applying pull request raulmur#834 to examples

guillaumemoreau · guillaumemoreau · commit 58f79a67fb2f · 2020-04-14T11:55:56.000+02:00
diff --git a/Examples/Monocular/mono_euroc.cc b/Examples/Monocular/mono_euroc.cc
@@ -18,6 +18,7 @@
 * along with ORB-SLAM2. If not, see <http://www.gnu.org/licenses/>.
 */
 
+#include <unistd.h>
 
 #include<iostream>
 #include<algorithm>
diff --git a/Examples/Monocular/mono_kitti.cc b/Examples/Monocular/mono_kitti.cc
@@ -18,6 +18,7 @@
 * along with ORB-SLAM2. If not, see <http://www.gnu.org/licenses/>.
 */
 
+#include<unistd.h>
 
 #include<iostream>
 #include<algorithm>
diff --git a/Examples/Monocular/mono_tum.cc b/Examples/Monocular/mono_tum.cc
@@ -18,6 +18,7 @@
 * along with ORB-SLAM2. If not, see <http://www.gnu.org/licenses/>.
 */
 
+#include <unistd.h>
 
 #include<iostream>
 #include<algorithm>
diff --git a/Examples/RGB-D/rgbd_tum.cc b/Examples/RGB-D/rgbd_tum.cc
@@ -18,6 +18,7 @@
 * along with ORB-SLAM2. If not, see <http://www.gnu.org/licenses/>.
 */
 
+#include <unistd.h>
 
 #include<iostream>
 #include<algorithm>
diff --git a/Examples/Stereo/stereo_euroc.cc b/Examples/Stereo/stereo_euroc.cc
@@ -18,6 +18,7 @@
 * along with ORB-SLAM2. If not, see <http://www.gnu.org/licenses/>.
 */
 
+#include <unistd.h>
 
 #include<iostream>
 #include<algorithm>
diff --git a/Examples/Stereo/stereo_kitti.cc b/Examples/Stereo/stereo_kitti.cc
@@ -19,6 +19,8 @@
 */
 
 
+#include <unistd.h>
+
 #include<iostream>
 #include<algorithm>
 #include<fstream>
