[4/10] RFC: unconditionally include signal.h

[Tom Tromey <tromey@redhat.com>]

I think that checking for signal.h is pointless, because gdb already
includes it unconditionally in various places -- e.g., utils.c.

This patch removes the useless check and updates the few spots that were
using HAVE_SIGNAL_H.

Tom

	* configure.ac: Don't check for signal.h.
	* config.in: Rebuild.
	* configure: Rebuild.
	* common/signals.c: Update.

	* configure.ac: Don't check for signal.h.
	* config.in: Rebuild.
	* configure: Rebuild.
	* gdbreplay.c: Update.
	* remote-utils.c: Update.
	* server.c: Update.
---
 gdb/common/signals.c         |    2 --
 gdb/config.in                |    3 ---
 gdb/configure                |    2 +-
 gdb/configure.ac             |    2 +-
 gdb/gdbserver/config.in      |    3 ---
 gdb/gdbserver/configure      |    2 +-
 gdb/gdbserver/configure.ac   |    2 +-
 gdb/gdbserver/gdbreplay.c    |    2 --
 gdb/gdbserver/remote-utils.c |    2 --
 gdb/gdbserver/server.c       |    2 --
 10 files changed, 4 insertions(+), 18 deletions(-)

diff --git a/gdb/common/signals.c b/gdb/common/signals.c
index 4ab863c..4541c8e 100644
--- a/gdb/common/signals.c
+++ b/gdb/common/signals.c
@@ -24,9 +24,7 @@
 #include <string.h>
 #endif
 
-#ifdef HAVE_SIGNAL_H
 #include <signal.h>
-#endif
 
 #include "gdb_signals.h"
 
diff --git a/gdb/configure.ac b/gdb/configure.ac
index 28291ff..58f715b 100644
--- a/gdb/configure.ac
+++ b/gdb/configure.ac
@@ -1074,7 +1074,7 @@ fi
 AC_HEADER_STDC
 # elf_hp.h is for HP/UX 64-bit shared library support.
 AC_CHECK_HEADERS([nlist.h machine/reg.h poll.h sys/poll.h proc_service.h \
-                  thread_db.h signal.h stddef.h \
+                  thread_db.h stddef.h \
 		  stdlib.h sys/fault.h \
 		  sys/file.h sys/filio.h sys/ioctl.h sys/param.h \
 		  sys/resource.h sys/procfs.h sys/ptrace.h ptrace.h \
diff --git a/gdb/gdbserver/configure.ac b/gdb/gdbserver/configure.ac
index 9b364ff..ecbb921 100644
--- a/gdb/gdbserver/configure.ac
+++ b/gdb/gdbserver/configure.ac
@@ -52,7 +52,7 @@ 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
 		 stdlib.h unistd.h dnl
-		 errno.h fcntl.h signal.h sys/file.h malloc.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)
 AC_CHECK_FUNCS(pread pwrite pread64 readlink)
diff --git a/gdb/gdbserver/gdbreplay.c b/gdb/gdbserver/gdbreplay.c
index 6034d93..2a48c04 100644
--- a/gdb/gdbserver/gdbreplay.c
+++ b/gdb/gdbserver/gdbreplay.c
@@ -25,9 +25,7 @@
 #if HAVE_SYS_FILE_H
 #include <sys/file.h>
 #endif
-#if HAVE_SIGNAL_H
 #include <signal.h>
-#endif
 #include <ctype.h>
 #if HAVE_FCNTL_H
 #include <fcntl.h>
diff --git a/gdb/gdbserver/remote-utils.c b/gdb/gdbserver/remote-utils.c
index adc8783..6f5d7ef 100644
--- a/gdb/gdbserver/remote-utils.c
+++ b/gdb/gdbserver/remote-utils.c
@@ -43,9 +43,7 @@
 #if HAVE_SYS_IOCTL_H
 #include <sys/ioctl.h>
 #endif
-#if HAVE_SIGNAL_H
 #include <signal.h>
-#endif
 #if HAVE_FCNTL_H
 #include <fcntl.h>
 #endif
diff --git a/gdb/gdbserver/server.c b/gdb/gdbserver/server.c
index fae9199..b08f1ba 100644
--- a/gdb/gdbserver/server.c
+++ b/gdb/gdbserver/server.c
@@ -24,9 +24,7 @@
 #if HAVE_UNISTD_H
 #include <unistd.h>
 #endif
-#if HAVE_SIGNAL_H
 #include <signal.h>
-#endif
 #include "gdb_wait.h"
 
 /* The thread set with an `Hc' packet.  `Hc' is deprecated in favor of
-- 
1.7.7.6