* configure.ac (gcc_cv_ld_eh_gc_sections): Redirect objdump errors

[pf3gnuchains/gcc-fork.git] / libdecnumber / configure.ac

diff --git a/libdecnumber/configure.ac b/libdecnumber/configure.ac
index 90884a8..4d9060f 100644 (file)
--- a/libdecnumber/configure.ac
+++ b/libdecnumber/configure.ac
@@ -1,13 +1,13 @@
 # configure.ac for libdecnumber                        -*- Autoconf -*-
 # Process this file with autoconf to generate a configuration script.
 
-# Copyright 2005, 2006 Free Software Foundation, Inc.
+# Copyright 2005, 2006, 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
+# 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
@@ -16,11 +16,10 @@
 # License #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/>.
 
-AC_PREREQ(2.59)
+AC_PREREQ(2.64)
 AC_INIT(libdecnumber, [ ], gcc-bugs@gcc.gnu.org, libdecnumber)
 AC_CONFIG_SRCDIR(decNumber.h)
 AC_CONFIG_MACRO_DIR(../config)
@@ -71,6 +70,61 @@ else
 fi
 AC_SUBST(MAINT)
 
+AC_CANONICAL_TARGET
+
+# Default decimal format
+# If you change the defaults here, be sure to change them in the GCC directory also
+AC_MSG_CHECKING([for decimal floating point])
+AC_ARG_ENABLE(decimal-float,
+[  --enable-decimal-float={no,yes,bid,dpd}
+                       enable decimal float extension to C.  Selecting 'bid'
+                       or 'dpd' choses which decimal floating point format
+                       to use],
+[
+  case $enable_decimal_float in
+    yes | no | bid | dpd) ;;
+    *) AC_MSG_ERROR(['$enable_decimal_float' is an invalid value for --enable-decimal-float.
+Valid choices are 'yes', 'bid', 'dpd', and 'no'.]) ;;
+  esac
+],
+[
+  case $target in
+    powerpc*-*-linux* | i?86*-*-linux* | x86_64*-*-linux*)
+      enable_decimal_float=yes
+      ;;
+    *)
+      enable_decimal_float=no
+      ;;
+  esac
+])
+
+# x86's use BID format instead of DPD
+# In theory --enable-decimal-float=no should not compile anything
+# For the sake of simplicity, just use the default format in this directory
+if test x$enable_decimal_float = xyes -o x$enable_decimal_float = xno; then
+  case $target in
+    i?86*-*-linux* | x86_64*-*-linux*)
+      enable_decimal_float=bid
+      ;;
+    *)
+      enable_decimal_float=dpd
+      ;;
+  esac
+fi
+
+# If BID is being used, additional objects should be linked in.
+if test x$enable_decimal_float = xbid; then
+  ADDITIONAL_OBJS="$ADDITIONAL_OBJS \$(bid_OBJS)"
+else
+  ADDITIONAL_OBJS=
+fi
+
+AC_MSG_RESULT($enable_decimal_float)
+AC_SUBST(enable_decimal_float)
+AC_SUBST(ADDITIONAL_OBJS)
+
+AC_C_BIGENDIAN
+
 # Output.
 
 AC_CONFIG_HEADERS(config.h:config.in, [echo timestamp > stamp-h1])