->setPixel(x, y, !(sensor->getPixel(x, y)));
+        if (++x == 13) { x = 0; y++; }
+        if (y == 9) y = 0;
+        usleep(10000);
+    }
+
+    std::cout << "exiting application" << std::endl;
+
+    delete sensor;
+
+    return 0;
+}
+//! [Interesting]