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19694e1f2e by Silvio Traversaro <silvio@traversaro.it>:
Do not pass explicitly -O2 flag to compiler in Release build
COPYBARA_INTEGRATE_REVIEW=https://github.com/google/gemma.cpp/pull/3 from traversaro:patch-1 19694e1f2e
PiperOrigin-RevId: 610096914
Using a `CMakePresets.json` file makes it much easier to manage
several alternate build configurations, such as the "ClangCL"
build for Windows. This also makes it easier for tools like
VSCode to run CMake-based builds.