CMake Error at BadOR.cmake:1 \(add_custom_target\): Error evaluating generator expression: \$<OR> \$<OR> expression requires at least one parameter. Call Stack \(most recent call first\): CMakeLists.txt:3 \(include\) + CMake Error at BadOR.cmake:1 \(add_custom_target\): Error evaluating generator expression: \$<OR:> Parameters to \$<OR> must resolve to either '0' or '1'. Call Stack \(most recent call first\): CMakeLists.txt:3 \(include\) + CMake Error at BadOR.cmake:1 \(add_custom_target\): Error evaluating generator expression: \$<OR:,> Parameters to \$<OR> must resolve to either '0' or '1'. Call Stack \(most recent call first\): CMakeLists.txt:3 \(include\) + CMake Error at BadOR.cmake:1 \(add_custom_target\): Error evaluating generator expression: \$<OR:01> Parameters to \$<OR> must resolve to either '0' or '1'. Call Stack \(most recent call first\): CMakeLists.txt:3 \(include\) + CMake Error at BadOR.cmake:1 \(add_custom_target\): Error evaluating generator expression: \$<OR:nothing> Parameters to \$<OR> must resolve to either '0' or '1'. Call Stack \(most recent call first\): CMakeLists.txt:3 \(include\) + CMake Error at BadOR.cmake:1 \(add_custom_target\): Error evaluating generator expression: \$<OR:0,nothing> Parameters to \$<OR> must resolve to either '0' or '1'. Call Stack \(most recent call first\): CMakeLists.txt:3 \(include\)$