<PackageName>_ROOTΒΆ
Calls to find_package(<PackageName>) will search in prefixes
specified by the <PackageName>_ROOT environment variable, where
<PackageName> is the name given to the find_package call
and _ROOT is literal. For example, find_package(Foo) will search
prefixes specified in the Foo_ROOT environment variable (if set).
See policy CMP0074.
This variable may hold a single prefix or a list of prefixes separated
by : on UNIX or ; on Windows (the same as the PATH environment
variable convention on those platforms).
See also the <PackageName>_ROOT CMake variable.