Hello!

Cmake scripts did not defaults to any build type, and no any compiler flags applied, what causes not very understandable build errors.
I.e. it will be good to have something like in CMakeLists.txt:

if (NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
  message(STATUS "No build type selected, default to Debug")
  set(CMAKE_BUILD_TYPE "Debug")
endif()

In this case no errors will be produces, what are more user friendly.