environ.c: Include unistd.h.

        * runtime/environ.c: Include unistd.h.
        * runtime/pause.c: Test HAVE_UNISTD_H.
        * runtime/stop.c: Same.
        * io/open.c: Same.
        * io/unix.c: Same.
        * io/read.c (si_max): Protect declaration of value.

From-SVN: r198603

libgfortran/ChangeLog

+2013-05-04  David Edelsohn  <dje.gcc@gmail.com>
+
+	* runtime/environ.c: Include unistd.h.
+	* runtime/pause.c: Test HAVE_UNISTD_H.
+	* runtime/stop.c: Same.
+	* io/open.c: Same.
+	* io/unix.c: Same.
+	* io/read.c (si_max): Protect declaration of value.
+
 2013-04-29  Janne Blomqvist  <jb@gcc.gnu.org>
 
         * intrinsics/system_clock (gf_gettime_mono): Use variable

libgfortran/io/open.c

@@ -26,7 +26,11 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
 #include "io.h"
 #include "fbuf.h"
 #include "unix.h"
+
+#ifdef HAVE_UNISTD_H
 #include <unistd.h>
+#endif
+
 #include <string.h>
 #include <errno.h>
 #include <stdlib.h>

libgfortran/io/read.c

@@ -91,7 +91,9 @@ set_integer (void *dest, GFC_INTEGER_LARGEST value, int length)
 GFC_UINTEGER_LARGEST
 si_max (int length)
 {
+#if defined HAVE_GFC_REAL_16 || defined HAVE_GFC_REAL_10
   GFC_UINTEGER_LARGEST value;
+#endif
 
   switch (length)
       {

libgfortran/io/unix.c

@@ -30,7 +30,10 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
 #include <stdlib.h>
 #include <limits.h>
 
+#ifdef HAVE_UNISTD_H
 #include <unistd.h>
+#endif
+
 #include <sys/stat.h>
 #include <fcntl.h>
 #include <assert.h>

libgfortran/runtime/environ.c

@@ -28,6 +28,10 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
 #include <stdlib.h>
 #include <ctype.h>
 
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
 
 /* Environment scanner.  Examine the environment for controlling minor
  * aspects of the program's execution.  Our philosophy here that the

libgfortran/runtime/pause.c

@@ -25,7 +25,11 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
 
 #include "libgfortran.h"
 #include <string.h>
+
+#ifdef HAVE_UNISTD_H
 #include <unistd.h>
+#endif
+
 
 static void
 do_pause (void)

libgfortran/runtime/stop.c

@@ -26,7 +26,11 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
 #include "libgfortran.h"
 #include <stdlib.h>
 #include <string.h>
+
+#ifdef HAVE_UNISTD_H
 #include <unistd.h>
+#endif
+
 
 /* A numeric STOP statement.  */