CMake Error at WrongArguments.cmake:[0-9]+ \(add_custom_target\):
  Error evaluating generator expression:

    \$<PATH_EQUAL>

  \$<PATH_EQUAL> expression requires 2 comma separated parameters, but got 0
  instead.
Call Stack \(most recent call first\):
  CMakeLists.txt:[0-9]+ \(include\)


CMake Error at WrongArguments.cmake:[0-9]+ \(add_custom_target\):
  Error evaluating generator expression:

    \$<PATH_EQUAL:>

  \$<PATH_EQUAL> expression requires 2 comma separated parameters, but got 1
  instead.
Call Stack \(most recent call first\):
  CMakeLists.txt:[0-9]+ \(include\)


CMake Error at WrongArguments.cmake:2 \(add_custom_target\):
  Error evaluating generator expression:

    \$<PATH_EQUAL:,,>

  \$<PATH_EQUAL> expression requires 2 comma separated parameters, but got 3
  instead.
Call Stack \(most recent call first\):
  CMakeLists.txt:[0-9]+ \(include\)


CMake Error at WrongArguments.cmake:[0-9]+ \(add_custom_target\):
  Error evaluating generator expression:

    \$<PATH_EQUAL:something,,>

  \$<PATH_EQUAL> expression requires 2 comma separated parameters, but got 3
  instead.
Call Stack \(most recent call first\):
  CMakeLists.txt:[0-9]+ \(include\)