^CMake Error at SORT-COMPARATOR-NotStrictWeak\.cmake:6 \(list\):
  list sub-command SORT, COMPARATOR: function does not induce a strict weak
  ordering\.  The comparator returned TRUE for both \(a, b\) and \(b, a\)\.
Call Stack \(most recent call first\):
  CMakeLists\.txt:3 \(include\)$
