[binutils-gdb] gdb: Drop use of obsolete AC_TYPE_SIGNAL

[Pedro Alves <palves at sourceware dot org>]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=14d88147787588b1473da05adf95980931fd3485

commit 14d88147787588b1473da05adf95980931fd3485
Author: Pedro Alves <palves@redhat.com>
Date:   Thu Aug 27 13:26:23 2015 +0100

    gdb: Drop use of obsolete AC_TYPE_SIGNAL
    
    Since we're using sighandler_t, nothing else refers to RETSIGTYPE in
    gdb.
    
    (Actually, given gdb/remote.c has been assuming signal handlers return
    void for a long time, we could have gotten get rid of this even
    without gnulib's sighandler_t.)
    
    gdb/ChangeLog:
    2015-08-27  Pedro Alves  <palves@redhat.com>
    
    	* configure.ac: Remove AC_TYPE_SIGNAL call.
    	* configure, config.in: Regenerate.

Diff:
---
 gdb/ChangeLog    |  5 +++++
 gdb/config.in    |  3 ---
 gdb/configure    | 33 ---------------------------------
 gdb/configure.ac |  1 -
 4 files changed, 5 insertions(+), 37 deletions(-)

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 8d40dee..d1b9ac9 100644
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,5 +1,10 @@
 2015-08-27  Pedro Alves  <palves@redhat.com>
 
+	* configure.ac: Remove AC_TYPE_SIGNAL call.
+	* configure, config.in: Regenerate.
+
+2015-08-27  Pedro Alves  <palves@redhat.com>
+
 	* cp-support.c (gdb_demangle): Use sighandler_t.  Remove cast.
 	* extension-priv.h: Include signal.h.
 	(struct signal_handler) <handler>: Change type to sighandler_t.
diff --git a/gdb/config.in b/gdb/config.in
index d188088..97ce5b6 100644
--- a/gdb/config.in
+++ b/gdb/config.in
@@ -677,9 +677,6 @@
 /* Bug reporting address */
 #undef REPORT_BUGS_TO
 
-/* Define as the return type of signal handlers (`int' or `void'). */
-#undef RETSIGTYPE
-
 /* Define to 1 if the "%Lg" format works to scan long doubles. */
 #undef SCANF_HAS_LONG_DOUBLE
 
diff --git a/gdb/configure b/gdb/configure
index e420c03..fd7ea1c 100755
--- a/gdb/configure
+++ b/gdb/configure
@@ -11094,39 +11094,6 @@ fi
 # Checks for types.  #
 # ------------------ #
 
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking return type of signal handlers" >&5
-$as_echo_n "checking return type of signal handlers... " >&6; }
-if test "${ac_cv_type_signal+set}" = set; then :
-  $as_echo_n "(cached) " >&6
-else
-  cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-#include <sys/types.h>
-#include <signal.h>
-
-int
-main ()
-{
-return *(signal (0, 0)) (0) == 1;
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
-  ac_cv_type_signal=int
-else
-  ac_cv_type_signal=void
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_type_signal" >&5
-$as_echo "$ac_cv_type_signal" >&6; }
-
-cat >>confdefs.h <<_ACEOF
-#define RETSIGTYPE $ac_cv_type_signal
-_ACEOF
-
-
 ac_fn_c_check_type "$LINENO" "socklen_t" "ac_cv_type_socklen_t" "#include <sys/types.h>
 #include <sys/socket.h>
 
diff --git a/gdb/configure.ac b/gdb/configure.ac
index 16bcd56..29d0b63 100644
--- a/gdb/configure.ac
+++ b/gdb/configure.ac
@@ -1339,7 +1339,6 @@ AC_CHECK_MEMBERS([struct stat.st_blocks, struct stat.st_blksize])
 # Checks for types.  #
 # ------------------ #
 
-AC_TYPE_SIGNAL
 AC_CHECK_TYPES(socklen_t, [], [],
 [#include <sys/types.h>
 #include <sys/socket.h>