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# 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()
# Print CMake version
message(STATUS "CMake Version: ${CMAKE_VERSION}")
# Deal with CMake special cases
if(CMAKE_VERSION VERSION_EQUAL 3.5.1)
message(WARNING "CMake 3.5.1 introduced a crash during configuration. "
"Please consider upgrading to 3.5.2 (cmake.org/Bug/view.php?id=16044)")
endif()
# Darwin needs CMake 3.4
if(APPLE AND CMAKE_VERSION VERSION_LESS 3.4)
message(WARNING "Build on Darwin requires CMake 3.4 or later (tdb library support) "
"or the usage of the patched version in depends.")
endif()
# Windows needs CMake 3.6 (VS_STARTUP_PROJECT)
if(WIN32 AND CMAKE_VERSION VERSION_LESS 3.6)
message(FATAL_ERROR "Build on Windows needs CMake 3.6 or later")
endif()
# Ninja needs CMake 3.2 due to ExternalProject BUILD_BYPRODUCTS usage
if(CMAKE_GENERATOR STREQUAL Ninja AND CMAKE_VERSION VERSION_LESS 3.2)
message(FATAL_ERROR "Generator: Ninja requires CMake 3.2 or later")
endif()
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