CMake Error at TRANSFORM-selector-FOR-zero-step.cmake:[0-9]+ \(file\): Error evaluating generator expression: \$<LIST:TRANSFORM,a;b;c,TOUPPER,FOR,0,2,0> sub-command TRANSFORM, selector FOR expects positive numeric value for <step>. Call Stack \(most recent call first\): CMakeLists.txt:[0-9]+ \(include\)