[7/10] RFC: don't check for unistd.h

[Tom Tromey <tromey at redhat dot com>]

unistd.h is also apparently available universally.

Tom

	* configure: Rebuild.
	* configure.ac: Don't check for unistd.h.
	* defs.h: Update.
	* tracepoint.c: Update.
	* utils.c: Update.

	* configure: Rebuild.
	* configure.ac: Don't check for unistd.h.
	* event-loop.c: Update.
	* gdbreplay.c: Update.
	* remote-utils.c: Update.
	* server.c: Update.
---
 gdb/defs.h                   |    2 --
 gdb/gdbserver/configure      |    2 +-
 gdb/gdbserver/configure.ac   |    1 -
 gdb/gdbserver/event-loop.c   |    2 --
 gdb/gdbserver/gdbreplay.c    |    2 --
 gdb/gdbserver/remote-utils.c |    2 --
 gdb/gdbserver/server.c       |    2 --
 gdb/tracepoint.c             |    2 --
 gdb/utils.c                  |    2 +-
 9 files changed, 2 insertions(+), 15 deletions(-)

diff --git a/gdb/defs.h b/gdb/defs.h
index 6d49d8f..3e54e27 100644
--- a/gdb/defs.h
+++ b/gdb/defs.h
@@ -51,9 +51,7 @@
 
 #include <stddef.h>
 
-#ifdef HAVE_UNISTD_H
 #include <unistd.h>
-#endif
 
 #include <fcntl.h>
 
diff --git a/gdb/gdbserver/configure.ac b/gdb/gdbserver/configure.ac
index a5d636a..5e7545e 100644
--- a/gdb/gdbserver/configure.ac
+++ b/gdb/gdbserver/configure.ac
@@ -51,7 +51,6 @@ ACX_CONFIGURE_DIR(["../gnulib"], ["build-gnulib-gdbserver"])
 
 AC_CHECK_HEADERS(sgtty.h termio.h termios.h sys/reg.h dnl
 		 proc_service.h sys/procfs.h thread_db.h linux/elf.h dnl
-		 unistd.h dnl
 		 errno.h fcntl.h sys/file.h malloc.h dnl
 		 sys/ioctl.h netinet/in.h sys/socket.h netdb.h dnl
 		 netinet/tcp.h arpa/inet.h sys/wait.h wait.h sys/un.h)
diff --git a/gdb/gdbserver/event-loop.c b/gdb/gdbserver/event-loop.c
index bcc9f1b..1ec946b 100644
--- a/gdb/gdbserver/event-loop.c
+++ b/gdb/gdbserver/event-loop.c
@@ -34,9 +34,7 @@
 #include <errno.h>
 #endif
 
-#ifdef HAVE_UNISTD_H
 #include <unistd.h>
-#endif
 
 typedef struct gdb_event gdb_event;
 typedef int (event_handler_func) (gdb_fildes_t);
diff --git a/gdb/gdbserver/gdbreplay.c b/gdb/gdbserver/gdbreplay.c
index 22ae9e4..42ccf95 100644
--- a/gdb/gdbserver/gdbreplay.c
+++ b/gdb/gdbserver/gdbreplay.c
@@ -35,9 +35,7 @@
 #endif
 #include <stdlib.h>
 #include <string.h>
-#ifdef HAVE_UNISTD_H
 #include <unistd.h>
-#endif
 #ifdef HAVE_NETINET_IN_H
 #include <netinet/in.h>
 #endif
diff --git a/gdb/gdbserver/remote-utils.c b/gdb/gdbserver/remote-utils.c
index 6f5d7ef..942a5c1 100644
--- a/gdb/gdbserver/remote-utils.c
+++ b/gdb/gdbserver/remote-utils.c
@@ -48,9 +48,7 @@
 #include <fcntl.h>
 #endif
 #include <sys/time.h>
-#if HAVE_UNISTD_H
 #include <unistd.h>
-#endif
 #if HAVE_ARPA_INET_H
 #include <arpa/inet.h>
 #endif
diff --git a/gdb/gdbserver/server.c b/gdb/gdbserver/server.c
index b08f1ba..427f40d 100644
--- a/gdb/gdbserver/server.c
+++ b/gdb/gdbserver/server.c
@@ -21,9 +21,7 @@
 #include "gdbthread.h"
 #include "agent.h"
 
-#if HAVE_UNISTD_H
 #include <unistd.h>
-#endif
 #include <signal.h>
 #include "gdb_wait.h"
 
diff --git a/gdb/tracepoint.c b/gdb/tracepoint.c
index 57e001b..36efe83 100644
--- a/gdb/tracepoint.c
+++ b/gdb/tracepoint.c
@@ -61,9 +61,7 @@
 /* readline defines this.  */
 #undef savestring
 
-#ifdef HAVE_UNISTD_H
 #include <unistd.h>
-#endif
 
 #ifndef O_LARGEFILE
 #define O_LARGEFILE 0
diff --git a/gdb/utils.c b/gdb/utils.c
index 8e781fc..316cbd6 100644
--- a/gdb/utils.c
+++ b/gdb/utils.c
@@ -3225,7 +3225,7 @@ gdb_realpath (const char *filename)
      pathconf()) making it impossible to pass a correctly sized buffer
      to realpath() (it could always overflow).  On those systems, we
      skip this.  */
-#if defined (HAVE_REALPATH) && defined (HAVE_UNISTD_H) && defined(HAVE_ALLOCA)
+#if defined (HAVE_REALPATH) && defined(HAVE_ALLOCA)
   {
     /* Find out the max path size.  */
     long path_max = pathconf ("/", _PC_PATH_MAX);
-- 
1.7.7.6