6 files changed, 6 insertions, 1 deletions
diff --git a/X11/xtrans/Xtrans.c b/X11/xtrans/Xtrans.c
index 879a1d309..caf1ff68e 100644
--- a/X11/xtrans/Xtrans.c
+++ b/X11/xtrans/Xtrans.c
@@ -48,6 +48,7 @@ from The Open Group.
  */
 
 #include <ctype.h>
+#include <unistd.h>
 
 #ifdef _MSC_VER
 #include <X11\Xwinsock.h>
diff --git a/apps/xclock/Clock.c b/apps/xclock/Clock.c
index f0bab4740..9322473a7 100644
--- a/apps/xclock/Clock.c
+++ b/apps/xclock/Clock.c
@@ -113,7 +113,7 @@ SOFTWARE.
 #include <locale.h>
 extern Boolean no_locale; /* if True, use old (unlocalized) behaviour */
 #endif
-
+#include <unistd.h>
 
 /* Private Definitions */
 
diff --git a/libXmu/src/StrToCurs.c b/libXmu/src/StrToCurs.c
index 9c998ffd0..e9f36b96e 100644
--- a/libXmu/src/StrToCurs.c
+++ b/libXmu/src/StrToCurs.c
@@ -57,6 +57,7 @@ SOFTWARE.
 #include	<X11/Xmu/Drawing.h>
 #include	<X11/Xmu/CurUtil.h>
 #include	<X11/Xmu/CharSet.h>
+#include <unistd.h>
 
 #ifndef X_NOT_POSIX
 #include <stdlib.h>
diff --git a/libXt/src/Error.c b/libXt/src/Error.c
index edec46e61..b2170557a 100644
--- a/libXt/src/Error.c
+++ b/libXt/src/Error.c
@@ -74,6 +74,7 @@ in this Software without prior written authorization from The Open Group.
 #include "IntrinsicI.h"
 #include <stdio.h>
 #include <stdlib.h>
+#include <unistd.h>
 
 /* The error handlers in the application context aren't used since we can't
    come up with a uniform way of using them.  If you can, define
diff --git a/libXt/src/Selection.c b/libXt/src/Selection.c
index 6040527bc..841e25a9e 100644
--- a/libXt/src/Selection.c
+++ b/libXt/src/Selection.c
@@ -76,6 +76,7 @@ in this Software without prior written authorization from The Open Group.
 #include "SelectionI.h"
 #include <X11/Xatom.h>
 #include <stdio.h>
+#include <unistd.h>
 
 void _XtSetDefaultSelectionTimeout(
 	unsigned long *timeout)
diff --git a/libXt/src/Shell.c b/libXt/src/Shell.c
index e0580ee4b..c0003a2a1 100644
--- a/libXt/src/Shell.c
+++ b/libXt/src/Shell.c
@@ -89,6 +89,7 @@ in this Software without prior written authorization from The Open Group.
 #endif
 #include <stdio.h>
 #include <stdlib.h>
+#include <unistd.h>
 
 #ifdef EDITRES
 #include <X11/Xmu/Editres.h>