# Configure single-/multiconfiguration generators and variables
#
# CORE_BUILD_CONFIG that is set to
#   - CMAKE_BUILD_TYPE for single configuration generators such as make, nmake
#   - a variable that expands on build time to the current configuration for
#     multi configuration generators such as VS or Xcode
if(CMAKE_CONFIGURATION_TYPES)
  if(CMAKE_BUILD_TYPE)
    message(FATAL_ERROR "CMAKE_BUILD_TYPE must not be defined for multi-configuration generators")
  endif()
  set(CORE_BUILD_CONFIG ${CMAKE_CFG_INTDIR})
  message(STATUS "Generator: Multi-configuration (${CMAKE_GENERATOR})")
else()
  if(CMAKE_BUILD_TYPE)
    set(CMAKE_BUILD_TYPE ${CMAKE_BUILD_TYPE}
        CACHE STRING "Choose build type (${CMAKE_BUILD_TYPES})" FORCE)
  else()
    # Set default
    set(CMAKE_BUILD_TYPE Release
        CACHE STRING "Choose build type (${CMAKE_BUILD_TYPES})" FORCE)
  endif()
  set(CORE_BUILD_CONFIG ${CMAKE_BUILD_TYPE})
  message(STATUS "Generator: Single-configuration: ${CMAKE_BUILD_TYPE} (${CMAKE_GENERATOR})")
endif()