Just installed PlatformIO and cannot for the life of me get it to compile files placed either alongside main.cpp, in a subdirectory of src (e.g., src/util/uuid.c) or in the libs subdirectory (libs/uuid/src/uuid.c or libs/uuid/uuid.c). When I try to build, they’re ignored and then I get link errors involving functions defined therein.
What am I doing wrong?
Image attached. thank you!