J. Nick Koston 45525c8a82 [api] Make api a buildable cpp unit test target ...

Three fixes so 'script/cpp_unit_test.py api' actually compiles instead
of crashing in build setup:

1. script/build_helpers.py: when adding transitive component
   dependencies to the post-validation config, use {} (dict) instead
   of [] (list) for non-MULTI_CONF components. socket's
   FILTER_SOURCE_FILES (and any other code that subscripts
   CORE.config[component] with a string key) was crashing because
   socket got config = [] from setdefault.

2. esphome/components/api/api_pb2_service.cpp + the codegen in
   script/api_protobuf/api_protobuf.py: wrap the generated
   APIConnection::read_message_ definition in #ifdef USE_API. The
   class itself is only declared inside #ifdef USE_API in
   api_connection.h, so without the guard the .cpp fails to compile
   in any build that pulls in the api source files without setting
   USE_API (e.g. cpp unit tests of api dependencies).

2026-04-25 04:41:17 -05:00

..

api_protobuf.py

[api] Make api a buildable cpp unit test target

2026-04-25 04:41:17 -05:00