ESP32 Forum

I'm looking to perform a number of automated builds with different configurations. I tried something like:

make CONFIG_MY_OPTION=1

but this doesn't appear to be overriding the CONFIG_MY_OPTION=2 that is in sdkconfig.

Possible to override variables like this? Other ideas for how to best automate a few slight variations in sdkconfig? I've thought of using sed to alter sdkconfig (seems a bit messy), pre-creating a number of sdkconfig files (this seems difficult to maintain).

Not really. Issue is that it would mess with the dependency tracking: at the moment, the make system cannot figure out from a config variable which files it needs to recompile. The current implementation is that any file that needs it depends on sdkconfig.h, which changes when you do a 'make menuconfig', retriggering a rebuild of all relevant files. (An exception, by the way, are the esp32 serial port config variables; you can override these with the environment variables ESPPORT and ESPBAUD.)

make oldconfig KCONFIG_CONFIG=mysdkconfigfile ?

What I' doing is to have several configuration files, then I build:
It works with no problem.