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-rw-r--r--src/localconsts.h6
1 files changed, 3 insertions, 3 deletions
diff --git a/src/localconsts.h b/src/localconsts.h
index dc7723ae3..5b53d364c 100644
--- a/src/localconsts.h
+++ b/src/localconsts.h
@@ -300,11 +300,11 @@
#endif // ENABLE_CHECKS
-#if __cpp_if_constexpr >= 201606
+#if defined(__cpp_if_constexpr) && __cpp_if_constexpr >= 201606
#define ifconstexpr if constexpr
-#else // __cpp_if_constexpr >= 201606
+#else // defined(__cpp_if_constexpr) && __cpp_if_constexpr >= 201606
#define ifconstexpr if
-#endif // __cpp_if_constexpr >= 201606
+#endif // defined(__cpp_if_constexpr) && __cpp_if_constexpr >= 201606
#ifdef USE_SDL2
PRAGMA45(GCC diagnostic push)