add __has_attribute(ext_vector_type) check

fabiangreffrath · Nov 15, 2024 · ec10b8f · ec10b8f
1 parent f381c8a
commit ec10b8f
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Showing 2 changed files with 14 additions and 2 deletions.
diff --git a/src/doomtype.h b/src/doomtype.h
@@ -91,6 +91,18 @@ typedef byte lighttable_t;
 #define inline __inline
 #endif
 
+#if defined(__clang__)
+#ifndef __has_feature
+#define __has_feature(x) 0
+#endif
+#ifndef __has_extension
+#define __has_extension __has_feature
+#endif
+#ifndef __has_attribute
+#define __has_attribute __has_feature
+#endif
+#endif
+
 #if defined(__GNUC__) || defined(__clang__)
  #define PRINTF_ATTR(fmt, first) __attribute__((format(printf, fmt, first)))
  #define PRINTF_ARG_ATTR(x) __attribute__((format_arg(x)))

diff --git a/src/m_vector.h b/src/m_vector.h
@@ -22,7 +22,7 @@
 
 #include "doomtype.h"
 
-#ifdef __clang__
+#if defined(__clang__) && __has_attribute(ext_vector_type)
 typedef float vec __attribute__((ext_vector_type(3)));
 #else
 typedef struct
@@ -33,7 +33,7 @@ typedef struct
 } vec;
 #endif
 
-#ifdef __clang__
+#if defined(__clang__) && __has_attribute(ext_vector_type)
 typedef float quat __attribute__((ext_vector_type(4)));
 #else
 typedef struct