Px4-autopilot: 'px4_sitl gazebo' errors when performing third build step

[dyli96]

Hi there,
I ran make px4_sitl gazebo and got tons of errors in the third build step.
I ran source ubuntu_sim.sh before making
I also followed the dependencies for ROS/Gazebo.
I can run make px4_sitl_default jmavsim correctly but got the errors for gazebo.
Thanks for your help!

[3/6] Performing build step for 'sitl_gazebo'
FAILED: cd /home/csgurel/src/Firmware/build/px4_sitl_default/build_gazebo && /usr/bin/cmake --build . && /usr/bin/cmake -E touch /home/csgurel/src/Firmware/build/px4_sitl_default/external/Stamp/sitl_gazebo/sitl_gazebo-build
[1/50] Building CXX object CMakeFiles/sensor_msgs.dir/Imu.pb.cc.o
[2/50] Linking CXX shared library libmav_msgs.so
[3/50] Linking CXX shared library libstd_msgs.so
[4/50] Building CXX object CMakeFiles/sensor_msgs.dir/Range.pb.cc.o
[5/50] Building CXX object CMakeFiles/sensor_msgs.dir/SITLGps.pb.cc.o
[6/50] Building CXX object CMakeFiles/sensor_msgs.dir/OpticalFlow.pb.cc.o
[7/50] Building CXX object CMakeFiles/nav_msgs.dir/Odometry.pb.cc.o
[8/50] Linking CXX static library OpticalFlow/klt_feature_tracker/libklt_feature_tracker.a
[9/50] Building CXX object CMakeFiles/physics_msgs.dir/Wind.pb.cc.o
[10/50] Building CXX object OpticalFlow/CMakeFiles/OpticalFlow.dir/src/optical_flow.cpp.o
[11/50] Building CXX object OpticalFlow/CMakeFiles/OpticalFlow.dir/src/px4flow.cpp.o
[12/50] Building CXX object OpticalFlow/CMakeFiles/OpticalFlow.dir/src/flow_px4.cpp.o
[13/50] Building CXX object OpticalFlow/CMakeFiles/OpticalFlow.dir/src/flow_opencv.cpp.o
FAILED: /usr/bin/c++   -DLIBBULLET_VERSION=2.83 -DLIBBULLET_VERSION_GT_282 -Dphysics_msgs_EXPORTS -isystem /usr/include/gazebo-9 -isystem /usr/include/bullet -isystem /usr/include/simbody -isystem /usr/local/include -isystem /usr/include/sdformat-6.2 -isystem /usr/include/ignition/math4 -isystem /usr/include/OGRE -isystem /usr/include/OGRE/Terrain -isystem /usr/include/OGRE/Paging -isystem /usr/include/ignition/transport4 -isystem /usr/include/ignition/msgs1 -isystem /usr/include/ignition/common1 -isystem /usr/include/ignition/fuel_tools1 -I/home/csgurel/src/Firmware/Tools/sitl_gazebo/include -I. -I/usr/include/eigen3 -I/usr/include/eigen3/eigen3 -I/usr/include/gazebo-9/gazebo/msgs -I/home/csgurel/src/Firmware/mavlink/include -I/usr/include/Paging -isystem /opt/ros/kinetic/include/opencv-3.3.1-dev -isystem /opt/ros/kinetic/include/opencv-3.3.1-dev/opencv -I/home/csgurel/src/Firmware/Tools/sitl_gazebo/external/OpticalFlow/include -isystem /usr/include/uuid -isystem /usr/include/x86_64-linux-gnu -Wno-deprecated-declarations -fPIC   -I/usr/include/uuid -I/usr/include/x86_64-linux-gnu -std=gnu++14 -MMD -MT CMakeFiles/physics_msgs.dir/Wind.pb.cc.o -MF CMakeFiles/physics_msgs.dir/Wind.pb.cc.o.d -o CMakeFiles/physics_msgs.dir/Wind.pb.cc.o -c Wind.pb.cc
In file included from Wind.pb.h:32:0,
                 from Wind.pb.cc:5:
/usr/include/gazebo-9/gazebo/msgs/vector3d.pb.h:17:2: error: #error This file was generated by an older version of protoc which is
 #error This file was generated by an older version of protoc which is
  ^
/usr/include/gazebo-9/gazebo/msgs/vector3d.pb.h:18:2: error: #error incompatible with your Protocol Buffer headers. Please
 #error incompatible with your Protocol Buffer headers.  Please
  ^
/usr/include/gazebo-9/gazebo/msgs/vector3d.pb.h:19:2: error: #error regenerate this file with a newer version of protoc.
 #error regenerate this file with a newer version of protoc.
  ^
In file included from Wind.pb.cc:5:0:
Wind.pb.h: In member function ‘const gazebo::msgs::Vector3d& physics_msgs::msgs::Wind::force() const’:
Wind.pb.h:318:8: error: ‘_Vector3d_default_instance_’ is not a member of ‘gazebo::msgs’
       &::gazebo::msgs::_Vector3d_default_instance_);
        ^
Wind.pb.cc: In static member function ‘static void physics_msgs::msgs::protobuf_Wind_2eproto::TableStruct::InitDefaultsImpl()’:
Wind.pb.cc:98:19: error: ‘gazebo::msgs::protobuf_vector3d_2eproto’ has not been declared
   ::gazebo::msgs::protobuf_vector3d_2eproto::InitDefaults();
                   ^
Wind.pb.cc:102:7: error: ‘internal_default_instance’ is not a member of ‘gazebo::msgs::Vector3d’
       ::gazebo::msgs::Vector3d::internal_default_instance());
       ^
Wind.pb.cc: In function ‘void physics_msgs::msgs::protobuf_Wind_2eproto::{anonymous}::AddDescriptorsImpl()’:
Wind.pb.cc:122:19: error: ‘gazebo::msgs::protobuf_vector3d_2eproto’ has not been declared
   ::gazebo::msgs::protobuf_vector3d_2eproto::AddDescriptors();
                   ^
FAILED: /usr/bin/c++   -DLIBBULLET_VERSION=2.83 -DLIBBULLET_VERSION_GT_282 -Dsensor_msgs_EXPORTS -isystem /usr/include/gazebo-9 -isystem /usr/include/bullet -isystem /usr/include/simbody -isystem /usr/local/include -isystem /usr/include/sdformat-6.2 -isystem /usr/include/ignition/math4 -isystem /usr/include/OGRE -isystem /usr/include/OGRE/Terrain -isystem /usr/include/OGRE/Paging -isystem /usr/include/ignition/transport4 -isystem /usr/include/ignition/msgs1 -isystem /usr/include/ignition/common1 -isystem /usr/include/ignition/fuel_tools1 -I/home/csgurel/src/Firmware/Tools/sitl_gazebo/include -I. -I/usr/include/eigen3 -I/usr/include/eigen3/eigen3 -I/usr/include/gazebo-9/gazebo/msgs -I/home/csgurel/src/Firmware/mavlink/include -I/usr/include/Paging -isystem /opt/ros/kinetic/include/opencv-3.3.1-dev -isystem /opt/ros/kinetic/include/opencv-3.3.1-dev/opencv -I/home/csgurel/src/Firmware/Tools/sitl_gazebo/external/OpticalFlow/include -isystem /usr/include/uuid -isystem /usr/include/x86_64-linux-gnu -Wno-deprecated-declarations -fPIC   -I/usr/include/uuid -I/usr/include/x86_64-linux-gnu -std=gnu++14 -MMD -MT CMakeFiles/sensor_msgs.dir/Imu.pb.cc.o -MF CMakeFiles/sensor_msgs.dir/Imu.pb.cc.o.d -o CMakeFiles/sensor_msgs.dir/Imu.pb.cc.o -c Imu.pb.cc
In file included from Imu.pb.h:32:0,
                 from Imu.pb.cc:5:
/usr/include/gazebo-9/gazebo/msgs/quaternion.pb.h:17:2: error: #error This file was generated by an older version of protoc which is
 #error This file was generated by an older version of protoc which is
  ^
/usr/include/gazebo-9/gazebo/msgs/quaternion.pb.h:18:2: error: #error incompatible with your Protocol Buffer headers. Please
 #error incompatible with your Protocol Buffer headers.  Please
  ^
/usr/include/gazebo-9/gazebo/msgs/quaternion.pb.h:19:2: error: #error regenerate this file with a newer version of protoc.
 #error regenerate this file with a newer version of protoc.
  ^
In file included from Imu.pb.h:33:0,
                 from Imu.pb.cc:5:
/usr/include/gazebo-9/gazebo/msgs/vector3d.pb.h:17:2: error: #error This file was generated by an older version of protoc which is
 #error This file was generated by an older version of protoc which is
  ^
/usr/include/gazebo-9/gazebo/msgs/vector3d.pb.h:18:2: error: #error incompatible with your Protocol Buffer headers. Please
 #error incompatible with your Protocol Buffer headers.  Please
  ^
/usr/include/gazebo-9/gazebo/msgs/vector3d.pb.h:19:2: error: #error regenerate this file with a newer version of protoc.
 #error regenerate this file with a newer version of protoc.
  ^
In file included from Imu.pb.cc:5:0:
Imu.pb.h: In member function ‘const gazebo::msgs::Quaternion& sensor_msgs::msgs::Imu::orientation() const’:
Imu.pb.h:290:8: error: ‘_Quaternion_default_instance_’ is not a member of ‘gazebo::msgs’
       &::gazebo::msgs::_Quaternion_default_instance_);
        ^
Imu.pb.h: In member function ‘const gazebo::msgs::Vector3d& sensor_msgs::msgs::Imu::angular_velocity() const’:
Imu.pb.h:366:8: error: ‘_Vector3d_default_instance_’ is not a member of ‘gazebo::msgs’
       &::gazebo::msgs::_Vector3d_default_instance_);
        ^
Imu.pb.h: In member function ‘const gazebo::msgs::Vector3d& sensor_msgs::msgs::Imu::linear_acceleration() const’:
Imu.pb.h:442:8: error: ‘_Vector3d_default_instance_’ is not a member of ‘gazebo::msgs’
       &::gazebo::msgs::_Vector3d_default_instance_);
        ^
Imu.pb.cc: In static member function ‘static void sensor_msgs::msgs::protobuf_Imu_2eproto::TableStruct::InitDefaultsImpl()’:
Imu.pb.cc:108:19: error: ‘gazebo::msgs::protobuf_quaternion_2eproto’ has not been declared
   ::gazebo::msgs::protobuf_quaternion_2eproto::InitDefaults();
                   ^
Imu.pb.cc:109:19: error: ‘gazebo::msgs::protobuf_vector3d_2eproto’ has not been declared
   ::gazebo::msgs::protobuf_vector3d_2eproto::InitDefaults();
                   ^
Imu.pb.cc:113:7: error: ‘internal_default_instance’ is not a member of ‘gazebo::msgs::Quaternion’
       ::gazebo::msgs::Quaternion::internal_default_instance());
       ^
Imu.pb.cc:115:7: error: ‘internal_default_instance’ is not a member of ‘gazebo::msgs::Vector3d’
       ::gazebo::msgs::Vector3d::internal_default_instance());
       ^
Imu.pb.cc:117:7: error: ‘internal_default_instance’ is not a member of ‘gazebo::msgs::Vector3d’
       ::gazebo::msgs::Vector3d::internal_default_instance());
       ^
Imu.pb.cc: In function ‘void sensor_msgs::msgs::protobuf_Imu_2eproto::{anonymous}::AddDescriptorsImpl()’:
Imu.pb.cc:143:19: error: ‘gazebo::msgs::protobuf_quaternion_2eproto’ has not been declared
   ::gazebo::msgs::protobuf_quaternion_2eproto::AddDescriptors();
                   ^
Imu.pb.cc:144:19: error: ‘gazebo::msgs::protobuf_vector3d_2eproto’ has not been declared
   ::gazebo::msgs::protobuf_vector3d_2eproto::AddDescriptors();
                   ^
FAILED: /usr/bin/c++   -DLIBBULLET_VERSION=2.83 -DLIBBULLET_VERSION_GT_282 -Dnav_msgs_EXPORTS -isystem /usr/include/gazebo-9 -isystem /usr/include/bullet -isystem /usr/include/simbody -isystem /usr/local/include -isystem /usr/include/sdformat-6.2 -isystem /usr/include/ignition/math4 -isystem /usr/include/OGRE -isystem /usr/include/OGRE/Terrain -isystem /usmake px4_sitl ger/include/OGRE/Paging -isystem /usr/include/ignition/transport4 -isystem /usr/include/ignition/msgs1 -isystem /usr/include/ignition/common1 -isystem /usr/include/ignition/fuel_tools1 -I/home/csgurel/src/Firmware/Tools/sitl_gazebo/include -I. -I/usr/include/eigen3 -I/usr/include/eigen3/eigen3 -I/usr/include/gazebo-9/gazebo/msgs -I/home/csgurel/src/Firmware/mavlink/include -I/usr/include/Paging -isystem /opt/ros/kinetic/include/opencv-3.3.1-dev -isystem /opt/ros/kinetic/include/opencv-3.3.1-dev/opencv -I/home/csgurel/src/Firmware/Tools/sitl_gazebo/external/OpticalFlow/include -isystem /usr/include/uuid -isystem /usr/include/x86_64-linux-gnu -Wno-deprecated-declarations -fPIC   -I/usr/include/uuid -I/usr/include/x86_64-linux-gnu -std=gnu++14 -MMD -MT CMakeFiles/nav_msgs.dir/Odometry.pb.cc.o -MF CMakeFiles/nav_msgs.dir/Odometry.pb.cc.o.d -o CMakeFiles/nav_msgs.dir/Odometry.pb.cc.o -c Odometry.pb.cc
In file included from Odometry.pb.h:32:0,
                 from Odometry.pb.cc:5:
/usr/include/gazebo-9/gazebo/msgs/quaternion.pb.h:17:2: error: #error This file was generated by an older version of protoc which is
 #error This file was generated by an older version of protoc which is
  ^
/usr/include/gazebo-9/gazebo/msgs/quaternion.pb.h:18:2: error: #error incompatible with your Protocol Buffer headers. Please
 #error incompatible with your Protocol Buffer headers.  Please
  ^
/usr/include/gazebo-9/gazebo/msgs/quaternion.pb.h:19:2: error: #error regenerate this file with a newer version of protoc.
 #error regenerate this file with a newer version of protoc.
  ^
In file included from Odometry.pb.h:33:0,
                 from Odometry.pb.cc:5:
/usr/include/gazebo-9/gazebo/msgs/vector3d.pb.h:17:2: error: #error This file was generated by an older version of protoc which is
 #error This file was generated by an older version of protoc which is
  ^
/usr/include/gazebo-9/gazebo/msgs/vector3d.pb.h:18:2: error: #error incompatible with your Protocol Buffer headers. Please
 #error incompatible with your Protocol Buffer headers.  Please
  ^
/usr/include/gazebo-9/gazebo/msgs/vector3d.pb.h:19:2: error: #error regenerate this file with a newer version of protoc.
 #error regenerate this file with a newer version of protoc.
  ^
In file included from Odometry.pb.cc:5:0:
Odometry.pb.h: In member function ‘const gazebo::msgs::Vector3d& nav_msgs::msgs::Odometry::position() const’:
Odometry.pb.h:302:8: error: ‘_Vector3d_default_instance_’ is not a member of ‘gazebo::msgs’
       &::gazebo::msgs::_Vector3d_default_instance_);
        ^
Odometry.pb.h: In member function ‘const gazebo::msgs::Quaternion& nav_msgs::msgs::Odometry::orientation() const’:
Odometry.pb.h:348:8: error: ‘_Quaternion_default_instance_’ is not a member of ‘gazebo::msgs’
       &::gazebo::msgs::_Quaternion_default_instance_);
        ^
Odometry.pb.h: In member function ‘const gazebo::msgs::Vector3d& nav_msgs::msgs::Odometry::linear_velocity() const’:
Odometry.pb.h:394:8: error: ‘_Vector3d_default_instance_’ is not a member of ‘gazebo::msgs’
       &::gazebo::msgs::_Vector3d_default_instance_);
        ^
Odometry.pb.h: In member function ‘const gazebo::msgs::Vector3d& nav_msgs::msgs::Odometry::angular_velocity() const’:
Odometry.pb.h:440:8: error: ‘_Vector3d_default_instance_’ is not a member of ‘gazebo::msgs’
       &::gazebo::msgs::_Vector3d_default_instance_);
        ^
Odometry.pb.cc: In static member function ‘static void nav_msgs::msgs::protobuf_Odometry_2eproto::TableStruct::InitDefaultsImpl()’:
Odometry.pb.cc:106:19: error: ‘gazebo::msgs::protobuf_quaternion_2eproto’ has not been declared
   ::gazebo::msgs::protobuf_quaternion_2eproto::InitDefaults();
                   ^
Odometry.pb.cc:107:19: error: ‘gazebo::msgs::protobuf_vector3d_2eproto’ has not been declared
   ::gazebo::msgs::protobuf_vector3d_2eproto::InitDefaults();
                   ^
Odometry.pb.cc:111:7: error: ‘internal_default_instance’ is not a member of ‘gazebo::msgs::Vector3d’
       ::gazebo::msgs::Vector3d::internal_default_instance());
       ^
Odometry.pb.cc:113:7: error: ‘internal_default_instance’ is not a member of ‘gazebo::msgs::Quaternion’
       ::gazebo::msgs::Quaternion::internal_default_instance());
       ^
Odometry.pb.cc:115:7: error: ‘internal_default_instance’ is not a member of ‘gazebo::msgs::Vector3d’
       ::gazebo::msgs::Vector3d::internal_default_instance());
       ^
Odometry.pb.cc:117:7: error: ‘internal_default_instance’ is not a member of ‘gazebo::msgs::Vector3d’
       ::gazebo::msgs::Vector3d::internal_default_instance());
       ^
Odometry.pb.cc: In function ‘void nav_msgs::msgs::protobuf_Odometry_2eproto::{anonymous}::AddDescriptorsImpl()’:
Odometry.pb.cc:142:19: error: ‘gazebo::msgs::protobuf_quaternion_2eproto’ has not been declared
   ::gazebo::msgs::protobuf_quaternion_2eproto::AddDescriptors();
                   ^
Odometry.pb.cc:143:19: error: ‘gazebo::msgs::protobuf_vector3d_2eproto’ has not been declared
   ::gazebo::msgs::protobuf_vector3d_2eproto::AddDescriptors();
                   ^
ninja: build stopped: subcommand failed.
ninja: build stopped: subcommand failed.
Makefile:197: recipe for target 'px4_sitl' failed
make: *** [px4_sitl] Error 1

[julianoes]

Have you tried make clean and then building it again?
And can you please post the complete build output?

[dyli96]

I updated my protoc and now have new errors.
The errors are too long. I attached a file.

px4_sitl_gazebo_errors.txt

[julianoes]

That's odd. Have you checked if your system packages are all up to date e.g. apt-get update && apt-get upgrade?

On which Ubuntu (or other distribution) are you?

[dyli96]

I tried apt-get update && apt-get upgrade, it did upgrade something. After make clean, I still got the same errors.
It's Ubuntu 18.04.2 LTS

[julianoes]

Have you added any custom ppa's for things like protoc or gazebo?

[stale[bot]]

This issue has been automatically marked as stale because it has not had recent activity. Thank you for your contributions.

[julianoes]

Closing because there was no follow up.

[pranav083]

i am having the same version conflict problem of "protoc" while running the command :

Start Gazebo with plane

make px4_sitl gazebo_plane
I don't know what to do. Any suggestion will be helpful.

[hamishwillee]

@julianoes Reopened. @pranav083 is your setup EXACTLY as described above? If not, how does it differ. What does your your build log look like. Can you respond to https://github.com/PX4/Firmware/issues/12385#issuecomment-508343494

[julianoes]

@pranav083 are you also on Ubuntu 18.04?

[pranav083]

sorry, for the late reply ,But yes i on ubuntu 18.04 .And this is the error that i am getting
https://gist.github.com/pranav083/c005375b0d663a8f917a12224b2aadd1

[pranav083]

@julianoes Reopened. @pranav083 is your setup EXACTLY as described above? If not, how does it differ. What does your your build log look like. Can you respond to #12385 (comment)

yes , @hamishwillee i had run the same command as it was stated above.

[julianoes]

@pranav083 can you try to do these steps and paste the output here:

sudo apt-get update
sudo apt-get upgrade
sudo apt-get install libprotobuf-dev

[pranav083]

@julianoes I had post the updated error in the same link:
https://gist.github.com/pranav083/c005375b0d663a8f917a12224b2aadd1#file-gazebo-make-error-updated

[julianoes]

You need to figure out the protobuf packages installed and where they come from somehow. I have seen this problem before but unfortunately we don't remember how we fixed it.

What's the output of apt-cache showpkg libprotobuf-dev?

@kamilritz do you remember?

[pranav083]

here is the output of the command apt-cache showpkg libprotobuf-dev https://gist.github.com/pranav083/c005375b0d663a8f917a12224b2aadd1#file-showpkg-libprotobuf-dev

[kamilritz]

I also can not recall exactly and I do not have my computer with me at the moment.
Did you run make clean after installing libprotobuf-dev. I think you need version 3.0.0. But during the first run your console output shows:

-- Found Protobuf: /usr/local/lib/libprotobuf.a;-lpthread;-lpthread;-lpthread (found version "3.4.0") 
-- Checking for module 'protobuf'
--   Found protobuf, version 3.4.1

I guess you will therefore need to run make clean first.

[pranav083]

This time , I had run all the command step by step after restarting my laptop and make a fresh copy of the clone of Firmware from github . https://gist.github.com/pranav083/c005375b0d663a8f917a12224b2aadd1#file-updated-error

It is still returning the same error . But , one thing that i had noticed is that during the execution of the make file with the command make px4_sitl gazebo
-- Looking for pthread_create in pthreads - not found
-- Looking for pthread_create in pthread

In the line no. 116- 117 of the above link . I had searched for the error but doesn't able to understand its significance .

[kamilritz]

It is still finding the wrong version of libprotobuf

-- Found Protobuf: /usr/local/lib/libprotobuf.a;-lpthread;-lpthread;-lpthread (found version "3.4.0") 
-- Checking for module 'protobuf'
--   Found protobuf, version 3.4.1

I am pretty sure, that this is the issue. It needs to find the protobuf version 3.0.0 which you install with the apt-get command.

You could try to remove the /usr/local/lib/libprotobuf.afile.

[pranav083]

i had remove the file located at /usr/local/lib/libprotobuf.a and try run again run the make command make px4_sitl gazebo but it is still getting the same version of libprotobuf that is 3.4.0

-- Found Protobuf: /usr/lib/x86_64-linux-gnu/libprotobuf.so;-lpthread;-lpthread;-lpthread (found version "3.4.0") -- Checking for module 'protobuf' -- Found protobuf, version 3.4.1

Can anyone guide me how to downgrade my libprotobuf version .

[kamilritz]

Now it found /usr/lib/x86_64-linux-gnu/libprotobuf.so. You may want to remove also this. I remember to have removed a few files, but no guarantees.

[pranav083]

Now , Its is return this
-- Found Protobuf: Protobuf_LIBRARY-NOTFOUND;-lpthread;-lpthread;-lpthread (found version "3.4.0") -- Checking for module 'protobuf' -- Found protobuf, version 3.4.1
and for more error see:
https://gist.github.com/pranav083/c005375b0d663a8f917a12224b2aadd1#file-updated-error

[kamilritz]

Ok, that seems to be a dead end. I will check on my computer and come back to you tomorrow.

[pranav083]

ok.

Ok, that seems to be a dead end. I will check on my computer and come back to you tomorrow.

[kamilritz]

Can you try to look which protobuf related files are on your computer. Try sudo find / -type f -name 'libproto*'

My output looks roughly like this:

/var/lib/dpkg/info/libprotobuf-lite19:amd64.list
/var/lib/dpkg/info/libprotoc19:amd64.list
/var/lib/dpkg/info/libprotoc-dev:amd64.list
/var/lib/dpkg/info/libprotobuf-lite10:amd64.list
/var/lib/dpkg/info/libprotobuf-dev:amd64.list
/var/lib/dpkg/info/libprotoc10:amd64.list
/var/lib/dpkg/info/libprotobuf10:amd64.list
/var/lib/dpkg/info/libprotobuf10:amd64.md5sums
/var/lib/dpkg/info/libprotobuf10:amd64.shlibs
/var/lib/dpkg/info/libprotobuf10:amd64.triggers
/var/lib/dpkg/info/libprotobuf19:amd64.list
/var/lib/dpkg/info/libprotobuf19:amd64.md5sums
/var/lib/dpkg/info/libprotobuf19:amd64.shlibs
/var/lib/dpkg/info/libprotobuf19:amd64.triggers
/var/lib/dpkg/info/libprotobuf-lite19:amd64.md5sums
/var/lib/dpkg/info/libprotobuf-lite19:amd64.shlibs
/var/lib/dpkg/info/libprotobuf-lite19:amd64.triggers
/var/lib/dpkg/info/libprotoc19:amd64.md5sums
/var/lib/dpkg/info/libprotoc19:amd64.shlibs
/var/lib/dpkg/info/libprotoc19:amd64.triggers
/var/lib/dpkg/info/libprotobuf-lite10:amd64.md5sums
/var/lib/dpkg/info/libprotobuf-lite10:amd64.shlibs
/var/lib/dpkg/info/libprotobuf-lite10:amd64.triggers
/var/lib/dpkg/info/libprotobuf-dev:amd64.md5sums
/var/lib/dpkg/info/libprotoc-dev:amd64.md5sums
/var/lib/dpkg/info/libprotoc10:amd64.md5sums
/var/lib/dpkg/info/libprotoc10:amd64.shlibs
/var/lib/dpkg/info/libprotoc10:amd64.triggers
/usr/lib/x86_64-linux-gnu/libprotobuf-lite.so.19.0.0
/usr/lib/x86_64-linux-gnu/libprotoc.a
/usr/lib/x86_64-linux-gnu/libprotoc.so.10.0.0
/usr/lib/x86_64-linux-gnu/libprotoc.so.19.0.0
/usr/lib/x86_64-linux-gnu/libprotobuf.so.19.0.0
/usr/lib/x86_64-linux-gnu/libprotobuf.so.10.0.0
/usr/lib/x86_64-linux-gnu/libprotobuf-lite.a
/usr/lib/x86_64-linux-gnu/libprotobuf-lite.so.10.0.0
/usr/lib/x86_64-linux-gnu/libprotobuf.a
/usr/lib/libreoffice/program/libprotocolhandlerlo.so
/usr/lib/pulse-11.1/modules/libprotocol-http.so
/usr/lib/pulse-11.1/modules/libprotocol-cli.so
/usr/lib/pulse-11.1/modules/libprotocol-simple.so
/usr/lib/pulse-11.1/modules/libprotocol-native.so

My libprotobuf-dev and libprotoc-dev are on version 3.0.0 and while running make px4_sitl gazebo it is detecting the version 3.0.0. correctly.

[pranav083]

yes , this is my output of the search result. sudo find / -type f -name 'libproto*' is :
https://gist.github.com/pranav083/c005375b0d663a8f917a12224b2aadd1#file-sudo-find-type-f-name-libproto

[kamilritz]

Can you upload the output such that each file is on a separate line?

[pranav083]

Can you upload the output such that each file is on a separate line?

@kamilritz i have updated result on the gist page.

[julianoes]

Don't forget to do sudo ldconfig after deleting library files.

[kamilritz]

Thanks. I would start with removing the libraries that are in your ros workspace, of course only if you do not need them for something else. The libraries in /snap/ should be okay, I have them too.
And then also remove other libraries that do not appear on my list. For sure the ones in /usr/local/lib/.
And before trying again do sudo ldconfig as julianoes suggested.

[pranav083]

now , I have run the command as follows see the command that i had gone through, If you find any error and also see line no. 273 to 275:
https://gist.github.com/pranav083/c005375b0d663a8f917a12224b2aadd1#file-after-implentation
It is getting the same version of the libprotobuf . Is their any way to downgrade my libprotobuf to the desired library version.

after doing this my gazebo also stop working it says :
gzclient: error while loading shared libraries: libprotobuf.so.10: cannot open shared object file: No such file or directory
gzserver: error while loading shared libraries: libprotobuf.so.10: cannot open shared object file: No such file or directory

[kamilritz]

You still have some libproto* files /home/mighty/. I would suggest to do the standard installation again after removing certain libraries. Because you can not be sure that you did not remove a wrong library file. This includes also to reinstall gazebo. Just do again these parts of the toolchain installation.

[pranav083]

I had tried all the solution provided above but no success so far. the one thing that i had not done is reinstalling whole ros melodic. First, remove all the file that were their were their during the first installation (except ros melodic) and then I have execute the script file provided in the documentation. But it is still having the same error of libprotobuf version error. :cry:
Do i need to reinstall ROS also .

[pranav083]

I had finally solve this error . It was definitely a libprotobufversion error as the version that is needed to build is version 3.0.0 and mine was detecting a upgarded version that was 3.4.1.
As stated above one can check his version by running protoc --version on your terminal. The libprotobuf is actually installed in the directory /usr/local/include/google.
So, to installed the correct version first download the correct file from here protobuf-cpp-3.0.0.tar.gz . Into your Download folder. And then follow the steps that are listed on this link :

http://answers.gazebosim.org/question/18096/this-file-was-generated-by-an-older-version-of-protoc/

NOTE : In the above link file you have downloaded their is no need of running $ ./autogen.sh as the required file are already downloaded in it .It is due to outdated autogen.sh file as listed here .
And also when you run $ make check it will return some error . But, you can ignore that as it run fine without that also.
After that go to Your Firmware directory that you had cloned. And run
$ make clean
$ make px4_sitl gazebo
Now, you are good to go.
Hope, this help others

[julianoes]

Nice, thanks for sharing this. I guess the problem was the version that was somehow installed to /usr/local. I would think that you can just remove what is conflicting from /usr/local and then install the default one again which comes with the distribution.

[bigbellmercy]

I had finally solve this error . It was definitely a libprotobufversion error as the version that is needed to build is version 3.0.0 and mine was detecting a upgarded version that was 3.4.1.
As stated above one can check his version by running protoc --version on your terminal. The libprotobuf is actually installed in the directory /usr/local/include/google.
So, to installed the correct version first download the correct file from here protobuf-cpp-3.0.0.tar.gz . Into your Download folder. And then follow the steps that are listed on this link :

http://answers.gazebosim.org/question/18096/this-file-was-generated-by-an-older-version-of-protoc/

NOTE : In the above link file you have downloaded their is no need of running $ ./autogen.sh as the required file are already downloaded in it .It is due to outdated autogen.sh file as listed here .
And also when you run $ make check it will return some error . But, you can ignore that as it run fine without that also.
After that go to Your Firmware directory that you had cloned. And run
$ make clean
$ make px4_sitl gazebo
Now, you are good to go.
Hope, this help others

For similar users,

A solution case

In my case cartographer_ros caused this protoc version collision problem. So, I did the above method but it failed in my case.

So, as like the another solution in #11568, I reinstalled ROS/Gajebo again and the problem disappeared.

[Iko-Git]

I had finally solve this error . It was definitely a libprotobufversion error as the version that is needed to build is version 3.0.0 and mine was detecting a upgarded version that was 3.4.1.
As stated above one can check his version by running protoc --version on your terminal. The libprotobuf is actually installed in the directory /usr/local/include/google.
So, to installed the correct version first download the correct file from here protobuf-cpp-3.0.0.tar.gz . Into your Download folder. And then follow the steps that are listed on this link :
http://answers.gazebosim.org/question/18096/this-file-was-generated-by-an-older-version-of-protoc/
NOTE : In the above link file you have downloaded their is no need of running $ ./autogen.sh as the required file are already downloaded in it .It is due to outdated autogen.sh file as listed here .
And also when you run $ make check it will return some error . But, you can ignore that as it run fine without that also.
After that go to Your Firmware directory that you had cloned. And run
$ make clean
$ make px4_sitl gazebo
Now, you are good to go.
Hope, this help others

For similar users,

A solution case

In my case cartographer_ros caused this protoc version collision problem. So, I did the above method but it failed in my case.

So, as like the another solution in #11568, I reinstalled ROS/Gajebo again and the problem disappeared.

I am facing the same problem. Could you please guide me in the installation of libprotobuf version 3.0.0?!

[bigbellmercy]

I'm sorry. I fortgot to install it. May someone help you..

[Iko-Git]

I'm sorry. I fortgot to install it. May someone help you..

The idea is I need guidance in general to solve the problem. I spent a lot of hours and am blocking in, in the following link you can find the error I am receiving while running make px4_sitl_default gazebo: https://discuss.px4.io/t/error-while-running-make-px4-sitl-default-gazebo/20388

[Iko-Git]

I'm sorry. I fortgot to install it. May someone help you..

The idea is I need guidance in general to solve the problem. I spent a lot of hours and am blocking in, in the following link you can find the error I am receiving while running make px4_sitl_default gazebo: https://discuss.px4.io/t/error-while-running-make-px4-sitl-default-gazebo/20388

I applied pip install protobuf==3.0.0 sudo ldconfig make clean then still facing the same problem while running make px4_sitl_default gazebo