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-rw-r--r--src/gallium/include/pipe/p_compiler.h21
1 files changed, 21 insertions, 0 deletions
diff --git a/src/gallium/include/pipe/p_compiler.h b/src/gallium/include/pipe/p_compiler.h
index 5020599591..3d6b5b5c81 100644
--- a/src/gallium/include/pipe/p_compiler.h
+++ b/src/gallium/include/pipe/p_compiler.h
@@ -122,6 +122,27 @@ typedef unsigned char boolean;
# endif
#endif
+/*
+ * Define the C99 restrict keyword.
+ *
+ * See also:
+ * - http://cellperformance.beyond3d.com/articles/2006/05/demystifying-the-restrict-keyword.html
+ */
+#ifndef restrict
+# if (__STDC_VERSION__ >= 199901L)
+ /* C99 */
+# elif defined(__SUNPRO_C) && defined(__C99FEATURES__)
+ /* C99 */
+# elif defined(__GNUC__)
+# define restrict __restrict__
+# elif defined(_MSC_VER)
+# define restrict __restrict
+# else
+# define restrict /* */
+# endif
+#endif
+
+
/* Function visibility */
#ifndef PUBLIC
# if defined(__GNUC__) || (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590))