List of Changes in the Pyparsing Parser

Although we tried to keep the esp-idf-kconfig package as close to the original kconfiglib as possible, there are some differences between the two. This section describes those differences. For the original definition of the Kconfig language, please refer to the Kconfig language documentation.

• option keyword is deprecated and supported only in the form of option env=.

• def_<type> keywords are not supported.

• tristate logic (and thus m value) is not supported.

• optional keyword for choice entries is not supported.

• choice entries are now forced to be a bool type.

• ---help--- keyword is not supported.

• config or choice names must contain only numbers, uppercase letters from the English alphabet and underscores.

• Multiple definitions of config/choice entries are now reported to the user.

• The inference of default values has been reworked (see Default Values and Their Inference).

• Preprocessor macros are supported only in the form of symbol = value or symbol := value and strings need to be enclosed in quotes.

• New parser recognizes default values in sdkconfig files (see Default Values and Their Inference).

• New set and set default options are supported, allowing you to indirectly set a value of a config of any type, similarly to select for bool configs (see The set and set default Options).