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-rw-r--r--sysdeps/unix/sysv/linux/alpha/sysdep.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/alpha/sysdep.h b/sysdeps/unix/sysv/linux/alpha/sysdep.h
index 62e308bf5d..272dcebf42 100644
--- a/sysdeps/unix/sysv/linux/alpha/sysdep.h
+++ b/sysdeps/unix/sysv/linux/alpha/sysdep.h
@@ -60,6 +60,11 @@
 #define __NR_osf_getsysinfo	256
 #define __NR_osf_setsysinfo	257
 
+/* Help old kernel headers where particular syscalls are not available.  */
+#ifndef __NR_semtimedop
+# define __NR_semtimedop	423
+#endif
+
 /*
  * In order to get the hidden arguments for rt_sigaction set up
  * properly, we need to call the assembly version.  Detect this in the