message: cmake 3.0 doesn't have VERSION_GREATER_EQUAL
  Fixes
diff: @@ -73,7 +73,7 @@ elseif(CMAKE_COMPILER_IS_GNUCXX)
  if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS "5.0")
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-missing-field-initializers")
  endif()
  - elseif(CMAKE_CXX_COMPILER_VERSION VERSION_GREATER_EQUAL "7.0")
  + elseif((CMAKE_CXX_COMPILER_VERSION VERSION_GREATER "7.0") OR (CMAKE_CXX_COMPILER_VERSION VERSION_EQUAL "7.0"))
  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wno-noexcept-type")
  endif()
  set(CMAKE_CXX_FLAGS_DEBUG "-O0 -fno-inline -g3 -fstack-protector-all")
  