I need it for an INTERNAL variable, for the different android architecture types that are supported. so he can only set one of the available arch types.

On 18.02.19 18:16, Kyle Edwards wrote:
On Mon, 2019-02-18 at 17:59 +0100, Andreas Naumann wrote:
Hey,

I would introduce a list with the allowed values and introduce a
macro
"checked_set", which tests the setting or aborts.

Regards,
Andreas"

Am 18.02.19 um 15:06 schrieb workbe...@gmx.at:
Hi everyone,

i've looked the web but found no result. I need a string variable
that
allows only certain values, like bool variables only allow
true/false
my string should be either "A" or "B" ...
Is this a cache variable or a regular variable? Cache variables have
this enum-like support in the form of the STRINGS property. Example:

set(MYSTRING "A" CACHE STRING "Documentation for the variable")
set_property(CACHE MYSTRING PROPERTY STRINGS "A;B")

If you need to do this with an ordinary variable, consider using
variable_watch().

Kyle

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