[yocto] 'and' combination for OVERRIDES values?

[Takashi Matsuzawa]

Hello, Yocto.

I just wonder if there is convenient way of defining somthing in recipes based on combination of two OVERRIDES variables.
Say, I have two variables xxx and yyy.

AAA = "false"
AAA_xxx = "true"
AAA_yyy = "true"

But what if I want to set AAA to be "true" only when xxx and yyy are in OVERRIDES?
(And also for 'or' condition.)

The similar situation for do_install_append(), etc.

do_install_append_xxx() {
}

do_install_append_yyy() {
}


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