Update.

1998-04-08  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* configure.in: Add new option --enable-force-install.  Substitute
	force_install.
	* config.make.in (force-install): Set from configure.
	* Makerules (force-install): New phony target.
	* Makeconfig (+force): New variable.
	* Makefile: Use it in dependency list of installation targets.
	* db/Makefile: Likewise.
	* db2/Makefile: Likewise.
	* elf/Makefile: Likewise.
	* hurd/Makefile: Likewise.
	* iconv/Makefile: Likewise.
	* iconvdata/Makefile: Likewise.
	* intl/Makefile: Likewise.
	* localedata/Makefile: Likewise.
	* login/Makefile: Likewise.
	* po/Makefile: Likewise.
	* sunrpc/Makefile: Likewise.
	* sysdeps/mach/hurd/Makefile: Likewise.
	* sysdeps/standalone/i386/force_cpu386/Makefile: Likewise.
	* sysdeps/unix/sysv/linux/Makefile: Likewise.
	* timezone/Makefile: Likewise.

1998-04-08  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* sysdeps/unix/sysv/linux/getcwd.c: Use PATH_MAX as default
	alloc_size.  Pass return value of getcwd syscall to realloc.

1998-04-08  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* manual/socket.texi: Spelling fixes.

1998-04-08  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>

	* elf/dl-load.c (print_search_path): Remove unused variable.

25 files changed, 243 insertions, 135 deletions

diff --git a/ChangeLog b/ChangeLog
index 7c43ac6bf0..fad9d3dd7e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,40 @@
+1998-04-08  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>
+
+	* configure.in: Add new option --enable-force-install.  Substitute
+	force_install.
+	* config.make.in (force-install): Set from configure.
+	* Makerules (force-install): New phony target.
+	* Makeconfig (+force): New variable.
+	* Makefile: Use it in dependency list of installation targets.
+	* db/Makefile: Likewise.
+	* db2/Makefile: Likewise.
+	* elf/Makefile: Likewise.
+	* hurd/Makefile: Likewise.
+	* iconv/Makefile: Likewise.
+	* iconvdata/Makefile: Likewise.
+	* intl/Makefile: Likewise.
+	* localedata/Makefile: Likewise.
+	* login/Makefile: Likewise.
+	* po/Makefile: Likewise.
+	* sunrpc/Makefile: Likewise.
+	* sysdeps/mach/hurd/Makefile: Likewise.
+	* sysdeps/standalone/i386/force_cpu386/Makefile: Likewise.
+	* sysdeps/unix/sysv/linux/Makefile: Likewise.
+	* timezone/Makefile: Likewise.
+
+1998-04-08  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>
+
+	* sysdeps/unix/sysv/linux/getcwd.c: Use PATH_MAX as default
+	alloc_size.  Pass return value of getcwd syscall to realloc.
+
+1998-04-08  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>
+
+	* manual/socket.texi: Spelling fixes.
+
+1998-04-08  Andreas Schwab  <schwab@issan.informatik.uni-dortmund.de>
+
+	* elf/dl-load.c (print_search_path): Remove unused variable.
+
 1998-04-08  Ulrich Drepper  <drepper@cygnus.com>
 
 	* login/utmp_file.c: use __ftruncate not ftruncate.
diff --git a/FAQ.in b/FAQ.in
index aee939dde5..adda0fb06a 100644
--- a/FAQ.in
+++ b/FAQ.in
@@ -945,6 +945,31 @@ Also, make sure you have a suitably recent kernel.  As of the 970401
 snapshot, according to Philip Blundell <Philip.Blundell@pobox.com>, the
 required kernel version is at least 2.1.30.
 
+??	When I set the timezone I'm by setting the TZ environment variable
+	to EST5EDT things go wrong since glibc computes the wrong time
+	from this information.
+
+{UD} The problem is that people still use the braindamaged POSIX
+method to select the timezone using the TZ environment variable with a
+format EST5EDT or whatever.  People, read the POSIX standard, the
+implemented behaviour is correct!  What you see is in fact the result
+of the decisions made while POSIX.1 was created.  We've only
+implemented the handling of TZ this way to be POSIX compliant.  It is
+not really meant to be used.
+
+The alternative approach to handle timezones which is implemented is
+the correct one to use: use the timezone database.  This avoids all
+the problems the POSIX method has plus it is much easier to use.
+Simply run the tzselect shell script, answer the question and use the
+name printed in the end by making a symlink to
+/usr/share/zoneinfo/NAME (NAME is the returned value from tzselect)
+from the file /etc/localtime.  That's all.  You never again have to
+worry.
+
+So, please avoid sending bug reports about time related problems if
+you use the POSIX method and you have not verified something is really
+broken by reading the POSIX standards.
+
 
 Answers were given by:
 {UD} Ulrich Drepper, <drepper@cygnus.com>
diff --git a/Makeconfig b/Makeconfig
index e2514d234c..b5f5c03cf6 100644
--- a/Makeconfig
+++ b/Makeconfig
@@ -497,6 +497,15 @@ ETAGS	:= etags -T
 # perhaps others) to preprocess assembly code in some cases.
 M4 = m4
 
+# To force installation of files even if they are older than the
+# installed files.  This variable is included in the dependency list
+# of all installation targets.
+ifeq ($(force-install),yes)
++force = force-install
+else
++force =
+endif
+
 ####
 #### End of configuration variables.
 ####
diff --git a/Makefile b/Makefile
index 83b167846a..7d9e98fed5 100644
--- a/Makefile
+++ b/Makefile
@@ -222,7 +222,7 @@ $(inst_includedir)/gnu/stubs.h: subdir_install
 
 ifeq (yes,$(build-shared))
 
-$(inst_includedir)/gnu/lib-names.h: $(common-objpfx)gnu/lib-names.h
+$(inst_includedir)/gnu/lib-names.h: $(common-objpfx)gnu/lib-names.h $(+force)
 	$(make-target-directory)
 	if test -r $@ && cmp -s $< $@; \
 	then echo 'gnu/lib-names.h unchanged'; \
diff --git a/Makerules b/Makerules
index 9d0a9faa58..0d04b50084 100644
--- a/Makerules
+++ b/Makerules
@@ -625,6 +625,9 @@ endef
 
 # Installation.
 
+.PHONY: force-install
+force-install:
+
 # $(install-lib) are installed from the object directory into $(libdir);
 # files in $(install-lib) matching `lib%.a' are ranlib'd after installation
 # unless they also appear in $(non-lib.a).  $(install-data) are installed
@@ -660,7 +663,7 @@ installed-libcs := $(foreach o,$(filter-out .os,$(object-suffixes-for-libc)),\
 			     $(inst_libdir)/$(patsubst %,$(libtype$o),\
 						     $(libprefix)$(libc-name)))
 install: $(installed-libcs)
-$(installed-libcs): $(inst_libdir)/lib$(libprefix)%: lib
+$(installed-libcs): $(inst_libdir)/lib$(libprefix)%: lib $(+force)
 	$(make-target-directory)
 	$(INSTALL_DATA) $(common-objpfx)lib$(*:$(libc-name)%=c%) $@
 # Running ranlib after installing makes the __.SYMDEF time stamp up to
@@ -686,7 +689,7 @@ versioned := $(strip $(foreach so,$(install-lib.so),\
 
 # Install all the unversioned shared libraries.
 $(addprefix $(inst_slibdir)/, $(filter-out $(versioned),$(install-lib.so))): \
-	$(inst_slibdir)/%.so: $(objpfx)%.so; $(do-install-program)
+	$(inst_slibdir)/%.so: $(objpfx)%.so $(+force); $(do-install-program)
 
 ifneq ($(findstring -s,$(LN_S)),)
 define make-link
@@ -722,9 +725,10 @@ ifdef libc.so-version
 # libc.so	->	libc.so.N	(e.g. libc.so.6)
 # libc.so.6	->	libc-VERSION.so	(e.g. libc-1.10.so)
 
-$(inst_slibdir)/libc.so$(libc.so-version): $(inst_slibdir)/libc-$(version).so
+$(inst_slibdir)/libc.so$(libc.so-version): $(inst_slibdir)/libc-$(version).so \
+					   $(+force)
 	$(make-shlib-link)
-$(inst_slibdir)/libc-$(version).so: $(common-objpfx)libc.so
+$(inst_slibdir)/libc-$(version).so: $(common-objpfx)libc.so $(+force)
 	$(do-install-program)
 install: $(inst_slibdir)/libc.so$(libc.so-version)
 
@@ -736,7 +740,8 @@ ifndef subdir
 install: $(inst_libdir)/libc.so
 $(inst_libdir)/libc.so: $(common-objpfx)libc.so$(libc.so-version) \
 			$(inst_libdir)/$(patsubst %,$(libtype.oS),\
-						  $(libprefix)$(libc-name))
+						  $(libprefix)$(libc-name)) \
+			$(+force)
 	(echo '/* GNU ld script';\
 	 echo '   Use the shared library, but some functions are only in';\
 	 echo '   the static library, so try that secondarily.  */';\
@@ -750,7 +755,7 @@ endif
 
 else
 install: $(inst_slibdir)/libc.so
-$(inst_slibdir)/libc.so: $(common-objpfx)libc.so
+$(inst_slibdir)/libc.so: $(common-objpfx)libc.so $(+force)
 	$(do-install-program)
 endif
 
@@ -758,7 +763,7 @@ ifneq (,$(versioned))
 # Produce three sets of rules as above for all the smaller versioned libraries.
 
 define o-iterator-doit
-$(inst_libdir)/$o: $(inst_slibdir)/$o$($o-version); $$(make-link)
+$(inst_libdir)/$o: $(inst_slibdir)/$o$($o-version) $(+force); $$(make-link)
 endef
 object-suffixes-left := $(versioned)
 include $(o-iterator)
@@ -775,28 +780,30 @@ generated += $(foreach o,$(versioned),$o$($o-version))
 
 ifeq (,$($(subdir)-version))
 define o-iterator-doit
-$(inst_slibdir)/$o$($o-version): $(inst_slibdir)/$(o:.so=)-$(version).so;
+$(inst_slibdir)/$o$($o-version): $(inst_slibdir)/$(o:.so=)-$(version).so \
+				 $(+force);
 	$$(make-shlib-link)
 endef
 object-suffixes-left := $(versioned)
 include $(o-iterator)
 
 define o-iterator-doit
-$(inst_slibdir)/$(o:.so=)-$(version).so: $(objpfx)$o; $$(do-install-program)
+$(inst_slibdir)/$(o:.so=)-$(version).so: $(objpfx)$o $(+force);
+	$$(do-install-program)
 endef
 object-suffixes-left := $(versioned)
 include $(o-iterator)
 else
 define o-iterator-doit
 $(inst_slibdir)/$o$($o-version): \
-  $(inst_slibdir)/$(o:.so=)-$($(subdir)-version).so;
+  $(inst_slibdir)/$(o:.so=)-$($(subdir)-version).so $(+force);
 	$$(make-shlib-link)
 endef
 object-suffixes-left := $(versioned)
 include $(o-iterator)
 
 define o-iterator-doit
-$(inst_slibdir)/$(o:.so=)-$($(subdir)-version).so: $(objpfx)$o;
+$(inst_slibdir)/$(o:.so=)-$($(subdir)-version).so: $(objpfx)$o $(+force);
 	$$(do-install-program)
 endef
 object-suffixes-left := $(versioned)
@@ -812,24 +819,27 @@ endef
 
 so-versions := $(sort $(foreach so,$(install-lib.so),.so$($(so)-version)))
 $(foreach v,$(so-versions),\
-	  $(inst_slibdir)/lib$(libprefix)%$v): $(common-objpfx)lib%.so
+	  $(inst_slibdir)/lib$(libprefix)%$v): $(common-objpfx)lib%.so \
+					       $(+force)
 	$(do-install-so)
 $(foreach v,$(so-versions),\
-	  $(inst_slibdir)/$(libprefix)%$v): $(common-objpfx)%.so
+	  $(inst_slibdir)/$(libprefix)%$v): $(common-objpfx)%.so $(+force)
 	$(do-install-so)
 endif
 
 ifdef install-bin
-$(addprefix $(inst_bindir)/,$(install-bin)): $(inst_bindir)/%: $(objpfx)%
+$(addprefix $(inst_bindir)/,$(install-bin)): \
+    $(inst_bindir)/%: $(objpfx)% $(+force)
 	$(do-install-program)
 endif
 ifdef install-rootsbin
-$(addprefix $(inst_rootsbindir)/,$(install-rootsbin)):
-   $(inst_rootsbindir)/%: $(objpfx)%
+$(addprefix $(inst_rootsbindir)/,$(install-rootsbin)): \
+   $(inst_rootsbindir)/%: $(objpfx)% $(+force)
 	$(do-install-program)
 endif
 ifdef install-sbin
-$(addprefix $(inst_sbindir)/,$(install-sbin)): $(inst_sbindir)/%: $(objpfx)%
+$(addprefix $(inst_sbindir)/,$(install-sbin)): \
+    $(inst_sbindir)/%: $(objpfx)% $(+force)
 	$(do-install-program)
 endif
 ifdef install-lib
@@ -837,23 +847,23 @@ install-lib.a := $(filter lib%.a,$(install-lib))
 install-lib-non.a := $(filter-out lib%.a,$(install-lib))
 ifdef install-lib-non.a
 $(addprefix $(inst_libdir)/$(libprefix),$(install-lib-non.a)): \
-  $(inst_libdir)/$(libprefix)%: $(objpfx)%
+  $(inst_libdir)/$(libprefix)%: $(objpfx)% $(+force)
 	$(do-install)
 endif
 ifdef install-lib.a
 $(install-lib.a:lib%.a=$(inst_libdir)/lib$(libprefix)%.a): \
-  $(inst_libdir)/lib$(libprefix)%.a: $(objpfx)lib%.a
+  $(inst_libdir)/lib$(libprefix)%.a: $(objpfx)lib%.a $(+force)
 	$(do-install)
 	$(patsubst %,$(RANLIB) $@,$(filter-out $(non-lib.a),$(<F)))
 endif
 endif
 ifdef install-data
-$(addprefix $(inst_datadir)/,$(install-data)): $(inst_datadir)/%: %;
+$(addprefix $(inst_datadir)/,$(install-data)): $(inst_datadir)/%: % $(+force)
 	$(do-install)
 endif
 headers := $(strip $(headers))
 ifdef headers
-$(addprefix $(inst_includedir)/,$(headers)): $(inst_includedir)/%: %;
+$(addprefix $(inst_includedir)/,$(headers)): $(inst_includedir)/%: % $(+force)
 	$(do-install)
 endif	# headers
 
diff --git a/config.make.in b/config.make.in
index 6fc1c95dfd..0a2c873e7a 100644
--- a/config.make.in
+++ b/config.make.in
@@ -54,6 +54,7 @@ build-static-nss = @static_nss@
 stdio = @stdio@
 add-ons = @subdirs@
 cross-compiling = @cross_compiling@
+force-install = @force_install@
 
 LDAP = @LDAP@
 
diff --git a/configure b/configure
index 14b0df1bc5..e94d8cdd0b 100755
--- a/configure
+++ b/configure
@@ -57,10 +57,14 @@ ac_help="$ac_help
   --disable-versioning    do not include versioning information in the
                           library objects [default=yes if supported]"
 ac_help="$ac_help
-  --enable-add-ons[=DIR1,DIR2]... configure and build add-ons in DIR1,DIR2,...
-                                  search for add-ons if no parameter given"
+  --enable-add-ons[=DIR1,DIR2]...
+			  configure and build add-ons in DIR1,DIR2,...
+                          search for add-ons if no parameter given"
 ac_help="$ac_help
   --enable-static-nss     build static NSS modules [default=no]"
+ac_help="$ac_help
+  --enable-force-install  force installation of files from this package,
+			  even if they are older than the installed files"
 
 # Initialize some variables set by options.
 # The variables have the same names as the options, with
@@ -789,6 +793,16 @@ EOF
 
 fi
 
+# Check whether --enable-force-install or --disable-force-install was given.
+if test "${enable_force_install+set}" = set; then
+  enableval="$enable_force_install"
+  force_install=$enableval
+else
+  force_install=yes
+fi
+
+
+
 
 # Make sure we can run config.sub.
 if $ac_config_sub sun4 >/dev/null 2>&1; then :
@@ -796,7 +810,7 @@ else { echo "configure: error: can not run $ac_config_sub" 1>&2; exit 1; }
 fi
 
 echo $ac_n "checking host system type""... $ac_c" 1>&6
-echo "configure:800: checking host system type" >&5
+echo "configure:814: checking host system type" >&5
 
 host_alias=$host
 case "$host_alias" in
@@ -919,7 +933,7 @@ fi
 # This can take a while to compute.
 sysdep_dir=$srcdir/sysdeps
 echo $ac_n "checking sysdep dirs""... $ac_c" 1>&6
-echo "configure:923: checking sysdep dirs" >&5
+echo "configure:937: checking sysdep dirs" >&5
 # Make sco3.2v4 become sco3.2.4 and sunos4.1.1_U1 become sunos4.1.1.U1.
 os="`echo $os | sed 's/\([0-9A-Z]\)[v_]\([0-9A-Z]\)/\1.\2/g'`"
 
@@ -1124,7 +1138,7 @@ echo "$ac_t""sysdeps/generic" 1>&6
 # SVR4 /usr/ucb/install, which tries to use the nonexistent group "staff"
 # ./install, which can be erroneously created by make from ./install.sh.
 echo $ac_n "checking for a BSD compatible install""... $ac_c" 1>&6
-echo "configure:1128: checking for a BSD compatible install" >&5
+echo "configure:1142: checking for a BSD compatible install" >&5
 if test -z "$INSTALL"; then
 if eval "test \"`echo '$''{'ac_cv_path_install'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -1178,7 +1192,7 @@ if test "$INSTALL" = "${srcdir}/install-sh -c"; then
   INSTALL='\$(..)./install-sh -c'
 fi
 echo $ac_n "checking whether ln -s works""... $ac_c" 1>&6
-echo "configure:1182: checking whether ln -s works" >&5
+echo "configure:1196: checking whether ln -s works" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_LN_S'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1201,7 +1215,7 @@ fi
 
 # These programs are version sensitive.
 echo $ac_n "checking build system type""... $ac_c" 1>&6
-echo "configure:1205: checking build system type" >&5
+echo "configure:1219: checking build system type" >&5
 
 build_alias=$build
 case "$build_alias" in
@@ -1229,7 +1243,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1233: checking for $ac_word" >&5
+echo "configure:1247: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1262,7 +1276,7 @@ if test -z "$CC"; then
 else
   # Found it, now check the version.
   echo $ac_n "checking version of $CC""... $ac_c" 1>&6
-echo "configure:1266: checking version of $CC" >&5
+echo "configure:1280: checking version of $CC" >&5
   ac_prog_version=`$CC -v 2>&1 | sed -n 's/^.*version \([egcst0-9.-]*\).*$/\1/p'`
   case $ac_prog_version in
     '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
@@ -1282,7 +1296,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1286: checking for $ac_word" >&5
+echo "configure:1300: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_MAKE'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1315,7 +1329,7 @@ if test -z "$MAKE"; then
 else
   # Found it, now check the version.
   echo $ac_n "checking version of $MAKE""... $ac_c" 1>&6
-echo "configure:1319: checking version of $MAKE" >&5
+echo "configure:1333: checking version of $MAKE" >&5
   ac_prog_version=`$MAKE --version 2>&1 | sed -n 's/^.*version \([0-9][0-9.]*\), by.*$/\1/p'`
   case $ac_prog_version in
     '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
@@ -1336,7 +1350,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1340: checking for $ac_word" >&5
+echo "configure:1354: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_MSGFMT'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1369,7 +1383,7 @@ if test -z "$MSGFMT"; then
 else
   # Found it, now check the version.
   echo $ac_n "checking version of $MSGFMT""... $ac_c" 1>&6
-echo "configure:1373: checking version of $MSGFMT" >&5
+echo "configure:1387: checking version of $MSGFMT" >&5
   ac_prog_version=`$MSGFMT --version 2>&1 | sed -n 's/^.*GNU gettext.*\([0-9][0-9]*\.[0-9]*\).*$/\1/p'`
   case $ac_prog_version in
     '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
@@ -1389,7 +1403,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1393: checking for $ac_word" >&5
+echo "configure:1407: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_MAKEINFO'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1422,7 +1436,7 @@ if test -z "$MAKEINFO"; then
 else
   # Found it, now check the version.
   echo $ac_n "checking version of $MAKEINFO""... $ac_c" 1>&6
-echo "configure:1426: checking version of $MAKEINFO" >&5
+echo "configure:1440: checking version of $MAKEINFO" >&5
   ac_prog_version=`$MAKEINFO --version 2>&1 | sed -n 's/^.*GNU texinfo \([0-9][0-9.]*\).*$/\1/p'`
   case $ac_prog_version in
     '') ac_prog_version="v. ?.??, bad"; ac_verc_fail=yes;;
@@ -1451,7 +1465,7 @@ test -n "$aux_missing" && echo "configure: warning:
 
 
 echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works""... $ac_c" 1>&6
-echo "configure:1455: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5
+echo "configure:1469: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_cc_works'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1464,11 +1478,11 @@ ac_link='${CC-cc} -o conftest $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS
 cross_compiling=$ac_cv_prog_cc_cross
 
 cat > conftest.$ac_ext <<EOF
-#line 1468 "configure"
+#line 1482 "configure"
 #include "confdefs.h"
 main(){return(0);}
 EOF
-if { (eval echo configure:1472: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+if { (eval echo configure:1486: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
   ac_cv_prog_cc_works=yes
   # If we can't run a trivial program, we are probably using a cross compiler.
   if (./conftest; exit) 2>/dev/null; then
@@ -1493,7 +1507,7 @@ else
  cross_linkable=yes
 fi
 echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler""... $ac_c" 1>&6
-echo "configure:1497: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler" >&5
+echo "configure:1511: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_cc_cross'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1505,7 +1519,7 @@ echo "$ac_t""$ac_cv_prog_cc_cross" 1>&6
 cross_compiling=$ac_cv_prog_cc_cross
 
 echo $ac_n "checking whether we are using GNU C""... $ac_c" 1>&6
-echo "configure:1509: checking whether we are using GNU C" >&5
+echo "configure:1523: checking whether we are using GNU C" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_gcc'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1514,7 +1528,7 @@ else
   yes;
 #endif
 EOF
-if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:1518: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
+if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:1532: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
   ac_cv_prog_gcc=yes
 else
   ac_cv_prog_gcc=no
@@ -1527,7 +1541,7 @@ if test $ac_cv_prog_gcc != yes; then
 fi
 
 echo $ac_n "checking build system type""... $ac_c" 1>&6
-echo "configure:1531: checking build system type" >&5
+echo "configure:1545: checking build system type" >&5
 
 build_alias=$build
 case "$build_alias" in
@@ -1550,7 +1564,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1554: checking for $ac_word" >&5
+echo "configure:1568: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_BUILD_CC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1581,7 +1595,7 @@ done
 fi
 
 echo $ac_n "checking how to run the C preprocessor""... $ac_c" 1>&6
-echo "configure:1585: checking how to run the C preprocessor" >&5
+echo "configure:1599: checking how to run the C preprocessor" >&5
 # On Suns, sometimes $CPP names a directory.
 if test -n "$CPP" && test -d "$CPP"; then
   CPP=
@@ -1596,13 +1610,13 @@ else
   # On the NeXT, cc -E runs the code through the compiler's parser,
   # not just through cpp.
   cat > conftest.$ac_ext <<EOF
-#line 1600 "configure"
+#line 1614 "configure"
 #include "confdefs.h"
 #include <assert.h>
 Syntax Error
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1606: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1620: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out`
 if test -z "$ac_err"; then
   :
@@ -1613,13 +1627,13 @@ else
   rm -rf conftest*
   CPP="${CC-cc} -E -traditional-cpp"
   cat > conftest.$ac_ext <<EOF
-#line 1617 "configure"
+#line 1631 "configure"
 #include "confdefs.h"
 #include <assert.h>
 Syntax Error
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1623: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1637: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out`
 if test -z "$ac_err"; then
   :
@@ -1652,7 +1666,7 @@ LD=`$CC -print-prog-name=ld`
 
 # Determine whether we are using GNU binutils.
 echo $ac_n "checking whether $AS is GNU as""... $ac_c" 1>&6
-echo "configure:1656: checking whether $AS is GNU as" >&5
+echo "configure:1670: checking whether $AS is GNU as" >&5
 if eval "test \"`echo '$''{'libc_cv_prog_as_gnu'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1670,7 +1684,7 @@ rm -f a.out
 gnu_as=$libc_cv_prog_as_gnu
 
 echo $ac_n "checking whether $LD is GNU ld""... $ac_c" 1>&6
-echo "configure:1674: checking whether $LD is GNU ld" >&5
+echo "configure:1688: checking whether $LD is GNU ld" >&5
 if eval "test \"`echo '$''{'libc_cv_prog_ld_gnu'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1689,7 +1703,7 @@ gnu_ld=$libc_cv_prog_ld_gnu
 # Extract the first word of "${ac_tool_prefix}ar", so it can be a program name with args.
 set dummy ${ac_tool_prefix}ar; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1693: checking for $ac_word" >&5
+echo "configure:1707: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_AR'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1720,7 +1734,7 @@ fi
 # Extract the first word of "${ac_tool_prefix}ranlib", so it can be a program name with args.
 set dummy ${ac_tool_prefix}ranlib; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1724: checking for $ac_word" >&5
+echo "configure:1738: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_RANLIB'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1751,7 +1765,7 @@ if test -n "$ac_tool_prefix"; then
   # Extract the first word of "ranlib", so it can be a program name with args.
 set dummy ranlib; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1755: checking for $ac_word" >&5
+echo "configure:1769: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_RANLIB'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1785,7 +1799,7 @@ fi
 # Extract the first word of "${ac_tool_prefix}mig", so it can be a program name with args.
 set dummy ${ac_tool_prefix}mig; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1789: checking for $ac_word" >&5
+echo "configure:1803: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_MIG'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1825,7 +1839,7 @@ fi
 
 # check if ar takes S
 echo $ac_n "checking for ar S""... $ac_c" 1>&6
-echo "configure:1829: checking for ar S" >&5
+echo "configure:1843: checking for ar S" >&5
 if eval "test \"`echo '$''{'libc_cv_ar_S'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1833,7 +1847,7 @@ else
 tmplib=lib$$.a
 rm -f $tmpo $tmplib
 touch $tmpo
-if { ac_try='${AR-ar} rcuS $tmplib $tmpo > /dev/null 2>&1'; { (eval echo configure:1837: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
+if { ac_try='${AR-ar} rcuS $tmplib $tmpo > /dev/null 2>&1'; { (eval echo configure:1851: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
   libc_cv_ar_S=yes
 else
   libc_cv_ar_S=no
@@ -1851,7 +1865,7 @@ echo "$ac_t""$libc_cv_ar_S" 1>&6
 # - two terminals occur directly after each other
 # - the path contains an element with a dot in it
 echo $ac_n "checking LD_LIBRARY_PATH variable""... $ac_c" 1>&6
-echo "configure:1855: checking LD_LIBRARY_PATH variable" >&5
+echo "configure:1869: checking LD_LIBRARY_PATH variable" >&5
 case ${LD_LIBRARY_PATH} in
   [:\;]* | *[:\;] | *[:\;][:\;]* |  *[:\;]. | .[:\;]*| . | *[:\;].[:\;]* )
     ld_library_path_setting="contains current directory"
@@ -1871,7 +1885,7 @@ fi
 # Extract the first word of "bash", so it can be a program name with args.
 set dummy bash; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1875: checking for $ac_word" >&5
+echo "configure:1889: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_path_BASH'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1913,7 +1927,7 @@ if test "$BASH" = no; then
   # Extract the first word of "ksh", so it can be a program name with args.
 set dummy ksh; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1917: checking for $ac_word" >&5
+echo "configure:1931: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_path_KSH'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1959,7 +1973,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1963: checking for $ac_word" >&5
+echo "configure:1977: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_path_PERL'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1994,7 +2008,7 @@ test -n "$PERL" || PERL="no"
 
 
 echo $ac_n "checking for signed size_t type""... $ac_c" 1>&6
-echo "configure:1998: checking for signed size_t type" >&5
+echo "configure:2012: checking for signed size_t type" >&5
 if eval "test \"`echo '$''{'libc_cv_signed_size_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2018,12 +2032,12 @@ EOF
 fi
 
 echo $ac_n "checking for libc-friendly stddef.h""... $ac_c" 1>&6
-echo "configure:2022: checking for libc-friendly stddef.h" >&5
+echo "configure:2036: checking for libc-friendly stddef.h" >&5
 if eval "test \"`echo '$''{'libc_cv_friendly_stddef'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2027 "configure"
+#line 2041 "configure"
 #include "confdefs.h"
 #define __need_size_t
 #define __need_wchar_t
@@ -2038,7 +2052,7 @@ size_t size; wchar_t wchar;
 if (&size == NULL || &wchar == NULL) abort ();
 ; return 0; }
 EOF
-if { (eval echo configure:2042: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2056: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   libc_cv_friendly_stddef=yes
 else
@@ -2057,7 +2071,7 @@ override stddef.h = # The installed <stddef.h> seems to be libc-friendly."
 fi
 
 echo $ac_n "checking whether we need to use -P to assemble .S files""... $ac_c" 1>&6
-echo "configure:2061: checking whether we need to use -P to assemble .S files" >&5
+echo "configure:2075: checking whether we need to use -P to assemble .S files" >&5
 if eval "test \"`echo '$''{'libc_cv_need_minus_P'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2080,7 +2094,7 @@ asm-CPPFLAGS = -P # The assembler can't grok cpp's # line directives."
 fi
 
 echo $ac_n "checking for assembler global-symbol directive""... $ac_c" 1>&6
-echo "configure:2084: checking for assembler global-symbol directive" >&5
+echo "configure:2098: checking for assembler global-symbol directive" >&5
 if eval "test \"`echo '$''{'libc_cv_asm_global_directive'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2110,7 +2124,7 @@ EOF
 fi
 
 echo $ac_n "checking for .set assembler directive""... $ac_c" 1>&6
-echo "configure:2114: checking for .set assembler directive" >&5
+echo "configure:2128: checking for .set assembler directive" >&5
 if eval "test \"`echo '$''{'libc_cv_asm_set_directive'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2144,7 +2158,7 @@ EOF
 fi
 
 echo $ac_n "checking for .symver assembler directive""... $ac_c" 1>&6
-echo "configure:2148: checking for .symver assembler directive" >&5
+echo "configure:2162: checking for .symver assembler directive" >&5
 if eval "test \"`echo '$''{'libc_cv_asm_symver_directive'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2163,7 +2177,7 @@ fi
 
 echo "$ac_t""$libc_cv_asm_symver_directive" 1>&6
 echo $ac_n "checking for ld --version-script""... $ac_c" 1>&6
-echo "configure:2167: checking for ld --version-script" >&5
+echo "configure:2181: checking for ld --version-script" >&5
 if eval "test \"`echo '$''{'libc_cv_ld_version_script_option'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2186,7 +2200,7 @@ EOF
     if { ac_try='${CC-cc} $CFLAGS -shared -o conftest.so conftest.o
 					-nostartfiles -nostdlib
 					-Wl,--version-script,conftest.map
-		       1>&5'; { (eval echo configure:2190: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; };
+		       1>&5'; { (eval echo configure:2204: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; };
     then
       libc_cv_ld_version_script_option=yes
     else
@@ -2224,7 +2238,7 @@ if test $VERSIONING = no; then
 fi
 if test $elf = yes; then
   echo $ac_n "checking for .previous assembler directive""... $ac_c" 1>&6
-echo "configure:2228: checking for .previous assembler directive" >&5
+echo "configure:2242: checking for .previous assembler directive" >&5
 if eval "test \"`echo '$''{'libc_cv_asm_previous_directive'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2232,7 +2246,7 @@ else
 .section foo_section
 .previous
 EOF
-  if { ac_try='${CC-cc} -c $CFLAGS conftest.s 1>&5'; { (eval echo configure:2236: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
+  if { ac_try='${CC-cc} -c $CFLAGS conftest.s 1>&5'; { (eval echo configure:2250: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
     libc_cv_asm_previous_directive=yes
   else
     libc_cv_asm_previous_directive=no
@@ -2248,7 +2262,7 @@ EOF
 
   else
     echo $ac_n "checking for .popsection assembler directive""... $ac_c" 1>&6
-echo "configure:2252: checking for .popsection assembler directive" >&5
+echo "configure:2266: checking for .popsection assembler directive" >&5
 if eval "test \"`echo '$''{'libc_cv_asm_popsection_directive'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2256,7 +2270,7 @@ else
 .pushsection foo_section
 .popsection
 EOF
-    if { ac_try='${CC-cc} -c $CFLAGS conftest.s 1>&5'; { (eval echo configure:2260: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
+    if { ac_try='${CC-cc} -c $CFLAGS conftest.s 1>&5'; { (eval echo configure:2274: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
       libc_cv_asm_popsection_directive=yes
     else
       libc_cv_asm_popsection_directive=no
@@ -2276,12 +2290,12 @@ fi
 
 if test $elf != yes; then
   echo $ac_n "checking for .init and .fini sections""... $ac_c" 1>&6
-echo "configure:2280: checking for .init and .fini sections" >&5
+echo "configure:2294: checking for .init and .fini sections" >&5
 if eval "test \"`echo '$''{'libc_cv_have_initfini'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2285 "configure"
+#line 2299 "configure"
 #include "confdefs.h"
 
 int main() {
@@ -2290,7 +2304,7 @@ asm (".section .init");
 				    asm (".text");
 ; return 0; }
 EOF
-if { (eval echo configure:2294: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2308: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   libc_cv_have_initfini=yes
 else
@@ -2318,19 +2332,19 @@ if test $elf = yes; then
 else
   if test $ac_cv_prog_cc_works = yes; then
     echo $ac_n "checking for _ prefix on C symbol names""... $ac_c" 1>&6
-echo "configure:2322: checking for _ prefix on C symbol names" >&5
+echo "configure:2336: checking for _ prefix on C symbol names" >&5
 if eval "test \"`echo '$''{'libc_cv_asm_underscores'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2327 "configure"
+#line 2341 "configure"
 #include "confdefs.h"
 asm ("_glibc_foobar:");
 int main() {
 glibc_foobar ();
 ; return 0; }
 EOF
-if { (eval echo configure:2334: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
+if { (eval echo configure:2348: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest; then
   rm -rf conftest*
   libc_cv_asm_underscores=yes
 else
@@ -2345,17 +2359,17 @@ fi
 echo "$ac_t""$libc_cv_asm_underscores" 1>&6
   else
     echo $ac_n "checking for _ prefix on C symbol names""... $ac_c" 1>&6
-echo "configure:2349: checking for _ prefix on C symbol names" >&5
+echo "configure:2363: checking for _ prefix on C symbol names" >&5
 if eval "test \"`echo '$''{'libc_cv_asm_underscores'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2354 "configure"
+#line 2368 "configure"
 #include "confdefs.h"
 void underscore_test(void) {
 return; }
 EOF
-if { (eval echo configure:2359: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2373: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   if grep _underscore_test conftest* >/dev/null; then
     rm -f conftest*
     libc_cv_asm_underscores=yes
@@ -2387,7 +2401,7 @@ if test $elf = yes; then
 fi
 
 echo $ac_n "checking for assembler .weak directive""... $ac_c" 1>&6
-echo "configure:2391: checking for assembler .weak directive" >&5
+echo "configure:2405: checking for assembler .weak directive" >&5
 if eval "test \"`echo '$''{'libc_cv_asm_weak_directive'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2410,7 +2424,7 @@ echo "$ac_t""$libc_cv_asm_weak_directive" 1>&6
 
 if test $libc_cv_asm_weak_directive = no; then
   echo $ac_n "checking for assembler .weakext directive""... $ac_c" 1>&6
-echo "configure:2414: checking for assembler .weakext directive" >&5
+echo "configure:2428: checking for assembler .weakext directive" >&5
 if eval "test \"`echo '$''{'libc_cv_asm_weakext_directive'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2448,7 +2462,7 @@ EOF
 fi
 
 echo $ac_n "checking for ld --no-whole-archive""... $ac_c" 1>&6
-echo "configure:2452: checking for ld --no-whole-archive" >&5
+echo "configure:2466: checking for ld --no-whole-archive" >&5
 if eval "test \"`echo '$''{'libc_cv_ld_no_whole_archive'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2459,7 +2473,7 @@ __throw () {}
 EOF
 if { ac_try='${CC-cc} $CFLAGS
 			    -nostdlib -nostartfiles -Wl,--no-whole-archive
-			    -o conftest conftest.c 1>&5'; { (eval echo configure:2463: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
+			    -o conftest conftest.c 1>&5'; { (eval echo configure:2477: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
   libc_cv_ld_no_whole_archive=yes
 else
   libc_cv_ld_no_whole_archive=no
@@ -2470,7 +2484,7 @@ fi
 echo "$ac_t""$libc_cv_ld_no_whole_archive" 1>&6
 
 echo $ac_n "checking for gcc -fno-exceptions""... $ac_c" 1>&6
-echo "configure:2474: checking for gcc -fno-exceptions" >&5
+echo "configure:2488: checking for gcc -fno-exceptions" >&5
 if eval "test \"`echo '$''{'libc_cv_gcc_no_exceptions'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2481,7 +2495,7 @@ __throw () {}
 EOF
 if { ac_try='${CC-cc} $CFLAGS
 			    -nostdlib -nostartfiles -fno-exceptions
-			    -o conftest conftest.c 1>&5'; { (eval echo configure:2485: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
+			    -o conftest conftest.c 1>&5'; { (eval echo configure:2499: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
   libc_cv_gcc_no_exceptions=yes
 else
   libc_cv_gcc_no_exceptions=no
@@ -2493,14 +2507,14 @@ echo "$ac_t""$libc_cv_gcc_no_exceptions" 1>&6
 
 if test "$base_machine" = alpha ; then
 echo $ac_n "checking for function ..ng prefix""... $ac_c" 1>&6
-echo "configure:2497: checking for function ..ng prefix" >&5
+echo "configure:2511: checking for function ..ng prefix" >&5
 if eval "test \"`echo '$''{'libc_cv_gcc_alpha_ng_prefix'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.c <<\EOF
 foo () { }
 EOF
-if { ac_try='${CC-cc} -S conftest.c -o - | fgrep "\$foo..ng" > /dev/null'; { (eval echo configure:2504: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; };
+if { ac_try='${CC-cc} -S conftest.c -o - | fgrep "\$foo..ng" > /dev/null'; { (eval echo configure:2518: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; };
 then
   libc_cv_gcc_alpha_ng_prefix=yes
 else
@@ -2524,12 +2538,12 @@ fi
 fi
 
 echo $ac_n "checking for DWARF2 unwind info support""... $ac_c" 1>&6
-echo "configure:2528: checking for DWARF2 unwind info support" >&5
+echo "configure:2542: checking for DWARF2 unwind info support" >&5
 if eval "test \"`echo '$''{'libc_cv_gcc_dwarf2_unwind_info'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.c <<EOF
-#line 2533 "configure"
+#line 2547 "configure"
 static char __EH_FRAME_BEGIN__;
 _start ()
 {
@@ -2556,7 +2570,7 @@ __bzero () {}
 EOF
 if { ac_try='${CC-cc} $CFLAGS -DCHECK__register_frame_info
 			    -nostdlib -nostartfiles
-			    -o conftest conftest.c -lgcc >&5'; { (eval echo configure:2560: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
+			    -o conftest conftest.c -lgcc >&5'; { (eval echo configure:2574: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
   libc_cv_gcc_dwarf2_unwind_info=static
 else
   libc_cv_gcc_dwarf2_unwind_info=no
@@ -2564,7 +2578,7 @@ fi
 if test $libc_cv_gcc_dwarf2_unwind_info = no; then
   if { ac_try='${CC-cc} $CFLAGS -DCHECK__register_frame
 			      -nostdlib -nostartfiles
-			      -o conftest conftest.c -lgcc >&5'; { (eval echo configure:2568: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
+			      -o conftest conftest.c -lgcc >&5'; { (eval echo configure:2582: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; }; then
     libc_cv_gcc_dwarf2_unwind_info=yes
   else
     libc_cv_gcc_dwarf2_unwind_info=no
@@ -2638,7 +2652,7 @@ if test "$uname" = "sysdeps/generic"; then
   fi
 
   echo $ac_n "checking OS release for uname""... $ac_c" 1>&6
-echo "configure:2642: checking OS release for uname" >&5
+echo "configure:2656: checking OS release for uname" >&5
 if eval "test \"`echo '$''{'libc_cv_uname_release'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2660,7 +2674,7 @@ echo "$ac_t""$libc_cv_uname_release" 1>&6
   uname_release="$libc_cv_uname_release"
 
   echo $ac_n "checking OS version for uname""... $ac_c" 1>&6
-echo "configure:2664: checking OS version for uname" >&5
+echo "configure:2678: checking OS version for uname" >&5
 if eval "test \"`echo '$''{'libc_cv_uname_version'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2682,7 +2696,7 @@ else
 fi
 
 echo $ac_n "checking stdio selection""... $ac_c" 1>&6
-echo "configure:2686: checking stdio selection" >&5
+echo "configure:2700: checking stdio selection" >&5
 
 case $stdio in
 libio) cat >> confdefs.h <<\EOF
@@ -2694,7 +2708,7 @@ esac
 echo "$ac_t""$stdio" 1>&6
 
 echo $ac_n "checking ldap selection""... $ac_c" 1>&6
-echo "configure:2698: checking ldap selection" >&5
+echo "configure:2712: checking ldap selection" >&5
 
 case $add_ons in
 *ldap*)
@@ -2757,7 +2771,7 @@ if test $static = no && test $shared = yes; then
 fi
 
 echo $ac_n "checking whether -fPIC is default""... $ac_c" 1>&6
-echo "configure:2761: checking whether -fPIC is default" >&5
+echo "configure:2775: checking whether -fPIC is default" >&5
 if eval "test \"`echo '$''{'pic_default'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -2926,6 +2940,7 @@ s%@infodir@%$infodir%g
 s%@mandir@%$mandir%g
 s%@with_cvs@%$with_cvs%g
 s%@subdirs@%$subdirs%g
+s%@force_install@%$force_install%g
 s%@host@%$host%g
 s%@host_alias@%$host_alias%g
 s%@host_cpu@%$host_cpu%g
diff --git a/configure.in b/configure.in
index 44cde5c8eb..6d17bb30cb 100644
--- a/configure.in
+++ b/configure.in
@@ -91,8 +91,9 @@ AC_ARG_ENABLE(versioning, dnl
 
 dnl Generic infrastructure for drop-in additions to libc.
 AC_ARG_ENABLE(add-ons, dnl
-[  --enable-add-ons[=DIR1,DIR2]... configure and build add-ons in DIR1,DIR2,...
-                                  search for add-ons if no parameter given],
+[  --enable-add-ons[=DIR1,DIR2]...
+			  configure and build add-ons in DIR1,DIR2,...
+                          search for add-ons if no parameter given],
   [case "$enableval" in
     yes) if test "$srcdir" = "."; then
 	   add_ons=`echo */configure | sed -e 's!/configure!!g'`
@@ -126,6 +127,12 @@ if test x"$static_nss" = xyes; then
   AC_DEFINE(DO_STATIC_NSS)
 fi
 
+AC_ARG_ENABLE(force-install,
+[  --enable-force-install  force installation of files from this package,
+			  even if they are older than the installed files],
+	      force_install=$enableval, force_install=yes)
+AC_SUBST(force_install)
+
 AC_CANONICAL_HOST
 
 # The way shlib-versions is used to generate soversions.mk uses a
diff --git a/db/Makefile b/db/Makefile
index 2d742d133a..e9817e2f89 100644
--- a/db/Makefile
+++ b/db/Makefile
@@ -53,11 +53,11 @@ endif
 $(objpfx)libdb.so: $(common-objpfx)libc.so
 
 subdir_install: $(inst_libdir)/libndbm.a
-$(inst_libdir)/libndbm.a: $(inst_libdir)/libdb.a
+$(inst_libdir)/libndbm.a: $(inst_libdir)/libdb.a $(+force)
 	$(make-link)
 
 ifeq ($(build-shared),yes)
 subdir_install: $(inst_libdir)/libndbm.so
-$(inst_libdir)/libndbm.so: $(inst_libdir)/libdb.so
+$(inst_libdir)/libndbm.so: $(inst_libdir)/libdb.so $(+force)
 	$(make-link)
 endif
diff --git a/db2/Makefile b/db2/Makefile
index 2d95bd715c..594b802861 100644
--- a/db2/Makefile
+++ b/db2/Makefile
@@ -112,11 +112,11 @@ endif
 $(objpfx)libdb.so: $(common-objpfx)libc.so
 
 subdir_install: $(inst_libdir)/libndbm.a
-$(inst_libdir)/libndbm.a: $(inst_libdir)/libdb.a
+$(inst_libdir)/libndbm.a: $(inst_libdir)/libdb.a $(+force)
 	$(make-link)
 
 ifeq ($(build-shared),yes)
 subdir_install: $(inst_libdir)/libndbm.so
-$(inst_libdir)/libndbm.so: $(inst_libdir)/libdb.so
+$(inst_libdir)/libndbm.so: $(inst_libdir)/libdb.so $(+force)
 	$(make-link)
 endif
diff --git a/elf/Makefile b/elf/Makefile
index 70b0c6a3e2..8ad8d98f10 100644
--- a/elf/Makefile
+++ b/elf/Makefile
@@ -155,7 +155,7 @@ CFLAGS-dl-load.c += -Wno-uninitialized
 # rule to build a shared library.
 $(objpfx)libdl.so: $(objpfx)libdl_pic.a $(common-objpfx)libc.so $(objpfx)ld.so
 
-$(inst_slibdir)/$(rtld-version-installed-name): $(objpfx)ld.so
+$(inst_slibdir)/$(rtld-version-installed-name): $(objpfx)ld.so $(+force)
 	$(do-install-program)
 
 $(inst_slibdir)/$(rtld-installed-name): \
diff --git a/elf/dl-load.c b/elf/dl-load.c
index edaa2cc8c5..c3337e4386 100644
--- a/elf/dl-load.c
+++ b/elf/dl-load.c
@@ -830,7 +830,6 @@ print_search_path (struct r_search_path_elem **list,
                    const char *what, const char *name)
 {
   char buf[max_dirnamelen + max_capstrlen];
-  char *endp;
   int first = 1;
 
   _dl_debug_message (1, " search path=", NULL);
diff --git a/iconv/Makefile b/iconv/Makefile
index afe48d900a..783b1d55b5 100644
--- a/iconv/Makefile
+++ b/iconv/Makefile
@@ -35,5 +35,5 @@ include ../Rules
 
 subdir_install: $(inst_bindir)/iconv
 
-$(inst_bindir)/iconv: $(objpfx)iconv_prog
+$(inst_bindir)/iconv: $(objpfx)iconv_prog $(+force)
 	$(do-install-program)
diff --git a/iconvdata/Makefile b/iconvdata/Makefile
index cd635d86d6..f549091362 100644
--- a/iconvdata/Makefile
+++ b/iconvdata/Makefile
@@ -184,9 +184,10 @@ endif
 headers: $(sed-generated-headers) $(perl-generated-headers)
 
 
-$(addprefix $(inst_gconvdir)/, $(modules.so)): $(inst_gconvdir)/%: $(objpfx)%
+$(addprefix $(inst_gconvdir)/, $(modules.so)): \
+    $(inst_gconvdir)/%: $(objpfx)% $(+force)
 	$(do-install-program)
-$(inst_gconvdir)/gconv-modules: gconv-modules
+$(inst_gconvdir)/gconv-modules: gconv-modules $(+force)
 	$(do-install)
 endif
 
diff --git a/intl/Makefile b/intl/Makefile
index 9ee9ba4ed4..c6d58dadad 100644
--- a/intl/Makefile
+++ b/intl/Makefile
@@ -32,7 +32,7 @@ include ../Rules
 CPPFLAGS += -D'GNULOCALEDIR="$(localedir)"' \
 	    -D'LOCALE_ALIAS_PATH="$(localedir):$(i18ndir)"'
 
-$(inst_localedir)/locale.alias: locale.alias
+$(inst_localedir)/locale.alias: locale.alias $(+force)
 	$(do-install)
 
 ifdef gettext-srcdir
diff --git a/localedata/Makefile b/localedata/Makefile
index dac662081e..25dde67657 100644
--- a/localedata/Makefile
+++ b/localedata/Makefile
@@ -55,8 +55,8 @@ install-others := $(addprefix $(inst_i18ndir)/, $(charmaps) $(locales))
 include ../Rules
 
 # Install the source files in the appropriate directories.
-$(inst_i18ndir)/charmaps/%: charmaps/%; $(do-install)
-$(inst_i18ndir)/locales/%: locales/%; $(do-install)
+$(inst_i18ndir)/charmaps/%: charmaps/% $(+force); $(do-install)
+$(inst_i18ndir)/locales/%: locales/% $(+force); $(do-install)
 
 
 ifeq (no,$(cross-compiling))
diff --git a/login/Makefile b/login/Makefile
index e203e9a692..5f7861b61c 100644
--- a/login/Makefile
+++ b/login/Makefile
@@ -53,7 +53,7 @@ libutil-map	:= libutil.map
 include ../Rules
 
 # pt_chown needs to be setuid root.
-$(inst_libexecdir)/pt_chown: $(objpfx)pt_chown
+$(inst_libexecdir)/pt_chown: $(objpfx)pt_chown $(+force)
 	$(make-target-directory)
 	-$(INSTALL) -m 4755 -o root $< $@
 
diff --git a/manual/socket.texi b/manual/socket.texi
index 954d598dd4..025abcf58a 100644
--- a/manual/socket.texi
+++ b/manual/socket.texi
@@ -656,7 +656,7 @@ the file name string.  This can be done using the macro @code{SUN_LEN}:
 
 @comment sys/un.h
 @comment BSD
-@deftypefn {Macro} int SUNLEN (@emph{struct sockaddr_un *} @var{ptr})
+@deftypefn {Macro} int SUN_LEN (@emph{struct sockaddr_un *} @var{ptr})
 The macro computes the length of socket address in the local namespace.
 @end deftypefn
 
@@ -921,7 +921,7 @@ example the class A network 10 is written as @samp{10.0.0.0/8}.
 
 IPv6 addresses contain 128 bits (IPv4 has 32 bits) of data.  A host
 address is usually written as eight 16-bit hexadecimal numbers that are
-separated by colons.  Two colons are used to appreviated strings of
+separated by colons.  Two colons are used to abbreviate strings of
 consecutive zeros.  For example the IPv6 loopback address which is
 @samp{0:0:0:0:0:0:0:1} can be just written as @samp{::1}.
 
@@ -1056,7 +1056,7 @@ given in the standard numbers-and-dots notation. The returned address is
 in host order. If the input is not valid, @code{inet_network} returns
 @code{-1}.
 
-The function works only with traditional IPv4 class A,B and C network
+The function works only with traditional IPv4 class A, B and C network
 types.  It doesn't work with classless addresses and shouldn't be used
 anymore.
 @end deftypefun
@@ -1093,7 +1093,7 @@ number @var{net} with the local-address-within-network number
 This function returns the local-address-within-network part of the
 Internet host address @var{addr}.
 
-The function works only with traditional IPv4 class A,B and C network
+The function works only with traditional IPv4 class A, B and C network
 types.  It doesn't work with classless addresses and shouldn't be used
 anymore.
 @end deftypefun
@@ -1104,7 +1104,7 @@ anymore.
 This function returns the network number part of the Internet host
 address @var{addr}.
 
-The function works only with traditional IPv4 class A,B and C network
+The function works only with traditional IPv4 class A, B and C network
 types.  It doesn't work with classless addresses and shouldn't be used
 anymore.
 @end deftypefun
diff --git a/po/Makefile b/po/Makefile
index 4056201c9f..e1a5314ee7 100644
--- a/po/Makefile
+++ b/po/Makefile
@@ -59,7 +59,7 @@ include ../Rules
 	$(MSGFMT) -o $@ $<
 
 # Install the message object files as libc.po in the language directory.
-$(mo-installed): %.mo; $(do-install) || exit 0
+$(mo-installed): %.mo $(+force); $(do-install) || exit 0
 
 .PHONY: linguas linguas.mo
 linguas: $(ALL_LINGUAS:=.po)
diff --git a/sunrpc/Makefile b/sunrpc/Makefile
index c0c9288020..25a62a2155 100644
--- a/sunrpc/Makefile
+++ b/sunrpc/Makefile
@@ -124,12 +124,12 @@ rpcgen-cmd = $(built-program-cmd)
 # a shorter name.  But if the filesystem can handle it, we want to
 # install under the proper name as well.
 $(inst_includedir)/rpcsvc/bootparam_prot.h: \
-  $(inst_includedir)/rpcsvc/bootparam.h
+  $(inst_includedir)/rpcsvc/bootparam.h $(+force)
 	@echo It is safe to ignore an error here if this file name is too long.
 	-$(do-install)
 
 # Install the rpc data base file.
-$(inst_sysconfdir)/rpc: etc.rpc
+$(inst_sysconfdir)/rpc: etc.rpc $(+force)
 	$(do-install)
 
 # Generate the rpcsvc headers with rpcgen.
diff --git a/sysdeps/mach/hurd/Makefile b/sysdeps/mach/hurd/Makefile
index 9f1ce74eb1..454ac8f98c 100644
--- a/sysdeps/mach/hurd/Makefile
+++ b/sysdeps/mach/hurd/Makefile
@@ -106,8 +106,8 @@ libc-name = crt
 
 ifeq (,$(subdir))
 install-others += $(inst_libdir)/libc.a $(inst_libdir)/libc_p.a
-$(inst_libdir)/libc.a: $(hurd)/libc-ldscript; $(do-install)
-$(inst_libdir)/libc_p.a: $(hurd)/libc_p-ldscript; $(do-install)
+$(inst_libdir)/libc.a: $(hurd)/libc-ldscript $(+force); $(do-install)
+$(inst_libdir)/libc_p.a: $(hurd)/libc_p-ldscript $(+force); $(do-install)
 endif
 
 # Make sure these are used to build the libc.so shared object too.
diff --git a/sysdeps/standalone/i386/force_cpu386/Makefile b/sysdeps/standalone/i386/force_cpu386/Makefile
index a51ed7f429..3ed09643b2 100644
--- a/sysdeps/standalone/i386/force_cpu386/Makefile
+++ b/sysdeps/standalone/i386/force_cpu386/Makefile
@@ -20,6 +20,7 @@
 
 ifeq (bare,$(subdir))
 install-others += $(inst_libdir)/force_cpu386.ld
-$(inst_libdir)/force_cpu386.ld: $(sysdep_dir)/standalone/i386/target.ld
+$(inst_libdir)/force_cpu386.ld: $(sysdep_dir)/standalone/i386/target.ld \
+				$(+force)
 	$(do-install)
 endif
diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile
index 9abab1e1ce..3d52210fb8 100644
--- a/sysdeps/unix/sysv/linux/Makefile
+++ b/sysdeps/unix/sysv/linux/Makefile
@@ -37,7 +37,7 @@ $(objpfx)syscall-%.h $(objpfx)syscall-%.d: ../sysdeps/unix/sysv/linux/sys/syscal
 	} > $(@:.d=.h).new
 	mv -f $(@:.d=.h).new $(@:.d=.h)
 
-$(inst_includedir)/bits/syscall.h: $(objpfx)syscall-list.h
+$(inst_includedir)/bits/syscall.h: $(objpfx)syscall-list.h $(+force)
 	$(make-target-directory)
 	if test -r $@ && cmp -s $< $@; \
         then echo 'bits/syscall.h unchanged'; \
diff --git a/sysdeps/unix/sysv/linux/getcwd.c b/sysdeps/unix/sysv/linux/getcwd.c
index b34960eac9..19a2c0f257 100644
--- a/sysdeps/unix/sysv/linux/getcwd.c
+++ b/sysdeps/unix/sysv/linux/getcwd.c
@@ -64,7 +64,7 @@ __getcwd (char *buf, size_t size)
 	  return NULL;
 	}
 
-      alloc_size = PATH_MAX + 1;
+      alloc_size = PATH_MAX;
     }
 
   if (buf != NULL)
@@ -88,9 +88,9 @@ __getcwd (char *buf, size_t size)
 	{
 	  if (buf == NULL)
 	    {
-	      buf = realloc (path, strlen (path) + 1);
+	      buf = realloc (path, (size_t) retval);
 	      if (buf == NULL)
-		/* `relloc' failed but we still have the original string.  */
+		/* `realloc' failed but we still have the original string.  */
 		buf = path;
 	    }
 	  return buf;
diff --git a/timezone/Makefile b/timezone/Makefile
index fc8b59869d..3d05109916 100644
--- a/timezone/Makefile
+++ b/timezone/Makefile
@@ -136,7 +136,8 @@ target-zone-flavor = $(filter /posix /right, \
 					  $(patsubst $(inst_zonedir)/%,%,$@))))
 
 ifdef localtime
-$(installed-localtime-file): $(inst_zonedir)/$(localtime) $(objpfx)zic
+$(installed-localtime-file): $(inst_zonedir)/$(localtime) $(objpfx)zic \
+			     $(+force)
 	$(make-target-directory)
 	if test -r $@; then \
 	  echo Site timezone NOT reset to Factory.; \
@@ -147,7 +148,8 @@ $(installed-localtime-file): $(inst_zonedir)/$(localtime) $(objpfx)zic
 	fi
 endif
 ifdef posixrules
-$(installed-posixrules-file): $(inst_zonedir)/$(posixrules) $(objpfx)zic
+$(installed-posixrules-file): $(inst_zonedir)/$(posixrules) $(objpfx)zic \
+			      $(+force)
 	$(zic-cmd) -p $(posixrules)
 endif
 
@@ -188,5 +190,6 @@ $(objpfx)tzselect: tzselect.ksh $(common-objpfx)config.make
 	chmod 555 $@.new
 	mv -f $@.new $@
 
-$(addprefix $(inst_zonedir)/,iso3166.tab zone.tab): $(inst_zonedir)/%: %
+$(addprefix $(inst_zonedir)/,iso3166.tab zone.tab): \
+    $(inst_zonedir)/%: % $(+force)
 	$(do-install)