-# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 7)
-# define __attribute__(Spec) /* empty */
-# endif
+#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 7)
+# define _GL_ATTRIBUTE_FORMAT(spec) __attribute__ ((__format__ spec))
+#else
+# define _GL_ATTRIBUTE_FORMAT(spec) /* empty */
+#endif
+#define _GL_ATTRIBUTE_FORMAT_PRINTF(formatstring_parameter, first_argument) \
+ _GL_ATTRIBUTE_FORMAT ((__printf__, formatstring_parameter, first_argument))
+
+/* Solaris 10 declares renameat in <unistd.h>, not in <stdio.h>. */
+/* But in any case avoid namespace pollution on glibc systems. */
+#if (@GNULIB_RENAMEAT@ || defined GNULIB_POSIXCHECK) && defined __sun \
+ && ! defined __GLIBC__
+# include <unistd.h>