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-rw-r--r--newlib/libc/include/sys/cdefs.h13
1 files changed, 13 insertions, 0 deletions
diff --git a/newlib/libc/include/sys/cdefs.h b/newlib/libc/include/sys/cdefs.h
index 5f0922c7a..0aeb3ddd3 100644
--- a/newlib/libc/include/sys/cdefs.h
+++ b/newlib/libc/include/sys/cdefs.h
@@ -650,4 +650,17 @@
#endif
#endif
+#ifndef __has_extension
+#define __has_extension __has_feature
+#endif
+#ifndef __has_feature
+#define __has_feature(x) 0
+#endif
+#ifndef __has_include
+#define __has_include(x) 0
+#endif
+#ifndef __has_builtin
+#define __has_builtin(x) 0
+#endif
+
#endif /* !_SYS_CDEFS_H_ */