1 files changed, 62 insertions, 0 deletions
diff --git a/include/ble/compiler-support.h b/include/ble/compiler-support.h
new file mode 100644
index 0000000..1e7e185
--- /dev/null
+++ b/include/ble/compiler-support.h
@@ -0,0 +1,62 @@
+#ifndef COMPILER_SUPPORT_H
+
+#ifdef __has_include
+
+#  if __has_include(<optional>)
+#    include <optional>
+#    define have_optional 1
+#  elif __has_include(<experimental/optional>)
+#    include <experimental/optional>
+#    define have_optional 1
+#    define have_experimental_optional 1
+#  else
+#    define have_optional 0
+#  endif
+
+#  if __has_include(<variant>)
+#    include <variant>
+#    define have_variant 1
+#  elif __has_include(<experimental/variant>)
+#    include <experimental/variant>
+#    define have_variant 1
+#    define have_experimental_variant 1
+#  else
+#    define have_variant 0
+#  endif
+
+#endif
+
+namespace trygvis {
+namespace compiler {
+
+#if have_experimental_optional
+
+template<typename T>
+using o = std::experimental::optional<T>;
+
+#elif have_optional
+
+template<typename T>
+using o = std::optional<T>;
+
+#endif
+
+#if have_experimental_variant
+
+template<typename... T>
+using variant = std::experimental::variant<T>;
+using monostate = std::experimental::monostate;
+
+#elif have_variant
+
+template<typename... T>
+using variant = std::variant<T...>;
+using monostate = std::monostate;
+
+#endif
+
+} // namespace compiler
+} // namespace trygvis
+
+
+#endif