Question 1

How do I set up ETL with CMake for an embedded project?

Accepted Answer

Use add_subdirectory or FetchContent in CMake, as shown in the README, but note that you may need to define an etl_profile.h for customization and implement platform-specific functions for features like chrono.

Question 2

ETL vs STL for embedded C++: which should I use?

Accepted Answer

Choose ETL if you need deterministic, heap-free containers and compatibility with older C++ standards; use STL for general-purpose applications with dynamic memory and full modern C++ support. ETL is tailored for embedded constraints.

Question 3

Does ETL support error handling with exceptions?

Accepted Answer

Yes, ETL offers configurable error handling via asserts, exceptions, or error handlers, as mentioned in the key features, but it requires profile configuration to choose the method.

Question 4

How to implement the chrono clock functions for my platform?

Accepted Answer

You must provide definitions for functions like etl_get_system_clock() that return time values, as detailed in the platform-specific implementation section, using your system's timing sources.

Question 5

Can I use ETL with Arduino?

Accepted Answer

Yes, ETL is available as an Arduino library via the IDE manager, but you'll still need to handle platform-specific integrations for features like printing or timing if used.

Question 6

What are the performance trade-offs of ETL containers?

Accepted Answer

ETL containers offer cache efficiency with contiguous memory but lack dynamic resizing, so they're fast and predictable in embedded settings but inflexible for variable workloads.

ETL

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