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-rw-r--r--libXaw/src/Private.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/libXaw/src/Private.h b/libXaw/src/Private.h
index 3a91b7a43..382df3a37 100644
--- a/libXaw/src/Private.h
+++ b/libXaw/src/Private.h
@@ -28,6 +28,8 @@
#ifndef _XawPrivate_h
#define _XawPrivate_h
+#include <unistd.h>
+
#define XawMax(a, b) ((a) > (b) ? (a) : (b))
#define XawMin(a, b) ((a) < (b) ? (a) : (b))
#define XawAbs(a) ((a) < 0 ? -(a) : (a))