env variables

kconfig doc

kconfig tool conf is also controlled by env variables:

Output files generation:

• KCONFIG_CONFIG - override default .config
• KCONFIG_AUTOCONFIG - overrides default include/config/auto.conf
• KCONFIG_AUTOHEADER - overrides default include/generated/autoconf.h
• KCONFIG_RUSTCCFG - - overrides default include/generated/rustc_cfg

Other:

• KCONFIG_ALLCONFIG
• KCONFIG_OVERWRITECONFIG - in place overwrite of .config to work with symlinks. Tmpfile and rename is used otherwise.
• KCONFIG_DEFCONFIG_LIST - if defconfig not specified, use list of files to combine it
• KCONFIG_NOSILENTUPDATE
• KCONFIG_SEED
• KCONFIG_PROBABILITY
• SRCTREE - when specified try to find files also in SRCTREE:
  • First trying to open exact file name: ./<filename>
  • Then trying to open ${SRCTREE}/<filename>
• CONFIG_ - override default config prefix CONFIG_
• MENUCONFIG_MODE
• NCONFIG_MODE
• ZCONF_DEBUG
• MENUCONFIG_COLOR