Make sure _MSC_VER is defined before checking (elalish#990)

Avoids the following: error: "_MSC_VER" is not defined, evaluates to 0 [-Werror=undef] 59 | #if _MSC_VER <= 1900 | ^~~~~~~~
RahimovIR · Oct 18, 2024 · e5dbec3 · e5dbec3
1 parent 108a98c
commit e5dbec3
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/include/manifold/linalg.h b/include/manifold/linalg.h
@@ -56,7 +56,7 @@
 
 // In Visual Studio 2015, `constexpr` applied to a member function implies
 // `const`, which causes ambiguous overload resolution
-#if _MSC_VER <= 1900
+#if defined(_MSC_VER) && (_MSC_VER <= 1900)
 #define LINALG_CONSTEXPR14
 #else
 #define LINALG_CONSTEXPR14 constexpr