ENV | |
--- | |
Operator to read environment variables. | |
Use the syntax ``$ENV{VAR}`` to read environment variable ``VAR``. | |
To test whether an environment variable is defined, use the signature | |
``if(DEFINED ENV{<name>})`` of the :command:`if` command. | |
For general information on environment variables, see the | |
:ref:`Environment Variables <CMake Language Environment Variables>` | |
section in the :manual:`cmake-language(7)` manual. |