fixed some issues

build.sh

@@ -0,0 +1,40 @@
+echo "Configuring and building Thirdparty/DBoW2 ..."
+
+cd Thirdparty/DBoW2
+mkdir build
+cd build
+cmake .. -DCMAKE_BUILD_TYPE=Release
+make -j
+
+cd ../../g2o
+
+echo "Configuring and building Thirdparty/g2o ..."
+
+mkdir build
+cd build
+cmake .. -DCMAKE_BUILD_TYPE=Release
+make -j
+
+cd ../../Sophus
+
+echo "Configuring and building Thirdparty/Sophus ..."
+
+mkdir build
+cd build
+cmake .. -DCMAKE_BUILD_TYPE=Release
+make -j
+
+cd ../../../
+
+echo "Uncompress vocabulary ..."
+
+cd Vocabulary
+tar -xf ORBvoc.txt.tar.gz
+cd ..
+
+echo "Configuring and building ORB_SLAM3 ..."
+
+mkdir build
+cd build
+cmake .. -DCMAKE_BUILD_TYPE=Release
+make -j4