sync with upstream

1 files changed, 49 insertions, 0 deletions

diff --git a/cmake/scripts/common/GeneratorSetup.cmake b/cmake/scripts/common/GeneratorSetup.cmake
new file mode 100644
index 0000000..304b504
--- /dev/null
+++ b/cmake/scripts/common/GeneratorSetup.cmake
@@ -0,0 +1,49 @@
+# 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()