Build image faster

In my project I try to test many combinations of default config files. For example files placed at "files/etc" directory. When I make change next I execute "make" to build IMG file of firmware. So "make" walk through all sources to check modifications.

Is it possible to make this process faster? I just modify "files/etc", not sources.

Looks like you could use the image builder. Take five minutes to spin an a new firmware.

try

# CONFIG_AUTOREBUILD is not set

or

CONFIG_CCACHE=y
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