CMake Warning \(dev\) at CMP0037-WARN-colon.cmake:2 \(add_library\):
  Policy CMP0037 is not set: Target names should not be reserved and should
  match a validity pattern.  Run "cmake --help-policy CMP0037" for policy
  details.  Use the cmake_policy command to set the policy and suppress this
  warning.

  The target name "lib:colon" is reserved or not valid for certain CMake
  features, such as generator expressions, and may result in undefined
  behavior.
Call Stack \(most recent call first\):
  CMakeLists.txt:3 \(include\)
This warning is for project developers.  Use -Wno-dev to suppress it.
+
CMake Warning \(dev\) at CMP0037-WARN-colon.cmake:3 \(add_executable\):
  Policy CMP0037 is not set: Target names should not be reserved and should
  match a validity pattern.  Run "cmake --help-policy CMP0037" for policy
  details.  Use the cmake_policy command to set the policy and suppress this
  warning.

  The target name "exe:colon" is reserved or not valid for certain CMake
  features, such as generator expressions, and may result in undefined
  behavior.
Call Stack \(most recent call first\):
  CMakeLists.txt:3 \(include\)
This warning is for project developers.  Use -Wno-dev to suppress it.
+
CMake Warning \(dev\) at CMP0037-WARN-colon.cmake:4 \(add_custom_target\):
  Policy CMP0037 is not set: Target names should not be reserved and should
  match a validity pattern.  Run "cmake --help-policy CMP0037" for policy
  details.  Use the cmake_policy command to set the policy and suppress this
  warning.

  The target name "custom:colon" is reserved or not valid for certain CMake
  features, such as generator expressions, and may result in undefined
  behavior.
Call Stack \(most recent call first\):
  CMakeLists.txt:3 \(include\)
This warning is for project developers.  Use -Wno-dev to suppress it.