colcon build issue

[warmmm]

Hi, when I colcon build this program, it maybe some issue like:
-- stderr: description
CMake Error at CMakeLists.txt:10 (find_package):
By not providing "Findcore.cmake" in CMAKE_MODULE_PATH this project has
asked CMake to find a package configuration file provided by "core", but
CMake did not find one.

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

coreConfig.cmake
core-config.cmake

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

I don't know what is the "core" package, so how can I slove this issue?

[MriverMoon]

try to add core dependence in package.xml and add find_package(core) in CMakeLists.txt in the description package

[MarySeraj]

You should add the following line in your package.xml file:
<depend>core</depend>

[jangjaepil]

Hi, i could build the package and i have a question about the /simulation/actuators_cmds. In the topic type, pos,vel,torque cmds are in the same actuator. Then, each motors are controled by position controller? or velocity or torque?

[AllenChienXXX]

Hi, I build the package successfully by constantly sourcing the workspace in the /src dir. With the command source install/setup.bash, eventually colcon is able to locate my packages. Hope this helps!