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-rw-r--r--sysdeps/unix/sysv/linux/alpha/sysdep.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/sysdeps/unix/sysv/linux/alpha/sysdep.h b/sysdeps/unix/sysv/linux/alpha/sysdep.h
index dcf2d1e3d7..d61d4df550 100644
--- a/sysdeps/unix/sysv/linux/alpha/sysdep.h
+++ b/sysdeps/unix/sysv/linux/alpha/sysdep.h
@@ -51,7 +51,9 @@
* Some syscalls no Linux program should know about:
*/
#define __NR_osf_sigprocmask 48
-#define __NR_osf_shmat 209
+#ifndef __NR_osf_shmat
+# define __NR_osf_shmat 209
+#endif
#define __NR_osf_getsysinfo 256
#define __NR_osf_setsysinfo 257