Sync config/ from GCC:

--- config/ChangeLog
+++ config/ChangeLog
@@ -19,6 +19,10 @@
 	* tls.m4 (GCC_CHECK_TLS): Also test TLS in a shared library when
 	cross-compiling.

+2009-06-25  Olivier Hainque  <hainque@adacore.com>
+
+	* config/mh-ppc-aix (BOOT_ADAFLAGS): Remove -mminimal-toc.
+
 2009-05-26  Rafael Avila de Espindola  <espindola@google.com>

 	* plugins.m4: New.
@@ -39,6 +43,27 @@
 	"# no Tcl configs found".
 	(SC_LOAD_TKCONFIG): Similarily for TK_BIN_DIR.

+2009-04-09  Jakub Jelinek  <jakub@redhat.com>
+
+	* lead-dot.m4: Change copyright header to refer to version
+	3 of the GNU General Public License and to point readers at the
+	COPYING3 file and the FSF's license web page.
+	* warnings.m4: Likewise.
+
+2009-02-11  Kai Tietz  <kai.tietz@onevision.com>
+
+	* mh-cygwin (LDFLAGS): Add linker option to increase stack limit
+	up to 8MB.
+
+2009-01-23  Jie Zhang  <jie.zhang@analog.com>
+
+	* tls.m4 (GCC_CHECK_EMUTLS): Define.
+
+2008-12-21  Andrew Pinski  <pinskia@gmail.com>
+
+	PR target/38300
+	* unwind_ipinfo.m4: Darwin before 9 does not have _Unwind_GetIPInfo.
+
 2008-11-21  Kai Tietz  <kai.tietz@onevision.com>

 	Fix PR/25502

7 files changed, 67 insertions, 18 deletions

diff --git a/config/ChangeLog b/config/ChangeLog
index 809275e..c9a51dc 100644
--- a/config/ChangeLog
+++ b/config/ChangeLog
@@ -19,6 +19,10 @@
 	* tls.m4 (GCC_CHECK_TLS): Also test TLS in a shared library when
 	cross-compiling.
 
+2009-06-25  Olivier Hainque  <hainque@adacore.com>
+
+	* config/mh-ppc-aix (BOOT_ADAFLAGS): Remove -mminimal-toc.
+
 2009-05-26  Rafael Avila de Espindola  <espindola@google.com>
 
 	* plugins.m4: New.
@@ -39,6 +43,27 @@
 	"# no Tcl configs found".
 	(SC_LOAD_TKCONFIG): Similarily for TK_BIN_DIR.
 
+2009-04-09  Jakub Jelinek  <jakub@redhat.com>
+
+	* lead-dot.m4: Change copyright header to refer to version
+	3 of the GNU General Public License and to point readers at the
+	COPYING3 file and the FSF's license web page.
+	* warnings.m4: Likewise.
+
+2009-02-11  Kai Tietz  <kai.tietz@onevision.com>
+
+	* mh-cygwin (LDFLAGS): Add linker option to increase stack limit
+	up to 8MB.
+
+2009-01-23  Jie Zhang  <jie.zhang@analog.com>
+
+	* tls.m4 (GCC_CHECK_EMUTLS): Define.
+
+2008-12-21  Andrew Pinski  <pinskia@gmail.com>
+
+	PR target/38300
+	* unwind_ipinfo.m4: Darwin before 9 does not have _Unwind_GetIPInfo.
+
 2008-11-21  Kai Tietz  <kai.tietz@onevision.com>
 
 	Fix PR/25502
diff --git a/config/lead-dot.m4 b/config/lead-dot.m4
index e019030..123f541 100644
--- a/config/lead-dot.m4
+++ b/config/lead-dot.m4
@@ -1,9 +1,9 @@
 #                                                          -*- Autoconf -*-
-# Copyright (C) 2003  Free Software Foundation, Inc.
+# Copyright (C) 2003, 2009  Free Software Foundation, Inc.
 
 # This program is free software; you can redistribute it and/or modify
 # it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2, or (at your option)
+# the Free Software Foundation; either version 3, or (at your option)
 # any later version.
 
 # This program is distributed in the hope that it will be useful,
@@ -12,9 +12,8 @@
 # GNU General Public License for more details.
 
 # You should have received a copy of the GNU General Public License
-# along with this program; if not, write to the Free Software
-# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
-# 02110-1301, USA.
+# along with this program; see the file COPYING3.  If not see
+# <http://www.gnu.org/licenses/>.
 
 # serial 1
 
diff --git a/config/mh-cygwin b/config/mh-cygwin
index 6c3ab80..3a9698b 100644
--- a/config/mh-cygwin
+++ b/config/mh-cygwin
@@ -1,6 +1,9 @@
 EXTRA_TARGET_HOST_ALL_MODULES=maybe-all-libtermcap
 EXTRA_TARGET_HOST_INSTALL_MODULES=maybe-install-libtermcap
 
+# Increase stack limit to same as Linux default.
+LDFLAGS += -Wl,--stack,8388608
+
 all-gdb: maybe-all-libtermcap
 
 install-gdb: maybe-all-libtermcap
diff --git a/config/mh-ppc-aix b/config/mh-ppc-aix
index a56985f..4a97d81 100644
--- a/config/mh-ppc-aix
+++ b/config/mh-ppc-aix
@@ -1,9 +1,8 @@
-
-# Compile Ada files with minimal-toc in addition to the default flags (at
-# least -gnatg is required to compile language defined units).  The primary
-# focus is gnatlib, so that the library does not use nearly the entire TOC of
-# applications until gnatlib is built as a shared library on AIX.  Compiling
-# the compiler with -mminimal-toc does not cause any harm.
-BOOT_ADAFLAGS = -gnatapg -mminimal-toc
+# To prevent the Ada static runtime library from using nearly the entire
+# TOC, we used to compile Ada files with minimal-toc in addition to -gnatg
+# (mandatory to compile language defined units).  This incured a performance
+# penalty and is not required with section anchors enabled by default so we
+# don't do it any more.
+BOOT_ADAFLAGS = -gnatapg
 BOOT_LDFLAGS = -Wl,-bbigtoc
 LDFLAGS = `case $(CC) in *gcc*) echo -Wl,-bbigtoc ;; esac;`
diff --git a/config/tls.m4 b/config/tls.m4
index 79cf382..ef7e6d0 100644
--- a/config/tls.m4
+++ b/config/tls.m4
@@ -104,3 +104,21 @@ AC_DEFUN([GCC_CHECK_CC_TLS], [
     AC_DEFINE(HAVE_CC_TLS, 1,
 	      [Define to 1 if the target assembler supports thread-local storage.])
   fi])
+
+dnl Check whether TLS is emulated.
+AC_DEFUN([GCC_CHECK_EMUTLS], [
+  AC_CACHE_CHECK([whether the thread-local storage support is from emutls],
+  		 gcc_cv_use_emutls, [
+    gcc_cv_use_emutls=no
+    echo '__thread int a; int b; int main() { return a = b; }' > conftest.c
+    if AC_TRY_COMMAND(${CC-cc} -Werror -S -o conftest.s conftest.c 1>&AS_MESSAGE_LOG_FD); then
+      if grep __emutls_get_address conftest.s > /dev/null; then
+	gcc_cv_use_emutls=yes
+      fi
+    fi
+    rm -f conftest.*
+    ])
+  if test "$gcc_cv_use_emutls" = "yes" ; then
+    AC_DEFINE(USE_EMUTLS, 1,
+      	      [Define to 1 if the target use emutls for thread-local storage.])
+  fi])
diff --git a/config/unwind_ipinfo.m4 b/config/unwind_ipinfo.m4
index a1dc635..efc7990 100644
--- a/config/unwind_ipinfo.m4
+++ b/config/unwind_ipinfo.m4
@@ -22,7 +22,13 @@ AC_DEFUN([GCC_CHECK_UNWIND_GETIPINFO], [
       *) have_unwind_getipinfo=yes ;;
     esac
   else
-     have_unwind_getipinfo=yes
+    # Darwin before version 9 does not have _Unwind_GetIPInfo.
+    changequote(,)
+    case ${target} in
+      *-*-darwin[3-8]|*-*-darwin[3-8].*) have_unwind_getipinfo=no ;;
+      *) have_unwind_getipinfo=yes ;;
+    esac
+    changequote([,])
   fi
 
   if test x$have_unwind_getipinfo = xyes; then
diff --git a/config/warnings.m4 b/config/warnings.m4
index d3358b6..3801c85 100644
--- a/config/warnings.m4
+++ b/config/warnings.m4
@@ -1,12 +1,12 @@
 # Autoconf include file defining macros related to compile-time warnings.
 
-# Copyright 2004, 2005, 2007 Free Software Foundation, Inc.
+# Copyright 2004, 2005, 2007, 2009 Free Software Foundation, Inc.
 
 #This file is part of GCC.
 
 #GCC is free software; you can redistribute it and/or modify it under
 #the terms of the GNU General Public License as published by the Free
-#Software Foundation; either version 2, or (at your option) any later
+#Software Foundation; either version 3, or (at your option) any later
 #version.
 
 #GCC is distributed in the hope that it will be useful, but WITHOUT
@@ -15,9 +15,8 @@
 #for more details.
 
 #You should have received a copy of the GNU General Public License
-#along with GCC; see the file COPYING.  If not, write to the Free
-#Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
-#02110-1301, USA.
+#along with GCC; see the file COPYING3.  If not see
+#<http://www.gnu.org/licenses/>.
 
 # ACX_PROG_CC_WARNING_OPTS(WARNINGS, [VARIABLE = WARN_CFLAGS)
 #   Sets @VARIABLE@ to the subset of the given options which the