1 files changed, 35 insertions, 0 deletions
diff --git a/Source/cm_utility.hxx b/Source/cm_utility.hxx
new file mode 100644
index 0000000..99d7f8b
--- /dev/null
+++ b/Source/cm_utility.hxx
@@ -0,0 +1,35 @@
+/* Distributed under the OSI-approved BSD 3-Clause License.  See accompanying
+   file Copyright.txt or https://cmake.org/licensing for details.  */
+#ifndef cm_utility_hxx
+#define cm_utility_hxx
+
+#include "cmConfigure.h" // IWYU pragma: keep
+
+#if __cplusplus >= 201703L || (defined(_MSVC_LANG) && _MSVC_LANG >= 201703L)
+#  define CMake_HAVE_CXX_IN_PLACE
+#endif
+
+#if defined(CMake_HAVE_CXX_IN_PLACE)
+#  include <utility>
+#endif
+
+namespace cm {
+
+#if defined(CMake_HAVE_CXX_IN_PLACE)
+
+using std::in_place_t;
+using std::in_place;
+
+#else
+
+struct in_place_t
+{
+  explicit in_place_t() = default;
+};
+
+constexpr in_place_t in_place{};
+
+#endif
+}
+
+#endif