Move spdlog::logger to gz-utils

[mjcarroll]

Draft of moving gazebosim/gz-common#615 here.

[azeey]

CI is not able to find spdlog. Do we need to add it to .githbub/ci/packages.apt?

[iche033]

PRs to add spdlog dependency in:

• gz-utils3-release: Add libgz-utils3-log and dev packages gazebo-release/gz-utils3-release#4
• homebrew-simulation: gz-utils3: Add spdlog dependency osrf/homebrew-simulation#2729

[iche033]

add libspdlog-dev dependency inpackage.xml?

[scpeters]

I just merged osrf/homebrew-simulation#2729

@osrf-jenkins run tests please

[scpeters]

PRs to add spdlog dependency in:

• gz-utils3-release: Add libspdlog-dev dependency gazebo-release/gz-utils3-release#4
• homebrew-simulation: gz-utils3: Add spdlog dependency osrf/homebrew-simulation#2729

also:

• for windows Add spdlog to VCPKG_DEPENDENCIES_LEGACY gazebo-tooling/release-tools#1163

[caguero]

add libspdlog-dev dependency inpackage.xml?

Do we need to add it even if it's a component? I don't see any dependency related with CLI11.

[caguero]

CI is not able to find spdlog. Do we need to add it to .githbub/ci/packages.apt?

Added.

[scpeters]

add libspdlog-dev dependency inpackage.xml?

Do we need to add it even if it's a component? I don't see any dependency related with CLI11.

in my opinion we should add optional dependencies to package.xml

1. If we want to build a dependency from source in a colcon workspace, then the package.xml information should help with proper package build order (assuming the package name matches what we use in package.xml, see Support colcon workspace with bullet and ode dartsim/dart#1389)
2. I think we could eventually install dependencies using rosdep with the package.xml information instead of package.apt, so I think it's worth having there

[azeey]

Discussed this on a video call with Carlos, but the reason we don't have CLI11 in package.xml is that there was no binary package for it on Ubuntu Focal, which is also why we vendored it. I've created #135 to unvendor it and I think as part of that we should also add it to package.xml. We'll also need to add it to rosdep since there's no cli11 key there yet.

All of our platforms have system versions of spdlog available and there's already a rosdep key for it, so I think we should add it to package.xml.

[azeey]

I think should just be GZ_UTILS_VERSION_NAMESPACE.

[caguero]

Changed in f33b379.