default features: make musl usable without feature test macros

[musl] / include / unistd.h

diff --git a/include/unistd.h b/include/unistd.h
index 20ba6cc..b5206a6 100644 (file)
--- a/include/unistd.h
+++ b/include/unistd.h
@@ -5,18 +5,7 @@
 extern "C" {
 #endif
 
-#if __STDC_VERSION__ >= 199901L
-#define __restrict restrict
-#elif !defined(__GNUC__)
-#define __restrict
-#endif
-
-#if __STDC_VERSION__ >= 201112L
-#elif defined(__GNUC__)
-#define _Noreturn __attribute__((__noreturn__))
-#else
-#define _Noreturn
-#endif
+#include <features.h>
 
 #define STDIN_FILENO  0
 #define STDOUT_FILENO 1