How to retrieve a user environment variable in CMake (Windows)

Question

I know how to retrieve a normal machine wide environment variable in CMAKE using

$ENV{EnvironmentVariableName}

but I can not retrieve a use

Answer 1

Environment variables (that you modify using the System Properties) are only propagated to subshells when you create a new subshell.

If you had a command line prompt (DOS or cygwin) open when you changed the User env vars, then they won't show up.

You need to open a new command line prompt after you change the user settings.

The equivalent in Unix/Linux is adding a line to your .bash_rc: you need to start a new shell to get the values.