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-rw-r--r--misc/sys/cdefs.h18
1 files changed, 18 insertions, 0 deletions
diff --git a/misc/sys/cdefs.h b/misc/sys/cdefs.h
index 3174a85..3d6a20b 100644
--- a/misc/sys/cdefs.h
+++ b/misc/sys/cdefs.h
@@ -93,6 +93,24 @@
#endif
+/* Support for flexible arrays. */
+#if __GNUC_PREREQ (2,97)
+/* GCC 2.97 supports C99 flexible array members. */
+# define __flexarr []
+#else
+# ifdef __GNUC__
+# define __flexarr [0]
+# else
+# ifdef __STDC_VERSION__ && __STDC_VERSION__ >= 199901L
+# define __flexarr []
+# else
+/* Some other non-C99 compiler. Approximate with [1]. */
+# define __flexarr [1]
+# endif
+# endif
+#endif
+
+
/* __asm__ ("xyz") is used throughout the headers to rename functions
at the assembly language level. This is wrapped by the __REDIRECT
macro, in order to support compilers that can do this some other