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-rw-r--r--misc/sys/cdefs.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/misc/sys/cdefs.h b/misc/sys/cdefs.h
index b1695376dc..638872b87b 100644
--- a/misc/sys/cdefs.h
+++ b/misc/sys/cdefs.h
@@ -412,6 +412,12 @@
 # define __glibc_has_attribute(attr)	0
 #endif
 
+#ifdef __has_include
+# define __glibc_has_include(header)	__has_include (header)
+#else
+# define __glibc_has_include(header)	0
+#endif
+
 #if (!defined _Noreturn \
      && (defined __STDC_VERSION__ ? __STDC_VERSION__ : 0) < 201112 \
      &&  !__GNUC_PREREQ (4,7))