1 files changed, 36 insertions, 0 deletions
diff --git a/libc/include/features.h b/libc/include/features.h
new file mode 100644
index 0000000..11eb610
--- /dev/null
+++ b/libc/include/features.h
@@ -0,0 +1,36 @@
+
+#ifndef __FEATURES_H
+#define __FEATURES_H
+
+#ifdef __STDC__
+
+#define __P(x) x
+#define __const const
+
+/* Almost ansi */
+#if __STDC__ != 1
+#define const
+#define volatile
+#endif
+
+#else /* K&R */
+
+#define __P(x) ()
+#define __const
+#define const
+#define volatile
+
+#endif
+
+/* No C++ */
+#define __BEGIN_DECLS
+#define __END_DECLS
+
+/* GNUish things */
+#define __CONSTVALUE
+#define __CONSTVALUE2
+
+#include <sys/cdefs.h>
+
+#endif
+