fix musl compile

4 files changed, 109934 insertions, 2 deletions

diff --git a/package/m4/patches/musl.patch b/package/m4/patches/musl.patch
new file mode 100644
index 000000000..f8bc4560d
--- /dev/null
+++ b/package/m4/patches/musl.patch
@@ -0,0 +1,109879 @@
+diff -Nur m4-1.4.16.orig/aclocal.m4 m4-1.4.16/aclocal.m4
+--- m4-1.4.16.orig/aclocal.m4	2011-03-01 17:57:30.000000000 +0100
++++ m4-1.4.16/aclocal.m4	2013-09-04 14:47:42.000000000 +0200
+@@ -1,7 +1,7 @@
+-# generated automatically by aclocal 1.11.1 -*- Autoconf -*-
++# generated automatically by aclocal 1.13.2 -*- Autoconf -*-
++
++# Copyright (C) 1996-2013 Free Software Foundation, Inc.
+ 
+-# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
+-# 2005, 2006, 2007, 2008, 2009  Free Software Foundation, Inc.
+ # This file is free software; the Free Software Foundation
+ # gives unlimited permission to copy and/or distribute it,
+ # with or without modifications, as long as this notice is preserved.
+@@ -11,16 +11,17 @@
+ # even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+ # PARTICULAR PURPOSE.
+ 
++m4_ifndef([AC_CONFIG_MACRO_DIRS], [m4_defun([_AM_CONFIG_MACRO_DIRS], [])m4_defun([AC_CONFIG_MACRO_DIRS], [_AM_CONFIG_MACRO_DIRS($@)])])
+ m4_ifndef([AC_AUTOCONF_VERSION],
+   [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl
+-m4_if(m4_defn([AC_AUTOCONF_VERSION]), [2.66],,
+-[m4_warning([this file was generated for autoconf 2.66.
++m4_if(m4_defn([AC_AUTOCONF_VERSION]), [2.69],,
++[m4_warning([this file was generated for autoconf 2.69.
+ You have another version of autoconf.  It may work, but is not guaranteed to.
+ If you have problems, you may need to regenerate the build system entirely.
+-To do so, use the procedure documented by the package, typically `autoreconf'.])])
++To do so, use the procedure documented by the package, typically 'autoreconf'.])])
+ 
+-# po.m4 serial 17 (gettext-0.18)
+-dnl Copyright (C) 1995-2010 Free Software Foundation, Inc.
++# po.m4 serial 20 (gettext-0.18.2)
++dnl Copyright (C) 1995-2013 Free Software Foundation, Inc.
+ dnl This file is free software; the Free Software Foundation
+ dnl gives unlimited permission to copy and/or distribute it,
+ dnl with or without modifications, as long as this notice is preserved.
+@@ -38,14 +39,14 @@
+ dnl   Ulrich Drepper <drepper@cygnus.com>, 1995-2000.
+ dnl   Bruno Haible <haible@clisp.cons.org>, 2000-2003.
+ 
+-AC_PREREQ([2.50])
++AC_PREREQ([2.60])
+ 
+ dnl Checks for all prerequisites of the po subdirectory.
+ AC_DEFUN([AM_PO_SUBDIRS],
+ [
+   AC_REQUIRE([AC_PROG_MAKE_SET])dnl
+   AC_REQUIRE([AC_PROG_INSTALL])dnl
+-  AC_REQUIRE([AM_PROG_MKDIR_P])dnl defined by automake
++  AC_REQUIRE([AC_PROG_MKDIR_P])dnl
+   AC_REQUIRE([AM_NLS])dnl
+ 
+   dnl Release version of the gettext macros. This is used to ensure that
+@@ -123,7 +124,7 @@
+       case "$ac_file" in */Makefile.in)
+         # Adjust a relative srcdir.
+         ac_dir=`echo "$ac_file"|sed 's%/[^/][^/]*$%%'`
+-        ac_dir_suffix="/`echo "$ac_dir"|sed 's%^\./%%'`"
++        ac_dir_suffix=/`echo "$ac_dir"|sed 's%^\./%%'`
+         ac_dots=`echo "$ac_dir_suffix"|sed 's%/[^/]*%../%g'`
+         # In autoconf-2.13 it is called $ac_given_srcdir.
+         # In autoconf-2.50 it is called $srcdir.
+@@ -139,7 +140,8 @@
+         if test -f "$ac_given_srcdir/$ac_dir/POTFILES.in"; then
+           rm -f "$ac_dir/POTFILES"
+           test -n "$as_me" && echo "$as_me: creating $ac_dir/POTFILES" || echo "creating $ac_dir/POTFILES"
+-          cat "$ac_given_srcdir/$ac_dir/POTFILES.in" | sed -e "/^#/d" -e "/^[ 	]*\$/d" -e "s,.*,     $top_srcdir/& \\\\," | sed -e "\$s/\(.*\) \\\\/\1/" > "$ac_dir/POTFILES"
++          gt_tab=`printf '\t'`
++          cat "$ac_given_srcdir/$ac_dir/POTFILES.in" | sed -e "/^#/d" -e "/^[ ${gt_tab}]*\$/d" -e "s,.*,     $top_srcdir/& \\\\," | sed -e "\$s/\(.*\) \\\\/\1/" > "$ac_dir/POTFILES"
+           POMAKEFILEDEPS="POTFILES.in"
+           # ALL_LINGUAS, POFILES, UPDATEPOFILES, DUMMYPOFILES, GMOFILES depend
+           # on $ac_dir but don't depend on user-specified configuration
+@@ -150,12 +152,12 @@
+               test -n "$as_me" && echo "$as_me: setting ALL_LINGUAS in configure.in is obsolete" || echo "setting ALL_LINGUAS in configure.in is obsolete"
+             fi
+             ALL_LINGUAS_=`sed -e "/^#/d" -e "s/#.*//" "$ac_given_srcdir/$ac_dir/LINGUAS"`
+-            # Hide the ALL_LINGUAS assigment from automake < 1.5.
++            # Hide the ALL_LINGUAS assignment from automake < 1.5.
+             eval 'ALL_LINGUAS''=$ALL_LINGUAS_'
+             POMAKEFILEDEPS="$POMAKEFILEDEPS LINGUAS"
+           else
+             # The set of available languages was given in configure.in.
+-            # Hide the ALL_LINGUAS assigment from automake < 1.5.
++            # Hide the ALL_LINGUAS assignment from automake < 1.5.
+             eval 'ALL_LINGUAS''=$OBSOLETE_ALL_LINGUAS'
+           fi
+           # Compute POFILES
+@@ -247,7 +249,7 @@
+ changequote(,)dnl
+   # Adjust a relative srcdir.
+   ac_dir=`echo "$ac_file"|sed 's%/[^/][^/]*$%%'`
+-  ac_dir_suffix="/`echo "$ac_dir"|sed 's%^\./%%'`"
++  ac_dir_suffix=/`echo "$ac_dir"|sed 's%^\./%%'`
+   ac_dots=`echo "$ac_dir_suffix"|sed 's%/[^/]*%../%g'`
+   # In autoconf-2.13 it is called $ac_given_srcdir.
+   # In autoconf-2.50 it is called $srcdir.
+@@ -275,6 +277,7 @@
+   fi
+ 
+   # A sed script that extracts the value of VARIABLE from a Makefile.
++  tab=`printf '\t'`
+   sed_x_variable='
+ # Test if the hold space is empty.
+ x
+@@ -282,9 +285,9 @@
+ x
+ ta
+ # Yes it was empty. Look if we have the expected variable definition.
+-/^[	 ]*VARIABLE[	 ]*=/{
++/^['"${tab}"' ]*VARIABLE['"${tab}"' ]*=/{
+   # Seen the first line of the variable definition.
+-  s/^[	 ]*VARIABLE[	 ]*=//
++  s/^['"${tab}"' ]*VARIABLE['"${tab}"' ]*=//
+   ba
+ }
+ bd
+@@ -336,7 +339,7 @@
+     sed_x_LINGUAS=`$gt_echo "$sed_x_variable" | sed -e '/^ *#/d' -e 's/VARIABLE/LINGUAS/g'`
+     ALL_LINGUAS_=`sed -n -e "$sed_x_LINGUAS" < "$ac_file"`
+   fi
+-  # Hide the ALL_LINGUAS assigment from automake < 1.5.
++  # Hide the ALL_LINGUAS assignment from automake < 1.5.
+   eval 'ALL_LINGUAS''=$ALL_LINGUAS_'
+   # Compute POFILES
+   # as      $(foreach lang, $(ALL_LINGUAS), $(srcdir)/$(lang).po)
+@@ -426,14 +429,15 @@
+   fi
+ 
+   sed -e "s|@POTFILES_DEPS@|$POTFILES_DEPS|g" -e "s|@POFILES@|$POFILES|g" -e "s|@UPDATEPOFILES@|$UPDATEPOFILES|g" -e "s|@DUMMYPOFILES@|$DUMMYPOFILES|g" -e "s|@GMOFILES@|$GMOFILES|g" -e "s|@PROPERTIESFILES@|$PROPERTIESFILES|g" -e "s|@CLASSFILES@|$CLASSFILES|g" -e "s|@QMFILES@|$QMFILES|g" -e "s|@MSGFILES@|$MSGFILES|g" -e "s|@RESOURCESDLLFILES@|$RESOURCESDLLFILES|g" -e "s|@CATALOGS@|$CATALOGS|g" -e "s|@JAVACATALOGS@|$JAVACATALOGS|g" -e "s|@QTCATALOGS@|$QTCATALOGS|g" -e "s|@TCLCATALOGS@|$TCLCATALOGS|g" -e "s|@CSHARPCATALOGS@|$CSHARPCATALOGS|g" -e 's,^#distdir:,distdir:,' < "$ac_file" > "$ac_file.tmp"
++  tab=`printf '\t'`
+   if grep -l '@TCLCATALOGS@' "$ac_file" > /dev/null; then
+     # Add dependencies that cannot be formulated as a simple suffix rule.
+     for lang in $ALL_LINGUAS; do
+       frobbedlang=`echo $lang | sed -e 's/\..*$//' -e 'y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/'`
+       cat >> "$ac_file.tmp" <<EOF
+ $frobbedlang.msg: $lang.po
+-	@echo "\$(MSGFMT) -c --tcl -d \$(srcdir) -l $lang $srcdirpre$lang.po"; \
+-	\$(MSGFMT) -c --tcl -d "\$(srcdir)" -l $lang $srcdirpre$lang.po || { rm -f "\$(srcdir)/$frobbedlang.msg"; exit 1; }
++${tab}@echo "\$(MSGFMT) -c --tcl -d \$(srcdir) -l $lang $srcdirpre$lang.po"; \
++${tab}\$(MSGFMT) -c --tcl -d "\$(srcdir)" -l $lang $srcdirpre$lang.po || { rm -f "\$(srcdir)/$frobbedlang.msg"; exit 1; }
+ EOF
+     done
+   fi
+@@ -443,8 +447,8 @@
+       frobbedlang=`echo $lang | sed -e 's/_/-/g' -e 's/^sr-CS/sr-SP/' -e 's/@latin$/-Latn/' -e 's/@cyrillic$/-Cyrl/' -e 's/^sr-SP$/sr-SP-Latn/' -e 's/^uz-UZ$/uz-UZ-Latn/'`
+       cat >> "$ac_file.tmp" <<EOF
+ $frobbedlang/\$(DOMAIN).resources.dll: $lang.po
+-	@echo "\$(MSGFMT) -c --csharp -d \$(srcdir) -l $lang $srcdirpre$lang.po -r \$(DOMAIN)"; \
+-	\$(MSGFMT) -c --csharp -d "\$(srcdir)" -l $lang $srcdirpre$lang.po -r "\$(DOMAIN)" || { rm -f "\$(srcdir)/$frobbedlang.msg"; exit 1; }
++${tab}@echo "\$(MSGFMT) -c --csharp -d \$(srcdir) -l $lang $srcdirpre$lang.po -r \$(DOMAIN)"; \
++${tab}\$(MSGFMT) -c --csharp -d "\$(srcdir)" -l $lang $srcdirpre$lang.po -r "\$(DOMAIN)" || { rm -f "\$(srcdir)/$frobbedlang.msg"; exit 1; }
+ EOF
+     done
+   fi
+@@ -469,7 +473,7 @@
+   XGETTEXT_EXTRA_OPTIONS="$XGETTEXT_EXTRA_OPTIONS $1"
+ ])
+ 
+-# Copyright (C) 2002, 2003, 2005, 2006, 2007, 2008  Free Software Foundation, Inc.
++# Copyright (C) 2002-2013 Free Software Foundation, Inc.
+ #
+ # This file is free software; the Free Software Foundation
+ # gives unlimited permission to copy and/or distribute it,
+@@ -481,10 +485,10 @@
+ # generated from the m4 files accompanying Automake X.Y.
+ # (This private macro should not be called outside this file.)
+ AC_DEFUN([AM_AUTOMAKE_VERSION],
+-[am__api_version='1.11'
++[am__api_version='1.13'
+ dnl Some users find AM_AUTOMAKE_VERSION and mistake it for a way to
+ dnl require some minimum version.  Point them to the right macro.
+-m4_if([$1], [1.11.1], [],
++m4_if([$1], [1.13.2], [],
+       [AC_FATAL([Do not call $0, use AM_INIT_AUTOMAKE([$1]).])])dnl
+ ])
+ 
+@@ -500,22 +504,22 @@
+ # Call AM_AUTOMAKE_VERSION and AM_AUTOMAKE_VERSION so they can be traced.
+ # This function is AC_REQUIREd by AM_INIT_AUTOMAKE.
+ AC_DEFUN([AM_SET_CURRENT_AUTOMAKE_VERSION],
+-[AM_AUTOMAKE_VERSION([1.11.1])dnl
++[AM_AUTOMAKE_VERSION([1.13.2])dnl
+ m4_ifndef([AC_AUTOCONF_VERSION],
+   [m4_copy([m4_PACKAGE_VERSION], [AC_AUTOCONF_VERSION])])dnl
+ _AM_AUTOCONF_VERSION(m4_defn([AC_AUTOCONF_VERSION]))])
+ 
+ # AM_AUX_DIR_EXPAND                                         -*- Autoconf -*-
+ 
+-# Copyright (C) 2001, 2003, 2005  Free Software Foundation, Inc.
++# Copyright (C) 2001-2013 Free Software Foundation, Inc.
+ #
+ # This file is free software; the Free Software Foundation
+ # gives unlimited permission to copy and/or distribute it,
+ # with or without modifications, as long as this notice is preserved.
+ 
+ # For projects using AC_CONFIG_AUX_DIR([foo]), Autoconf sets
+-# $ac_aux_dir to `$srcdir/foo'.  In other projects, it is set to
+-# `$srcdir', `$srcdir/..', or `$srcdir/../..'.
++# $ac_aux_dir to '$srcdir/foo'.  In other projects, it is set to
++# '$srcdir', '$srcdir/..', or '$srcdir/../..'.
+ #
+ # Of course, Automake must honor this variable whenever it calls a
+ # tool from the auxiliary directory.  The problem is that $srcdir (and
+@@ -534,7 +538,7 @@
+ #
+ # The reason of the latter failure is that $top_srcdir and $ac_aux_dir
+ # are both prefixed by $srcdir.  In an in-source build this is usually
+-# harmless because $srcdir is `.', but things will broke when you
++# harmless because $srcdir is '.', but things will broke when you
+ # start a VPATH build or use an absolute $srcdir.
+ #
+ # So we could use something similar to $top_srcdir/$ac_aux_dir/missing,
+@@ -560,22 +564,19 @@
+ 
+ # AM_CONDITIONAL                                            -*- Autoconf -*-
+ 
+-# Copyright (C) 1997, 2000, 2001, 2003, 2004, 2005, 2006, 2008
+-# Free Software Foundation, Inc.
++# Copyright (C) 1997-2013 Free Software Foundation, Inc.
+ #
+ # This file is free software; the Free Software Foundation
+ # gives unlimited permission to copy and/or distribute it,
+ # with or without modifications, as long as this notice is preserved.
+ 
+-# serial 9
+-
+ # AM_CONDITIONAL(NAME, SHELL-CONDITION)
+ # -------------------------------------
+ # Define a conditional.
+ AC_DEFUN([AM_CONDITIONAL],
+-[AC_PREREQ(2.52)dnl
+- ifelse([$1], [TRUE],  [AC_FATAL([$0: invalid condition: $1])],
+-	[$1], [FALSE], [AC_FATAL([$0: invalid condition: $1])])dnl
++[AC_PREREQ([2.52])dnl
++ m4_if([$1], [TRUE],  [AC_FATAL([$0: invalid condition: $1])],
++       [$1], [FALSE], [AC_FATAL([$0: invalid condition: $1])])dnl
+ AC_SUBST([$1_TRUE])dnl
+ AC_SUBST([$1_FALSE])dnl
+ _AM_SUBST_NOTMAKE([$1_TRUE])dnl
+@@ -594,16 +595,14 @@
+ Usually this means the macro was only invoked conditionally.]])
+ fi])])
+ 
+-# Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2009
+-# Free Software Foundation, Inc.
++# Copyright (C) 1999-2013 Free Software Foundation, Inc.
+ #
+ # This file is free software; the Free Software Foundation
+ # gives unlimited permission to copy and/or distribute it,
+ # with or without modifications, as long as this notice is preserved.
+ 
+-# serial 10
+ 
+-# There are a few dirty hacks below to avoid letting `AC_PROG_CC' be
++# There are a few dirty hacks below to avoid letting 'AC_PROG_CC' be
+ # written in clear, in which case automake, when reading aclocal.m4,
+ # will think it sees a *use*, and therefore will trigger all it's
+ # C support machinery.  Also note that it means that autoscan, seeing
+@@ -613,7 +612,7 @@
+ # _AM_DEPENDENCIES(NAME)
+ # ----------------------
+ # See how the compiler implements dependency checking.
+-# NAME is "CC", "CXX", "GCJ", or "OBJC".
++# NAME is "CC", "CXX", "OBJC", "OBJCXX", "UPC", or "GJC".
+ # We try a few techniques and use that to set a single cache variable.
+ #
+ # We don't AC_REQUIRE the corresponding AC_PROG_CC since the latter was
+@@ -626,12 +625,13 @@
+ AC_REQUIRE([AM_MAKE_INCLUDE])dnl
+ AC_REQUIRE([AM_DEP_TRACK])dnl
+ 
+-ifelse([$1], CC,   [depcc="$CC"   am_compiler_list=],
+-       [$1], CXX,  [depcc="$CXX"  am_compiler_list=],
+-       [$1], OBJC, [depcc="$OBJC" am_compiler_list='gcc3 gcc'],
+-       [$1], UPC,  [depcc="$UPC"  am_compiler_list=],
+-       [$1], GCJ,  [depcc="$GCJ"  am_compiler_list='gcc3 gcc'],
+-                   [depcc="$$1"   am_compiler_list=])
++m4_if([$1], [CC],   [depcc="$CC"   am_compiler_list=],
++      [$1], [CXX],  [depcc="$CXX"  am_compiler_list=],
++      [$1], [OBJC], [depcc="$OBJC" am_compiler_list='gcc3 gcc'],
++      [$1], [OBJCXX], [depcc="$OBJCXX" am_compiler_list='gcc3 gcc'],
++      [$1], [UPC],  [depcc="$UPC"  am_compiler_list=],
++      [$1], [GCJ],  [depcc="$GCJ"  am_compiler_list='gcc3 gcc'],
++                    [depcc="$$1"   am_compiler_list=])
+ 
+ AC_CACHE_CHECK([dependency style of $depcc],
+                [am_cv_$1_dependencies_compiler_type],
+@@ -639,8 +639,9 @@
+   # We make a subdir and do the tests there.  Otherwise we can end up
+   # making bogus files that we don't know about and never remove.  For
+   # instance it was reported that on HP-UX the gcc test will end up
+-  # making a dummy file named `D' -- because `-MD' means `put the output
+-  # in D'.
++  # making a dummy file named 'D' -- because '-MD' means "put the output
++  # in D".
++  rm -rf conftest.dir
+   mkdir conftest.dir
+   # Copy depcomp to subdir because otherwise we won't find it if we're
+   # using a relative directory.
+@@ -679,16 +680,16 @@
+     : > sub/conftest.c
+     for i in 1 2 3 4 5 6; do
+       echo '#include "conftst'$i'.h"' >> sub/conftest.c
+-      # Using `: > sub/conftst$i.h' creates only sub/conftst1.h with
+-      # Solaris 8's {/usr,}/bin/sh.
+-      touch sub/conftst$i.h
++      # Using ": > sub/conftst$i.h" creates only sub/conftst1.h with
++      # Solaris 10 /bin/sh.
++      echo '/* dummy */' > sub/conftst$i.h
+     done
+     echo "${am__include} ${am__quote}sub/conftest.Po${am__quote}" > confmf
+ 
+-    # We check with `-c' and `-o' for the sake of the "dashmstdout"
++    # We check with '-c' and '-o' for the sake of the "dashmstdout"
+     # mode.  It turns out that the SunPro C++ compiler does not properly
+-    # handle `-M -o', and we need to detect this.  Also, some Intel
+-    # versions had trouble with output in subdirs
++    # handle '-M -o', and we need to detect this.  Also, some Intel
++    # versions had trouble with output in subdirs.
+     am__obj=sub/conftest.${OBJEXT-o}
+     am__minus_obj="-o $am__obj"
+     case $depmode in
+@@ -697,16 +698,16 @@
+       test "$am__universal" = false || continue
+       ;;
+     nosideeffect)
+-      # after this tag, mechanisms are not by side-effect, so they'll
+-      # only be used when explicitly requested
++      # After this tag, mechanisms are not by side-effect, so they'll
++      # only be used when explicitly requested.
+       if test "x$enable_dependency_tracking" = xyes; then
+ 	continue
+       else
+ 	break
+       fi
+       ;;
+-    msvisualcpp | msvcmsys)
+-      # This compiler won't grok `-c -o', but also, the minuso test has
++    msvc7 | msvc7msys | msvisualcpp | msvcmsys)
++      # This compiler won't grok '-c -o', but also, the minuso test has
+       # not run yet.  These depmodes are late enough in the game, and
+       # so weak that their functioning should not be impacted.
+       am__obj=conftest.${OBJEXT-o}
+@@ -754,7 +755,7 @@
+ # AM_SET_DEPDIR
+ # -------------
+ # Choose a directory name for dependency files.
+-# This macro is AC_REQUIREd in _AM_DEPENDENCIES
++# This macro is AC_REQUIREd in _AM_DEPENDENCIES.
+ AC_DEFUN([AM_SET_DEPDIR],
+ [AC_REQUIRE([AM_SET_LEADING_DOT])dnl
+ AC_SUBST([DEPDIR], ["${am__leading_dot}deps"])dnl
+@@ -764,34 +765,39 @@
+ # AM_DEP_TRACK
+ # ------------
+ AC_DEFUN([AM_DEP_TRACK],
+-[AC_ARG_ENABLE(dependency-tracking,
+-[  --disable-dependency-tracking  speeds up one-time build
+-  --enable-dependency-tracking   do not reject slow dependency extractors])
++[AC_ARG_ENABLE([dependency-tracking], [dnl
++AS_HELP_STRING(
++  [--enable-dependency-tracking],
++  [do not reject slow dependency extractors])
++AS_HELP_STRING(
++  [--disable-dependency-tracking],
++  [speeds up one-time build])])
+ if test "x$enable_dependency_tracking" != xno; then
+   am_depcomp="$ac_aux_dir/depcomp"
+   AMDEPBACKSLASH='\'
++  am__nodep='_no'
+ fi
+ AM_CONDITIONAL([AMDEP], [test "x$enable_dependency_tracking" != xno])
+ AC_SUBST([AMDEPBACKSLASH])dnl
+ _AM_SUBST_NOTMAKE([AMDEPBACKSLASH])dnl
++AC_SUBST([am__nodep])dnl
++_AM_SUBST_NOTMAKE([am__nodep])dnl
+ ])
+ 
+ # Generate code to set up dependency tracking.              -*- Autoconf -*-
+ 
+-# Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2008
+-# Free Software Foundation, Inc.
++# Copyright (C) 1999-2013 Free Software Foundation, Inc.
+ #
+ # This file is free software; the Free Software Foundation
+ # gives unlimited permission to copy and/or distribute it,
+ # with or without modifications, as long as this notice is preserved.
+ 
+-#serial 5
+ 
+ # _AM_OUTPUT_DEPENDENCY_COMMANDS
+ # ------------------------------
+ AC_DEFUN([_AM_OUTPUT_DEPENDENCY_COMMANDS],
+ [{
+-  # Autoconf 2.62 quotes --file arguments for eval, but not when files
++  # Older Autoconf quotes --file arguments for eval, but not when files
+   # are listed without --file.  Let's play safe and only enable the eval
+   # if we detect the quoting.
+   case $CONFIG_FILES in
+@@ -804,7 +810,7 @@
+     # Strip MF so we end up with the name of the file.
+     mf=`echo "$mf" | sed -e 's/:.*$//'`
+     # Check whether this is an Automake generated Makefile or not.
+-    # We used to match only the files named `Makefile.in', but
++    # We used to match only the files named 'Makefile.in', but
+     # some people rename them; so instead we look at the file content.
+     # Grep'ing the first line is not enough: some people post-process
+     # each Makefile.in and add a new line on top of each file to say so.
+@@ -816,21 +822,19 @@
+       continue
+     fi
+     # Extract the definition of DEPDIR, am__include, and am__quote
+-    # from the Makefile without running `make'.
++    # from the Makefile without running 'make'.
+     DEPDIR=`sed -n 's/^DEPDIR = //p' < "$mf"`
+     test -z "$DEPDIR" && continue
+     am__include=`sed -n 's/^am__include = //p' < "$mf"`
+-    test -z "am__include" && continue
++    test -z "$am__include" && continue
+     am__quote=`sed -n 's/^am__quote = //p' < "$mf"`
+-    # When using ansi2knr, U may be empty or an underscore; expand it
+-    U=`sed -n 's/^U = //p' < "$mf"`
+     # Find all dependency output files, they are included files with
+     # $(DEPDIR) in their names.  We invoke sed twice because it is the
+     # simplest approach to changing $(DEPDIR) to its actual value in the
+     # expansion.
+     for file in `sed -n "
+       s/^$am__include $am__quote\(.*(DEPDIR).*\)$am__quote"'$/\1/p' <"$mf" | \
+-	 sed -e 's/\$(DEPDIR)/'"$DEPDIR"'/g' -e 's/\$U/'"$U"'/g'`; do
++	 sed -e 's/\$(DEPDIR)/'"$DEPDIR"'/g'`; do
+       # Make sure the directory exists.
+       test -f "$dirpart/$file" && continue
+       fdir=`AS_DIRNAME(["$file"])`
+@@ -848,7 +852,7 @@
+ # This macro should only be invoked once -- use via AC_REQUIRE.
+ #
+ # This code is only required when automatic dependency tracking
+-# is enabled.  FIXME.  This creates each `.P' file that we will
++# is enabled.  FIXME.  This creates each '.P' file that we will
+ # need in order to bootstrap the dependency handling code.
+ AC_DEFUN([AM_OUTPUT_DEPENDENCY_COMMANDS],
+ [AC_CONFIG_COMMANDS([depfiles],
+@@ -858,15 +862,12 @@
+ 
+ # Do all the work for Automake.                             -*- Autoconf -*-
+ 
+-# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
+-# 2005, 2006, 2008, 2009 Free Software Foundation, Inc.
++# Copyright (C) 1996-2013 Free Software Foundation, Inc.
+ #
+ # This file is free software; the Free Software Foundation
+ # gives unlimited permission to copy and/or distribute it,
+ # with or without modifications, as long as this notice is preserved.
+ 
+-# serial 16
+-
+ # This macro actually does too much.  Some checks are only needed if
+ # your package does certain things.  But this isn't really a big deal.
+ 
+@@ -882,7 +883,7 @@
+ # arguments mandatory, and then we can depend on a new Autoconf
+ # release and drop the old call support.
+ AC_DEFUN([AM_INIT_AUTOMAKE],
+-[AC_PREREQ([2.62])dnl
++[AC_PREREQ([2.65])dnl
+ dnl Autoconf wants to disallow AM_ names.  We explicitly allow
+ dnl the ones we care about.
+ m4_pattern_allow([^AM_[A-Z]+FLAGS$])dnl
+@@ -911,31 +912,40 @@
+ # Define the identity of the package.
+ dnl Distinguish between old-style and new-style calls.
+ m4_ifval([$2],
+-[m4_ifval([$3], [_AM_SET_OPTION([no-define])])dnl
++[AC_DIAGNOSE([obsolete],
++             [$0: two- and three-arguments forms are deprecated.])
++m4_ifval([$3], [_AM_SET_OPTION([no-define])])dnl
+  AC_SUBST([PACKAGE], [$1])dnl
+  AC_SUBST([VERSION], [$2])],
+ [_AM_SET_OPTIONS([$1])dnl
+ dnl Diagnose old-style AC_INIT with new-style AM_AUTOMAKE_INIT.
+-m4_if(m4_ifdef([AC_PACKAGE_NAME], 1)m4_ifdef([AC_PACKAGE_VERSION], 1), 11,,
++m4_if(
++  m4_ifdef([AC_PACKAGE_NAME], [ok]):m4_ifdef([AC_PACKAGE_VERSION], [ok]),
++  [ok:ok],,
+   [m4_fatal([AC_INIT should be called with package and version arguments])])dnl
+  AC_SUBST([PACKAGE], ['AC_PACKAGE_TARNAME'])dnl
+  AC_SUBST([VERSION], ['AC_PACKAGE_VERSION'])])dnl
+ 
+ _AM_IF_OPTION([no-define],,
+-[AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE", [Name of package])
+- AC_DEFINE_UNQUOTED(VERSION, "$VERSION", [Version number of package])])dnl
++[AC_DEFINE_UNQUOTED([PACKAGE], ["$PACKAGE"], [Name of package])
++ AC_DEFINE_UNQUOTED([VERSION], ["$VERSION"], [Version number of package])])dnl
+ 
+ # Some tools Automake needs.
+ AC_REQUIRE([AM_SANITY_CHECK])dnl
+ AC_REQUIRE([AC_ARG_PROGRAM])dnl
+-AM_MISSING_PROG(ACLOCAL, aclocal-${am__api_version})
+-AM_MISSING_PROG(AUTOCONF, autoconf)
+-AM_MISSING_PROG(AUTOMAKE, automake-${am__api_version})
+-AM_MISSING_PROG(AUTOHEADER, autoheader)
+-AM_MISSING_PROG(MAKEINFO, makeinfo)
++AM_MISSING_PROG([ACLOCAL], [aclocal-${am__api_version}])
++AM_MISSING_PROG([AUTOCONF], [autoconf])
++AM_MISSING_PROG([AUTOMAKE], [automake-${am__api_version}])
++AM_MISSING_PROG([AUTOHEADER], [autoheader])
++AM_MISSING_PROG([MAKEINFO], [makeinfo])
+ AC_REQUIRE([AM_PROG_INSTALL_SH])dnl
+ AC_REQUIRE([AM_PROG_INSTALL_STRIP])dnl
+-AC_REQUIRE([AM_PROG_MKDIR_P])dnl
++AC_REQUIRE([AC_PROG_MKDIR_P])dnl
++# For better backward compatibility.  To be removed once Automake 1.9.x
++# dies out for good.  For more background, see:
++# <http://lists.gnu.org/archive/html/automake/2012-07/msg00001.html>
++# <http://lists.gnu.org/archive/html/automake/2012-07/msg00014.html>
++AC_SUBST([mkdir_p], ['$(MKDIR_P)'])
+ # We need awk for the "check" target.  The system "awk" is bad on
+ # some platforms.
+ AC_REQUIRE([AC_PROG_AWK])dnl
+@@ -946,28 +956,32 @@
+ 			     [_AM_PROG_TAR([v7])])])
+ _AM_IF_OPTION([no-dependencies],,
+ [AC_PROVIDE_IFELSE([AC_PROG_CC],
+-		  [_AM_DEPENDENCIES(CC)],
+-		  [define([AC_PROG_CC],
+-			  defn([AC_PROG_CC])[_AM_DEPENDENCIES(CC)])])dnl
++		  [_AM_DEPENDENCIES([CC])],
++		  [m4_define([AC_PROG_CC],
++			     m4_defn([AC_PROG_CC])[_AM_DEPENDENCIES([CC])])])dnl
+ AC_PROVIDE_IFELSE([AC_PROG_CXX],
+-		  [_AM_DEPENDENCIES(CXX)],
+-		  [define([AC_PROG_CXX],
+-			  defn([AC_PROG_CXX])[_AM_DEPENDENCIES(CXX)])])dnl
++		  [_AM_DEPENDENCIES([CXX])],
++		  [m4_define([AC_PROG_CXX],
++			     m4_defn([AC_PROG_CXX])[_AM_DEPENDENCIES([CXX])])])dnl
+ AC_PROVIDE_IFELSE([AC_PROG_OBJC],
+-		  [_AM_DEPENDENCIES(OBJC)],
+-		  [define([AC_PROG_OBJC],
+-			  defn([AC_PROG_OBJC])[_AM_DEPENDENCIES(OBJC)])])dnl
++		  [_AM_DEPENDENCIES([OBJC])],
++		  [m4_define([AC_PROG_OBJC],
++			     m4_defn([AC_PROG_OBJC])[_AM_DEPENDENCIES([OBJC])])])dnl
++AC_PROVIDE_IFELSE([AC_PROG_OBJCXX],
++		  [_AM_DEPENDENCIES([OBJCXX])],
++		  [m4_define([AC_PROG_OBJCXX],
++			     m4_defn([AC_PROG_OBJCXX])[_AM_DEPENDENCIES([OBJCXX])])])dnl
+ ])
+-_AM_IF_OPTION([silent-rules], [AC_REQUIRE([AM_SILENT_RULES])])dnl
+-dnl The `parallel-tests' driver may need to know about EXEEXT, so add the
+-dnl `am__EXEEXT' conditional if _AM_COMPILER_EXEEXT was seen.  This macro
+-dnl is hooked onto _AC_COMPILER_EXEEXT early, see below.
++AC_REQUIRE([AM_SILENT_RULES])dnl
++dnl The testsuite driver may need to know about EXEEXT, so add the
++dnl 'am__EXEEXT' conditional if _AM_COMPILER_EXEEXT was seen.  This
++dnl macro is hooked onto _AC_COMPILER_EXEEXT early, see below.
+ AC_CONFIG_COMMANDS_PRE(dnl
+ [m4_provide_if([_AM_COMPILER_EXEEXT],
+   [AM_CONDITIONAL([am__EXEEXT], [test -n "$EXEEXT"])])])dnl
+ ])
+ 
+-dnl Hook into `_AC_COMPILER_EXEEXT' early to learn its expansion.  Do not
++dnl Hook into '_AC_COMPILER_EXEEXT' early to learn its expansion.  Do not
+ dnl add the conditional right here, as _AC_COMPILER_EXEEXT may be further
+ dnl mangled by Autoconf and run in a shell conditional statement.
+ m4_define([_AC_COMPILER_EXEEXT],
+@@ -995,7 +1009,7 @@
+ done
+ echo "timestamp for $_am_arg" >`AS_DIRNAME(["$_am_arg"])`/stamp-h[]$_am_stamp_count])
+ 
+-# Copyright (C) 2001, 2003, 2005, 2008  Free Software Foundation, Inc.
++# Copyright (C) 2001-2013 Free Software Foundation, Inc.
+ #
+ # This file is free software; the Free Software Foundation
+ # gives unlimited permission to copy and/or distribute it,
+@@ -1014,16 +1028,14 @@
+     install_sh="\${SHELL} $am_aux_dir/install-sh"
+   esac
+ fi
+-AC_SUBST(install_sh)])
++AC_SUBST([install_sh])])
+ 
+-# Copyright (C) 2003, 2005  Free Software Foundation, Inc.
++# Copyright (C) 2003-2013 Free Software Foundation, Inc.
+ #
+ # This file is free software; the Free Software Foundation
+ # gives unlimited permission to copy and/or distribute it,
+ # with or without modifications, as long as this notice is preserved.
+ 
+-# serial 2
+-
+ # Check whether the underlying file-system supports filenames
+ # with a leading dot.  For instance MS-DOS doesn't.
+ AC_DEFUN([AM_SET_LEADING_DOT],
+@@ -1039,14 +1051,12 @@
+ 
+ # Check to see how 'make' treats includes.	            -*- Autoconf -*-
+ 
+-# Copyright (C) 2001, 2002, 2003, 2005, 2009  Free Software Foundation, Inc.
++# Copyright (C) 2001-2013 Free Software Foundation, Inc.
+ #
+ # This file is free software; the Free Software Foundation
+ # gives unlimited permission to copy and/or distribute it,
+ # with or without modifications, as long as this notice is preserved.
+ 
+-# serial 4
+-
+ # AM_MAKE_INCLUDE()
+ # -----------------
+ # Check to see how make treats includes.
+@@ -1064,7 +1074,7 @@
+ _am_result=none
+ # First try GNU make style include.
+ echo "include confinc" > confmf
+-# Ignore all kinds of additional output from `make'.
++# Ignore all kinds of additional output from 'make'.
+ case `$am_make -s -f confmf 2> /dev/null` in #(
+ *the\ am__doit\ target*)
+   am__include=include
+@@ -1089,15 +1099,12 @@
+ rm -f confinc confmf
+ ])
+ 
+-# Copyright (C) 1999, 2000, 2001, 2003, 2004, 2005, 2008
+-# Free Software Foundation, Inc.
++# Copyright (C) 1999-2013 Free Software Foundation, Inc.
+ #
+ # This file is free software; the Free Software Foundation
+ # gives unlimited permission to copy and/or distribute it,
+ # with or without modifications, as long as this notice is preserved.
+ 
+-# serial 6
+-
+ # AM_PROG_CC_C_O
+ # --------------
+ # Like AC_PROG_CC_C_O, but changed for automake.
+@@ -1126,15 +1133,12 @@
+ 
+ # Fake the existence of programs that GNU maintainers use.  -*- Autoconf -*-
+ 
+-# Copyright (C) 1997, 1999, 2000, 2001, 2003, 2004, 2005, 2008
+-# Free Software Foundation, Inc.
++# Copyright (C) 1997-2013 Free Software Foundation, Inc.
+ #
+ # This file is free software; the Free Software Foundation
+ # gives unlimited permission to copy and/or distribute it,
+ # with or without modifications, as long as this notice is preserved.
+ 
+-# serial 6
+-
+ # AM_MISSING_PROG(NAME, PROGRAM)
+ # ------------------------------
+ AC_DEFUN([AM_MISSING_PROG],
+@@ -1142,11 +1146,10 @@
+ $1=${$1-"${am_missing_run}$2"}
+ AC_SUBST($1)])
+ 
+-
+ # AM_MISSING_HAS_RUN
+ # ------------------
+-# Define MISSING if not defined so far and test if it supports --run.
+-# If it does, set am_missing_run to use it, otherwise, to nothing.
++# Define MISSING if not defined so far and test if it is modern enough.
++# If it is, set am_missing_run to use it, otherwise, to nothing.
+ AC_DEFUN([AM_MISSING_HAS_RUN],
+ [AC_REQUIRE([AM_AUX_DIR_EXPAND])dnl
+ AC_REQUIRE_AUX_FILE([missing])dnl
+@@ -1159,63 +1162,35 @@
+   esac
+ fi
+ # Use eval to expand $SHELL
+-if eval "$MISSING --run true"; then
+-  am_missing_run="$MISSING --run "
++if eval "$MISSING --is-lightweight"; then
++  am_missing_run="$MISSING "
+ else
+   am_missing_run=
+-  AC_MSG_WARN([`missing' script is too old or missing])
++  AC_MSG_WARN(['missing' script is too old or missing])
+ fi
+ ])
+ 
+-# Copyright (C) 2003, 2004, 2005, 2006  Free Software Foundation, Inc.
+-#
+-# This file is free software; the Free Software Foundation
+-# gives unlimited permission to copy and/or distribute it,
+-# with or without modifications, as long as this notice is preserved.
+-
+-# AM_PROG_MKDIR_P
+-# ---------------
+-# Check for `mkdir -p'.
+-AC_DEFUN([AM_PROG_MKDIR_P],
+-[AC_PREREQ([2.60])dnl
+-AC_REQUIRE([AC_PROG_MKDIR_P])dnl
+-dnl Automake 1.8 to 1.9.6 used to define mkdir_p.  We now use MKDIR_P,
+-dnl while keeping a definition of mkdir_p for backward compatibility.
+-dnl @MKDIR_P@ is magic: AC_OUTPUT adjusts its value for each Makefile.
+-dnl However we cannot define mkdir_p as $(MKDIR_P) for the sake of
+-dnl Makefile.ins that do not define MKDIR_P, so we do our own
+-dnl adjustment using top_builddir (which is defined more often than
+-dnl MKDIR_P).
+-AC_SUBST([mkdir_p], ["$MKDIR_P"])dnl
+-case $mkdir_p in
+-  [[\\/$]]* | ?:[[\\/]]*) ;;
+-  */*) mkdir_p="\$(top_builddir)/$mkdir_p" ;;
+-esac
+-])
+-
+ # Helper functions for option handling.                     -*- Autoconf -*-
+ 
+-# Copyright (C) 2001, 2002, 2003, 2005, 2008  Free Software Foundation, Inc.
++# Copyright (C) 2001-2013 Free Software Foundation, Inc.
+ #
+ # This file is free software; the Free Software Foundation
+ # gives unlimited permission to copy and/or distribute it,
+ # with or without modifications, as long as this notice is preserved.
+ 
+-# serial 4
+-
+ # _AM_MANGLE_OPTION(NAME)
+ # -----------------------
+ AC_DEFUN([_AM_MANGLE_OPTION],
+ [[_AM_OPTION_]m4_bpatsubst($1, [[^a-zA-Z0-9_]], [_])])
+ 
+ # _AM_SET_OPTION(NAME)
+-# ------------------------------
++# --------------------
+ # Set option NAME.  Presently that only means defining a flag for this option.
+ AC_DEFUN([_AM_SET_OPTION],
+-[m4_define(_AM_MANGLE_OPTION([$1]), 1)])
++[m4_define(_AM_MANGLE_OPTION([$1]), [1])])
+ 
+ # _AM_SET_OPTIONS(OPTIONS)
+-# ----------------------------------
++# ------------------------
+ # OPTIONS is a space-separated list of Automake options.
+ AC_DEFUN([_AM_SET_OPTIONS],
+ [m4_foreach_w([_AM_Option], [$1], [_AM_SET_OPTION(_AM_Option)])])
+@@ -1228,22 +1203,16 @@
+ 
+ # Check to make sure that the build environment is sane.    -*- Autoconf -*-
+ 
+-# Copyright (C) 1996, 1997, 2000, 2001, 2003, 2005, 2008
+-# Free Software Foundation, Inc.
++# Copyright (C) 1996-2013 Free Software Foundation, Inc.
+ #
+ # This file is free software; the Free Software Foundation
+ # gives unlimited permission to copy and/or distribute it,
+ # with or without modifications, as long as this notice is preserved.
+ 
+-# serial 5
+-
+ # AM_SANITY_CHECK
+ # ---------------
+ AC_DEFUN([AM_SANITY_CHECK],
+ [AC_MSG_CHECKING([whether build environment is sane])
+-# Just in case
+-sleep 1
+-echo timestamp > conftest.file
+ # Reject unsafe characters in $srcdir or the absolute working directory
+ # name.  Accept space and tab only in the latter.
+ am_lf='
+@@ -1254,32 +1223,40 @@
+ esac
+ case $srcdir in
+   *[[\\\"\#\$\&\'\`$am_lf\ \	]]*)
+-    AC_MSG_ERROR([unsafe srcdir value: `$srcdir']);;
++    AC_MSG_ERROR([unsafe srcdir value: '$srcdir']);;
+ esac
+ 
+-# Do `set' in a subshell so we don't clobber the current shell's
++# Do 'set' in a subshell so we don't clobber the current shell's
+ # arguments.  Must try -L first in case configure is actually a
+ # symlink; some systems play weird games with the mod time of symlinks
+ # (eg FreeBSD returns the mod time of the symlink's containing
+ # directory).
+ if (
+-   set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
+-   if test "$[*]" = "X"; then
+-      # -L didn't work.
+-      set X `ls -t "$srcdir/configure" conftest.file`
+-   fi
+-   rm -f conftest.file
+-   if test "$[*]" != "X $srcdir/configure conftest.file" \
+-      && test "$[*]" != "X conftest.file $srcdir/configure"; then
+-
+-      # If neither matched, then we have a broken ls.  This can happen
+-      # if, for instance, CONFIG_SHELL is bash and it inherits a
+-      # broken ls alias from the environment.  This has actually
+-      # happened.  Such a system could not be considered "sane".
+-      AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
+-alias in your environment])
+-   fi
+-
++   am_has_slept=no
++   for am_try in 1 2; do
++     echo "timestamp, slept: $am_has_slept" > conftest.file
++     set X `ls -Lt "$srcdir/configure" conftest.file 2> /dev/null`
++     if test "$[*]" = "X"; then
++	# -L didn't work.
++	set X `ls -t "$srcdir/configure" conftest.file`
++     fi
++     if test "$[*]" != "X $srcdir/configure conftest.file" \
++	&& test "$[*]" != "X conftest.file $srcdir/configure"; then
++
++	# If neither matched, then we have a broken ls.  This can happen
++	# if, for instance, CONFIG_SHELL is bash and it inherits a
++	# broken ls alias from the environment.  This has actually
++	# happened.  Such a system could not be considered "sane".
++	AC_MSG_ERROR([ls -t appears to fail.  Make sure there is not a broken
++  alias in your environment])
++     fi
++     if test "$[2]" = conftest.file || test $am_try -eq 2; then
++       break
++     fi
++     # Just in case.
++     sleep 1
++     am_has_slept=yes
++   done
+    test "$[2]" = conftest.file
+    )
+ then
+@@ -1289,36 +1266,85 @@
+    AC_MSG_ERROR([newly created file is older than distributed files!
+ Check your system clock])
+ fi
+-AC_MSG_RESULT(yes)])
++AC_MSG_RESULT([yes])
++# If we didn't sleep, we still need to ensure time stamps of config.status and
++# generated files are strictly newer.
++am_sleep_pid=
++if grep 'slept: no' conftest.file >/dev/null 2>&1; then
++  ( sleep 1 ) &
++  am_sleep_pid=$!
++fi
++AC_CONFIG_COMMANDS_PRE(
++  [AC_MSG_CHECKING([that generated files are newer than configure])
++   if test -n "$am_sleep_pid"; then
++     # Hide warnings about reused PIDs.
++     wait $am_sleep_pid 2>/dev/null
++   fi
++   AC_MSG_RESULT([done])])
++rm -f conftest.file
++])
+ 
+-# Copyright (C) 2009  Free Software Foundation, Inc.
++# Copyright (C) 2009-2013 Free Software Foundation, Inc.
+ #
+ # This file is free software; the Free Software Foundation
+ # gives unlimited permission to copy and/or distribute it,
+ # with or without modifications, as long as this notice is preserved.
+ 
+-# serial 1
+-
+ # AM_SILENT_RULES([DEFAULT])
+ # --------------------------
+ # Enable less verbose build rules; with the default set to DEFAULT
+-# (`yes' being less verbose, `no' or empty being verbose).
++# ("yes" being less verbose, "no" or empty being verbose).
+ AC_DEFUN([AM_SILENT_RULES],
+-[AC_ARG_ENABLE([silent-rules],
+-[  --enable-silent-rules          less verbose build output (undo: `make V=1')
+-  --disable-silent-rules         verbose build output (undo: `make V=0')])
+-case $enable_silent_rules in
+-yes) AM_DEFAULT_VERBOSITY=0;;
+-no)  AM_DEFAULT_VERBOSITY=1;;
+-*)   AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1]);;
++[AC_ARG_ENABLE([silent-rules], [dnl
++AS_HELP_STRING(
++  [--enable-silent-rules],
++  [less verbose build output (undo: "make V=1")])
++AS_HELP_STRING(
++  [--disable-silent-rules],
++  [verbose build output (undo: "make V=0")])dnl
++])
++case $enable_silent_rules in @%:@ (((
++  yes) AM_DEFAULT_VERBOSITY=0;;
++   no) AM_DEFAULT_VERBOSITY=1;;
++    *) AM_DEFAULT_VERBOSITY=m4_if([$1], [yes], [0], [1]);;
+ esac
++dnl
++dnl A few 'make' implementations (e.g., NonStop OS and NextStep)
++dnl do not support nested variable expansions.
++dnl See automake bug#9928 and bug#10237.
++am_make=${MAKE-make}
++AC_CACHE_CHECK([whether $am_make supports nested variables]