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-rw-r--r--sysdeps/generic/dl-sysdep.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/sysdeps/generic/dl-sysdep.c b/sysdeps/generic/dl-sysdep.c
index 9fab0f0922..8f9e782205 100644
--- a/sysdeps/generic/dl-sysdep.c
+++ b/sysdeps/generic/dl-sysdep.c
@@ -109,11 +109,15 @@ _dl_sysdep_start_cleanup (void)
 {
 }
 
+#ifndef MAP_ANON
+/* This is only needed if the system doesn't support MAP_ANON.  */
+
 int
 _dl_sysdep_open_zero_fill (void)
 {
   return __open ("/dev/zero", O_RDONLY);
 }
+#endif
 
 void
 _dl_sysdep_fatal (const char *msg, ...)