Error building system-monitor package

[tleyden]

With the latest version of the main branch, I'm getting the following error building the system-monitor package:

$ colcon build --packages-select system_monitor --symlink-install --cmake-args -DCMAKE_BUILD_TYPE=Release
Starting >>> system_monitor
--- stderr: system_monitor
make[2]: *** No rule to make target '/usr/lib/x86_64-linux-gnu/libnl-3.so', needed by 'libnet_monitor_lib.so'.  Stop.
make[2]: *** Waiting for unfinished jobs....
make[1]: *** [CMakeFiles/Makefile2:448: CMakeFiles/net_monitor_lib.dir/all] Error 2
make: *** [Makefile:161: all] Error 2
---
Failed   <<< system_monitor [0.29s, exited with code 2]

Summary: 0 packages finished [0.93s]
  1 package failed: system_monitor
  1 package had stderr output: system_monitor

On my system (ubuntu 20.04) I have /lib/x86_64-linux-gnu/libnl-3.so, but not /usr/lib/x86_64-linux-gnu/libnl-3.so.

Also here are the libnl packages I have installed:

$ dpkg -l | grep -i libnl
ii  libnl-3-200:amd64                                   3.4.0-1                                                               amd64        library for dealing with netlink sockets
ii  libnl-3-dev:amd64                                   3.4.0-1                                                               amd64        development library and headers for libnl-3
ii  libnl-genl-3-200:amd64                              3.4.0-1                                                               amd64        library for dealing with netlink sockets - generic netlink
ii  libnl-genl-3-dev:amd64                              3.4.0-1                                                               amd64        development library and headers for libnl-genl-3
ii  libnl-route-3-200:amd64                             3.4.0-1                                                               amd64        library for dealing with netlink sockets - route interface
ii  libnl-route-3-dev:amd64                             3.4.0-1                                                               amd64        development library and headers for libnl-route-3

• the .so files for a few of the packages:

$ dpkg -L libnl-3-dev | grep -i "\.so"
/lib/x86_64-linux-gnu/libnl-3.so
$ dpkg -L libnl-3-200 | grep -i "\.so"
/lib/x86_64-linux-gnu/libnl-3.so.200.26.0
/lib/x86_64-linux-gnu/libnl-3.so.200

[tleyden]

Update - fixed

I realized I was sharing the autoware directory between my host and docker container, so there may have been some residue from the docker container build that was causing issues.

After doing a clean and then a rebuild, the problem seems to have gone away:

$ rm -rf build/ install/ log/
$ colcon build --symlink-install --cmake-args -DCMAKE_BUILD_TYPE=Release

and the system_monitor package succeeds now.

I think going forward I will use separate autoware directories for source install vs docker install so there is no interference.