Update log usage to be compatible with spdlog 1.15 #80
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The latest version of spdlog (1.15) bundles a newer version of fmtlib, which removes its default formatting behavior for enum types. Enum values must now either have a formatter specialization declared or be wrapped in a call to fmt::underlying() to print them as integers. (The previous behavior was to automatically print enum values as integers).
This enum will need a formatter overload if we ever want to print out its value in a logging statement. The main Cascade branch doesn't currently do that, but the cascade_chain branch does (to debug member selection policies in the SignatureStore subgroup), so I know it will be needed. It seems better to fix it in the main branch and then inherit the changes in cascade_chain than to fix it in cascade_chain and later backport the changes to the main branch.
This is unrelated to the logger changes in this branch, but it needs to be fixed to get the "build check" to pass on GitHub. GitHub recently updated their build servers to a later version of Ubuntu, which does not have a "python3.10" package - it has one named "python3.12" instead. The better way to ensure the latest python is installed in these build scripts is to install the "python3" package, which always points to the current Python 3 package in Ubuntu.
Apparently, GitHub's Ubuntu image used to include this package by default, but now it doesn't so we need to install it from apt. Again, this is unrelated to my spdlog changes, but needs to be committed to test if the changes will build on GitHub.
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The latest version of spdlog (1.15) depends on a newer version of fmt (11.1) that no longer has a default format behavior for enum types. To maintain compatibility with spdlog 1.15, all enum types must have a formatter specialization, or logger calls with enum values must wrap the enum values in
fmt::underlying()to re-enable the old behavior of printing the integer value of the enum.This change is backward-compatible with spdlog 1.12, so there's no need to increase our minimum required version.