Merge branch 'master' into master

1 files changed, 0 insertions, 777 deletions

diff --git a/gl/m4/lib-link.m4 b/gl/m4/lib-link.m4
deleted file mode 100644
index 073f040..0000000
--- a/gl/m4/lib-link.m4
+++ /dev/null
@@ -1,777 +0,0 @@
-# lib-link.m4 serial 26 (gettext-0.18.2)
-dnl Copyright (C) 2001-2013 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.
-
-dnl From Bruno Haible.
-
-AC_PREREQ([2.54])
-
-dnl AC_LIB_LINKFLAGS(name [, dependencies]) searches for libname and
-dnl the libraries corresponding to explicit and implicit dependencies.
-dnl Sets and AC_SUBSTs the LIB${NAME} and LTLIB${NAME} variables and
-dnl augments the CPPFLAGS variable.
-dnl Sets and AC_SUBSTs the LIB${NAME}_PREFIX variable to nonempty if libname
-dnl was found in ${LIB${NAME}_PREFIX}/$acl_libdirstem.
-AC_DEFUN([AC_LIB_LINKFLAGS],
-[
-  AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
-  AC_REQUIRE([AC_LIB_RPATH])
-  pushdef([Name],[m4_translit([$1],[./+-], [____])])
-  pushdef([NAME],[m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./+-],
-                                   [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])])
-  AC_CACHE_CHECK([how to link with lib[]$1], [ac_cv_lib[]Name[]_libs], [
-    AC_LIB_LINKFLAGS_BODY([$1], [$2])
-    ac_cv_lib[]Name[]_libs="$LIB[]NAME"
-    ac_cv_lib[]Name[]_ltlibs="$LTLIB[]NAME"
-    ac_cv_lib[]Name[]_cppflags="$INC[]NAME"
-    ac_cv_lib[]Name[]_prefix="$LIB[]NAME[]_PREFIX"
-  ])
-  LIB[]NAME="$ac_cv_lib[]Name[]_libs"
-  LTLIB[]NAME="$ac_cv_lib[]Name[]_ltlibs"
-  INC[]NAME="$ac_cv_lib[]Name[]_cppflags"
-  LIB[]NAME[]_PREFIX="$ac_cv_lib[]Name[]_prefix"
-  AC_LIB_APPENDTOVAR([CPPFLAGS], [$INC]NAME)
-  AC_SUBST([LIB]NAME)
-  AC_SUBST([LTLIB]NAME)
-  AC_SUBST([LIB]NAME[_PREFIX])
-  dnl Also set HAVE_LIB[]NAME so that AC_LIB_HAVE_LINKFLAGS can reuse the
-  dnl results of this search when this library appears as a dependency.
-  HAVE_LIB[]NAME=yes
-  popdef([NAME])
-  popdef([Name])
-])
-
-dnl AC_LIB_HAVE_LINKFLAGS(name, dependencies, includes, testcode, [missing-message])
-dnl searches for libname and the libraries corresponding to explicit and
-dnl implicit dependencies, together with the specified include files and
-dnl the ability to compile and link the specified testcode. The missing-message
-dnl defaults to 'no' and may contain additional hints for the user.
-dnl If found, it sets and AC_SUBSTs HAVE_LIB${NAME}=yes and the LIB${NAME}
-dnl and LTLIB${NAME} variables and augments the CPPFLAGS variable, and
-dnl #defines HAVE_LIB${NAME} to 1. Otherwise, it sets and AC_SUBSTs
-dnl HAVE_LIB${NAME}=no and LIB${NAME} and LTLIB${NAME} to empty.
-dnl Sets and AC_SUBSTs the LIB${NAME}_PREFIX variable to nonempty if libname
-dnl was found in ${LIB${NAME}_PREFIX}/$acl_libdirstem.
-AC_DEFUN([AC_LIB_HAVE_LINKFLAGS],
-[
-  AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
-  AC_REQUIRE([AC_LIB_RPATH])
-  pushdef([Name],[m4_translit([$1],[./+-], [____])])
-  pushdef([NAME],[m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./+-],
-                                   [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])])
-
-  dnl Search for lib[]Name and define LIB[]NAME, LTLIB[]NAME and INC[]NAME
-  dnl accordingly.
-  AC_LIB_LINKFLAGS_BODY([$1], [$2])
-
-  dnl Add $INC[]NAME to CPPFLAGS before performing the following checks,
-  dnl because if the user has installed lib[]Name and not disabled its use
-  dnl via --without-lib[]Name-prefix, he wants to use it.
-  ac_save_CPPFLAGS="$CPPFLAGS"
-  AC_LIB_APPENDTOVAR([CPPFLAGS], [$INC]NAME)
-
-  AC_CACHE_CHECK([for lib[]$1], [ac_cv_lib[]Name], [
-    ac_save_LIBS="$LIBS"
-    dnl If $LIB[]NAME contains some -l options, add it to the end of LIBS,
-    dnl because these -l options might require -L options that are present in
-    dnl LIBS. -l options benefit only from the -L options listed before it.
-    dnl Otherwise, add it to the front of LIBS, because it may be a static
-    dnl library that depends on another static library that is present in LIBS.
-    dnl Static libraries benefit only from the static libraries listed after
-    dnl it.
-    case " $LIB[]NAME" in
-      *" -l"*) LIBS="$LIBS $LIB[]NAME" ;;
-      *)       LIBS="$LIB[]NAME $LIBS" ;;
-    esac
-    AC_LINK_IFELSE(
-      [AC_LANG_PROGRAM([[$3]], [[$4]])],
-      [ac_cv_lib[]Name=yes],
-      [ac_cv_lib[]Name='m4_if([$5], [], [no], [[$5]])'])
-    LIBS="$ac_save_LIBS"
-  ])
-  if test "$ac_cv_lib[]Name" = yes; then
-    HAVE_LIB[]NAME=yes
-    AC_DEFINE([HAVE_LIB]NAME, 1, [Define if you have the lib][$1 library.])
-    AC_MSG_CHECKING([how to link with lib[]$1])
-    AC_MSG_RESULT([$LIB[]NAME])
-  else
-    HAVE_LIB[]NAME=no
-    dnl If $LIB[]NAME didn't lead to a usable library, we don't need
-    dnl $INC[]NAME either.
-    CPPFLAGS="$ac_save_CPPFLAGS"
-    LIB[]NAME=
-    LTLIB[]NAME=
-    LIB[]NAME[]_PREFIX=
-  fi
-  AC_SUBST([HAVE_LIB]NAME)
-  AC_SUBST([LIB]NAME)
-  AC_SUBST([LTLIB]NAME)
-  AC_SUBST([LIB]NAME[_PREFIX])
-  popdef([NAME])
-  popdef([Name])
-])
-
-dnl Determine the platform dependent parameters needed to use rpath:
-dnl   acl_libext,
-dnl   acl_shlibext,
-dnl   acl_libname_spec,
-dnl   acl_library_names_spec,
-dnl   acl_hardcode_libdir_flag_spec,
-dnl   acl_hardcode_libdir_separator,
-dnl   acl_hardcode_direct,
-dnl   acl_hardcode_minus_L.
-AC_DEFUN([AC_LIB_RPATH],
-[
-  dnl Tell automake >= 1.10 to complain if config.rpath is missing.
-  m4_ifdef([AC_REQUIRE_AUX_FILE], [AC_REQUIRE_AUX_FILE([config.rpath])])
-  AC_REQUIRE([AC_PROG_CC])                dnl we use $CC, $GCC, $LDFLAGS
-  AC_REQUIRE([AC_LIB_PROG_LD])            dnl we use $LD, $with_gnu_ld
-  AC_REQUIRE([AC_CANONICAL_HOST])         dnl we use $host
-  AC_REQUIRE([AC_CONFIG_AUX_DIR_DEFAULT]) dnl we use $ac_aux_dir
-  AC_CACHE_CHECK([for shared library run path origin], [acl_cv_rpath], [
-    CC="$CC" GCC="$GCC" LDFLAGS="$LDFLAGS" LD="$LD" with_gnu_ld="$with_gnu_ld" \
-    ${CONFIG_SHELL-/bin/sh} "$ac_aux_dir/config.rpath" "$host" > conftest.sh
-    . ./conftest.sh
-    rm -f ./conftest.sh
-    acl_cv_rpath=done
-  ])
-  wl="$acl_cv_wl"
-  acl_libext="$acl_cv_libext"
-  acl_shlibext="$acl_cv_shlibext"
-  acl_libname_spec="$acl_cv_libname_spec"
-  acl_library_names_spec="$acl_cv_library_names_spec"
-  acl_hardcode_libdir_flag_spec="$acl_cv_hardcode_libdir_flag_spec"
-  acl_hardcode_libdir_separator="$acl_cv_hardcode_libdir_separator"
-  acl_hardcode_direct="$acl_cv_hardcode_direct"
-  acl_hardcode_minus_L="$acl_cv_hardcode_minus_L"
-  dnl Determine whether the user wants rpath handling at all.
-  AC_ARG_ENABLE([rpath],
-    [  --disable-rpath         do not hardcode runtime library paths],
-    :, enable_rpath=yes)
-])
-
-dnl AC_LIB_FROMPACKAGE(name, package)
-dnl declares that libname comes from the given package. The configure file
-dnl will then not have a --with-libname-prefix option but a
-dnl --with-package-prefix option. Several libraries can come from the same
-dnl package. This declaration must occur before an AC_LIB_LINKFLAGS or similar
-dnl macro call that searches for libname.
-AC_DEFUN([AC_LIB_FROMPACKAGE],
-[
-  pushdef([NAME],[m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./+-],
-                                   [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])])
-  define([acl_frompackage_]NAME, [$2])
-  popdef([NAME])
-  pushdef([PACK],[$2])
-  pushdef([PACKUP],[m4_translit(PACK,[abcdefghijklmnopqrstuvwxyz./+-],
-                                     [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])])
-  define([acl_libsinpackage_]PACKUP,
-    m4_ifdef([acl_libsinpackage_]PACKUP, [m4_defn([acl_libsinpackage_]PACKUP)[, ]],)[lib$1])
-  popdef([PACKUP])
-  popdef([PACK])
-])
-
-dnl AC_LIB_LINKFLAGS_BODY(name [, dependencies]) searches for libname and
-dnl the libraries corresponding to explicit and implicit dependencies.
-dnl Sets the LIB${NAME}, LTLIB${NAME} and INC${NAME} variables.
-dnl Also, sets the LIB${NAME}_PREFIX variable to nonempty if libname was found
-dnl in ${LIB${NAME}_PREFIX}/$acl_libdirstem.
-AC_DEFUN([AC_LIB_LINKFLAGS_BODY],
-[
-  AC_REQUIRE([AC_LIB_PREPARE_MULTILIB])
-  pushdef([NAME],[m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./+-],
-                                   [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])])
-  pushdef([PACK],[m4_ifdef([acl_frompackage_]NAME, [acl_frompackage_]NAME, lib[$1])])
-  pushdef([PACKUP],[m4_translit(PACK,[abcdefghijklmnopqrstuvwxyz./+-],
-                                     [ABCDEFGHIJKLMNOPQRSTUVWXYZ____])])
-  pushdef([PACKLIBS],[m4_ifdef([acl_frompackage_]NAME, [acl_libsinpackage_]PACKUP, lib[$1])])
-  dnl Autoconf >= 2.61 supports dots in --with options.
-  pushdef([P_A_C_K],[m4_if(m4_version_compare(m4_defn([m4_PACKAGE_VERSION]),[2.61]),[-1],[m4_translit(PACK,[.],[_])],PACK)])
-  dnl By default, look in $includedir and $libdir.
-  use_additional=yes
-  AC_LIB_WITH_FINAL_PREFIX([
-    eval additional_includedir=\"$includedir\"
-    eval additional_libdir=\"$libdir\"
-  ])
-  AC_ARG_WITH(P_A_C_K[-prefix],
-[[  --with-]]P_A_C_K[[-prefix[=DIR]  search for ]PACKLIBS[ in DIR/include and DIR/lib
-  --without-]]P_A_C_K[[-prefix     don't search for ]PACKLIBS[ in includedir and libdir]],
-[
-    if test "X$withval" = "Xno"; then
-      use_additional=no
-    else
-      if test "X$withval" = "X"; then
-        AC_LIB_WITH_FINAL_PREFIX([
-          eval additional_includedir=\"$includedir\"
-          eval additional_libdir=\"$libdir\"
-        ])
-      else
-        additional_includedir="$withval/include"
-        additional_libdir="$withval/$acl_libdirstem"
-        if test "$acl_libdirstem2" != "$acl_libdirstem" \
-           && ! test -d "$withval/$acl_libdirstem"; then
-          additional_libdir="$withval/$acl_libdirstem2"
-        fi
-      fi
-    fi
-])
-  dnl Search the library and its dependencies in $additional_libdir and
-  dnl $LDFLAGS. Using breadth-first-seach.
-  LIB[]NAME=
-  LTLIB[]NAME=
-  INC[]NAME=
-  LIB[]NAME[]_PREFIX=
-  dnl HAVE_LIB${NAME} is an indicator that LIB${NAME}, LTLIB${NAME} have been
-  dnl computed. So it has to be reset here.
-  HAVE_LIB[]NAME=
-  rpathdirs=
-  ltrpathdirs=
-  names_already_handled=
-  names_next_round='$1 $2'
-  while test -n "$names_next_round"; do
-    names_this_round="$names_next_round"
-    names_next_round=
-    for name in $names_this_round; do
-      already_handled=
-      for n in $names_already_handled; do
-        if test "$n" = "$name"; then
-          already_handled=yes
-          break
-        fi
-      done
-      if test -z "$already_handled"; then
-        names_already_handled="$names_already_handled $name"
-        dnl See if it was already located by an earlier AC_LIB_LINKFLAGS
-        dnl or AC_LIB_HAVE_LINKFLAGS call.
-        uppername=`echo "$name" | sed -e 'y|abcdefghijklmnopqrstuvwxyz./+-|ABCDEFGHIJKLMNOPQRSTUVWXYZ____|'`
-        eval value=\"\$HAVE_LIB$uppername\"
-        if test -n "$value"; then
-          if test "$value" = yes; then
-            eval value=\"\$LIB$uppername\"
-            test -z "$value" || LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$value"
-            eval value=\"\$LTLIB$uppername\"
-            test -z "$value" || LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }$value"
-          else
-            dnl An earlier call to AC_LIB_HAVE_LINKFLAGS has determined
-            dnl that this library doesn't exist. So just drop it.
-            :
-          fi
-        else
-          dnl Search the library lib$name in $additional_libdir and $LDFLAGS
-          dnl and the already constructed $LIBNAME/$LTLIBNAME.
-          found_dir=
-          found_la=
-          found_so=
-          found_a=
-          eval libname=\"$acl_libname_spec\"    # typically: libname=lib$name
-          if test -n "$acl_shlibext"; then
-            shrext=".$acl_shlibext"             # typically: shrext=.so
-          else
-            shrext=
-          fi
-          if test $use_additional = yes; then
-            dir="$additional_libdir"
-            dnl The same code as in the loop below:
-            dnl First look for a shared library.
-            if test -n "$acl_shlibext"; then
-              if test -f "$dir/$libname$shrext"; then
-                found_dir="$dir"
-                found_so="$dir/$libname$shrext"
-              else
-                if test "$acl_library_names_spec" = '$libname$shrext$versuffix'; then
-                  ver=`(cd "$dir" && \
-                        for f in "$libname$shrext".*; do echo "$f"; done \
-                        | sed -e "s,^$libname$shrext\\\\.,," \
-                        | sort -t '.' -n -r -k1,1 -k2,2 -k3,3 -k4,4 -k5,5 \
-                        | sed 1q ) 2>/dev/null`
-                  if test -n "$ver" && test -f "$dir/$libname$shrext.$ver"; then
-                    found_dir="$dir"
-                    found_so="$dir/$libname$shrext.$ver"
-                  fi
-                else
-                  eval library_names=\"$acl_library_names_spec\"
-                  for f in $library_names; do
-                    if test -f "$dir/$f"; then
-                      found_dir="$dir"
-                      found_so="$dir/$f"
-                      break
-                    fi
-                  done
-                fi
-              fi
-            fi
-            dnl Then look for a static library.
-            if test "X$found_dir" = "X"; then
-              if test -f "$dir/$libname.$acl_libext"; then
-                found_dir="$dir"
-                found_a="$dir/$libname.$acl_libext"
-              fi
-            fi
-            if test "X$found_dir" != "X"; then
-              if test -f "$dir/$libname.la"; then
-                found_la="$dir/$libname.la"
-              fi
-            fi
-          fi
-          if test "X$found_dir" = "X"; then
-            for x in $LDFLAGS $LTLIB[]NAME; do
-              AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
-              case "$x" in
-                -L*)
-                  dir=`echo "X$x" | sed -e 's/^X-L//'`
-                  dnl First look for a shared library.
-                  if test -n "$acl_shlibext"; then
-                    if test -f "$dir/$libname$shrext"; then
-                      found_dir="$dir"
-                      found_so="$dir/$libname$shrext"
-                    else
-                      if test "$acl_library_names_spec" = '$libname$shrext$versuffix'; then
-                        ver=`(cd "$dir" && \
-                              for f in "$libname$shrext".*; do echo "$f"; done \
-                              | sed -e "s,^$libname$shrext\\\\.,," \
-                              | sort -t '.' -n -r -k1,1 -k2,2 -k3,3 -k4,4 -k5,5 \
-                              | sed 1q ) 2>/dev/null`
-                        if test -n "$ver" && test -f "$dir/$libname$shrext.$ver"; then
-                          found_dir="$dir"
-                          found_so="$dir/$libname$shrext.$ver"
-                        fi
-                      else
-                        eval library_names=\"$acl_library_names_spec\"
-                        for f in $library_names; do
-                          if test -f "$dir/$f"; then
-                            found_dir="$dir"
-                            found_so="$dir/$f"
-                            break
-                          fi
-                        done
-                      fi
-                    fi
-                  fi
-                  dnl Then look for a static library.
-                  if test "X$found_dir" = "X"; then
-                    if test -f "$dir/$libname.$acl_libext"; then
-                      found_dir="$dir"
-                      found_a="$dir/$libname.$acl_libext"
-                    fi
-                  fi
-                  if test "X$found_dir" != "X"; then
-                    if test -f "$dir/$libname.la"; then
-                      found_la="$dir/$libname.la"
-                    fi
-                  fi
-                  ;;
-              esac
-              if test "X$found_dir" != "X"; then
-                break
-              fi
-            done
-          fi
-          if test "X$found_dir" != "X"; then
-            dnl Found the library.
-            LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-L$found_dir -l$name"
-            if test "X$found_so" != "X"; then
-              dnl Linking with a shared library. We attempt to hardcode its
-              dnl directory into the executable's runpath, unless it's the
-              dnl standard /usr/lib.
-              if test "$enable_rpath" = no \
-                 || test "X$found_dir" = "X/usr/$acl_libdirstem" \
-                 || test "X$found_dir" = "X/usr/$acl_libdirstem2"; then
-                dnl No hardcoding is needed.
-                LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
-              else
-                dnl Use an explicit option to hardcode DIR into the resulting
-                dnl binary.
-                dnl Potentially add DIR to ltrpathdirs.
-                dnl The ltrpathdirs will be appended to $LTLIBNAME at the end.
-                haveit=
-                for x in $ltrpathdirs; do
-                  if test "X$x" = "X$found_dir"; then
-                    haveit=yes
-                    break
-                  fi
-                done
-                if test -z "$haveit"; then
-                  ltrpathdirs="$ltrpathdirs $found_dir"
-                fi
-                dnl The hardcoding into $LIBNAME is system dependent.
-                if test "$acl_hardcode_direct" = yes; then
-                  dnl Using DIR/libNAME.so during linking hardcodes DIR into the
-                  dnl resulting binary.
-                  LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
-                else
-                  if test -n "$acl_hardcode_libdir_flag_spec" && test "$acl_hardcode_minus_L" = no; then
-                    dnl Use an explicit option to hardcode DIR into the resulting
-                    dnl binary.
-                    LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
-                    dnl Potentially add DIR to rpathdirs.
-                    dnl The rpathdirs will be appended to $LIBNAME at the end.
-                    haveit=
-                    for x in $rpathdirs; do
-                      if test "X$x" = "X$found_dir"; then
-                        haveit=yes
-                        break
-                      fi
-                    done
-                    if test -z "$haveit"; then
-                      rpathdirs="$rpathdirs $found_dir"
-                    fi
-                  else
-                    dnl Rely on "-L$found_dir".
-                    dnl But don't add it if it's already contained in the LDFLAGS
-                    dnl or the already constructed $LIBNAME
-                    haveit=
-                    for x in $LDFLAGS $LIB[]NAME; do
-                      AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
-                      if test "X$x" = "X-L$found_dir"; then
-                        haveit=yes
-                        break
-                      fi
-                    done
-                    if test -z "$haveit"; then
-                      LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$found_dir"
-                    fi
-                    if test "$acl_hardcode_minus_L" != no; then
-                      dnl FIXME: Not sure whether we should use
-                      dnl "-L$found_dir -l$name" or "-L$found_dir $found_so"
-                      dnl here.
-                      LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_so"
-                    else
-                      dnl We cannot use $acl_hardcode_runpath_var and LD_RUN_PATH
-                      dnl here, because this doesn't fit in flags passed to the
-                      dnl compiler. So give up. No hardcoding. This affects only
-                      dnl very old systems.
-                      dnl FIXME: Not sure whether we should use
-                      dnl "-L$found_dir -l$name" or "-L$found_dir $found_so"
-                      dnl here.
-                      LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-l$name"
-                    fi
-                  fi
-                fi
-              fi
-            else
-              if test "X$found_a" != "X"; then
-                dnl Linking with a static library.
-                LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$found_a"
-              else
-                dnl We shouldn't come here, but anyway it's good to have a
-                dnl fallback.
-                LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$found_dir -l$name"
-              fi
-            fi
-            dnl Assume the include files are nearby.
-            additional_includedir=
-            case "$found_dir" in
-              */$acl_libdirstem | */$acl_libdirstem/)
-                basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e "s,/$acl_libdirstem/"'*$,,'`
-                if test "$name" = '$1'; then
-                  LIB[]NAME[]_PREFIX="$basedir"
-                fi
-                additional_includedir="$basedir/include"
-                ;;
-              */$acl_libdirstem2 | */$acl_libdirstem2/)
-                basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e "s,/$acl_libdirstem2/"'*$,,'`
-                if test "$name" = '$1'; then
-                  LIB[]NAME[]_PREFIX="$basedir"
-                fi
-                additional_includedir="$basedir/include"
-                ;;
-            esac
-            if test "X$additional_includedir" != "X"; then
-              dnl Potentially add $additional_includedir to $INCNAME.
-              dnl But don't add it
-              dnl   1. if it's the standard /usr/include,
-              dnl   2. if it's /usr/local/include and we are using GCC on Linux,
-              dnl   3. if it's already present in $CPPFLAGS or the already
-              dnl      constructed $INCNAME,
-              dnl   4. if it doesn't exist as a directory.
-              if test "X$additional_includedir" != "X/usr/include"; then
-                haveit=
-                if test "X$additional_includedir" = "X/usr/local/include"; then
-                  if test -n "$GCC"; then
-                    case $host_os in
-                      linux* | gnu* | k*bsd*-gnu) haveit=yes;;
-                    esac
-                  fi
-                fi
-                if test -z "$haveit"; then
-                  for x in $CPPFLAGS $INC[]NAME; do
-                    AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
-                    if test "X$x" = "X-I$additional_includedir"; then
-                      haveit=yes
-                      break
-                    fi
-                  done
-                  if test -z "$haveit"; then
-                    if test -d "$additional_includedir"; then
-                      dnl Really add $additional_includedir to $INCNAME.
-                      INC[]NAME="${INC[]NAME}${INC[]NAME:+ }-I$additional_includedir"
-                    fi
-                  fi
-                fi
-              fi
-            fi
-            dnl Look for dependencies.
-            if test -n "$found_la"; then
-              dnl Read the .la file. It defines the variables
-              dnl dlname, library_names, old_library, dependency_libs, current,
-              dnl age, revision, installed, dlopen, dlpreopen, libdir.
-              save_libdir="$libdir"
-              case "$found_la" in
-                */* | *\\*) . "$found_la" ;;
-                *) . "./$found_la" ;;
-              esac
-              libdir="$save_libdir"
-              dnl We use only dependency_libs.
-              for dep in $dependency_libs; do
-                case "$dep" in
-                  -L*)
-                    additional_libdir=`echo "X$dep" | sed -e 's/^X-L//'`
-                    dnl Potentially add $additional_libdir to $LIBNAME and $LTLIBNAME.
-                    dnl But don't add it
-                    dnl   1. if it's the standard /usr/lib,
-                    dnl   2. if it's /usr/local/lib and we are using GCC on Linux,
-                    dnl   3. if it's already present in $LDFLAGS or the already
-                    dnl      constructed $LIBNAME,
-                    dnl   4. if it doesn't exist as a directory.
-                    if test "X$additional_libdir" != "X/usr/$acl_libdirstem" \
-                       && test "X$additional_libdir" != "X/usr/$acl_libdirstem2"; then
-                      haveit=
-                      if test "X$additional_libdir" = "X/usr/local/$acl_libdirstem" \
-                         || test "X$additional_libdir" = "X/usr/local/$acl_libdirstem2"; then
-                        if test -n "$GCC"; then
-                          case $host_os in
-                            linux* | gnu* | k*bsd*-gnu) haveit=yes;;
-                          esac
-                        fi
-                      fi
-                      if test -z "$haveit"; then
-                        haveit=
-                        for x in $LDFLAGS $LIB[]NAME; do
-                          AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
-                          if test "X$x" = "X-L$additional_libdir"; then
-                            haveit=yes
-                            break
-                          fi
-                        done
-                        if test -z "$haveit"; then
-                          if test -d "$additional_libdir"; then
-                            dnl Really add $additional_libdir to $LIBNAME.
-                            LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-L$additional_libdir"
-                          fi
-                        fi
-                        haveit=
-                        for x in $LDFLAGS $LTLIB[]NAME; do
-                          AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
-                          if test "X$x" = "X-L$additional_libdir"; then
-                            haveit=yes
-                            break
-                          fi
-                        done
-                        if test -z "$haveit"; then
-                          if test -d "$additional_libdir"; then
-                            dnl Really add $additional_libdir to $LTLIBNAME.
-                            LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-L$additional_libdir"
-                          fi
-                        fi
-                      fi
-                    fi
-                    ;;
-                  -R*)
-                    dir=`echo "X$dep" | sed -e 's/^X-R//'`
-                    if test "$enable_rpath" != no; then
-                      dnl Potentially add DIR to rpathdirs.
-                      dnl The rpathdirs will be appended to $LIBNAME at the end.
-                      haveit=
-                      for x in $rpathdirs; do
-                        if test "X$x" = "X$dir"; then
-                          haveit=yes
-                          break
-                        fi
-                      done
-                      if test -z "$haveit"; then
-                        rpathdirs="$rpathdirs $dir"
-                      fi
-                      dnl Potentially add DIR to ltrpathdirs.
-                      dnl The ltrpathdirs will be appended to $LTLIBNAME at the end.
-                      haveit=
-                      for x in $ltrpathdirs; do
-                        if test "X$x" = "X$dir"; then
-                          haveit=yes
-                          break
-                        fi
-                      done
-                      if test -z "$haveit"; then
-                        ltrpathdirs="$ltrpathdirs $dir"
-                      fi
-                    fi
-                    ;;
-                  -l*)
-                    dnl Handle this in the next round.
-                    names_next_round="$names_next_round "`echo "X$dep" | sed -e 's/^X-l//'`
-                    ;;
-                  *.la)
-                    dnl Handle this in the next round. Throw away the .la's
-                    dnl directory; it is already contained in a preceding -L
-                    dnl option.
-                    names_next_round="$names_next_round "`echo "X$dep" | sed -e 's,^X.*/,,' -e 's,^lib,,' -e 's,\.la$,,'`
-                    ;;
-                  *)
-                    dnl Most likely an immediate library name.
-                    LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$dep"
-                    LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }$dep"
-                    ;;
-                esac
-              done
-            fi
-          else
-            dnl Didn't find the library; assume it is in the system directories
-            dnl known to the linker and runtime loader. (All the system
-            dnl directories known to the linker should also be known to the
-            dnl runtime loader, otherwise the system is severely misconfigured.)
-            LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }-l$name"
-            LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-l$name"
-          fi
-        fi
-      fi
-    done
-  done
-  if test "X$rpathdirs" != "X"; then
-    if test -n "$acl_hardcode_libdir_separator"; then
-      dnl Weird platform: only the last -rpath option counts, the user must
-      dnl pass all path elements in one option. We can arrange that for a
-      dnl single library, but not when more than one $LIBNAMEs are used.
-      alldirs=
-      for found_dir in $rpathdirs; do
-        alldirs="${alldirs}${alldirs:+$acl_hardcode_libdir_separator}$found_dir"
-      done
-      dnl Note: acl_hardcode_libdir_flag_spec uses $libdir and $wl.
-      acl_save_libdir="$libdir"
-      libdir="$alldirs"
-      eval flag=\"$acl_hardcode_libdir_flag_spec\"
-      libdir="$acl_save_libdir"
-      LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$flag"
-    else
-      dnl The -rpath options are cumulative.
-      for found_dir in $rpathdirs; do
-        acl_save_libdir="$libdir"
-        libdir="$found_dir"
-        eval flag=\"$acl_hardcode_libdir_flag_spec\"
-        libdir="$acl_save_libdir"
-        LIB[]NAME="${LIB[]NAME}${LIB[]NAME:+ }$flag"
-      done
-    fi
-  fi
-  if test "X$ltrpathdirs" != "X"; then
-    dnl When using libtool, the option that works for both libraries and
-    dnl executables is -R. The -R options are cumulative.
-    for found_dir in $ltrpathdirs; do
-      LTLIB[]NAME="${LTLIB[]NAME}${LTLIB[]NAME:+ }-R$found_dir"
-    done
-  fi
-  popdef([P_A_C_K])
-  popdef([PACKLIBS])
-  popdef([PACKUP])
-  popdef([PACK])
-  popdef([NAME])
-])
-
-dnl AC_LIB_APPENDTOVAR(VAR, CONTENTS) appends the elements of CONTENTS to VAR,
-dnl unless already present in VAR.
-dnl Works only for CPPFLAGS, not for LIB* variables because that sometimes
-dnl contains two or three consecutive elements that belong together.
-AC_DEFUN([AC_LIB_APPENDTOVAR],
-[
-  for element in [$2]; do
-    haveit=
-    for x in $[$1]; do
-      AC_LIB_WITH_FINAL_PREFIX([eval x=\"$x\"])
-      if test "X$x" = "X$element"; then
-        haveit=yes
-        break
-      fi
-    done
-    if test -z "$haveit"; then
-      [$1]="${[$1]}${[$1]:+ }$element"
-    fi
-  done
-])
-
-dnl For those cases where a variable contains several -L and -l options
-dnl referring to unknown libraries and directories, this macro determines the
-dnl necessary additional linker options for the runtime path.
-dnl AC_LIB_LINKFLAGS_FROM_LIBS([LDADDVAR], [LIBSVALUE], [USE-LIBTOOL])
-dnl sets LDADDVAR to linker options needed together with LIBSVALUE.
-dnl If USE-LIBTOOL evaluates to non-empty, linking with libtool is assumed,
-dnl otherwise linking without libtool is assumed.
-AC_DEFUN([AC_LIB_LINKFLAGS_FROM_LIBS],
-[
-  AC_REQUIRE([AC_LIB_RPATH])
-  AC_REQUIRE([AC_LIB_PREPARE_MULTILIB])
-  $1=
-  if test "$enable_rpath" != no; then
-    if test -n "$acl_hardcode_libdir_flag_spec" && test "$acl_hardcode_minus_L" = no; then
-      dnl Use an explicit option to hardcode directories into the resulting
-      dnl binary.
-      rpathdirs=
-      next=
-      for opt in $2; do
-        if test -n "$next"; then
-          dir="$next"
-          dnl No need to hardcode the standard /usr/lib.
-          if test "X$dir" != "X/usr/$acl_libdirstem" \
-             && test "X$dir" != "X/usr/$acl_libdirstem2"; then
-            rpathdirs="$rpathdirs $dir"
-          fi
-          next=
-        else
-          case $opt in
-            -L) next=yes ;;
-            -L*) dir=`echo "X$opt" | sed -e 's,^X-L,,'`
-                 dnl No need to hardcode the standard /usr/lib.
-                 if test "X$dir" != "X/usr/$acl_libdirstem" \
-                    && test "X$dir" != "X/usr/$acl_libdirstem2"; then
-                   rpathdirs="$rpathdirs $dir"
-                 fi
-                 next= ;;
-            *) next= ;;
-          esac
-        fi
-      done
-      if test "X$rpathdirs" != "X"; then
-        if test -n ""$3""; then
-          dnl libtool is used for linking. Use -R options.
-          for dir in $rpathdirs; do
-            $1="${$1}${$1:+ }-R$dir"
-          done
-        else
-          dnl The linker is used for linking directly.
-          if test -n "$acl_hardcode_libdir_separator"; then
-            dnl Weird platform: only the last -rpath option counts, the user
-            dnl must pass all path elements in one option.
-            alldirs=
-            for dir in $rpathdirs; do
-              alldirs="${alldirs}${alldirs:+$acl_hardcode_libdir_separator}$dir"
-            done
-            acl_save_libdir="$libdir"
-            libdir="$alldirs"
-            eval flag=\"$acl_hardcode_libdir_flag_spec\"
-            libdir="$acl_save_libdir"
-            $1="$flag"
-          else
-            dnl The -rpath options are cumulative.
-            for dir in $rpathdirs; do
-              acl_save_libdir="$libdir"
-              libdir="$dir"
-              eval flag=\"$acl_hardcode_libdir_flag_spec\"
-              libdir="$acl_save_libdir"
-              $1="${$1}${$1:+ }$flag"
-            done
-          fi
-        fi
-      fi
-    fi
-  fi
-  AC_SUBST([$1])
-])