zephyr/scripts/kconfig
Ulf Magnusson 213a88f7ff Kconfig: Support macro expansion within symbol names
Update Kconfiglib to upstream revision 2be02fac78527 to add support for
expanding macros within symbol names, extending the existing Kconfig
preprocessor
(https://github.com/torvalds/linux/blob/master/Documentation/kbuild/
kconfig-macro-language.txt). Some minor optimizations are included as
well.

This makes it possible to add Kconfig templates to avoid code
repetition, e.g. like below:

Kconfig.log_template:

    choice
    	prompt "Max compiled-in log level for $(module-str)"

    config $(module)_LOG_LEVEL_OFF
    	bool "Off"

    config $(module)_LOG_LEVEL_ERR
    	bool "Error"

    config $(module)_LOG_LEVEL_WRN
    	bool "Warning"

    config $(module)_LOG_LEVEL_INF
    	bool "Info"

    config $(module)_LOG_LEVEL_DBG
    	bool "Debug"

    endchoice

    config $(module)_LOG_LEVEL
    	int
    	default 0 if $(module)_LOG_LEVEL_OFF
    	default 1 if $(module)_LOG_LEVEL_ERR
    	default 2 if $(module)_LOG_LEVEL_WRN
    	default 3 if $(module)_LOG_LEVEL_INF
    	default 4 if $(module)_LOG_LEVEL_DBG

Using the template:

    module = FOO
    module-str = foo
    source "Kconfig.log_template"

    ...

    module = BAR
    module-str = bar
    source "Kconfig.log_template"

This feature might create harder-to-read Kconfig files if abused, so it
should probably be used sparingly.

Fixes: #9761

Signed-off-by: Ulf Magnusson <Ulf.Magnusson@nordicsemi.no>
2018-09-11 16:08:38 +02:00
..
checkconfig.py kconfig: Mention that checkconfig.py lacks Kconfiglib 2 support 2018-05-07 21:53:37 +02:00
diffconfig scripts: move kconfig related scripts to scripts/kconfig 2017-09-11 08:53:56 -07:00
kconfig.py scripts: kconfig: Put a blank line before warnings and errors 2018-09-04 14:28:15 -04:00
kconfiglib.py Kconfig: Support macro expansion within symbol names 2018-09-11 16:08:38 +02:00
menuconfig.py menuconfig: Fix a case of visible symbols not being shown 2018-08-30 14:26:05 +02:00