[CMake] ExternalProject: pass variable which contains a list

[Tamás Kenéz]

Hi,

I tried to pass a variable to an ExternalProjects config step which
contains a list:

    ExternalProject_Add(... CMAKE_ARGS "-DVAR=contains\;list" ...)

I tried various number of backslashes but none of them worked.
I'd be interested in a workaround if there's one.

Tamas
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