CMake Error at .*Modules/WriteCompilerDetectionHeader.cmake:[0-9]+ \(message\):
  The compiler-specific output directory must be within the same directory as
  the main file.
Call Stack \(most recent call first\):
  MultiBadOutDir.cmake:4 \(write_compiler_detection_header\)
  CMakeLists.txt:3 \(include\)