colcon build giving cmake error

[hannahwalk]

Under build at step 5, I'm getting this error:

CMake Error at CMakeLists.txt:9 (find_package):
By not providing "Findament_cmake,cmake" in CMAKE_MODULE_PATH this project has asked Make to find a package configuration file provided by
"ament_cmake", but Make did not find one.

Could not find a package configuration file provided by "ament_cmake" with any of the following names:
ament_cmakeConfig.cmake
ament_cmake-config.cmake

Add the installation prefix of "ament_cmake" to CMAKE_PREFIX_ PATH or set
"ament_make_DIR" to a directory containing one of the above files. If
"ament_cake" provides a separate development package or SDK, be sure it has been installed.

---

For ROS2 I've installed Ubuntu Linux - Jammy Jellyfish (22.04)
deb packages (recommended)
and ran the talker-listener example with no issues.

For Gazebo Garden I installed Gazebo Fortress (recommended if using ROS 2 Humble).

Initially when running colcon build I had an error that my cmake version 3.22 was old and I needed at least 3.28. I updated Cmake (to 4.0) and am still getting the error above.

I've tried to be thorough by am unsure if I am missing a step somewhere or if this issue is ROS or gazebo specific and I should post the issue to their github. Any help is greatly appreciated!

[hamilton8415]

Hi hannahwalk, The current version of this software uses a non-standard combination of Humble for ROS2 and Garden for Gazebo. We know that's a bit non-standard but it was required at the time we wrote this software so our instructions are geared around that combo.

So that's the combo that is needed for Ubuntu 22.04. We are just now getting set to release a version of the software for Ubuntu 24.04, and that happily uses a more standard combination of ROS2-Jazzy/Gazebo-Harmonic. We can point you at the right branch if you'd prefer to use Ubuntu 24.04.

[hannahwalk]

Oh I see, I didn't realize that Garden was a version of Gazebo. I've changed to Garden and that seemed to delay the error popping up but am still getting error (below).

I'll try the version for Ubuntu 24.04 if all else fails!

---

~/mbari_wec_ws$ colcon build
Starting >>> buoy_interfaces
Starting >>> simple_interp
Starting >>> buoy_description
Finished <<< simple_interp [0.17s]
Finished <<< buoy_interfaces [0.67s]
Starting >>> buoy_api_py
Starting >>> buoy_api_cpp
Finished <<< buoy_description [1.06s]
Finished <<< buoy_api_py [1.22s]
Starting >>> sim_pblog
Starting >>> pbcmd
Finished <<< sim_pblog [1.42s]
Starting >>> buoy_gazebo
Finished <<< pbcmd [1.50s]
--- stderr: buoy_gazebo
CMake Error at CMakeLists.txt:20 (find_package):
By not providing "Findgz_cmake_vendor.cmake" in CMAKE_MODULE_PATH this
project has asked CMake to find a package configuration file provided by
"gz_cmake_vendor", but CMake did not find one.

Could not find a package configuration file provided by "gz_cmake_vendor"
with any of the following names:

gz_cmake_vendorConfig.cmake
gz_cmake_vendor-config.cmake

Add the installation prefix of "gz_cmake_vendor" to CMAKE_PREFIX_PATH or
set "gz_cmake_vendor_DIR" to a directory containing one of the above files.
If "gz_cmake_vendor" provides a separate development package or SDK, be
sure it has been installed.

Failed <<< buoy_gazebo [0.34s, exited with code 1]
Aborted <<< buoy_api_cpp [14.6s]

Summary: 6 packages finished [15.7s]
1 package failed: buoy_gazebo
1 package aborted: buoy_api_cpp
2 packages had stderr output: buoy_api_cpp buoy_gazebo
2 packages not processed