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-rw-r--r--libc/misc/sysvipc/ipc.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/libc/misc/sysvipc/ipc.h b/libc/misc/sysvipc/ipc.h
index 19e6bd106..18011410f 100644
--- a/libc/misc/sysvipc/ipc.h
+++ b/libc/misc/sysvipc/ipc.h
@@ -1,5 +1,8 @@
#ifndef IPC_H
#define IPC_H
+#include <syscall.h>
+
+#ifdef __NR_ipc
/* The actual system call: all functions are multiplexed by this. */
extern int __ipc __P((int __call, int __first, int __second,
@@ -19,4 +22,6 @@ extern int __ipc __P((int __call, int __first, int __second,
#define IPCOP_shmget 23
#define IPCOP_shmctl 24
+#endif
+
#endif /* IPC_H */