-v verbose build
config: defconfig[[~][+]option1[[~][+]option2...]]
- Example: x86_64-native-linuxapp-gcc+debug~RXTX_CALLBACKS
+ Example: x86_64-native-linux-gcc+debug~RXTX_CALLBACKS
The lowercase options are defined inside $(basename $0).
The uppercase options can be the end of a defconfig option
to enable if prefixed with '+' or to disable if prefixed with '~'.