DirPath | Multiple:
No | Default: “<Project>/
The path to project’s default header files. PlatformIO uses it for the
pio run command. The default value is
include meaning an
include directory located under the root directory of the project. This
path will be added to
CPPPATH of the build environment.
If you need to add extra include directories to
CPPPATH scope, please use
-I /path/to/extra/dir option.
This option can also be configured by the global environment variable