[HAVE_UNISTD_H]: Include unistd.h.

3 files changed, 12 insertions, 0 deletions

diff --git a/lib-src/movemail.c b/lib-src/movemail.c
index 1676e414e1d..7db92557637 100644
--- a/lib-src/movemail.c
+++ b/lib-src/movemail.c
@@ -71,6 +71,10 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
 #endif
 #endif /* USG */
 
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
 #ifdef XENIX
 #include <sys/locking.h>
 #endif
diff --git a/src/doc.c b/src/doc.c
index 8eccb66d18a..8859914972d 100644
--- a/src/doc.c
+++ b/src/doc.c
@@ -27,6 +27,10 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
 #include <fcntl.h>
 #endif
 
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
 #ifndef O_RDONLY
 #define O_RDONLY 0
 #endif
diff --git a/src/fileio.c b/src/fileio.c
index 487cb1184d3..cda88070d4a 100644
--- a/src/fileio.c
+++ b/src/fileio.c
@@ -22,6 +22,10 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
 #include <sys/types.h>
 #include <sys/stat.h>
 
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
 #if !defined (S_ISLNK) && defined (S_IFLNK)
 #  define S_ISLNK(m) (((m) & S_IFMT) == S_IFLNK)
 #endif