diff --git a/newlib/ChangeLog b/newlib/ChangeLog
index 227668901..7ad30336b 100644
--- a/newlib/ChangeLog
+++ b/newlib/ChangeLog
@@ -1,3 +1,18 @@
+2007-04-23  Ralf Wildenhues  <Ralf.Wildenhues <at> gmx.de>
+
+	* confsubdir.m4 (AC_CONFIG_SUBDIRS, _AC_OUTPUT_SUBDIRS): New
+	file.  Override Autoconf-2.59's version of these macros with
+	fixed handling of multiple adjacent whitespace in arguments.
+	* aclocal.m4: Regenerated forcefully.
+	* configure: Ditto.
+	* Makefile.in: Ditto.
+	* libc/*Makefile.in: Ditto.
+	* libc/*aclocal.m4: Ditto.
+	* libc/*configure: Ditto.
+	* libm/*Makefile.in: Ditto.
+	* libm/*aclocal.m4: Ditto.
+	* libm/*configure: Ditto.
+
 2007-04-23  Jeff Johnston  <jjohnstn@redhat.com>
 
 	* libc/sys/arc/dummy.S: Dummy file to force .S.o suffix rule.
diff --git a/newlib/Makefile.in b/newlib/Makefile.in
index 02387601b..98fb5e546 100644
--- a/newlib/Makefile.in
+++ b/newlib/Makefile.in
@@ -46,8 +46,9 @@ DIST_COMMON = $(srcdir)/../config.guess $(srcdir)/../config.sub NEWS \
 	$(srcdir)/../config.sub
 subdir = .
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
-am__aclocal_m4_deps = $(top_srcdir)/libtool.m4 \
-	$(top_srcdir)/acinclude.m4 $(top_srcdir)/configure.in
+am__aclocal_m4_deps = $(top_srcdir)/confsubdir.m4 \
+	$(top_srcdir)/libtool.m4 $(top_srcdir)/acinclude.m4 \
+	$(top_srcdir)/configure.in
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 am__CONFIG_DISTCLEAN_FILES = config.status config.cache config.log \
diff --git a/newlib/aclocal.m4 b/newlib/aclocal.m4
index f0a5fb456..0479811ed 100644
--- a/newlib/aclocal.m4
+++ b/newlib/aclocal.m4
@@ -877,5 +877,6 @@ AC_SUBST([am__tar])
 AC_SUBST([am__untar])
 ]) # _AM_PROG_TAR
 
+m4_include([confsubdir.m4])
 m4_include([libtool.m4])
 m4_include([acinclude.m4])
diff --git a/newlib/configure b/newlib/configure
index e07ca3611..c5009626c 100755
--- a/newlib/configure
+++ b/newlib/configure
@@ -6996,14 +6996,17 @@ if test "$no_create" != yes; then
 fi
 
 #
-# CONFIG_SUBDIRS section.
+# CONFIG_SUBDIRS section, as fixed in confsubdir.m4.
 #
 if test "$no_recursion" != yes; then
 
   # Remove --cache-file and --srcdir arguments so they do not pile up.
   ac_sub_configure_args=
   ac_prev=
-  for ac_arg in $ac_configure_args; do
+  eval "set x $ac_configure_args"
+  shift
+  for ac_arg
+  do
     if test -n "$ac_prev"; then
       ac_prev=
       continue
@@ -7026,20 +7029,28 @@ if test "$no_recursion" != yes; then
       ac_prev=prefix ;;
     -prefix=* | --prefix=* | --prefi=* | --pref=* | --pre=* | --pr=* | --p=*)
       ;;
-    *) ac_sub_configure_args="$ac_sub_configure_args $ac_arg" ;;
+    *)
+      case $ac_arg in
+      *\'*) ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+      esac
+      ac_sub_configure_args="$ac_sub_configure_args '$ac_arg'" ;;
     esac
   done
 
   # Always prepend --prefix to ensure using the same prefix
   # in subdir configurations.
-  ac_sub_configure_args="--prefix=$prefix $ac_sub_configure_args"
+  ac_arg="--prefix=$prefix"
+  case $ac_arg in
+  *\'*) ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+  esac
+  ac_sub_configure_args="$ac_arg $ac_sub_configure_args"
 
   ac_popdir=`pwd`
   for ac_dir in : $subdirs; do test "x$ac_dir" = x: && continue
 
     # Do not complain, so a configure script can configure whichever
     # parts of a large source tree are present.
-    test -d $srcdir/$ac_dir || continue
+    test -d "$srcdir/$ac_dir" || continue
 
     { echo "$as_me:$LINENO: configuring in $ac_dir" >&5
 echo "$as_me: configuring in $ac_dir" >&6;}
@@ -7134,15 +7145,16 @@ case $ac_abs_builddir in
 esac
 
 
-    cd $ac_dir
+    cd "$ac_dir"
 
     # Check for guested configure; otherwise get Cygnus style configure.
-    if test -f $ac_srcdir/configure.gnu; then
-      ac_sub_configure="$SHELL '$ac_srcdir/configure.gnu'"
-    elif test -f $ac_srcdir/configure; then
-      ac_sub_configure="$SHELL '$ac_srcdir/configure'"
-    elif test -f $ac_srcdir/configure.in; then
-      ac_sub_configure=$ac_configure
+    if test -f "$ac_srcdir/configure.gnu"; then
+      ac_sub_configure=$ac_srcdir/configure.gnu
+    elif test -f "$ac_srcdir/configure"; then
+      ac_sub_configure=$ac_srcdir/configure
+    elif test -f "$ac_srcdir/configure.in"; then
+      # This should be Cygnus configure.
+      ac_sub_configure=$ac_aux_dir/configure
     else
       { echo "$as_me:$LINENO: WARNING: no configuration information is in $ac_dir" >&5
 echo "$as_me: WARNING: no configuration information is in $ac_dir" >&2;}
@@ -7158,17 +7170,17 @@ echo "$as_me: WARNING: no configuration information is in $ac_dir" >&2;}
 	ac_sub_cache_file=$ac_top_builddir$cache_file ;;
       esac
 
-      { echo "$as_me:$LINENO: running $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&5
-echo "$as_me: running $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&6;}
+      { echo "$as_me:$LINENO: running $SHELL $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&5
+echo "$as_me: running $SHELL $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&6;}
       # The eval makes quoting arguments work.
-      eval $ac_sub_configure $ac_sub_configure_args \
-	   --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir ||
+      eval "\$SHELL \"\$ac_sub_configure\" $ac_sub_configure_args \
+	   --cache-file=\"\$ac_sub_cache_file\" --srcdir=\"\$ac_srcdir\"" ||
 	{ { echo "$as_me:$LINENO: error: $ac_sub_configure failed for $ac_dir" >&5
 echo "$as_me: error: $ac_sub_configure failed for $ac_dir" >&2;}
    { (exit 1); exit 1; }; }
     fi
 
-    cd $ac_popdir
+    cd "$ac_popdir"
   done
 fi
 
diff --git a/newlib/confsubdir.m4 b/newlib/confsubdir.m4
new file mode 100644
index 000000000..4e1e8c464
--- /dev/null
+++ b/newlib/confsubdir.m4
@@ -0,0 +1,127 @@
+dnl Fix Autoconf-2.59 AC_CONFIG_SUBDIRS whitespace mangling,
+dnl by overriding the broken internal Autoconf macro with a
+dnl backport of the 2.60 fix.
+dnl
+dnl This file should be a no-op for Autoconf versions != 2.59.
+dnl It can be removed once the complete tree has moved to a
+dnl newer Autoconf version.
+
+dnl m4_PACKAGE_VERSION is an undocumented Autoconf macro.
+dnl We use it because this fix is intended for 2.59 only.
+dnl A feature test for the broken AC_CONFIG_SUBDIRS instead
+dnl would be better but is tricky.
+dnl
+dnl Use ifdef/ifelse over m4_ifdef/m4_ifelse to be clean for 2.13.
+dnl Redefine AC_CONFIG_SUBDIRS so aclocal pulls in this file
+dnl when needed.
+
+ifdef([m4_PACKAGE_VERSION],
+[ifelse(m4_PACKAGE_VERSION, [2.59], [
+
+dnl Redefine AC_CONFIG_SUBDIRS so this file is picked up if needed.
+AC_DEFUN([AC_CONFIG_SUBDIRS], defn([AC_CONFIG_SUBDIRS]))
+
+dnl Override the broken macro.
+# _AC_OUTPUT_SUBDIRS
+# ------------------
+# This is a subroutine of AC_OUTPUT, but it does not go into
+# config.status, rather, it is called after running config.status.
+m4_define([_AC_OUTPUT_SUBDIRS],
+[
+#
+# CONFIG_SUBDIRS section, as fixed in confsubdir.m4.
+#
+if test "$no_recursion" != yes; then
+
+  # Remove --cache-file and --srcdir arguments so they do not pile up.
+  ac_sub_configure_args=
+  ac_prev=
+  eval "set x $ac_configure_args"
+  shift
+  for ac_arg
+  do
+    if test -n "$ac_prev"; then
+      ac_prev=
+      continue
+    fi
+    case $ac_arg in
+    -cache-file | --cache-file | --cache-fil | --cache-fi \
+    | --cache-f | --cache- | --cache | --cach | --cac | --ca | --c)
+      ac_prev=cache_file ;;
+    -cache-file=* | --cache-file=* | --cache-fil=* | --cache-fi=* \
+    | --cache-f=* | --cache-=* | --cache=* | --cach=* | --cac=* | --ca=* \
+    | --c=*)
+      ;;
+    --config-cache | -C)
+      ;;
+    -srcdir | --srcdir | --srcdi | --srcd | --src | --sr)
+      ac_prev=srcdir ;;
+    -srcdir=* | --srcdir=* | --srcdi=* | --srcd=* | --src=* | --sr=*)
+      ;;
+    -prefix | --prefix | --prefi | --pref | --pre | --pr | --p)
+      ac_prev=prefix ;;
+    -prefix=* | --prefix=* | --prefi=* | --pref=* | --pre=* | --pr=* | --p=*)
+      ;;
+    *)
+      case $ac_arg in
+      *\'*) ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+      esac
+      ac_sub_configure_args="$ac_sub_configure_args '$ac_arg'" ;;
+    esac
+  done
+
+  # Always prepend --prefix to ensure using the same prefix
+  # in subdir configurations.
+  ac_arg="--prefix=$prefix"
+  case $ac_arg in
+  *\'*) ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+  esac
+  ac_sub_configure_args="$ac_arg $ac_sub_configure_args"
+
+  ac_popdir=`pwd`
+  for ac_dir in : $subdirs; do test "x$ac_dir" = x: && continue
+
+    # Do not complain, so a configure script can configure whichever
+    # parts of a large source tree are present.
+    test -d "$srcdir/$ac_dir" || continue
+
+    AC_MSG_NOTICE([configuring in $ac_dir])
+    AS_MKDIR_P(["$ac_dir"])
+    _AC_SRCPATHS(["$ac_dir"])
+
+    cd "$ac_dir"
+
+    # Check for guested configure; otherwise get Cygnus style configure.
+    if test -f "$ac_srcdir/configure.gnu"; then
+      ac_sub_configure=$ac_srcdir/configure.gnu
+    elif test -f "$ac_srcdir/configure"; then
+      ac_sub_configure=$ac_srcdir/configure
+    elif test -f "$ac_srcdir/configure.in"; then
+      # This should be Cygnus configure.
+      ac_sub_configure=$ac_aux_dir/configure
+    else
+      AC_MSG_WARN([no configuration information is in $ac_dir])
+      ac_sub_configure=
+    fi
+
+    # The recursion is here.
+    if test -n "$ac_sub_configure"; then
+      # Make the cache file name correct relative to the subdirectory.
+      case $cache_file in
+      [[\\/]]* | ?:[[\\/]]* ) ac_sub_cache_file=$cache_file ;;
+      *) # Relative path.
+	ac_sub_cache_file=$ac_top_builddir$cache_file ;;
+      esac
+
+      AC_MSG_NOTICE([running $SHELL $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir])
+      # The eval makes quoting arguments work.
+      eval "\$SHELL \"\$ac_sub_configure\" $ac_sub_configure_args \
+	   --cache-file=\"\$ac_sub_cache_file\" --srcdir=\"\$ac_srcdir\"" ||
+	AC_MSG_ERROR([$ac_sub_configure failed for $ac_dir])
+    fi
+
+    cd "$ac_popdir"
+  done
+fi
+])# _AC_OUTPUT_SUBDIRS
+])])
diff --git a/newlib/libc/Makefile.in b/newlib/libc/Makefile.in
index 71fd3c12b..85e0c19ec 100644
--- a/newlib/libc/Makefile.in
+++ b/newlib/libc/Makefile.in
@@ -47,7 +47,8 @@ DIST_COMMON = $(srcdir)/../../config.guess $(srcdir)/../../config.sub \
 subdir = .
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/../acinclude.m4 \
-	$(top_srcdir)/../libtool.m4 $(top_srcdir)/configure.in
+	$(top_srcdir)/../confsubdir.m4 $(top_srcdir)/../libtool.m4 \
+	$(top_srcdir)/configure.in
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 am__CONFIG_DISTCLEAN_FILES = config.status config.cache config.log \
diff --git a/newlib/libc/aclocal.m4 b/newlib/libc/aclocal.m4
index ac69199fa..c89658a30 100644
--- a/newlib/libc/aclocal.m4
+++ b/newlib/libc/aclocal.m4
@@ -878,4 +878,5 @@ AC_SUBST([am__untar])
 ]) # _AM_PROG_TAR
 
 m4_include([../acinclude.m4])
+m4_include([../confsubdir.m4])
 m4_include([../libtool.m4])
diff --git a/newlib/libc/argz/Makefile.in b/newlib/libc/argz/Makefile.in
index 4cfa7bbbe..dd246bc67 100644
--- a/newlib/libc/argz/Makefile.in
+++ b/newlib/libc/argz/Makefile.in
@@ -43,7 +43,8 @@ DIST_COMMON = $(srcdir)/../../Makefile.shared $(srcdir)/Makefile.in \
 subdir = argz
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/../acinclude.m4 \
-	$(top_srcdir)/../libtool.m4 $(top_srcdir)/configure.in
+	$(top_srcdir)/../confsubdir.m4 $(top_srcdir)/../libtool.m4 \
+	$(top_srcdir)/configure.in
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(SHELL) $(top_srcdir)/../../mkinstalldirs
diff --git a/newlib/libc/configure b/newlib/libc/configure
index 9d85348f5..58a300028 100755
--- a/newlib/libc/configure
+++ b/newlib/libc/configure
@@ -6435,14 +6435,17 @@ if test "$no_create" != yes; then
 fi
 
 #
-# CONFIG_SUBDIRS section.
+# CONFIG_SUBDIRS section, as fixed in confsubdir.m4.
 #
 if test "$no_recursion" != yes; then
 
   # Remove --cache-file and --srcdir arguments so they do not pile up.
   ac_sub_configure_args=
   ac_prev=
-  for ac_arg in $ac_configure_args; do
+  eval "set x $ac_configure_args"
+  shift
+  for ac_arg
+  do
     if test -n "$ac_prev"; then
       ac_prev=
       continue
@@ -6465,20 +6468,28 @@ if test "$no_recursion" != yes; then
       ac_prev=prefix ;;
     -prefix=* | --prefix=* | --prefi=* | --pref=* | --pre=* | --pr=* | --p=*)
       ;;
-    *) ac_sub_configure_args="$ac_sub_configure_args $ac_arg" ;;
+    *)
+      case $ac_arg in
+      *\'*) ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+      esac
+      ac_sub_configure_args="$ac_sub_configure_args '$ac_arg'" ;;
     esac
   done
 
   # Always prepend --prefix to ensure using the same prefix
   # in subdir configurations.
-  ac_sub_configure_args="--prefix=$prefix $ac_sub_configure_args"
+  ac_arg="--prefix=$prefix"
+  case $ac_arg in
+  *\'*) ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+  esac
+  ac_sub_configure_args="$ac_arg $ac_sub_configure_args"
 
   ac_popdir=`pwd`
   for ac_dir in : $subdirs; do test "x$ac_dir" = x: && continue
 
     # Do not complain, so a configure script can configure whichever
     # parts of a large source tree are present.
-    test -d $srcdir/$ac_dir || continue
+    test -d "$srcdir/$ac_dir" || continue
 
     { echo "$as_me:$LINENO: configuring in $ac_dir" >&5
 echo "$as_me: configuring in $ac_dir" >&6;}
@@ -6573,15 +6584,16 @@ case $ac_abs_builddir in
 esac
 
 
-    cd $ac_dir
+    cd "$ac_dir"
 
     # Check for guested configure; otherwise get Cygnus style configure.
-    if test -f $ac_srcdir/configure.gnu; then
-      ac_sub_configure="$SHELL '$ac_srcdir/configure.gnu'"
-    elif test -f $ac_srcdir/configure; then
-      ac_sub_configure="$SHELL '$ac_srcdir/configure'"
-    elif test -f $ac_srcdir/configure.in; then
-      ac_sub_configure=$ac_configure
+    if test -f "$ac_srcdir/configure.gnu"; then
+      ac_sub_configure=$ac_srcdir/configure.gnu
+    elif test -f "$ac_srcdir/configure"; then
+      ac_sub_configure=$ac_srcdir/configure
+    elif test -f "$ac_srcdir/configure.in"; then
+      # This should be Cygnus configure.
+      ac_sub_configure=$ac_aux_dir/configure
     else
       { echo "$as_me:$LINENO: WARNING: no configuration information is in $ac_dir" >&5
 echo "$as_me: WARNING: no configuration information is in $ac_dir" >&2;}
@@ -6597,17 +6609,17 @@ echo "$as_me: WARNING: no configuration information is in $ac_dir" >&2;}
 	ac_sub_cache_file=$ac_top_builddir$cache_file ;;
       esac
 
-      { echo "$as_me:$LINENO: running $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&5
-echo "$as_me: running $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&6;}
+      { echo "$as_me:$LINENO: running $SHELL $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&5
+echo "$as_me: running $SHELL $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&6;}
       # The eval makes quoting arguments work.
-      eval $ac_sub_configure $ac_sub_configure_args \
-	   --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir ||
+      eval "\$SHELL \"\$ac_sub_configure\" $ac_sub_configure_args \
+	   --cache-file=\"\$ac_sub_cache_file\" --srcdir=\"\$ac_srcdir\"" ||
 	{ { echo "$as_me:$LINENO: error: $ac_sub_configure failed for $ac_dir" >&5
 echo "$as_me: error: $ac_sub_configure failed for $ac_dir" >&2;}
    { (exit 1); exit 1; }; }
     fi
 
-    cd $ac_popdir
+    cd "$ac_popdir"
   done
 fi
 
diff --git a/newlib/libc/ctype/Makefile.in b/newlib/libc/ctype/Makefile.in
index 27bf7dece..22a312967 100644
--- a/newlib/libc/ctype/Makefile.in
+++ b/newlib/libc/ctype/Makefile.in
@@ -43,7 +43,8 @@ DIST_COMMON = $(srcdir)/../../Makefile.shared $(srcdir)/Makefile.in \
 subdir = ctype
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/../acinclude.m4 \
-	$(top_srcdir)/../libtool.m4 $(top_srcdir)/configure.in
+	$(top_srcdir)/../confsubdir.m4 $(top_srcdir)/../libtool.m4 \
+	$(top_srcdir)/configure.in
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(SHELL) $(top_srcdir)/../../mkinstalldirs
diff --git a/newlib/libc/errno/Makefile.in b/newlib/libc/errno/Makefile.in
index 1238acc5c..b948b0745 100644
--- a/newlib/libc/errno/Makefile.in
+++ b/newlib/libc/errno/Makefile.in
@@ -43,7 +43,8 @@ DIST_COMMON = $(srcdir)/../../Makefile.shared $(srcdir)/Makefile.in \
 subdir = errno
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/../acinclude.m4 \
-	$(top_srcdir)/../libtool.m4 $(top_srcdir)/configure.in
+	$(top_srcdir)/../confsubdir.m4 $(top_srcdir)/../libtool.m4 \
+	$(top_srcdir)/configure.in
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(SHELL) $(top_srcdir)/../../mkinstalldirs
diff --git a/newlib/libc/iconv/Makefile.in b/newlib/libc/iconv/Makefile.in
index e55141906..e8afe2e5e 100644
--- a/newlib/libc/iconv/Makefile.in
+++ b/newlib/libc/iconv/Makefile.in
@@ -41,7 +41,8 @@ DIST_COMMON = $(srcdir)/../../Makefile.shared $(srcdir)/Makefile.in \
 subdir = iconv
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/../acinclude.m4 \
-	$(top_srcdir)/../libtool.m4 $(top_srcdir)/configure.in
+	$(top_srcdir)/../confsubdir.m4 $(top_srcdir)/../libtool.m4 \
+	$(top_srcdir)/configure.in
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(SHELL) $(top_srcdir)/../../mkinstalldirs
diff --git a/newlib/libc/iconv/ccs/Makefile.in b/newlib/libc/iconv/ccs/Makefile.in
index 2f3e9215f..e3440080d 100644
--- a/newlib/libc/iconv/ccs/Makefile.in
+++ b/newlib/libc/iconv/ccs/Makefile.in
@@ -42,7 +42,8 @@ DIST_COMMON = $(srcdir)/../../../Makefile.shared $(srcdir)/Makefile.in \
 subdir = iconv/ccs
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/../acinclude.m4 \
-	$(top_srcdir)/../libtool.m4 $(top_srcdir)/configure.in
+	$(top_srcdir)/../confsubdir.m4 $(top_srcdir)/../libtool.m4 \
+	$(top_srcdir)/configure.in
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(SHELL) $(top_srcdir)/../../mkinstalldirs
diff --git a/newlib/libc/iconv/ccs/binary/Makefile.in b/newlib/libc/iconv/ccs/binary/Makefile.in
index 635db7bcc..48730cef0 100644
--- a/newlib/libc/iconv/ccs/binary/Makefile.in
+++ b/newlib/libc/iconv/ccs/binary/Makefile.in
@@ -41,7 +41,8 @@ DIST_COMMON = $(srcdir)/../../../../Makefile.shared \
 subdir = iconv/ccs/binary
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/../acinclude.m4 \
-	$(top_srcdir)/../libtool.m4 $(top_srcdir)/configure.in
+	$(top_srcdir)/../confsubdir.m4 $(top_srcdir)/../libtool.m4 \
+	$(top_srcdir)/configure.in
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(SHELL) $(top_srcdir)/../../mkinstalldirs
diff --git a/newlib/libc/iconv/ces/Makefile.in b/newlib/libc/iconv/ces/Makefile.in
index 5959174a8..bac2923f2 100644
--- a/newlib/libc/iconv/ces/Makefile.in
+++ b/newlib/libc/iconv/ces/Makefile.in
@@ -42,7 +42,8 @@ DIST_COMMON = $(srcdir)/../../../Makefile.shared $(srcdir)/Makefile.in \
 subdir = iconv/ces
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/../acinclude.m4 \
-	$(top_srcdir)/../libtool.m4 $(top_srcdir)/configure.in
+	$(top_srcdir)/../confsubdir.m4 $(top_srcdir)/../libtool.m4 \
+	$(top_srcdir)/configure.in
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(SHELL) $(top_srcdir)/../../mkinstalldirs
diff --git a/newlib/libc/iconv/lib/Makefile.in b/newlib/libc/iconv/lib/Makefile.in
index c114deda0..68b907c54 100644
--- a/newlib/libc/iconv/lib/Makefile.in
+++ b/newlib/libc/iconv/lib/Makefile.in
@@ -42,7 +42,8 @@ DIST_COMMON = $(srcdir)/../../../Makefile.shared $(srcdir)/Makefile.in \
 subdir = iconv/lib
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/../acinclude.m4 \
-	$(top_srcdir)/../libtool.m4 $(top_srcdir)/configure.in
+	$(top_srcdir)/../confsubdir.m4 $(top_srcdir)/../libtool.m4 \
+	$(top_srcdir)/configure.in
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(SHELL) $(top_srcdir)/../../mkinstalldirs
diff --git a/newlib/libc/locale/Makefile.in b/newlib/libc/locale/Makefile.in
index 848d358dc..255d2c786 100644
--- a/newlib/libc/locale/Makefile.in
+++ b/newlib/libc/locale/Makefile.in
@@ -43,7 +43,8 @@ DIST_COMMON = $(srcdir)/../../Makefile.shared $(srcdir)/Makefile.in \
 subdir = locale
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/../acinclude.m4 \
-	$(top_srcdir)/../libtool.m4 $(top_srcdir)/configure.in
+	$(top_srcdir)/../confsubdir.m4 $(top_srcdir)/../libtool.m4 \
+	$(top_srcdir)/configure.in
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(SHELL) $(top_srcdir)/../../mkinstalldirs
diff --git a/newlib/libc/machine/Makefile.in b/newlib/libc/machine/Makefile.in
index ae510d909..2c23711f0 100644
--- a/newlib/libc/machine/Makefile.in
+++ b/newlib/libc/machine/Makefile.in
@@ -45,6 +45,7 @@ DIST_COMMON = $(srcdir)/../../../config.guess \
 subdir = .
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/../../acinclude.m4 \
+	$(top_srcdir)/../../confsubdir.m4 \
 	$(top_srcdir)/../../libtool.m4 $(top_srcdir)/configure.in
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
diff --git a/newlib/libc/machine/aclocal.m4 b/newlib/libc/machine/aclocal.m4
index a8a66b57f..2c75c5405 100644
--- a/newlib/libc/machine/aclocal.m4
+++ b/newlib/libc/machine/aclocal.m4
@@ -878,4 +878,5 @@ AC_SUBST([am__untar])
 ]) # _AM_PROG_TAR
 
 m4_include([../../acinclude.m4])
+m4_include([../../confsubdir.m4])
 m4_include([../../libtool.m4])
diff --git a/newlib/libc/machine/configure b/newlib/libc/machine/configure
index dc98cced1..f3f813111 100755
--- a/newlib/libc/machine/configure
+++ b/newlib/libc/machine/configure
@@ -6344,14 +6344,17 @@ if test "$no_create" != yes; then
 fi
 
 #
-# CONFIG_SUBDIRS section.
+# CONFIG_SUBDIRS section, as fixed in confsubdir.m4.
 #
 if test "$no_recursion" != yes; then
 
   # Remove --cache-file and --srcdir arguments so they do not pile up.
   ac_sub_configure_args=
   ac_prev=
-  for ac_arg in $ac_configure_args; do
+  eval "set x $ac_configure_args"
+  shift
+  for ac_arg
+  do
     if test -n "$ac_prev"; then
       ac_prev=
       continue
@@ -6374,20 +6377,28 @@ if test "$no_recursion" != yes; then
       ac_prev=prefix ;;
     -prefix=* | --prefix=* | --prefi=* | --pref=* | --pre=* | --pr=* | --p=*)
       ;;
-    *) ac_sub_configure_args="$ac_sub_configure_args $ac_arg" ;;
+    *)
+      case $ac_arg in
+      *\'*) ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+      esac
+      ac_sub_configure_args="$ac_sub_configure_args '$ac_arg'" ;;
     esac
   done
 
   # Always prepend --prefix to ensure using the same prefix
   # in subdir configurations.
-  ac_sub_configure_args="--prefix=$prefix $ac_sub_configure_args"
+  ac_arg="--prefix=$prefix"
+  case $ac_arg in
+  *\'*) ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+  esac
+  ac_sub_configure_args="$ac_arg $ac_sub_configure_args"
 
   ac_popdir=`pwd`
   for ac_dir in : $subdirs; do test "x$ac_dir" = x: && continue
 
     # Do not complain, so a configure script can configure whichever
     # parts of a large source tree are present.
-    test -d $srcdir/$ac_dir || continue
+    test -d "$srcdir/$ac_dir" || continue
 
     { echo "$as_me:$LINENO: configuring in $ac_dir" >&5
 echo "$as_me: configuring in $ac_dir" >&6;}
@@ -6482,15 +6493,16 @@ case $ac_abs_builddir in
 esac
 
 
-    cd $ac_dir
+    cd "$ac_dir"
 
     # Check for guested configure; otherwise get Cygnus style configure.
-    if test -f $ac_srcdir/configure.gnu; then
-      ac_sub_configure="$SHELL '$ac_srcdir/configure.gnu'"
-    elif test -f $ac_srcdir/configure; then
-      ac_sub_configure="$SHELL '$ac_srcdir/configure'"
-    elif test -f $ac_srcdir/configure.in; then
-      ac_sub_configure=$ac_configure
+    if test -f "$ac_srcdir/configure.gnu"; then
+      ac_sub_configure=$ac_srcdir/configure.gnu
+    elif test -f "$ac_srcdir/configure"; then
+      ac_sub_configure=$ac_srcdir/configure
+    elif test -f "$ac_srcdir/configure.in"; then
+      # This should be Cygnus configure.
+      ac_sub_configure=$ac_aux_dir/configure
     else
       { echo "$as_me:$LINENO: WARNING: no configuration information is in $ac_dir" >&5
 echo "$as_me: WARNING: no configuration information is in $ac_dir" >&2;}
@@ -6506,17 +6518,17 @@ echo "$as_me: WARNING: no configuration information is in $ac_dir" >&2;}
 	ac_sub_cache_file=$ac_top_builddir$cache_file ;;
       esac
 
-      { echo "$as_me:$LINENO: running $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&5
-echo "$as_me: running $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&6;}
+      { echo "$as_me:$LINENO: running $SHELL $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&5
+echo "$as_me: running $SHELL $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&6;}
       # The eval makes quoting arguments work.
-      eval $ac_sub_configure $ac_sub_configure_args \
-	   --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir ||
+      eval "\$SHELL \"\$ac_sub_configure\" $ac_sub_configure_args \
+	   --cache-file=\"\$ac_sub_cache_file\" --srcdir=\"\$ac_srcdir\"" ||
 	{ { echo "$as_me:$LINENO: error: $ac_sub_configure failed for $ac_dir" >&5
 echo "$as_me: error: $ac_sub_configure failed for $ac_dir" >&2;}
    { (exit 1); exit 1; }; }
     fi
 
-    cd $ac_popdir
+    cd "$ac_popdir"
   done
 fi
 
diff --git a/newlib/libc/misc/Makefile.in b/newlib/libc/misc/Makefile.in
index 5956d0fc4..bce2a0de8 100644
--- a/newlib/libc/misc/Makefile.in
+++ b/newlib/libc/misc/Makefile.in
@@ -43,7 +43,8 @@ DIST_COMMON = $(srcdir)/../../Makefile.shared $(srcdir)/Makefile.in \
 subdir = misc
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/../acinclude.m4 \
-	$(top_srcdir)/../libtool.m4 $(top_srcdir)/configure.in
+	$(top_srcdir)/../confsubdir.m4 $(top_srcdir)/../libtool.m4 \
+	$(top_srcdir)/configure.in
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(SHELL) $(top_srcdir)/../../mkinstalldirs
diff --git a/newlib/libc/posix/Makefile.in b/newlib/libc/posix/Makefile.in
index 69ef701ea..502b5e9fb 100644
--- a/newlib/libc/posix/Makefile.in
+++ b/newlib/libc/posix/Makefile.in
@@ -43,7 +43,8 @@ DIST_COMMON = $(srcdir)/../../Makefile.shared $(srcdir)/Makefile.in \
 subdir = posix
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/../acinclude.m4 \
-	$(top_srcdir)/../libtool.m4 $(top_srcdir)/configure.in
+	$(top_srcdir)/../confsubdir.m4 $(top_srcdir)/../libtool.m4 \
+	$(top_srcdir)/configure.in
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(SHELL) $(top_srcdir)/../../mkinstalldirs
diff --git a/newlib/libc/reent/Makefile.in b/newlib/libc/reent/Makefile.in
index 5d5d70e80..b954690f5 100644
--- a/newlib/libc/reent/Makefile.in
+++ b/newlib/libc/reent/Makefile.in
@@ -43,7 +43,8 @@ DIST_COMMON = $(srcdir)/../../Makefile.shared $(srcdir)/Makefile.in \
 subdir = reent
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/../acinclude.m4 \
-	$(top_srcdir)/../libtool.m4 $(top_srcdir)/configure.in
+	$(top_srcdir)/../confsubdir.m4 $(top_srcdir)/../libtool.m4 \
+	$(top_srcdir)/configure.in
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(SHELL) $(top_srcdir)/../../mkinstalldirs
diff --git a/newlib/libc/search/Makefile.in b/newlib/libc/search/Makefile.in
index e921fcf3e..13569255b 100644
--- a/newlib/libc/search/Makefile.in
+++ b/newlib/libc/search/Makefile.in
@@ -43,7 +43,8 @@ DIST_COMMON = $(srcdir)/../../Makefile.shared $(srcdir)/Makefile.in \
 subdir = search
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/../acinclude.m4 \
-	$(top_srcdir)/../libtool.m4 $(top_srcdir)/configure.in
+	$(top_srcdir)/../confsubdir.m4 $(top_srcdir)/../libtool.m4 \
+	$(top_srcdir)/configure.in
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(SHELL) $(top_srcdir)/../../mkinstalldirs
diff --git a/newlib/libc/signal/Makefile.in b/newlib/libc/signal/Makefile.in
index 52e018080..8c9f221c8 100644
--- a/newlib/libc/signal/Makefile.in
+++ b/newlib/libc/signal/Makefile.in
@@ -43,7 +43,8 @@ DIST_COMMON = $(srcdir)/../../Makefile.shared $(srcdir)/Makefile.in \
 subdir = signal
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/../acinclude.m4 \
-	$(top_srcdir)/../libtool.m4 $(top_srcdir)/configure.in
+	$(top_srcdir)/../confsubdir.m4 $(top_srcdir)/../libtool.m4 \
+	$(top_srcdir)/configure.in
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(SHELL) $(top_srcdir)/../../mkinstalldirs
diff --git a/newlib/libc/stdio/Makefile.in b/newlib/libc/stdio/Makefile.in
index 67ad99807..5dd4ed7ec 100644
--- a/newlib/libc/stdio/Makefile.in
+++ b/newlib/libc/stdio/Makefile.in
@@ -43,7 +43,8 @@ DIST_COMMON = $(srcdir)/../../Makefile.shared $(srcdir)/Makefile.in \
 subdir = stdio
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/../acinclude.m4 \
-	$(top_srcdir)/../libtool.m4 $(top_srcdir)/configure.in
+	$(top_srcdir)/../confsubdir.m4 $(top_srcdir)/../libtool.m4 \
+	$(top_srcdir)/configure.in
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(SHELL) $(top_srcdir)/../../mkinstalldirs
diff --git a/newlib/libc/stdio64/Makefile.in b/newlib/libc/stdio64/Makefile.in
index af644564b..a388e21ce 100644
--- a/newlib/libc/stdio64/Makefile.in
+++ b/newlib/libc/stdio64/Makefile.in
@@ -43,7 +43,8 @@ DIST_COMMON = $(srcdir)/../../Makefile.shared $(srcdir)/Makefile.in \
 subdir = stdio64
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/../acinclude.m4 \
-	$(top_srcdir)/../libtool.m4 $(top_srcdir)/configure.in
+	$(top_srcdir)/../confsubdir.m4 $(top_srcdir)/../libtool.m4 \
+	$(top_srcdir)/configure.in
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(SHELL) $(top_srcdir)/../../mkinstalldirs
diff --git a/newlib/libc/stdlib/Makefile.in b/newlib/libc/stdlib/Makefile.in
index db91687fb..59e504f27 100644
--- a/newlib/libc/stdlib/Makefile.in
+++ b/newlib/libc/stdlib/Makefile.in
@@ -43,7 +43,8 @@ DIST_COMMON = $(srcdir)/../../Makefile.shared $(srcdir)/Makefile.in \
 subdir = stdlib
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/../acinclude.m4 \
-	$(top_srcdir)/../libtool.m4 $(top_srcdir)/configure.in
+	$(top_srcdir)/../confsubdir.m4 $(top_srcdir)/../libtool.m4 \
+	$(top_srcdir)/configure.in
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(SHELL) $(top_srcdir)/../../mkinstalldirs
diff --git a/newlib/libc/string/Makefile.in b/newlib/libc/string/Makefile.in
index c5103f6b1..f96fc2de5 100644
--- a/newlib/libc/string/Makefile.in
+++ b/newlib/libc/string/Makefile.in
@@ -43,7 +43,8 @@ DIST_COMMON = $(srcdir)/../../Makefile.shared $(srcdir)/Makefile.in \
 subdir = string
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/../acinclude.m4 \
-	$(top_srcdir)/../libtool.m4 $(top_srcdir)/configure.in
+	$(top_srcdir)/../confsubdir.m4 $(top_srcdir)/../libtool.m4 \
+	$(top_srcdir)/configure.in
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(SHELL) $(top_srcdir)/../../mkinstalldirs
diff --git a/newlib/libc/sys/Makefile.in b/newlib/libc/sys/Makefile.in
index e56e4f242..8198d1059 100644
--- a/newlib/libc/sys/Makefile.in
+++ b/newlib/libc/sys/Makefile.in
@@ -46,6 +46,7 @@ DIST_COMMON = $(srcdir)/../../../config.guess \
 subdir = .
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/../../acinclude.m4 \
+	$(top_srcdir)/../../confsubdir.m4 \
 	$(top_srcdir)/../../libtool.m4 $(top_srcdir)/configure.in
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
diff --git a/newlib/libc/sys/aclocal.m4 b/newlib/libc/sys/aclocal.m4
index a8a66b57f..2c75c5405 100644
--- a/newlib/libc/sys/aclocal.m4
+++ b/newlib/libc/sys/aclocal.m4
@@ -878,4 +878,5 @@ AC_SUBST([am__untar])
 ]) # _AM_PROG_TAR
 
 m4_include([../../acinclude.m4])
+m4_include([../../confsubdir.m4])
 m4_include([../../libtool.m4])
diff --git a/newlib/libc/sys/configure b/newlib/libc/sys/configure
index ba7031135..c19c61a56 100755
--- a/newlib/libc/sys/configure
+++ b/newlib/libc/sys/configure
@@ -6290,14 +6290,17 @@ if test "$no_create" != yes; then
 fi
 
 #
-# CONFIG_SUBDIRS section.
+# CONFIG_SUBDIRS section, as fixed in confsubdir.m4.
 #
 if test "$no_recursion" != yes; then
 
   # Remove --cache-file and --srcdir arguments so they do not pile up.
   ac_sub_configure_args=
   ac_prev=
-  for ac_arg in $ac_configure_args; do
+  eval "set x $ac_configure_args"
+  shift
+  for ac_arg
+  do
     if test -n "$ac_prev"; then
       ac_prev=
       continue
@@ -6320,20 +6323,28 @@ if test "$no_recursion" != yes; then
       ac_prev=prefix ;;
     -prefix=* | --prefix=* | --prefi=* | --pref=* | --pre=* | --pr=* | --p=*)
       ;;
-    *) ac_sub_configure_args="$ac_sub_configure_args $ac_arg" ;;
+    *)
+      case $ac_arg in
+      *\'*) ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+      esac
+      ac_sub_configure_args="$ac_sub_configure_args '$ac_arg'" ;;
     esac
   done
 
   # Always prepend --prefix to ensure using the same prefix
   # in subdir configurations.
-  ac_sub_configure_args="--prefix=$prefix $ac_sub_configure_args"
+  ac_arg="--prefix=$prefix"
+  case $ac_arg in
+  *\'*) ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+  esac
+  ac_sub_configure_args="$ac_arg $ac_sub_configure_args"
 
   ac_popdir=`pwd`
   for ac_dir in : $subdirs; do test "x$ac_dir" = x: && continue
 
     # Do not complain, so a configure script can configure whichever
     # parts of a large source tree are present.
-    test -d $srcdir/$ac_dir || continue
+    test -d "$srcdir/$ac_dir" || continue
 
     { echo "$as_me:$LINENO: configuring in $ac_dir" >&5
 echo "$as_me: configuring in $ac_dir" >&6;}
@@ -6428,15 +6439,16 @@ case $ac_abs_builddir in
 esac
 
 
-    cd $ac_dir
+    cd "$ac_dir"
 
     # Check for guested configure; otherwise get Cygnus style configure.
-    if test -f $ac_srcdir/configure.gnu; then
-      ac_sub_configure="$SHELL '$ac_srcdir/configure.gnu'"
-    elif test -f $ac_srcdir/configure; then
-      ac_sub_configure="$SHELL '$ac_srcdir/configure'"
-    elif test -f $ac_srcdir/configure.in; then
-      ac_sub_configure=$ac_configure
+    if test -f "$ac_srcdir/configure.gnu"; then
+      ac_sub_configure=$ac_srcdir/configure.gnu
+    elif test -f "$ac_srcdir/configure"; then
+      ac_sub_configure=$ac_srcdir/configure
+    elif test -f "$ac_srcdir/configure.in"; then
+      # This should be Cygnus configure.
+      ac_sub_configure=$ac_aux_dir/configure
     else
       { echo "$as_me:$LINENO: WARNING: no configuration information is in $ac_dir" >&5
 echo "$as_me: WARNING: no configuration information is in $ac_dir" >&2;}
@@ -6452,17 +6464,17 @@ echo "$as_me: WARNING: no configuration information is in $ac_dir" >&2;}
 	ac_sub_cache_file=$ac_top_builddir$cache_file ;;
       esac
 
-      { echo "$as_me:$LINENO: running $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&5
-echo "$as_me: running $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&6;}
+      { echo "$as_me:$LINENO: running $SHELL $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&5
+echo "$as_me: running $SHELL $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&6;}
       # The eval makes quoting arguments work.
-      eval $ac_sub_configure $ac_sub_configure_args \
-	   --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir ||
+      eval "\$SHELL \"\$ac_sub_configure\" $ac_sub_configure_args \
+	   --cache-file=\"\$ac_sub_cache_file\" --srcdir=\"\$ac_srcdir\"" ||
 	{ { echo "$as_me:$LINENO: error: $ac_sub_configure failed for $ac_dir" >&5
 echo "$as_me: error: $ac_sub_configure failed for $ac_dir" >&2;}
    { (exit 1); exit 1; }; }
     fi
 
-    cd $ac_popdir
+    cd "$ac_popdir"
   done
 fi
 
diff --git a/newlib/libc/sys/linux/Makefile.in b/newlib/libc/sys/linux/Makefile.in
index 98496cf32..04fd28686 100644
--- a/newlib/libc/sys/linux/Makefile.in
+++ b/newlib/libc/sys/linux/Makefile.in
@@ -144,6 +144,7 @@ DIST_COMMON = $(srcdir)/../../../../config.guess \
 subdir = .
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/../../../acinclude.m4 \
+	$(top_srcdir)/../../../confsubdir.m4 \
 	$(top_srcdir)/../../../libtool.m4 $(top_srcdir)/configure.in
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
diff --git a/newlib/libc/sys/linux/aclocal.m4 b/newlib/libc/sys/linux/aclocal.m4
index 0bd13c07d..75348cc0f 100644
--- a/newlib/libc/sys/linux/aclocal.m4
+++ b/newlib/libc/sys/linux/aclocal.m4
@@ -878,4 +878,5 @@ AC_SUBST([am__untar])
 ]) # _AM_PROG_TAR
 
 m4_include([../../../acinclude.m4])
+m4_include([../../../confsubdir.m4])
 m4_include([../../../libtool.m4])
diff --git a/newlib/libc/sys/linux/argp/Makefile.in b/newlib/libc/sys/linux/argp/Makefile.in
index 3ad0bdc45..17bf1f749 100644
--- a/newlib/libc/sys/linux/argp/Makefile.in
+++ b/newlib/libc/sys/linux/argp/Makefile.in
@@ -43,6 +43,7 @@ DIST_COMMON = $(srcdir)/../../../../Makefile.shared \
 subdir = argp
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/../../../acinclude.m4 \
+	$(top_srcdir)/../../../confsubdir.m4 \
 	$(top_srcdir)/../../../libtool.m4 $(top_srcdir)/configure.in
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
diff --git a/newlib/libc/sys/linux/cmath/Makefile.in b/newlib/libc/sys/linux/cmath/Makefile.in
index f58192e08..73e1969f0 100644
--- a/newlib/libc/sys/linux/cmath/Makefile.in
+++ b/newlib/libc/sys/linux/cmath/Makefile.in
@@ -43,6 +43,7 @@ DIST_COMMON = $(srcdir)/../../../../Makefile.shared \
 subdir = cmath
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/../../../acinclude.m4 \
+	$(top_srcdir)/../../../confsubdir.m4 \
 	$(top_srcdir)/../../../libtool.m4 $(top_srcdir)/configure.in
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
diff --git a/newlib/libc/sys/linux/configure b/newlib/libc/sys/linux/configure
index 1f0af2e90..4f9ff9f7c 100755
--- a/newlib/libc/sys/linux/configure
+++ b/newlib/libc/sys/linux/configure
@@ -6225,14 +6225,17 @@ if test "$no_create" != yes; then
 fi
 
 #
-# CONFIG_SUBDIRS section.
+# CONFIG_SUBDIRS section, as fixed in confsubdir.m4.
 #
 if test "$no_recursion" != yes; then
 
   # Remove --cache-file and --srcdir arguments so they do not pile up.
   ac_sub_configure_args=
   ac_prev=
-  for ac_arg in $ac_configure_args; do
+  eval "set x $ac_configure_args"
+  shift
+  for ac_arg
+  do
     if test -n "$ac_prev"; then
       ac_prev=
       continue
@@ -6255,20 +6258,28 @@ if test "$no_recursion" != yes; then
       ac_prev=prefix ;;
     -prefix=* | --prefix=* | --prefi=* | --pref=* | --pre=* | --pr=* | --p=*)
       ;;
-    *) ac_sub_configure_args="$ac_sub_configure_args $ac_arg" ;;
+    *)
+      case $ac_arg in
+      *\'*) ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+      esac
+      ac_sub_configure_args="$ac_sub_configure_args '$ac_arg'" ;;
     esac
   done
 
   # Always prepend --prefix to ensure using the same prefix
   # in subdir configurations.
-  ac_sub_configure_args="--prefix=$prefix $ac_sub_configure_args"
+  ac_arg="--prefix=$prefix"
+  case $ac_arg in
+  *\'*) ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+  esac
+  ac_sub_configure_args="$ac_arg $ac_sub_configure_args"
 
   ac_popdir=`pwd`
   for ac_dir in : $subdirs; do test "x$ac_dir" = x: && continue
 
     # Do not complain, so a configure script can configure whichever
     # parts of a large source tree are present.
-    test -d $srcdir/$ac_dir || continue
+    test -d "$srcdir/$ac_dir" || continue
 
     { echo "$as_me:$LINENO: configuring in $ac_dir" >&5
 echo "$as_me: configuring in $ac_dir" >&6;}
@@ -6363,15 +6374,16 @@ case $ac_abs_builddir in
 esac
 
 
-    cd $ac_dir
+    cd "$ac_dir"
 
     # Check for guested configure; otherwise get Cygnus style configure.
-    if test -f $ac_srcdir/configure.gnu; then
-      ac_sub_configure="$SHELL '$ac_srcdir/configure.gnu'"
-    elif test -f $ac_srcdir/configure; then
-      ac_sub_configure="$SHELL '$ac_srcdir/configure'"
-    elif test -f $ac_srcdir/configure.in; then
-      ac_sub_configure=$ac_configure
+    if test -f "$ac_srcdir/configure.gnu"; then
+      ac_sub_configure=$ac_srcdir/configure.gnu
+    elif test -f "$ac_srcdir/configure"; then
+      ac_sub_configure=$ac_srcdir/configure
+    elif test -f "$ac_srcdir/configure.in"; then
+      # This should be Cygnus configure.
+      ac_sub_configure=$ac_aux_dir/configure
     else
       { echo "$as_me:$LINENO: WARNING: no configuration information is in $ac_dir" >&5
 echo "$as_me: WARNING: no configuration information is in $ac_dir" >&2;}
@@ -6387,17 +6399,17 @@ echo "$as_me: WARNING: no configuration information is in $ac_dir" >&2;}
 	ac_sub_cache_file=$ac_top_builddir$cache_file ;;
       esac
 
-      { echo "$as_me:$LINENO: running $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&5
-echo "$as_me: running $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&6;}
+      { echo "$as_me:$LINENO: running $SHELL $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&5
+echo "$as_me: running $SHELL $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&6;}
       # The eval makes quoting arguments work.
-      eval $ac_sub_configure $ac_sub_configure_args \
-	   --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir ||
+      eval "\$SHELL \"\$ac_sub_configure\" $ac_sub_configure_args \
+	   --cache-file=\"\$ac_sub_cache_file\" --srcdir=\"\$ac_srcdir\"" ||
 	{ { echo "$as_me:$LINENO: error: $ac_sub_configure failed for $ac_dir" >&5
 echo "$as_me: error: $ac_sub_configure failed for $ac_dir" >&2;}
    { (exit 1); exit 1; }; }
     fi
 
-    cd $ac_popdir
+    cd "$ac_popdir"
   done
 fi
 
diff --git a/newlib/libc/sys/linux/dl/Makefile.in b/newlib/libc/sys/linux/dl/Makefile.in
index 1aaa25fd5..57959416d 100644
--- a/newlib/libc/sys/linux/dl/Makefile.in
+++ b/newlib/libc/sys/linux/dl/Makefile.in
@@ -43,6 +43,7 @@ DIST_COMMON = $(srcdir)/../../../../Makefile.shared \
 subdir = dl
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/../../../acinclude.m4 \
+	$(top_srcdir)/../../../confsubdir.m4 \
 	$(top_srcdir)/../../../libtool.m4 $(top_srcdir)/configure.in
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
diff --git a/newlib/libc/sys/linux/iconv/Makefile.in b/newlib/libc/sys/linux/iconv/Makefile.in
index 21e6bac63..c76d63a2e 100644
--- a/newlib/libc/sys/linux/iconv/Makefile.in
+++ b/newlib/libc/sys/linux/iconv/Makefile.in
@@ -43,6 +43,7 @@ DIST_COMMON = $(srcdir)/../../../../Makefile.shared \
 subdir = iconv
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/../../../acinclude.m4 \
+	$(top_srcdir)/../../../confsubdir.m4 \
 	$(top_srcdir)/../../../libtool.m4 $(top_srcdir)/configure.in
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
diff --git a/newlib/libc/sys/linux/intl/Makefile.in b/newlib/libc/sys/linux/intl/Makefile.in
index 4e1f87c00..8ed8a2b4e 100644
--- a/newlib/libc/sys/linux/intl/Makefile.in
+++ b/newlib/libc/sys/linux/intl/Makefile.in
@@ -43,6 +43,7 @@ DIST_COMMON = $(srcdir)/../../../../Makefile.shared \
 subdir = intl
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/../../../acinclude.m4 \
+	$(top_srcdir)/../../../confsubdir.m4 \
 	$(top_srcdir)/../../../libtool.m4 $(top_srcdir)/configure.in
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
diff --git a/newlib/libc/sys/linux/linuxthreads/Makefile.in b/newlib/libc/sys/linux/linuxthreads/Makefile.in
index 7ee802821..5367d547a 100644
--- a/newlib/libc/sys/linux/linuxthreads/Makefile.in
+++ b/newlib/libc/sys/linux/linuxthreads/Makefile.in
@@ -119,6 +119,7 @@ DIST_COMMON = $(srcdir)/../../../../Makefile.shared \
 subdir = .
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/../../../../acinclude.m4 \
+	$(top_srcdir)/../../../../confsubdir.m4 \
 	$(top_srcdir)/../../../../libtool.m4 \
 	$(top_srcdir)/configure.in
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
diff --git a/newlib/libc/sys/linux/linuxthreads/aclocal.m4 b/newlib/libc/sys/linux/linuxthreads/aclocal.m4
index 37f08bdf4..4e3d2d40d 100644
--- a/newlib/libc/sys/linux/linuxthreads/aclocal.m4
+++ b/newlib/libc/sys/linux/linuxthreads/aclocal.m4
@@ -878,4 +878,5 @@ AC_SUBST([am__untar])
 ]) # _AM_PROG_TAR
 
 m4_include([../../../../acinclude.m4])
+m4_include([../../../../confsubdir.m4])
 m4_include([../../../../libtool.m4])
diff --git a/newlib/libc/sys/linux/linuxthreads/configure b/newlib/libc/sys/linux/linuxthreads/configure
index 2262a64b1..babd56d06 100755
--- a/newlib/libc/sys/linux/linuxthreads/configure
+++ b/newlib/libc/sys/linux/linuxthreads/configure
@@ -6194,14 +6194,17 @@ if test "$no_create" != yes; then
 fi
 
 #
-# CONFIG_SUBDIRS section.
+# CONFIG_SUBDIRS section, as fixed in confsubdir.m4.
 #
 if test "$no_recursion" != yes; then
 
   # Remove --cache-file and --srcdir arguments so they do not pile up.
   ac_sub_configure_args=
   ac_prev=
-  for ac_arg in $ac_configure_args; do
+  eval "set x $ac_configure_args"
+  shift
+  for ac_arg
+  do
     if test -n "$ac_prev"; then
       ac_prev=
       continue
@@ -6224,20 +6227,28 @@ if test "$no_recursion" != yes; then
       ac_prev=prefix ;;
     -prefix=* | --prefix=* | --prefi=* | --pref=* | --pre=* | --pr=* | --p=*)
       ;;
-    *) ac_sub_configure_args="$ac_sub_configure_args $ac_arg" ;;
+    *)
+      case $ac_arg in
+      *\'*) ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+      esac
+      ac_sub_configure_args="$ac_sub_configure_args '$ac_arg'" ;;
     esac
   done
 
   # Always prepend --prefix to ensure using the same prefix
   # in subdir configurations.
-  ac_sub_configure_args="--prefix=$prefix $ac_sub_configure_args"
+  ac_arg="--prefix=$prefix"
+  case $ac_arg in
+  *\'*) ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+  esac
+  ac_sub_configure_args="$ac_arg $ac_sub_configure_args"
 
   ac_popdir=`pwd`
   for ac_dir in : $subdirs; do test "x$ac_dir" = x: && continue
 
     # Do not complain, so a configure script can configure whichever
     # parts of a large source tree are present.
-    test -d $srcdir/$ac_dir || continue
+    test -d "$srcdir/$ac_dir" || continue
 
     { echo "$as_me:$LINENO: configuring in $ac_dir" >&5
 echo "$as_me: configuring in $ac_dir" >&6;}
@@ -6332,15 +6343,16 @@ case $ac_abs_builddir in
 esac
 
 
-    cd $ac_dir
+    cd "$ac_dir"
 
     # Check for guested configure; otherwise get Cygnus style configure.
-    if test -f $ac_srcdir/configure.gnu; then
-      ac_sub_configure="$SHELL '$ac_srcdir/configure.gnu'"
-    elif test -f $ac_srcdir/configure; then
-      ac_sub_configure="$SHELL '$ac_srcdir/configure'"
-    elif test -f $ac_srcdir/configure.in; then
-      ac_sub_configure=$ac_configure
+    if test -f "$ac_srcdir/configure.gnu"; then
+      ac_sub_configure=$ac_srcdir/configure.gnu
+    elif test -f "$ac_srcdir/configure"; then
+      ac_sub_configure=$ac_srcdir/configure
+    elif test -f "$ac_srcdir/configure.in"; then
+      # This should be Cygnus configure.
+      ac_sub_configure=$ac_aux_dir/configure
     else
       { echo "$as_me:$LINENO: WARNING: no configuration information is in $ac_dir" >&5
 echo "$as_me: WARNING: no configuration information is in $ac_dir" >&2;}
@@ -6356,17 +6368,17 @@ echo "$as_me: WARNING: no configuration information is in $ac_dir" >&2;}
 	ac_sub_cache_file=$ac_top_builddir$cache_file ;;
       esac
 
-      { echo "$as_me:$LINENO: running $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&5
-echo "$as_me: running $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&6;}
+      { echo "$as_me:$LINENO: running $SHELL $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&5
+echo "$as_me: running $SHELL $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&6;}
       # The eval makes quoting arguments work.
-      eval $ac_sub_configure $ac_sub_configure_args \
-	   --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir ||
+      eval "\$SHELL \"\$ac_sub_configure\" $ac_sub_configure_args \
+	   --cache-file=\"\$ac_sub_cache_file\" --srcdir=\"\$ac_srcdir\"" ||
 	{ { echo "$as_me:$LINENO: error: $ac_sub_configure failed for $ac_dir" >&5
 echo "$as_me: error: $ac_sub_configure failed for $ac_dir" >&2;}
    { (exit 1); exit 1; }; }
     fi
 
-    cd $ac_popdir
+    cd "$ac_popdir"
   done
 fi
 
diff --git a/newlib/libc/sys/linux/linuxthreads/machine/Makefile.in b/newlib/libc/sys/linux/linuxthreads/machine/Makefile.in
index 199001321..0bc36edb5 100644
--- a/newlib/libc/sys/linux/linuxthreads/machine/Makefile.in
+++ b/newlib/libc/sys/linux/linuxthreads/machine/Makefile.in
@@ -46,6 +46,7 @@ DIST_COMMON = $(srcdir)/../../../../../../config.guess \
 subdir = .
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/../../../../../acinclude.m4 \
+	$(top_srcdir)/../../../../../confsubdir.m4 \
 	$(top_srcdir)/../../../../../libtool.m4 \
 	$(top_srcdir)/configure.in
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
diff --git a/newlib/libc/sys/linux/linuxthreads/machine/aclocal.m4 b/newlib/libc/sys/linux/linuxthreads/machine/aclocal.m4
index f49fa816b..fde8f2529 100644
--- a/newlib/libc/sys/linux/linuxthreads/machine/aclocal.m4
+++ b/newlib/libc/sys/linux/linuxthreads/machine/aclocal.m4
@@ -878,4 +878,5 @@ AC_SUBST([am__untar])
 ]) # _AM_PROG_TAR
 
 m4_include([../../../../../acinclude.m4])
+m4_include([../../../../../confsubdir.m4])
 m4_include([../../../../../libtool.m4])
diff --git a/newlib/libc/sys/linux/linuxthreads/machine/configure b/newlib/libc/sys/linux/linuxthreads/machine/configure
index 220077b3d..0e96d65bd 100755
--- a/newlib/libc/sys/linux/linuxthreads/machine/configure
+++ b/newlib/libc/sys/linux/linuxthreads/machine/configure
@@ -6168,14 +6168,17 @@ if test "$no_create" != yes; then
 fi
 
 #
-# CONFIG_SUBDIRS section.
+# CONFIG_SUBDIRS section, as fixed in confsubdir.m4.
 #
 if test "$no_recursion" != yes; then
 
   # Remove --cache-file and --srcdir arguments so they do not pile up.
   ac_sub_configure_args=
   ac_prev=
-  for ac_arg in $ac_configure_args; do
+  eval "set x $ac_configure_args"
+  shift
+  for ac_arg
+  do
     if test -n "$ac_prev"; then
       ac_prev=
       continue
@@ -6198,20 +6201,28 @@ if test "$no_recursion" != yes; then
       ac_prev=prefix ;;
     -prefix=* | --prefix=* | --prefi=* | --pref=* | --pre=* | --pr=* | --p=*)
       ;;
-    *) ac_sub_configure_args="$ac_sub_configure_args $ac_arg" ;;
+    *)
+      case $ac_arg in
+      *\'*) ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+      esac
+      ac_sub_configure_args="$ac_sub_configure_args '$ac_arg'" ;;
     esac
   done
 
   # Always prepend --prefix to ensure using the same prefix
   # in subdir configurations.
-  ac_sub_configure_args="--prefix=$prefix $ac_sub_configure_args"
+  ac_arg="--prefix=$prefix"
+  case $ac_arg in
+  *\'*) ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+  esac
+  ac_sub_configure_args="$ac_arg $ac_sub_configure_args"
 
   ac_popdir=`pwd`
   for ac_dir in : $subdirs; do test "x$ac_dir" = x: && continue
 
     # Do not complain, so a configure script can configure whichever
     # parts of a large source tree are present.
-    test -d $srcdir/$ac_dir || continue
+    test -d "$srcdir/$ac_dir" || continue
 
     { echo "$as_me:$LINENO: configuring in $ac_dir" >&5
 echo "$as_me: configuring in $ac_dir" >&6;}
@@ -6306,15 +6317,16 @@ case $ac_abs_builddir in
 esac
 
 
-    cd $ac_dir
+    cd "$ac_dir"
 
     # Check for guested configure; otherwise get Cygnus style configure.
-    if test -f $ac_srcdir/configure.gnu; then
-      ac_sub_configure="$SHELL '$ac_srcdir/configure.gnu'"
-    elif test -f $ac_srcdir/configure; then
-      ac_sub_configure="$SHELL '$ac_srcdir/configure'"
-    elif test -f $ac_srcdir/configure.in; then
-      ac_sub_configure=$ac_configure
+    if test -f "$ac_srcdir/configure.gnu"; then
+      ac_sub_configure=$ac_srcdir/configure.gnu
+    elif test -f "$ac_srcdir/configure"; then
+      ac_sub_configure=$ac_srcdir/configure
+    elif test -f "$ac_srcdir/configure.in"; then
+      # This should be Cygnus configure.
+      ac_sub_configure=$ac_aux_dir/configure
     else
       { echo "$as_me:$LINENO: WARNING: no configuration information is in $ac_dir" >&5
 echo "$as_me: WARNING: no configuration information is in $ac_dir" >&2;}
@@ -6330,17 +6342,17 @@ echo "$as_me: WARNING: no configuration information is in $ac_dir" >&2;}
 	ac_sub_cache_file=$ac_top_builddir$cache_file ;;
       esac
 
-      { echo "$as_me:$LINENO: running $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&5
-echo "$as_me: running $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&6;}
+      { echo "$as_me:$LINENO: running $SHELL $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&5
+echo "$as_me: running $SHELL $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&6;}
       # The eval makes quoting arguments work.
-      eval $ac_sub_configure $ac_sub_configure_args \
-	   --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir ||
+      eval "\$SHELL \"\$ac_sub_configure\" $ac_sub_configure_args \
+	   --cache-file=\"\$ac_sub_cache_file\" --srcdir=\"\$ac_srcdir\"" ||
 	{ { echo "$as_me:$LINENO: error: $ac_sub_configure failed for $ac_dir" >&5
 echo "$as_me: error: $ac_sub_configure failed for $ac_dir" >&2;}
    { (exit 1); exit 1; }; }
     fi
 
-    cd $ac_popdir
+    cd "$ac_popdir"
   done
 fi
 
diff --git a/newlib/libc/sys/linux/machine/Makefile.in b/newlib/libc/sys/linux/machine/Makefile.in
index 1fd02c397..761b20c5f 100644
--- a/newlib/libc/sys/linux/machine/Makefile.in
+++ b/newlib/libc/sys/linux/machine/Makefile.in
@@ -46,6 +46,7 @@ DIST_COMMON = $(srcdir)/../../../../../config.guess \
 subdir = .
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/../../../../acinclude.m4 \
+	$(top_srcdir)/../../../../confsubdir.m4 \
 	$(top_srcdir)/../../../../libtool.m4 \
 	$(top_srcdir)/configure.in
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
diff --git a/newlib/libc/sys/linux/machine/aclocal.m4 b/newlib/libc/sys/linux/machine/aclocal.m4
index 37f08bdf4..4e3d2d40d 100644
--- a/newlib/libc/sys/linux/machine/aclocal.m4
+++ b/newlib/libc/sys/linux/machine/aclocal.m4
@@ -878,4 +878,5 @@ AC_SUBST([am__untar])
 ]) # _AM_PROG_TAR
 
 m4_include([../../../../acinclude.m4])
+m4_include([../../../../confsubdir.m4])
 m4_include([../../../../libtool.m4])
diff --git a/newlib/libc/sys/linux/machine/configure b/newlib/libc/sys/linux/machine/configure
index caf0053a8..67e91b11b 100755
--- a/newlib/libc/sys/linux/machine/configure
+++ b/newlib/libc/sys/linux/machine/configure
@@ -6175,14 +6175,17 @@ if test "$no_create" != yes; then
 fi
 
 #
-# CONFIG_SUBDIRS section.
+# CONFIG_SUBDIRS section, as fixed in confsubdir.m4.
 #
 if test "$no_recursion" != yes; then
 
   # Remove --cache-file and --srcdir arguments so they do not pile up.
   ac_sub_configure_args=
   ac_prev=
-  for ac_arg in $ac_configure_args; do
+  eval "set x $ac_configure_args"
+  shift
+  for ac_arg
+  do
     if test -n "$ac_prev"; then
       ac_prev=
       continue
@@ -6205,20 +6208,28 @@ if test "$no_recursion" != yes; then
       ac_prev=prefix ;;
     -prefix=* | --prefix=* | --prefi=* | --pref=* | --pre=* | --pr=* | --p=*)
       ;;
-    *) ac_sub_configure_args="$ac_sub_configure_args $ac_arg" ;;
+    *)
+      case $ac_arg in
+      *\'*) ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+      esac
+      ac_sub_configure_args="$ac_sub_configure_args '$ac_arg'" ;;
     esac
   done
 
   # Always prepend --prefix to ensure using the same prefix
   # in subdir configurations.
-  ac_sub_configure_args="--prefix=$prefix $ac_sub_configure_args"
+  ac_arg="--prefix=$prefix"
+  case $ac_arg in
+  *\'*) ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+  esac
+  ac_sub_configure_args="$ac_arg $ac_sub_configure_args"
 
   ac_popdir=`pwd`
   for ac_dir in : $subdirs; do test "x$ac_dir" = x: && continue
 
     # Do not complain, so a configure script can configure whichever
     # parts of a large source tree are present.
-    test -d $srcdir/$ac_dir || continue
+    test -d "$srcdir/$ac_dir" || continue
 
     { echo "$as_me:$LINENO: configuring in $ac_dir" >&5
 echo "$as_me: configuring in $ac_dir" >&6;}
@@ -6313,15 +6324,16 @@ case $ac_abs_builddir in
 esac
 
 
-    cd $ac_dir
+    cd "$ac_dir"
 
     # Check for guested configure; otherwise get Cygnus style configure.
-    if test -f $ac_srcdir/configure.gnu; then
-      ac_sub_configure="$SHELL '$ac_srcdir/configure.gnu'"
-    elif test -f $ac_srcdir/configure; then
-      ac_sub_configure="$SHELL '$ac_srcdir/configure'"
-    elif test -f $ac_srcdir/configure.in; then
-      ac_sub_configure=$ac_configure
+    if test -f "$ac_srcdir/configure.gnu"; then
+      ac_sub_configure=$ac_srcdir/configure.gnu
+    elif test -f "$ac_srcdir/configure"; then
+      ac_sub_configure=$ac_srcdir/configure
+    elif test -f "$ac_srcdir/configure.in"; then
+      # This should be Cygnus configure.
+      ac_sub_configure=$ac_aux_dir/configure
     else
       { echo "$as_me:$LINENO: WARNING: no configuration information is in $ac_dir" >&5
 echo "$as_me: WARNING: no configuration information is in $ac_dir" >&2;}
@@ -6337,17 +6349,17 @@ echo "$as_me: WARNING: no configuration information is in $ac_dir" >&2;}
 	ac_sub_cache_file=$ac_top_builddir$cache_file ;;
       esac
 
-      { echo "$as_me:$LINENO: running $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&5
-echo "$as_me: running $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&6;}
+      { echo "$as_me:$LINENO: running $SHELL $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&5
+echo "$as_me: running $SHELL $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&6;}
       # The eval makes quoting arguments work.
-      eval $ac_sub_configure $ac_sub_configure_args \
-	   --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir ||
+      eval "\$SHELL \"\$ac_sub_configure\" $ac_sub_configure_args \
+	   --cache-file=\"\$ac_sub_cache_file\" --srcdir=\"\$ac_srcdir\"" ||
 	{ { echo "$as_me:$LINENO: error: $ac_sub_configure failed for $ac_dir" >&5
 echo "$as_me: error: $ac_sub_configure failed for $ac_dir" >&2;}
    { (exit 1); exit 1; }; }
     fi
 
-    cd $ac_popdir
+    cd "$ac_popdir"
   done
 fi
 
diff --git a/newlib/libc/sys/linux/net/Makefile.in b/newlib/libc/sys/linux/net/Makefile.in
index 571ba81ab..3d77bb669 100644
--- a/newlib/libc/sys/linux/net/Makefile.in
+++ b/newlib/libc/sys/linux/net/Makefile.in
@@ -43,6 +43,7 @@ DIST_COMMON = $(srcdir)/../../../../Makefile.shared \
 subdir = net
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/../../../acinclude.m4 \
+	$(top_srcdir)/../../../confsubdir.m4 \
 	$(top_srcdir)/../../../libtool.m4 $(top_srcdir)/configure.in
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
diff --git a/newlib/libc/sys/linux/stdlib/Makefile.in b/newlib/libc/sys/linux/stdlib/Makefile.in
index d63080e15..99de1dba2 100644
--- a/newlib/libc/sys/linux/stdlib/Makefile.in
+++ b/newlib/libc/sys/linux/stdlib/Makefile.in
@@ -43,6 +43,7 @@ DIST_COMMON = $(srcdir)/../../../../Makefile.shared \
 subdir = stdlib
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/../../../acinclude.m4 \
+	$(top_srcdir)/../../../confsubdir.m4 \
 	$(top_srcdir)/../../../libtool.m4 $(top_srcdir)/configure.in
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
diff --git a/newlib/libc/syscalls/Makefile.in b/newlib/libc/syscalls/Makefile.in
index 08f253d79..4071976a3 100644
--- a/newlib/libc/syscalls/Makefile.in
+++ b/newlib/libc/syscalls/Makefile.in
@@ -43,7 +43,8 @@ DIST_COMMON = $(srcdir)/../../Makefile.shared $(srcdir)/Makefile.in \
 subdir = syscalls
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/../acinclude.m4 \
-	$(top_srcdir)/../libtool.m4 $(top_srcdir)/configure.in
+	$(top_srcdir)/../confsubdir.m4 $(top_srcdir)/../libtool.m4 \
+	$(top_srcdir)/configure.in
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(SHELL) $(top_srcdir)/../../mkinstalldirs
diff --git a/newlib/libc/time/Makefile.in b/newlib/libc/time/Makefile.in
index 16234f4ee..65acb93e3 100644
--- a/newlib/libc/time/Makefile.in
+++ b/newlib/libc/time/Makefile.in
@@ -43,7 +43,8 @@ DIST_COMMON = $(srcdir)/../../Makefile.shared $(srcdir)/Makefile.in \
 subdir = time
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/../acinclude.m4 \
-	$(top_srcdir)/../libtool.m4 $(top_srcdir)/configure.in
+	$(top_srcdir)/../confsubdir.m4 $(top_srcdir)/../libtool.m4 \
+	$(top_srcdir)/configure.in
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(SHELL) $(top_srcdir)/../../mkinstalldirs
diff --git a/newlib/libc/unix/Makefile.in b/newlib/libc/unix/Makefile.in
index e6f4ef167..c42f78f43 100644
--- a/newlib/libc/unix/Makefile.in
+++ b/newlib/libc/unix/Makefile.in
@@ -43,7 +43,8 @@ DIST_COMMON = $(srcdir)/../../Makefile.shared $(srcdir)/Makefile.in \
 subdir = unix
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/../acinclude.m4 \
-	$(top_srcdir)/../libtool.m4 $(top_srcdir)/configure.in
+	$(top_srcdir)/../confsubdir.m4 $(top_srcdir)/../libtool.m4 \
+	$(top_srcdir)/configure.in
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(SHELL) $(top_srcdir)/../../mkinstalldirs
diff --git a/newlib/libm/Makefile.in b/newlib/libm/Makefile.in
index 0fd2522de..84e01dc48 100644
--- a/newlib/libm/Makefile.in
+++ b/newlib/libm/Makefile.in
@@ -46,7 +46,8 @@ DIST_COMMON = $(srcdir)/../../config.guess $(srcdir)/../../config.sub \
 subdir = .
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/../acinclude.m4 \
-	$(top_srcdir)/../libtool.m4 $(top_srcdir)/configure.in
+	$(top_srcdir)/../confsubdir.m4 $(top_srcdir)/../libtool.m4 \
+	$(top_srcdir)/configure.in
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 am__CONFIG_DISTCLEAN_FILES = config.status config.cache config.log \
diff --git a/newlib/libm/aclocal.m4 b/newlib/libm/aclocal.m4
index ac69199fa..c89658a30 100644
--- a/newlib/libm/aclocal.m4
+++ b/newlib/libm/aclocal.m4
@@ -878,4 +878,5 @@ AC_SUBST([am__untar])
 ]) # _AM_PROG_TAR
 
 m4_include([../acinclude.m4])
+m4_include([../confsubdir.m4])
 m4_include([../libtool.m4])
diff --git a/newlib/libm/common/Makefile.in b/newlib/libm/common/Makefile.in
index af1a70b2d..2c717042b 100644
--- a/newlib/libm/common/Makefile.in
+++ b/newlib/libm/common/Makefile.in
@@ -43,7 +43,8 @@ DIST_COMMON = $(srcdir)/../../Makefile.shared $(srcdir)/Makefile.in \
 subdir = common
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/../acinclude.m4 \
-	$(top_srcdir)/../libtool.m4 $(top_srcdir)/configure.in
+	$(top_srcdir)/../confsubdir.m4 $(top_srcdir)/../libtool.m4 \
+	$(top_srcdir)/configure.in
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(SHELL) $(top_srcdir)/../../mkinstalldirs
diff --git a/newlib/libm/configure b/newlib/libm/configure
index 180a54191..74b7126b0 100755
--- a/newlib/libm/configure
+++ b/newlib/libm/configure
@@ -6194,14 +6194,17 @@ if test "$no_create" != yes; then
 fi
 
 #
-# CONFIG_SUBDIRS section.
+# CONFIG_SUBDIRS section, as fixed in confsubdir.m4.
 #
 if test "$no_recursion" != yes; then
 
   # Remove --cache-file and --srcdir arguments so they do not pile up.
   ac_sub_configure_args=
   ac_prev=
-  for ac_arg in $ac_configure_args; do
+  eval "set x $ac_configure_args"
+  shift
+  for ac_arg
+  do
     if test -n "$ac_prev"; then
       ac_prev=
       continue
@@ -6224,20 +6227,28 @@ if test "$no_recursion" != yes; then
       ac_prev=prefix ;;
     -prefix=* | --prefix=* | --prefi=* | --pref=* | --pre=* | --pr=* | --p=*)
       ;;
-    *) ac_sub_configure_args="$ac_sub_configure_args $ac_arg" ;;
+    *)
+      case $ac_arg in
+      *\'*) ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+      esac
+      ac_sub_configure_args="$ac_sub_configure_args '$ac_arg'" ;;
     esac
   done
 
   # Always prepend --prefix to ensure using the same prefix
   # in subdir configurations.
-  ac_sub_configure_args="--prefix=$prefix $ac_sub_configure_args"
+  ac_arg="--prefix=$prefix"
+  case $ac_arg in
+  *\'*) ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+  esac
+  ac_sub_configure_args="$ac_arg $ac_sub_configure_args"
 
   ac_popdir=`pwd`
   for ac_dir in : $subdirs; do test "x$ac_dir" = x: && continue
 
     # Do not complain, so a configure script can configure whichever
     # parts of a large source tree are present.
-    test -d $srcdir/$ac_dir || continue
+    test -d "$srcdir/$ac_dir" || continue
 
     { echo "$as_me:$LINENO: configuring in $ac_dir" >&5
 echo "$as_me: configuring in $ac_dir" >&6;}
@@ -6332,15 +6343,16 @@ case $ac_abs_builddir in
 esac
 
 
-    cd $ac_dir
+    cd "$ac_dir"
 
     # Check for guested configure; otherwise get Cygnus style configure.
-    if test -f $ac_srcdir/configure.gnu; then
-      ac_sub_configure="$SHELL '$ac_srcdir/configure.gnu'"
-    elif test -f $ac_srcdir/configure; then
-      ac_sub_configure="$SHELL '$ac_srcdir/configure'"
-    elif test -f $ac_srcdir/configure.in; then
-      ac_sub_configure=$ac_configure
+    if test -f "$ac_srcdir/configure.gnu"; then
+      ac_sub_configure=$ac_srcdir/configure.gnu
+    elif test -f "$ac_srcdir/configure"; then
+      ac_sub_configure=$ac_srcdir/configure
+    elif test -f "$ac_srcdir/configure.in"; then
+      # This should be Cygnus configure.
+      ac_sub_configure=$ac_aux_dir/configure
     else
       { echo "$as_me:$LINENO: WARNING: no configuration information is in $ac_dir" >&5
 echo "$as_me: WARNING: no configuration information is in $ac_dir" >&2;}
@@ -6356,17 +6368,17 @@ echo "$as_me: WARNING: no configuration information is in $ac_dir" >&2;}
 	ac_sub_cache_file=$ac_top_builddir$cache_file ;;
       esac
 
-      { echo "$as_me:$LINENO: running $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&5
-echo "$as_me: running $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&6;}
+      { echo "$as_me:$LINENO: running $SHELL $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&5
+echo "$as_me: running $SHELL $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&6;}
       # The eval makes quoting arguments work.
-      eval $ac_sub_configure $ac_sub_configure_args \
-	   --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir ||
+      eval "\$SHELL \"\$ac_sub_configure\" $ac_sub_configure_args \
+	   --cache-file=\"\$ac_sub_cache_file\" --srcdir=\"\$ac_srcdir\"" ||
 	{ { echo "$as_me:$LINENO: error: $ac_sub_configure failed for $ac_dir" >&5
 echo "$as_me: error: $ac_sub_configure failed for $ac_dir" >&2;}
    { (exit 1); exit 1; }; }
     fi
 
-    cd $ac_popdir
+    cd "$ac_popdir"
   done
 fi
 
diff --git a/newlib/libm/machine/Makefile.in b/newlib/libm/machine/Makefile.in
index fd0a7aa91..444e9ad8a 100644
--- a/newlib/libm/machine/Makefile.in
+++ b/newlib/libm/machine/Makefile.in
@@ -45,6 +45,7 @@ DIST_COMMON = $(srcdir)/../../../config.guess \
 subdir = .
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/../../acinclude.m4 \
+	$(top_srcdir)/../../confsubdir.m4 \
 	$(top_srcdir)/../../libtool.m4 $(top_srcdir)/configure.in
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
diff --git a/newlib/libm/machine/aclocal.m4 b/newlib/libm/machine/aclocal.m4
index a8a66b57f..2c75c5405 100644
--- a/newlib/libm/machine/aclocal.m4
+++ b/newlib/libm/machine/aclocal.m4
@@ -878,4 +878,5 @@ AC_SUBST([am__untar])
 ]) # _AM_PROG_TAR
 
 m4_include([../../acinclude.m4])
+m4_include([../../confsubdir.m4])
 m4_include([../../libtool.m4])
diff --git a/newlib/libm/machine/configure b/newlib/libm/machine/configure
index b74efc59f..3ddc50808 100755
--- a/newlib/libm/machine/configure
+++ b/newlib/libm/machine/configure
@@ -6184,14 +6184,17 @@ if test "$no_create" != yes; then
 fi
 
 #
-# CONFIG_SUBDIRS section.
+# CONFIG_SUBDIRS section, as fixed in confsubdir.m4.
 #
 if test "$no_recursion" != yes; then
 
   # Remove --cache-file and --srcdir arguments so they do not pile up.
   ac_sub_configure_args=
   ac_prev=
-  for ac_arg in $ac_configure_args; do
+  eval "set x $ac_configure_args"
+  shift
+  for ac_arg
+  do
     if test -n "$ac_prev"; then
       ac_prev=
       continue
@@ -6214,20 +6217,28 @@ if test "$no_recursion" != yes; then
       ac_prev=prefix ;;
     -prefix=* | --prefix=* | --prefi=* | --pref=* | --pre=* | --pr=* | --p=*)
       ;;
-    *) ac_sub_configure_args="$ac_sub_configure_args $ac_arg" ;;
+    *)
+      case $ac_arg in
+      *\'*) ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+      esac
+      ac_sub_configure_args="$ac_sub_configure_args '$ac_arg'" ;;
     esac
   done
 
   # Always prepend --prefix to ensure using the same prefix
   # in subdir configurations.
-  ac_sub_configure_args="--prefix=$prefix $ac_sub_configure_args"
+  ac_arg="--prefix=$prefix"
+  case $ac_arg in
+  *\'*) ac_arg=`echo "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;
+  esac
+  ac_sub_configure_args="$ac_arg $ac_sub_configure_args"
 
   ac_popdir=`pwd`
   for ac_dir in : $subdirs; do test "x$ac_dir" = x: && continue
 
     # Do not complain, so a configure script can configure whichever
     # parts of a large source tree are present.
-    test -d $srcdir/$ac_dir || continue
+    test -d "$srcdir/$ac_dir" || continue
 
     { echo "$as_me:$LINENO: configuring in $ac_dir" >&5
 echo "$as_me: configuring in $ac_dir" >&6;}
@@ -6322,15 +6333,16 @@ case $ac_abs_builddir in
 esac
 
 
-    cd $ac_dir
+    cd "$ac_dir"
 
     # Check for guested configure; otherwise get Cygnus style configure.
-    if test -f $ac_srcdir/configure.gnu; then
-      ac_sub_configure="$SHELL '$ac_srcdir/configure.gnu'"
-    elif test -f $ac_srcdir/configure; then
-      ac_sub_configure="$SHELL '$ac_srcdir/configure'"
-    elif test -f $ac_srcdir/configure.in; then
-      ac_sub_configure=$ac_configure
+    if test -f "$ac_srcdir/configure.gnu"; then
+      ac_sub_configure=$ac_srcdir/configure.gnu
+    elif test -f "$ac_srcdir/configure"; then
+      ac_sub_configure=$ac_srcdir/configure
+    elif test -f "$ac_srcdir/configure.in"; then
+      # This should be Cygnus configure.
+      ac_sub_configure=$ac_aux_dir/configure
     else
       { echo "$as_me:$LINENO: WARNING: no configuration information is in $ac_dir" >&5
 echo "$as_me: WARNING: no configuration information is in $ac_dir" >&2;}
@@ -6346,17 +6358,17 @@ echo "$as_me: WARNING: no configuration information is in $ac_dir" >&2;}
 	ac_sub_cache_file=$ac_top_builddir$cache_file ;;
       esac
 
-      { echo "$as_me:$LINENO: running $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&5
-echo "$as_me: running $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&6;}
+      { echo "$as_me:$LINENO: running $SHELL $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&5
+echo "$as_me: running $SHELL $ac_sub_configure $ac_sub_configure_args --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir" >&6;}
       # The eval makes quoting arguments work.
-      eval $ac_sub_configure $ac_sub_configure_args \
-	   --cache-file=$ac_sub_cache_file --srcdir=$ac_srcdir ||
+      eval "\$SHELL \"\$ac_sub_configure\" $ac_sub_configure_args \
+	   --cache-file=\"\$ac_sub_cache_file\" --srcdir=\"\$ac_srcdir\"" ||
 	{ { echo "$as_me:$LINENO: error: $ac_sub_configure failed for $ac_dir" >&5
 echo "$as_me: error: $ac_sub_configure failed for $ac_dir" >&2;}
    { (exit 1); exit 1; }; }
     fi
 
-    cd $ac_popdir
+    cd "$ac_popdir"
   done
 fi
 
diff --git a/newlib/libm/math/Makefile.in b/newlib/libm/math/Makefile.in
index 504667a32..cba8521e6 100644
--- a/newlib/libm/math/Makefile.in
+++ b/newlib/libm/math/Makefile.in
@@ -43,7 +43,8 @@ DIST_COMMON = $(srcdir)/../../Makefile.shared $(srcdir)/Makefile.in \
 subdir = math
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/../acinclude.m4 \
-	$(top_srcdir)/../libtool.m4 $(top_srcdir)/configure.in
+	$(top_srcdir)/../confsubdir.m4 $(top_srcdir)/../libtool.m4 \
+	$(top_srcdir)/configure.in
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(SHELL) $(top_srcdir)/../../mkinstalldirs
diff --git a/newlib/libm/mathfp/Makefile.in b/newlib/libm/mathfp/Makefile.in
index f20255b25..0078e8a0b 100644
--- a/newlib/libm/mathfp/Makefile.in
+++ b/newlib/libm/mathfp/Makefile.in
@@ -43,7 +43,8 @@ DIST_COMMON = $(srcdir)/../../Makefile.shared $(srcdir)/Makefile.in \
 subdir = mathfp
 ACLOCAL_M4 = $(top_srcdir)/aclocal.m4
 am__aclocal_m4_deps = $(top_srcdir)/../acinclude.m4 \
-	$(top_srcdir)/../libtool.m4 $(top_srcdir)/configure.in
+	$(top_srcdir)/../confsubdir.m4 $(top_srcdir)/../libtool.m4 \
+	$(top_srcdir)/configure.in
 am__configure_deps = $(am__aclocal_m4_deps) $(CONFIGURE_DEPENDENCIES) \
 	$(ACLOCAL_M4)
 mkinstalldirs = $(SHELL) $(top_srcdir)/../../mkinstalldirs