[CMake] How to assign a boolean expression to a variable?

[Yaron Cohen-Tal]

I want to set "FOO" to "TRUE" iff both "COND_A" and "COND_B" are true.I
tried the following:

set (FOO (${COND_A} AND ${COND_B}))

but then FOO get's a value like "(;TRUE;AND;TRUE;)" instead of "TRUE". So I
had to write instead:

if (${COND_A} AND ${COND_B})
    set (FOO TRUE)
else ()
    set (FOO FALSE)
endif ()

Is there a better way?

Thanx,
Yaron
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