--- /dev/null
+diff -urN mpc-0.23.orig/m4/ax_append_link_flags.m4 mpc-0.23/m4/ax_append_link_flags.m4
+--- mpc-0.23.orig/m4/ax_append_link_flags.m4 1970-01-01 01:00:00.000000000 +0100
++++ mpc-0.23/m4/ax_append_link_flags.m4 2013-07-21 18:37:14.628220134 +0200
+@@ -0,0 +1,63 @@
++# ===========================================================================
++# http://www.gnu.org/software/autoconf-archive/ax_append_link_flags.html
++# ===========================================================================
++#
++# SYNOPSIS
++#
++# AX_APPEND_LINK_FLAGS([FLAG1 FLAG2 ...], [FLAGS-VARIABLE], [EXTRA-FLAGS])
++#
++# DESCRIPTION
++#
++# For every FLAG1, FLAG2 it is checked whether the linker works with the
++# flag. If it does, the flag is added FLAGS-VARIABLE
++#
++# If FLAGS-VARIABLE is not specified, the linker's flags (LDFLAGS) is
++# used. During the check the flag is always added to the linker's flags.
++#
++# If EXTRA-FLAGS is defined, it is added to the linker's default flags
++# when the check is done. The check is thus made with the flags: "LDFLAGS
++# EXTRA-FLAGS FLAG". This can for example be used to force the linker to
++# issue an error when a bad flag is given.
++#
++# NOTE: This macro depends on the AX_APPEND_FLAG and AX_CHECK_LINK_FLAG.
++# Please keep this macro in sync with AX_APPEND_COMPILE_FLAGS.
++#
++# LICENSE
++#
++# Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com>
++#
++# 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 3 of the License, or (at your
++# option) any later version.
++#
++# This program is distributed in the hope that it will be useful, but
++# WITHOUT ANY WARRANTY; without even the implied warranty of
++# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 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, see <http://www.gnu.org/licenses/>.
++#
++# As a special exception, the respective Autoconf Macro's copyright owner
++# gives unlimited permission to copy, distribute and modify the configure
++# scripts that are the output of Autoconf when processing the Macro. You
++# need not follow the terms of the GNU General Public License when using
++# or distributing such scripts, even though portions of the text of the
++# Macro appear in them. The GNU General Public License (GPL) does govern
++# all other use of the material that constitutes the Autoconf Macro.
++#
++# This special exception to the GPL applies to versions of the Autoconf
++# Macro released by the Autoconf Archive. When you make and distribute a
++# modified version of the Autoconf Macro, you may extend this special
++# exception to the GPL to apply to your modified version as well.
++
++#serial 3
++
++AC_DEFUN([AX_APPEND_LINK_FLAGS],
++[AC_REQUIRE([AX_CHECK_LINK_FLAG])
++AC_REQUIRE([AX_APPEND_FLAG])
++for flag in $1; do
++ AX_CHECK_LINK_FLAG([$flag], [AX_APPEND_FLAG([$flag], [m4_default([$2], [LDFLAGS])])], [], [$3])
++done
++])dnl AX_APPEND_LINK_FLAGS
+diff -urN mpc-0.23.orig/m4/ax_check_link_flag.m4 mpc-0.23/m4/ax_check_link_flag.m4
+--- mpc-0.23.orig/m4/ax_check_link_flag.m4 1970-01-01 01:00:00.000000000 +0100
++++ mpc-0.23/m4/ax_check_link_flag.m4 2013-07-21 18:37:23.158219873 +0200
+@@ -0,0 +1,71 @@
++# ===========================================================================
++# http://www.gnu.org/software/autoconf-archive/ax_check_link_flag.html
++# ===========================================================================
++#
++# SYNOPSIS
++#
++# AX_CHECK_LINK_FLAG(FLAG, [ACTION-SUCCESS], [ACTION-FAILURE], [EXTRA-FLAGS])
++#
++# DESCRIPTION
++#
++# Check whether the given FLAG works with the linker or gives an error.
++# (Warnings, however, are ignored)
++#
++# ACTION-SUCCESS/ACTION-FAILURE are shell commands to execute on
++# success/failure.
++#
++# If EXTRA-FLAGS is defined, it is added to the linker's default flags
++# when the check is done. The check is thus made with the flags: "LDFLAGS
++# EXTRA-FLAGS FLAG". This can for example be used to force the linker to
++# issue an error when a bad flag is given.
++#
++# NOTE: Implementation based on AX_CFLAGS_GCC_OPTION. Please keep this
++# macro in sync with AX_CHECK_{PREPROC,COMPILE}_FLAG.
++#
++# LICENSE
++#
++# Copyright (c) 2008 Guido U. Draheim <guidod@gmx.de>
++# Copyright (c) 2011 Maarten Bosmans <mkbosmans@gmail.com>
++#
++# 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 3 of the License, or (at your
++# option) any later version.
++#
++# This program is distributed in the hope that it will be useful, but
++# WITHOUT ANY WARRANTY; without even the implied warranty of
++# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 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, see <http://www.gnu.org/licenses/>.
++#
++# As a special exception, the respective Autoconf Macro's copyright owner
++# gives unlimited permission to copy, distribute and modify the configure
++# scripts that are the output of Autoconf when processing the Macro. You
++# need not follow the terms of the GNU General Public License when using
++# or distributing such scripts, even though portions of the text of the
++# Macro appear in them. The GNU General Public License (GPL) does govern
++# all other use of the material that constitutes the Autoconf Macro.
++#
++# This special exception to the GPL applies to versions of the Autoconf
++# Macro released by the Autoconf Archive. When you make and distribute a
++# modified version of the Autoconf Macro, you may extend this special
++# exception to the GPL to apply to your modified version as well.
++
++#serial 2
++
++AC_DEFUN([AX_CHECK_LINK_FLAG],
++[AS_VAR_PUSHDEF([CACHEVAR],[ax_cv_check_ldflags_$4_$1])dnl
++AC_CACHE_CHECK([whether the linker accepts $1], CACHEVAR, [
++ ax_check_save_flags=$LDFLAGS
++ LDFLAGS="$LDFLAGS $4 $1"
++ AC_LINK_IFELSE([AC_LANG_PROGRAM()],
++ [AS_VAR_SET(CACHEVAR,[yes])],
++ [AS_VAR_SET(CACHEVAR,[no])])
++ LDFLAGS=$ax_check_save_flags])
++AS_IF([test x"AS_VAR_GET(CACHEVAR)" = xyes],
++ [m4_default([$2], :)],
++ [m4_default([$3], :)])
++AS_VAR_POPDEF([CACHEVAR])dnl
++])dnl AX_CHECK_LINK_FLAGS