Work around unportability of nl_langinfo(CODESET).

* m4/glibc21.m4: New file, from gnulib.
* Makefile.sub (M4MACROS): Add m4/glibc21.m4.
* configure.ac: Also test for stddef.h, and invoke jm_GLIBC21.
* Makefile.in (HOST, GLIBC21): New variables.
(MDEFINES): Pass them to subdirectories.
* src/include/relocate.h (relocatep): Define with C linkage.
* src/include/localcharset.h: New file, from gnulib.
* src/libs/libgroff/localcharset.c: New file, from gnulib with a
modification for relocate().
* src/libs/libgroff/config.charset: New file, from gnulib.
* src/libs/libgroff/ref-add.sin: New file, from gnulib.
* src/libs/libgroff/ref-del.sin: New file, from gnulib.
* src/libs/libgroff/Makefile.sub (EXTRA_CFLAGS): Also define LIBDIR.
(OBJS): Add localcharset.o.
(CSRCS): Add localcharset.c.
(all): Add dependencies to charset.alias, ref-add.sed, ref-del.sed.
(charset.alias): New rule.
(PACKAGE): New variable.
(ref-add.sed, ref-del.sed): New rules.
(MKINSTALLDIRS): New variable.
(install_data): Depend on install_charset_data.
(install_charset_data): New rule for creating or updating
charset.alias.
(uninstall_sub): Depend on uninstall_charset_data.
(uninstall_charset_data): New rule for uninstalling or updating
charset.alias.
* src/preproc/preconv/preconv.cpp: Include localcharset.h instead
of <langinfo.h>.
(main): Initialize default_encoding from locale_charset() instead of
nl_langinfo(CODESET).

* aclocal.m4, configure, src/include/config.hin: Regenerated.

16 files changed, 1383 insertions, 32 deletions

diff --git a/ChangeLog b/ChangeLog
index e19bba15..bb3dc1c9 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,40 @@
+2006-01-10  Bruno Haible  <bruno@clisp.org>
+
+	Work around unportability of nl_langinfo(CODESET).
+
+	* m4/glibc21.m4: New file, from gnulib.
+	* Makefile.sub (M4MACROS): Add m4/glibc21.m4.
+	* configure.ac: Also test for stddef.h, and invoke jm_GLIBC21.
+	* Makefile.in (HOST, GLIBC21): New variables.
+	(MDEFINES): Pass them to subdirectories.
+	* src/include/relocate.h (relocatep): Define with C linkage.
+	* src/include/localcharset.h: New file, from gnulib.
+	* src/libs/libgroff/localcharset.c: New file, from gnulib with a
+	modification for relocate().
+	* src/libs/libgroff/config.charset: New file, from gnulib.
+	* src/libs/libgroff/ref-add.sin: New file, from gnulib.
+	* src/libs/libgroff/ref-del.sin: New file, from gnulib.
+	* src/libs/libgroff/Makefile.sub (EXTRA_CFLAGS): Also define LIBDIR.
+	(OBJS): Add localcharset.o.
+	(CSRCS): Add localcharset.c.
+	(all): Add dependencies to charset.alias, ref-add.sed, ref-del.sed.
+	(charset.alias): New rule.
+	(PACKAGE): New variable.
+	(ref-add.sed, ref-del.sed): New rules.
+	(MKINSTALLDIRS): New variable.
+	(install_data): Depend on install_charset_data.
+	(install_charset_data): New rule for creating or updating
+	charset.alias.
+	(uninstall_sub): Depend on uninstall_charset_data.
+	(uninstall_charset_data): New rule for uninstalling or updating
+	charset.alias.
+	* src/preproc/preconv/preconv.cpp: Include localcharset.h instead
+	of <langinfo.h>.
+	(main): Initialize default_encoding from locale_charset() instead of
+	nl_langinfo(CODESET).
+
+	* aclocal.m4, configure, src/include/config.hin: Regenerated.
+
 2006-01-10  Werner LEMBERG  <wl@gnu.org>
 
 	* src/preproc/preconv/preconv.cpp (conversion_iconv): Use
diff --git a/Makefile.in b/Makefile.in
index 57160d06..ebc2c6e9 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -25,6 +25,12 @@ top_srcdir=@abs_top_srcdir@
 VPATH=@srcdir@
 top_builddir=@abs_top_builddir@
 
+# `HOST' is the canonical host specification,
+#    CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM
+# or
+#    CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM
+HOST=@host@
+
 # `RT_SEP' is the operating system's native PATH SEPARATOR CHAR, which
 # is to be used in runtime PATHs compiled into groff executables.
 RT_SEP=@GROFF_PATH_SEPARATOR@
@@ -34,6 +40,10 @@ RT_SEP=@GROFF_PATH_SEPARATOR@
 # particularly in some Microsoft environments, it may differ.
 SH_SEP=@PATH_SEPARATOR@
 
+# `GLIBC21' is yes if the host operating system uses GNU libc 2.1 or newer,
+# otherwise no.
+GLIBC21=@GLIBC21@
+
 version=`cat $(top_srcdir)/VERSION`
 # No additional number if revision is zero.
 revision=`sed -e 's/^0$$//' -e 's/^[1-9].*$$/.&/' $(top_srcdir)/REVISION`
@@ -253,26 +263,30 @@ make_install_pdfdoc=@make_install_pdfdoc@
 # DEFINES should include the following:
 #
 # -DWORDS_BIGENDIAN		if your target platform is big-endian
+# -DIS_EBCDIC_HOST		if the host's encoding is EBCDIC
 #
-# -DHAVE_MMAP			if you have mmap() and <sys/mman.h>
-# -DARRAY_DELETE_NEEDS_SIZE	if your C++ doesn't understand `delete []'
-# -DSYS_SIGLIST_DECLARED	if you have sys_siglist[]
+# -DHAVE_DECL_SYS_SIGLIST	if you have sys_siglist[]
 # -DWCOREFLAG=0200		if the 0200 bit of the status returned by
 #				wait() indicates whether a core image was
 #				produced for a process that was terminated
 #				by a signal
 #
+# -DHAVE_DIRECT_H		if you have <direct.h>
 # -DHAVE_DIRENT_H		if you have <dirent.h>
+# -DHAVE_CC_INTTYPES_H		if you have a C++ <inttypes.h>
+# -DHAVE_PROCESS_H		if you have <process.h>
 # -DHAVE_LIMITS_H		if you have <limits.h>
 # -DHAVE_CC_LIMITS_H		if you have a C++ <limits.h>
 # -DHAVE_MATH_H			if you have <math.h>
 # -DHAVE_CC_OSFCN_H		if you have a C++ <osfcn.h>
-# -DHAVE_CC_INTTYPES_H		if you have a C++ <inttypes.h>
+# -DHAVE_STDDEF_H		if you have <stddef.h>
 # -DHAVE_STDLIB_H		if you have <stdlib.h>
 # -DHAVE_STRING_H		if you have <string.h>
 # -DHAVE_STRINGS_H		if you have <strings.h>
 # -DHAVE_SYS_DIR_H		if you have <sys/dir.h>
+# -DHAVE_SYS_STAT_H		if you have <sys/stat.h>
 # -DHAVE_SYS_TIME_H		if you have <sys/time.h>
+# -DHAVE_SYS_TYPES_H		if you have <sys/types.h>
 # -DHAVE_UNISTD_H		if you have <unistd.h>
 #
 # -DHAVE_FMOD			if you have fmod()
@@ -307,7 +321,7 @@ make_install_pdfdoc=@make_install_pdfdoc@
 # -DNEED_DECLARATION_SNPRINTF	if your C++ <stdio.h> doesn't declare
 # 				snprintf()
 # -DNEED_DECLARATION_SRAND	if your C++ <stdlib.h> doesn't declare srand()
-# -DNEED_DECLARATION_STRCASECMP if your C++ <string.h> doesn't declare
+# -DNEED_DECLARATION_STRCASECMP	if your C++ <string.h> doesn't declare
 #				strcasecmp()
 # -DNEED_DECLARATION_STRNCASECMP
 #				if your C++ <string.h> doesn't declare
@@ -317,20 +331,26 @@ make_install_pdfdoc=@make_install_pdfdoc@
 # -DNEED_DECLARATION_VSNPRINTF	if your C++ <stdio.h> doesn't declare
 #				vsnprintf()
 #
-# -DRET_TYPE_SRAND_IS_VOID	if srand() returns void not int
+# -DHAVE_STRUCT_EXCEPTION	if <math.h> defines struct exception
 # -DHAVE_SYS_NERR		if you have sysnerr in <errno.h> or <stdio.h>
 # -DHAVE_SYS_ERRLIST		if you have sys_errlist in <errno.h> or
 #				<stdio.h>
-# -DTRADITIONAL_CPP		if your C++ compiler uses a traditional
-#				(Reiser) preprocessor
+# -DICONV_CONST=const		if declaration of iconv() needs const
 # -DLONG_FOR_TIME_T		if localtime() takes a long * not a time_t *
-# -DHAVE_STRUCT_EXCEPTION	if <math.h> defines struct exception
 # -DRETSIGTYPE=int		if signal handlers return int not void	
-# -DICONV_CONST=const		if declaration of iconv() needs const
-# -DIS_EBCDIC_HOST		if the host's encoding is EBCDIC
+# -DRET_TYPE_SRAND_IS_VOID	if srand() returns void not int
+#
+# -Duintmax_t=<value>		define to `unsigned long' or `unsigned long
+#				long' if <inttypes.h> does not exist
+#
+# -DTRADITIONAL_CPP		if your C++ compiler uses a traditional
+#				(Reiser) preprocessor
+# -DARRAY_DELETE_NEEDS_SIZE	if your C++ doesn't understand `delete []'
+#
 # -DPAGE=A4			if the the printer's page size is A4
 # -DGHOSTSCRIPT=gs		the name (and directory if required) of the
 #				ghostscript program
+#
 DEFINES=@DEFS@
 
 # Include
@@ -420,6 +440,8 @@ MDEFINES= \
   "ETAGSCCFLAG=$(ETAGSCCFLAG)" \
   "ETAGSFLAGS=$(ETAGSFLAGS)" \
   "EXEEXT=$(EXEEXT)" \
+  "GLIBC21=$(GLIBC21)" \
+  "HOST=$(HOST)" \
   "INSTALL_DATA=$(INSTALL_DATA)" \
   "INSTALL_INFO=$(INSTALL_INFO)" \
   "INSTALL_PROGRAM=$(INSTALL_PROGRAM)" \
diff --git a/Makefile.sub b/Makefile.sub
index 26dfda11..ddb18fcf 100644
--- a/Makefile.sub
+++ b/Makefile.sub
@@ -14,7 +14,7 @@ CLEANADD=Makefile.cfg conftest*
 
 M4MACROS = \
   $(srcdir)/m4/groff.m4 \
-  $(srcdir)/m4/codeset.m4 \
+  $(srcdir)/m4/codeset.m4 $(srcdir)/m4/glibc21.m4 \
   $(srcdir)/m4/iconv.m4 \
   $(srcdir)/m4/lib-link.m4 $(srcdir)/m4/lib-ld.m4 $(srcdir)/m4/lib-prefix.m4
 
diff --git a/aclocal.m4 b/aclocal.m4
index 705b6d91..2c0b0ed6 100644
--- a/aclocal.m4
+++ b/aclocal.m4
@@ -12,6 +12,7 @@
 # PARTICULAR PURPOSE.
 
 m4_include([m4/codeset.m4])
+m4_include([m4/glibc21.m4])
 m4_include([m4/groff.m4])
 m4_include([m4/iconv.m4])
 m4_include([m4/lib-ld.m4])
diff --git a/configure b/configure
index deaee51b..ae737aaa 100755
--- a/configure
+++ b/configure
@@ -540,7 +540,7 @@ ac_includes_default="\
 # include <unistd.h>
 #endif"
 
-ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC EXEEXT OBJEXT CXX CXXFLAGS ac_ct_CXX TTYDEVDIRS OTHERDEVDIRS CPP X_CFLAGS X_PRE_LIBS X_LIBS X_EXTRA_LIBS XDEVDIRS XPROGDIRS XLIBDIRS appresdir LPR LP LPQ PSPRINT DVIPRINT PERLPATH YACC MAKEINFO RANLIB ac_ct_RANLIB INSTALL_INFO INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA LN_S SH_SCRIPT_SED_CMD GREP EGREP LIBC LIBM build build_cpu build_vendor build_os host host_cpu host_vendor host_os LIBICONV LTLIBICONV LIBOBJS BROKEN_SPOOLER_FLAGS PAGE g sys_tmac_prefix tmac_wrap GROFF_PATH_SEPARATOR ALT_GHOSTSCRIPT_PROGS GHOSTSCRIPT ac_ct_GHOSTSCRIPT pnmcut pnmcrop pnmtopng psselect pnmtops make_html make_install_html ALT_AWK_PROGS AWK ac_ct_AWK make_pdfdoc make_install_pdfdoc pnmtops_nosetpage LTLIBOBJS'
+ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS CC CFLAGS LDFLAGS CPPFLAGS ac_ct_CC EXEEXT OBJEXT CXX CXXFLAGS ac_ct_CXX TTYDEVDIRS OTHERDEVDIRS CPP X_CFLAGS X_PRE_LIBS X_LIBS X_EXTRA_LIBS XDEVDIRS XPROGDIRS XLIBDIRS appresdir LPR LP LPQ PSPRINT DVIPRINT PERLPATH YACC MAKEINFO RANLIB ac_ct_RANLIB INSTALL_INFO INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA LN_S SH_SCRIPT_SED_CMD GREP EGREP LIBC LIBM build build_cpu build_vendor build_os host host_cpu host_vendor host_os LIBICONV LTLIBICONV LIBOBJS BROKEN_SPOOLER_FLAGS PAGE g sys_tmac_prefix tmac_wrap GROFF_PATH_SEPARATOR ALT_GHOSTSCRIPT_PROGS GHOSTSCRIPT ac_ct_GHOSTSCRIPT pnmcut pnmcrop pnmtopng psselect pnmtops make_html make_install_html ALT_AWK_PROGS AWK ac_ct_AWK make_pdfdoc make_install_pdfdoc pnmtops_nosetpage GLIBC21 LTLIBOBJS'
 ac_subst_files=''
 
 # Initialize some variables set by options.
@@ -6296,7 +6296,8 @@ done
 
 
 
-for ac_header in stdlib.h unistd.h dirent.h limits.h sys/dir.h \
+
+for ac_header in stddef.h stdlib.h unistd.h dirent.h limits.h sys/dir.h \
                   string.h strings.h math.h sys/time.h direct.h process.h
 do
 as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
@@ -11721,6 +11722,44 @@ echo "${ECHO_T}no" >&6
    fi
 
 
+    echo "$as_me:$LINENO: checking whether we are using the GNU C Library 2.1 or newer" >&5
+echo $ECHO_N "checking whether we are using the GNU C Library 2.1 or newer... $ECHO_C" >&6
+if test "${ac_cv_gnu_library_2_1+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+#include <features.h>
+#ifdef __GNU_LIBRARY__
+ #if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) || (__GLIBC__ > 2)
+  Lucky GNU user
+ #endif
+#endif
+
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+  $EGREP "Lucky GNU user" >/dev/null 2>&1; then
+  ac_cv_gnu_library_2_1=yes
+else
+  ac_cv_gnu_library_2_1=no
+fi
+rm -f conftest*
+
+
+
+fi
+echo "$as_me:$LINENO: result: $ac_cv_gnu_library_2_1" >&5
+echo "${ECHO_T}$ac_cv_gnu_library_2_1" >&6
+
+    GLIBC21="$ac_cv_gnu_library_2_1"
+
+
+
           ac_config_files="$ac_config_files stamp-h"
 
                               ac_config_files="$ac_config_files Makefile doc/Makefile src/utils/xtotroff/Makefile"
@@ -12406,6 +12445,7 @@ s,@ac_ct_AWK@,$ac_ct_AWK,;t t
 s,@make_pdfdoc@,$make_pdfdoc,;t t
 s,@make_install_pdfdoc@,$make_install_pdfdoc,;t t
 s,@pnmtops_nosetpage@,$pnmtops_nosetpage,;t t
+s,@GLIBC21@,$GLIBC21,;t t
 s,@LTLIBOBJS@,$LTLIBOBJS,;t t
 CEOF
 
diff --git a/configure.ac b/configure.ac
index beaaba8b..36e120dd 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,5 +1,5 @@
 # Autoconf configuration file for groff.
-# Copyright (C) 1989-1995, 2001, 2002, 2003, 2004, 2005
+# Copyright (C) 1989-1995, 2001, 2002, 2003, 2004, 2005, 2006
 # Free Software Foundation, Inc.
 #
 # This file is part of groff.
@@ -51,7 +51,7 @@ GROFF_CSH_HACK([SH_SCRIPT_SED_CMD='1s/.*/:/'], [SH_SCRIPT_SED_CMD='1s/a/a/'])
 AC_SUBST([SH_SCRIPT_SED_CMD])
 
 # checks for headers
-AC_CHECK_HEADERS([stdlib.h unistd.h dirent.h limits.h sys/dir.h \
+AC_CHECK_HEADERS([stddef.h stdlib.h unistd.h dirent.h limits.h sys/dir.h \
                   string.h strings.h math.h sys/time.h direct.h process.h])
 GROFF_ISC_SYSV3
 GROFF_POSIX
@@ -121,6 +121,7 @@ GROFF_TARGET_PATH_SEPARATOR
 GROFF_HTML_PROGRAMS
 GROFF_PDFDOC_PROGRAMS
 GROFF_PNMTOPS_NOSETPAGE
+jm_GLIBC21
 
 AC_CONFIG_FILES([stamp-h], [echo timestamp > stamp-h])
 AC_CONFIG_FILES([Makefile doc/Makefile src/utils/xtotroff/Makefile])
diff --git a/m4/glibc21.m4 b/m4/glibc21.m4
new file mode 100644
index 00000000..9c9f3db3
--- /dev/null
+++ b/m4/glibc21.m4
@@ -0,0 +1,32 @@
+# glibc21.m4 serial 2 (fileutils-4.1.3, gettext-0.10.40)
+dnl Copyright (C) 2000-2002 Free Software Foundation, Inc.
+dnl This file is free software, distributed under the terms of the GNU
+dnl General Public License.  As a special exception to the GNU General
+dnl Public License, this file may be distributed as part of a program
+dnl that contains a configuration script generated by Autoconf, under
+dnl the same distribution terms as the rest of that program.
+
+# Test for the GNU C Library, version 2.1 or newer.
+# From Bruno Haible.
+
+AC_DEFUN([jm_GLIBC21],
+  [
+    AC_CACHE_CHECK(whether we are using the GNU C Library 2.1 or newer,
+      ac_cv_gnu_library_2_1,
+      [AC_EGREP_CPP([Lucky GNU user],
+	[
+#include <features.h>
+#ifdef __GNU_LIBRARY__
+ #if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) || (__GLIBC__ > 2)
+  Lucky GNU user
+ #endif
+#endif
+	],
+	ac_cv_gnu_library_2_1=yes,
+	ac_cv_gnu_library_2_1=no)
+      ]
+    )
+    AC_SUBST(GLIBC21)
+    GLIBC21="$ac_cv_gnu_library_2_1"
+  ]
+)
diff --git a/src/include/config.hin b/src/include/config.hin
index 9c6d5ee2..72606334 100644
--- a/src/include/config.hin
+++ b/src/include/config.hin
@@ -79,6 +79,9 @@
 /* Define to 1 if you have the `snprintf' function. */
 #undef HAVE_SNPRINTF
 
+/* Define to 1 if you have the <stddef.h> header file. */
+#undef HAVE_STDDEF_H
+
 /* Define to 1 if you have the <stdint.h> header file. */
 #undef HAVE_STDINT_H
 
diff --git a/src/include/localcharset.h b/src/include/localcharset.h
new file mode 100644
index 00000000..129e4a4a
--- /dev/null
+++ b/src/include/localcharset.h
@@ -0,0 +1,42 @@
+/* Determine a canonical name for the current locale's character encoding.
+   Copyright (C) 2000-2003 Free Software Foundation, Inc.
+   This file is part of the GNU CHARSET Library.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU Library General Public License as published
+   by the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+   USA.  */
+
+#ifndef _LOCALCHARSET_H
+#define _LOCALCHARSET_H
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/* Determine the current locale's character encoding, and canonicalize it
+   into one of the canonical names listed in config.charset.
+   The result must not be freed; it is statically allocated.
+   If the canonical name cannot be determined, the result is a non-canonical
+   name.  */
+extern const char * locale_charset (void);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+
+#endif /* _LOCALCHARSET_H */
diff --git a/src/include/relocate.h b/src/include/relocate.h
index 0d9edc4c..51f48950 100644
--- a/src/include/relocate.h
+++ b/src/include/relocate.h
@@ -1,6 +1,5 @@
-// -*- C++ -*-
 /* Provide relocation for macro and font files.
-   Copyright (C) 2005 Free Software Foundation, Inc.
+   Copyright (C) 2005-2006 Free Software Foundation, Inc.
 
    This program is free software; you can redistribute it and/or modify it
    under the terms of the GNU Library General Public License as published
@@ -17,11 +16,22 @@
    Foundation, Inc., 51 Franklin St - Fifth Floor, Boston, MA 02110-1301,
    USA.  */
 
+#ifdef __cplusplus
 extern char *curr_prefix;
 extern size_t curr_prefix_len;
 
 void set_current_prefix ();
 char *xdirname (char *s);
 char *searchpath (const char *name, const char *pathp);
+#endif
+
+/* This function has C linkage.  */
+extern
+#ifdef __cplusplus
+"C"
+#endif
 char *relocatep (const char *path);
+
+#ifdef __cplusplus
 char *relocate (const char *path);
+#endif
diff --git a/src/libs/libgroff/Makefile.sub b/src/libs/libgroff/Makefile.sub
index e7606a82..1b55fdb0 100644
--- a/src/libs/libgroff/Makefile.sub
+++ b/src/libs/libgroff/Makefile.sub
@@ -1,5 +1,5 @@
 LIB=groff
-EXTRA_CFLAGS=-D__GETOPT_PREFIX=groff_
+EXTRA_CFLAGS=-D__GETOPT_PREFIX=groff_ -DLIBDIR=\"$(libdir)\"
 OBJS=\
   assert.$(OBJEXT) \
   change_lf.$(OBJEXT) \
@@ -24,6 +24,7 @@ OBJS=\
   itoa.$(OBJEXT) \
   lf.$(OBJEXT) \
   lineno.$(OBJEXT) \
+  localcharset.$(OBJEXT) \
   macropath.$(OBJEXT) \
   matherr.$(OBJEXT) \
   maxfilename.$(OBJEXT) \
@@ -97,6 +98,7 @@ CSRCS=\
   $(srcdir)/getopt1.c \
   $(srcdir)/iftoa.c \
   $(srcdir)/itoa.c \
+  $(srcdir)/localcharset.c \
   $(srcdir)/matherr.c \
   $(srcdir)/progname.c \
   $(srcdir)/putenv.c \
@@ -124,3 +126,63 @@ version.cpp: $(top_srcdir)/VERSION $(top_srcdir)/REVISION
 snprintf.$(OBJEXT): $(srcdir)/../snprintf/snprintf.c
 	$(CC) -c $(CDEFINES) $(CFLAGS) $(CPPFLAGS) \
 	  $(srcdir)/../snprintf/snprintf.c
+
+# Data for localcharset.c.  Taken from libiconv/libcharset.
+
+all: charset.alias ref-add.sed ref-del.sed
+
+charset.alias: $(srcdir)/config.charset
+	$(SHELL) $(srcdir)/config.charset '$(HOST)' > t-$@
+	mv t-$@ $@
+
+PACKAGE=groff
+
+ref-add.sed : $(srcdir)/ref-add.sin
+	sed -e '/^#/d' \
+	    -e 's/@''PACKAGE''@/$(PACKAGE)/g' $(srcdir)/ref-add.sin > t-$@
+	mv t-$@ $@
+
+ref-del.sed : $(srcdir)/ref-del.sin
+	sed -e '/^#/d' \
+	    -e 's/@''PACKAGE''@/$(PACKAGE)/g' $(srcdir)/ref-del.sin > t-$@
+	mv t-$@ $@
+
+MKINSTALLDIRS = $(SHELL) $(top_srcdir)/mkinstalldirs
+
+install_data: install_charset_data
+install_charset_data:
+	test $(GLIBC21) != no || $(MKINSTALLDIRS) $(DESTDIR)$(libdir)
+	if test -f $(DESTDIR)$(libdir)/charset.alias; then \
+	  sed -f ref-add.sed $(DESTDIR)$(libdir)/charset.alias \
+	      > $(DESTDIR)$(libdir)/t-charset.alias; \
+	  $(INSTALL_DATA) $(DESTDIR)$(libdir)/t-charset.alias \
+	                  $(DESTDIR)$(libdir)/charset.alias; \
+	  rm -f $(DESTDIR)$(libdir)/t-charset.alias; \
+	else \
+	  if test $(GLIBC21) = no; then \
+	    sed -f ref-add.sed charset.alias \
+	        > $(DESTDIR)$(libdir)/t-charset.alias; \
+	    $(INSTALL_DATA) $(DESTDIR)$(libdir)/t-charset.alias \
+	                    $(DESTDIR)$(libdir)/charset.alias; \
+	    rm -f $(DESTDIR)$(libdir)/t-charset.alias; \
+	  fi; \
+	fi
+
+uninstall_sub: uninstall_charset_data
+uninstall_charset_data:
+	if test -f $(DESTDIR)$(libdir)/charset.alias; then \
+	  sed -f ref-del.sed $(DESTDIR)$(libdir)/charset.alias \
+	      > $(DESTDIR)$(libdir)/t-charset.alias; \
+	  if grep '^# Packages using this file: $$' \
+	          $(DESTDIR)$(libdir)/t-charset.alias > /dev/null; then \
+	    rm -f $(DESTDIR)$(libdir)/charset.alias; \
+	  else \
+	    $(INSTALL_DATA) $(DESTDIR)$(libdir)/t-charset.alias \
+	                    $(DESTDIR)$(libdir)/charset.alias; \
+	  fi; \
+	  rm -f $(DESTDIR)$(libdir)/t-charset.alias; \
+	fi
+
+clean: clean_charset
+clean_charset:
+	rm -f charset.alias ref-add.sed ref-del.sed
diff --git a/src/libs/libgroff/config.charset b/src/libs/libgroff/config.charset
new file mode 100755
index 00000000..9090c803
--- /dev/null
+++ b/src/libs/libgroff/config.charset
@@ -0,0 +1,638 @@
+#! /bin/sh
+# Output a system dependent table of character encoding aliases.
+#
+#   Copyright (C) 2000-2004 Free Software Foundation, Inc.
+#
+#   This program is free software; you can redistribute it and/or modify it
+#   under the terms of the GNU Library General Public License as published
+#   by the Free Software Foundation; either version 2, or (at your option)
+#   any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+#   Library General Public License for more details.
+#
+#   You should have received a copy of the GNU Library General Public
+#   License along with this program; if not, write to the Free Software
+#   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+#   USA.
+#
+# The table consists of lines of the form
+#    ALIAS  CANONICAL
+#
+# ALIAS is the (system dependent) result of "nl_langinfo (CODESET)".
+# ALIAS is compared in a case sensitive way.
+#
+# CANONICAL is the GNU canonical name for this character encoding.
+# It must be an encoding supported by libiconv. Support by GNU libc is
+# also desirable. CANONICAL is case insensitive. Usually an upper case
+# MIME charset name is preferred.
+# The current list of GNU canonical charset names is as follows.
+#
+#       name              MIME?             used by which systems
+#   ASCII, ANSI_X3.4-1968       glibc solaris freebsd darwin
+#   ISO-8859-1              Y   glibc aix hpux irix osf solaris freebsd darwin
+#   ISO-8859-2              Y   glibc aix hpux irix osf solaris freebsd darwin
+#   ISO-8859-3              Y   glibc solaris
+#   ISO-8859-4              Y   osf solaris freebsd darwin
+#   ISO-8859-5              Y   glibc aix hpux irix osf solaris freebsd darwin
+#   ISO-8859-6              Y   glibc aix hpux solaris
+#   ISO-8859-7              Y   glibc aix hpux irix osf solaris darwin
+#   ISO-8859-8              Y   glibc aix hpux osf solaris
+#   ISO-8859-9              Y   glibc aix hpux irix osf solaris darwin
+#   ISO-8859-13                 glibc darwin
+#   ISO-8859-14                 glibc
+#   ISO-8859-15                 glibc aix osf solaris freebsd darwin
+#   KOI8-R                  Y   glibc solaris freebsd darwin
+#   KOI8-U                  Y   glibc freebsd darwin
+#   KOI8-T                      glibc
+#   CP437                       dos
+#   CP775                       dos
+#   CP850                       aix osf dos
+#   CP852                       dos
+#   CP855                       dos
+#   CP856                       aix
+#   CP857                       dos
+#   CP861                       dos
+#   CP862                       dos
+#   CP864                       dos
+#   CP865                       dos
+#   CP866                       freebsd darwin dos
+#   CP869                       dos
+#   CP874                       woe32 dos
+#   CP922                       aix
+#   CP932                       aix woe32 dos
+#   CP943                       aix
+#   CP949                       osf woe32 dos
+#   CP950                       woe32 dos
+#   CP1046                      aix
+#   CP1124                      aix
+#   CP1125                      dos
+#   CP1129                      aix
+#   CP1250                      woe32
+#   CP1251                      glibc solaris darwin woe32
+#   CP1252                      aix woe32
+#   CP1253                      woe32
+#   CP1254                      woe32
+#   CP1255                      glibc woe32
+#   CP1256                      woe32
+#   CP1257                      woe32
+#   GB2312                  Y   glibc aix hpux irix solaris freebsd darwin
+#   EUC-JP                  Y   glibc aix hpux irix osf solaris freebsd darwin
+#   EUC-KR                  Y   glibc aix hpux irix osf solaris freebsd darwin
+#   EUC-TW                      glibc aix hpux irix osf solaris
+#   BIG5                    Y   glibc aix hpux osf solaris freebsd darwin
+#   BIG5-HKSCS                  glibc solaris
+#   GBK                         glibc aix osf solaris woe32 dos
+#   GB18030                     glibc solaris
+#   SHIFT_JIS               Y   hpux osf solaris freebsd darwin
+#   JOHAB                       glibc solaris woe32
+#   TIS-620                     glibc aix hpux osf solaris
+#   VISCII                  Y   glibc
+#   TCVN5712-1                  glibc
+#   GEORGIAN-PS                 glibc
+#   HP-ROMAN8                   hpux
+#   HP-ARABIC8                  hpux
+#   HP-GREEK8                   hpux
+#   HP-HEBREW8                  hpux
+#   HP-TURKISH8                 hpux
+#   HP-KANA8                    hpux
+#   DEC-KANJI                   osf
+#   DEC-HANYU                   osf
+#   UTF-8                   Y   glibc aix hpux osf solaris darwin
+#
+# Note: Names which are not marked as being a MIME name should not be used in
+# Internet protocols for information interchange (mail, news, etc.).
+#
+# Note: ASCII and ANSI_X3.4-1968 are synonymous canonical names. Applications
+# must understand both names and treat them as equivalent.
+#
+# The first argument passed to this file is the canonical host specification,
+#    CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM
+# or
+#    CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM
+
+host="$1"
+os=`echo "$host" | sed -e 's/^[^-]*-[^-]*-\(.*\)$/\1/'`
+echo "# This file contains a table of character encoding aliases,"
+echo "# suitable for operating system '${os}'."
+echo "# It was automatically generated from config.charset."
+# List of references, updated during installation:
+echo "# Packages using this file: "
+case "$os" in
+    linux-gnulibc1*)
+	# Linux libc5 doesn't have nl_langinfo(CODESET); therefore
+	# localcharset.c falls back to using the full locale name
+	# from the environment variables.
+	echo "C ASCII"
+	echo "POSIX ASCII"
+	for l in af af_ZA ca ca_ES da da_DK de de_AT de_BE de_CH de_DE de_LU \
+	         en en_AU en_BW en_CA en_DK en_GB en_IE en_NZ en_US en_ZA \
+	         en_ZW es es_AR es_BO es_CL es_CO es_DO es_EC es_ES es_GT \
+	         es_HN es_MX es_PA es_PE es_PY es_SV es_US es_UY es_VE et \
+	         et_EE eu eu_ES fi fi_FI fo fo_FO fr fr_BE fr_CA fr_CH fr_FR \
+	         fr_LU ga ga_IE gl gl_ES id id_ID in in_ID is is_IS it it_CH \
+	         it_IT kl kl_GL nl nl_BE nl_NL no no_NO pt pt_BR pt_PT sv \
+	         sv_FI sv_SE; do
+	  echo "$l ISO-8859-1"
+	  echo "$l.iso-8859-1 ISO-8859-1"
+	  echo "$l.iso-8859-15 ISO-8859-15"
+	  echo "$l.iso-8859-15@euro ISO-8859-15"
+	  echo "$l@euro ISO-8859-15"
+	  echo "$l.cp-437 CP437"
+	  echo "$l.cp-850 CP850"
+	  echo "$l.cp-1252 CP1252"
+	  echo "$l.cp-1252@euro CP1252"
+	  #echo "$l.atari-st ATARI-ST" # not a commonly used encoding
+	  echo "$l.utf-8 UTF-8"
+	  echo "$l.utf-8@euro UTF-8"
+	done
+	for l in cs cs_CZ hr hr_HR hu hu_HU pl pl_PL ro ro_RO sk sk_SK sl \
+	         sl_SI sr sr_CS sr_YU; do
+	  echo "$l ISO-8859-2"
+	  echo "$l.iso-8859-2 ISO-8859-2"
+	  echo "$l.cp-852 CP852"
+	  echo "$l.cp-1250 CP1250"
+	  echo "$l.utf-8 UTF-8"
+	done
+	for l in mk mk_MK ru ru_RU; do
+	  echo "$l ISO-8859-5"
+	  echo "$l.iso-8859-5 ISO-8859-5"
+	  echo "$l.koi8-r KOI8-R"
+	  echo "$l.cp-866 CP866"
+	  echo "$l.cp-1251 CP1251"
+	  echo "$l.utf-8 UTF-8"
+	done
+	for l in ar ar_SA; do
+	  echo "$l ISO-8859-6"
+	  echo "$l.iso-8859-6 ISO-8859-6"
+	  echo "$l.cp-864 CP864"
+	  #echo "$l.cp-868 CP868" # not a commonly used encoding
+	  echo "$l.cp-1256 CP1256"
+	  echo "$l.utf-8 UTF-8"
+	done
+	for l in el el_GR gr gr_GR; do
+	  echo "$l ISO-8859-7"
+	  echo "$l.iso-8859-7 ISO-8859-7"
+	  echo "$l.cp-869 CP869"
+	  echo "$l.cp-1253 CP1253"
+	  echo "$l.cp-1253@euro CP1253"
+	  echo "$l.utf-8 UTF-8"
+	  echo "$l.utf-8@euro UTF-8"
+	done
+	for l in he he_IL iw iw_IL; do
+	  echo "$l ISO-8859-8"
+	  echo "$l.iso-8859-8 ISO-8859-8"
+	  echo "$l.cp-862 CP862"
+	  echo "$l.cp-1255 CP1255"
+	  echo "$l.utf-8 UTF-8"
+	done
+	for l in tr tr_TR; do
+	  echo "$l ISO-8859-9"
+	  echo "$l.iso-8859-9 ISO-8859-9"
+	  echo "$l.cp-857 CP857"
+	  echo "$l.cp-1254 CP1254"
+	  echo "$l.utf-8 UTF-8"
+	done
+	for l in lt lt_LT lv lv_LV; do
+	  #echo "$l BALTIC" # not a commonly used encoding, wrong encoding name
+	  echo "$l ISO-8859-13"
+	done
+	for l in ru_UA uk uk_UA; do
+	  echo "$l KOI8-U"
+	done
+	for l in zh zh_CN; do
+	  #echo "$l GB_2312-80" # not a commonly used encoding, wrong encoding name
+	  echo "$l GB2312"
+	done
+	for l in ja ja_JP ja_JP.EUC; do
+	  echo "$l EUC-JP"
+	done
+	for l in ko ko_KR; do
+	  echo "$l EUC-KR"
+	done
+	for l in th th_TH; do
+	  echo "$l TIS-620"
+	done
+	for l in fa fa_IR; do
+	  #echo "$l ISIRI-3342" # a broken encoding
+	  echo "$l.utf-8 UTF-8"
+	done
+	;;
+    linux* | *-gnu*)
+	# With glibc-2.1 or newer, we don't need any canonicalization,
+	# because glibc has iconv and both glibc and libiconv support all
+	# GNU canonical names directly. Therefore, the Makefile does not
+	# need to install the alias file at all.
+	# The following applies only to glibc-2.0.x and older libcs.
+	echo "ISO_646.IRV:1983 ASCII"
+	;;
+    aix*)
+	echo "ISO8859-1 ISO-8859-1"
+	echo "ISO8859-2 ISO-8859-2"
+	echo "ISO8859-5 ISO-8859-5"
+	echo "ISO8859-6 ISO-8859-6"
+	echo "ISO8859-7 ISO-8859-7"
+	echo "ISO8859-8 ISO-8859-8"
+	echo "ISO8859-9 ISO-8859-9"
+	echo "ISO8859-15 ISO-8859-15"
+	echo "IBM-850 CP850"
+	echo "IBM-856 CP856"
+	echo "IBM-921 ISO-8859-13"
+	echo "IBM-922 CP922"
+	echo "IBM-932 CP932"
+	echo "IBM-943 CP943"
+	echo "IBM-1046 CP1046"
+	echo "IBM-1124 CP1124"
+	echo "IBM-1129 CP1129"
+	echo "IBM-1252 CP1252"
+	echo "IBM-eucCN GB2312"
+	echo "IBM-eucJP EUC-JP"
+	echo "IBM-eucKR EUC-KR"
+	echo "IBM-eucTW EUC-TW"
+	echo "big5 BIG5"
+	echo "GBK GBK"
+	echo "TIS-620 TIS-620"
+	echo "UTF-8 UTF-8"
+	;;
+    hpux*)
+	echo "iso88591 ISO-8859-1"
+	echo "iso88592 ISO-8859-2"
+	echo "iso88595 ISO-8859-5"
+	echo "iso88596 ISO-8859-6"
+	echo "iso88597 ISO-8859-7"
+	echo "iso88598 ISO-8859-8"
+	echo "iso88599 ISO-8859-9"
+	echo "iso885915 ISO-8859-15"
+	echo "roman8 HP-ROMAN8"
+	echo "arabic8 HP-ARABIC8"
+	echo "greek8 HP-GREEK8"
+	echo "hebrew8 HP-HEBREW8"
+	echo "turkish8 HP-TURKISH8"
+	echo "kana8 HP-KANA8"
+	echo "tis620 TIS-620"
+	echo "big5 BIG5"
+	echo "eucJP EUC-JP"
+	echo "eucKR EUC-KR"
+	echo "eucTW EUC-TW"
+	echo "hp15CN GB2312"
+	#echo "ccdc ?" # what is this?
+	echo "SJIS SHIFT_JIS"
+	echo "utf8 UTF-8"
+	;;
+    irix*)
+	echo "ISO8859-1 ISO-8859-1"
+	echo "ISO8859-2 ISO-8859-2"
+	echo "ISO8859-5 ISO-8859-5"
+	echo "ISO8859-7 ISO-8859-7"
+	echo "ISO8859-9 ISO-8859-9"
+	echo "eucCN GB2312"
+	echo "eucJP EUC-JP"
+	echo "eucKR EUC-KR"
+	echo "eucTW EUC-TW"
+	;;
+    osf*)
+	echo "ISO8859-1 ISO-8859-1"
+	echo "ISO8859-2 ISO-8859-2"
+	echo "ISO8859-4 ISO-8859-4"
+	echo "ISO8859-5 ISO-8859-5"
+	echo "ISO8859-7 ISO-8859-7"
+	echo "ISO8859-8 ISO-8859-8"
+	echo "ISO8859-9 ISO-8859-9"
+	echo "ISO8859-15 ISO-8859-15"
+	echo "cp850 CP850"
+	echo "big5 BIG5"
+	echo "dechanyu DEC-HANYU"
+	echo "dechanzi GB2312"
+	echo "deckanji DEC-KANJI"
+	echo "deckorean EUC-KR"
+	echo "eucJP EUC-JP"
+	echo "eucKR EUC-KR"
+	echo "eucTW EUC-TW"
+	echo "GBK GBK"
+	echo "KSC5601 CP949"
+	echo "sdeckanji EUC-JP"
+	echo "SJIS SHIFT_JIS"
+	echo "TACTIS TIS-620"
+	echo "UTF-8 UTF-8"
+	;;
+    solaris*)
+	echo "646 ASCII"
+	echo "ISO8859-1 ISO-8859-1"
+	echo "ISO8859-2 ISO-8859-2"
+	echo "ISO8859-3 ISO-8859-3"
+	echo "ISO8859-4 ISO-8859-4"
+	echo "ISO8859-5 ISO-8859-5"
+	echo "ISO8859-6 ISO-8859-6"
+	echo "ISO8859-7 ISO-8859-7"
+	echo "ISO8859-8 ISO-8859-8"
+	echo "ISO8859-9 ISO-8859-9"
+	echo "ISO8859-15 ISO-8859-15"
+	echo "koi8-r KOI8-R"
+	echo "ansi-1251 CP1251"
+	echo "BIG5 BIG5"
+	echo "Big5-HKSCS BIG5-HKSCS"
+	echo "gb2312 GB2312"
+	echo "GBK GBK"
+	echo "GB18030 GB18030"
+	echo "cns11643 EUC-TW"
+	echo "5601 EUC-KR"
+	echo "ko_KR.johap92 JOHAB"
+	echo "eucJP EUC-JP"
+	echo "PCK SHIFT_JIS"
+	echo "TIS620.2533 TIS-620"
+	#echo "sun_eu_greek ?" # what is this?
+	echo "UTF-8 UTF-8"
+	;;
+    freebsd* | os2*)
+	# FreeBSD 4.2 doesn't have nl_langinfo(CODESET); therefore
+	# localcharset.c falls back to using the full locale name
+	# from the environment variables.
+	# Likewise for OS/2. OS/2 has XFree86 just like FreeBSD. Just
+	# reuse FreeBSD's locale data for OS/2.
+	echo "C ASCII"
+	echo "US-ASCII ASCII"
+	for l in la_LN lt_LN; do
+	  echo "$l.ASCII ASCII"
+	done
+	for l in da_DK de_AT de_CH de_DE en_AU en_CA en_GB en_US es_ES \
+	         fi_FI fr_BE fr_CA fr_CH fr_FR is_IS it_CH it_IT la_LN \
+	         lt_LN nl_BE nl_NL no_NO pt_PT sv_SE; do
+	  echo "$l.ISO_8859-1 ISO-8859-1"
+	  echo "$l.DIS_8859-15 ISO-8859-15"
+	done
+	for l in cs_CZ hr_HR hu_HU la_LN lt_LN pl_PL sl_SI; do
+	  echo "$l.ISO_8859-2 ISO-8859-2"
+	done
+	for l in la_LN lt_LT; do
+	  echo "$l.ISO_8859-4 ISO-8859-4"
+	done
+	for l in ru_RU ru_SU; do
+	  echo "$l.KOI8-R KOI8-R"
+	  echo "$l.ISO_8859-5 ISO-8859-5"
+	  echo "$l.CP866 CP866"
+	done
+	echo "uk_UA.KOI8-U KOI8-U"
+	echo "zh_TW.BIG5 BIG5"
+	echo "zh_TW.Big5 BIG5"
+	echo "zh_CN.EUC GB2312"
+	echo "ja_JP.EUC EUC-JP"
+	echo "ja_JP.SJIS SHIFT_JIS"
+	echo "ja_JP.Shift_JIS SHIFT_JIS"
+	echo "ko_KR.EUC EUC-KR"
+	;;
+    netbsd*)
+	echo "646 ASCII"
+	echo "ISO8859-1 ISO-8859-1"
+	echo "ISO8859-2 ISO-8859-2"
+	echo "ISO8859-4 ISO-8859-4"
+	echo "ISO8859-5 ISO-8859-5"
+	echo "ISO8859-15 ISO-8859-15"
+	echo "eucCN GB2312"
+	echo "eucJP EUC-JP"
+	echo "eucKR EUC-KR"
+	echo "eucTW EUC-TW"
+	echo "BIG5 BIG5"
+	echo "SJIS SHIFT_JIS"
+	;;
+    darwin[56]*)
+	# Darwin 6.8 doesn't have nl_langinfo(CODESET); therefore
+	# localcharset.c falls back to using the full locale name
+	# from the environment variables.
+	echo "C ASCII"
+	for l in en_AU en_CA en_GB en_US la_LN; do
+	  echo "$l.US-ASCII ASCII"
+	done
+	for l in da_DK de_AT de_CH de_DE en_AU en_CA en_GB en_US es_ES \
+	         fi_FI fr_BE fr_CA fr_CH fr_FR is_IS it_CH it_IT nl_BE \
+	         nl_NL no_NO pt_PT sv_SE; do
+	  echo "$l ISO-8859-1"
+	  echo "$l.ISO8859-1 ISO-8859-1"
+	  echo "$l.ISO8859-15 ISO-8859-15"
+	done
+	for l in la_LN; do
+	  echo "$l.ISO8859-1 ISO-8859-1"
+	  echo "$l.ISO8859-15 ISO-8859-15"
+	done
+	for l in cs_CZ hr_HR hu_HU la_LN pl_PL sl_SI; do
+	  echo "$l.ISO8859-2 ISO-8859-2"
+	done
+	for l in la_LN lt_LT; do
+	  echo "$l.ISO8859-4 ISO-8859-4"
+	done
+	for l in ru_RU; do
+	  echo "$l.KOI8-R KOI8-R"
+	  echo "$l.ISO8859-5 ISO-8859-5"
+	  echo "$l.CP866 CP866"
+	done
+	for l in bg_BG; do
+	  echo "$l.CP1251 CP1251"
+	done
+	echo "uk_UA.KOI8-U KOI8-U"
+	echo "zh_TW.BIG5 BIG5"
+	echo "zh_TW.Big5 BIG5"
+	echo "zh_CN.EUC GB2312"
+	echo "ja_JP.EUC EUC-JP"
+	echo "ja_JP.SJIS SHIFT_JIS"
+	echo "ko_KR.EUC EUC-KR"
+	;;
+    darwin*)
+	# Darwin 7.5 has nl_langinfo(CODESET), but it is useless:
+	# - It returns the empty string when LANG is set to a locale of the
+	#   form ll_CC, although ll_CC/LC_CTYPE is a symlink to an UTF-8
+	#   LC_CTYPE file.
+	# - The environment variables LANG, LC_CTYPE, LC_ALL are not set by
+	#   the system; nl_langinfo(CODESET) returns "US-ASCII" in this case.
+	# - The documentation says:
+	#     "... all code that calls BSD system routines should ensure
+	#      that the const *char parameters of these routines are in UTF-8
+	#      encoding. All BSD system functions expect their string
+	#      parameters to be in UTF-8 encoding and nothing else."
+	#   It also says
+	#     "An additional caveat is that string parameters for files,
+	#      paths, and other file-system entities must be in canonical
+	#      UTF-8. In a canonical UTF-8 Unicode string, all decomposable
+	#      characters are decomposed ..."
+	#   but this is not true: You can pass non-decomposed UTF-8 strings
+	#   to file system functions, and it is the OS which will convert
+	#   them to decomposed UTF-8 before accessing the file system.
+	# - The Apple Terminal application displays UTF-8 by default.
+	# - However, other applications are free to use different encodings:
+	#   - xterm uses ISO-8859-1 by default.
+	#   - TextEdit uses MacRoman by default.
+	# We prefer UTF-8 over decomposed UTF-8-MAC because one should
+	# minimize the use of decomposed Unicode. Unfortunately, through the
+	# Darwin file system, decomposed UTF-8 strings are leaked into user
+	# space nevertheless.
+	echo "* UTF-8"
+	;;
+    beos*)
+	# BeOS has a single locale, and it has UTF-8 encoding.
+	echo "* UTF-8"
+	;;
+    msdosdjgpp*)
+	# DJGPP 2.03 doesn't have nl_langinfo(CODESET); therefore
+	# localcharset.c falls back to using the full locale name
+	# from the environment variables.
+	echo "#"
+	echo "# The encodings given here may not all be correct."
+	echo "# If you find that the encoding given for your language and"
+	echo "# country is not the one your DOS machine actually uses, just"
+	echo "# correct it in this file, and send a mail to"
+	echo "# Juan Manuel Guerrero <st001906@hrz1.hrz.tu-darmstadt.de>"
+	echo "# and Bruno Haible <bruno@clisp.org>."
+	echo "#"
+	echo "C ASCII"
+	# ISO-8859-1 languages
+	echo "ca CP850"
+	echo "ca_ES CP850"
+	echo "da CP865"    # not CP850 ??
+	echo "da_DK CP865" # not CP850 ??
+	echo "de CP850"
+	echo "de_AT CP850"
+	echo "de_CH CP850"
+	echo "de_DE CP850"
+	echo "en CP850"
+	echo "en_AU CP850" # not CP437 ??
+	echo "en_CA CP850"
+	echo "en_GB CP850"
+	echo "en_NZ CP437"
+	echo "en_US CP437"
+	echo "en_ZA CP850" # not CP437 ??
+	echo "es CP850"
+	echo "es_AR CP850"
+	echo "es_BO CP850"
+	echo "es_CL CP850"
+	echo "es_CO CP850"
+	echo "es_CR CP850"
+	echo "es_CU CP850"
+	echo "es_DO CP850"
+	echo "es_EC CP850"
+	echo "es_ES CP850"
+	echo "es_GT CP850"
+	echo "es_HN CP850"
+	echo "es_MX CP850"
+	echo "es_NI CP850"
+	echo "es_PA CP850"
+	echo "es_PY CP850"
+	echo "es_PE CP850"
+	echo "es_SV CP850"
+	echo "es_UY CP850"
+	echo "es_VE CP850"
+	echo "et CP850"
+	echo "et_EE CP850"
+	echo "eu CP850"
+	echo "eu_ES CP850"
+	echo "fi CP850"
+	echo "fi_FI CP850"
+	echo "fr CP850"
+	echo "fr_BE CP850"
+	echo "fr_CA CP850"
+	echo "fr_CH CP850"
+	echo "fr_FR CP850"
+	echo "ga CP850"
+	echo "ga_IE CP850"
+	echo "gd CP850"
+	echo "gd_GB CP850"
+	echo "gl CP850"
+	echo "gl_ES CP850"
+	echo "id CP850"    # not CP437 ??
+	echo "id_ID CP850" # not CP437 ??
+	echo "is CP861"    # not CP850 ??
+	echo "is_IS CP861" # not CP850 ??
+	echo "it CP850"
+	echo "it_CH CP850"
+	echo "it_IT CP850"
+	echo "lt CP775"
+	echo "lt_LT CP775"
+	echo "lv CP775"
+	echo "lv_LV CP775"
+	echo "nb CP865"    # not CP850 ??
+	echo "nb_NO CP865" # not CP850 ??
+	echo "nl CP850"
+	echo "nl_BE CP850"
+	echo "nl_NL CP850"
+	echo "nn CP865"    # not CP850 ??
+	echo "nn_NO CP865" # not CP850 ??
+	echo "no CP865"    # not CP850 ??
+	echo "no_NO CP865" # not CP850 ??
+	echo "pt CP850"
+	echo "pt_BR CP850"
+	echo "pt_PT CP850"
+	echo "sv CP850"
+	echo "sv_SE CP850"
+	# ISO-8859-2 languages
+	echo "cs CP852"
+	echo "cs_CZ CP852"
+	echo "hr CP852"
+	echo "hr_HR CP852"
+	echo "hu CP852"
+	echo "hu_HU CP852"
+	echo "pl CP852"
+	echo "pl_PL CP852"
+	echo "ro CP852"
+	echo "ro_RO CP852"
+	echo "sk CP852"
+	echo "sk_SK CP852"
+	echo "sl CP852"
+	echo "sl_SI CP852"
+	echo "sq CP852"
+	echo "sq_AL CP852"
+	echo "sr CP852"    # CP852 or CP866 or CP855 ??
+	echo "sr_CS CP852" # CP852 or CP866 or CP855 ??
+	echo "sr_YU CP852" # CP852 or CP866 or CP855 ??
+	# ISO-8859-3 languages
+	echo "mt CP850"
+	echo "mt_MT CP850"
+	# ISO-8859-5 languages
+	echo "be CP866"
+	echo "be_BE CP866"
+	echo "bg CP866"    # not CP855 ??
+	echo "bg_BG CP866" # not CP855 ??
+	echo "mk CP866"    # not CP855 ??
+	echo "mk_MK CP866" # not CP855 ??
+	echo "ru CP866"
+	echo "ru_RU CP866"
+	echo "uk CP1125"
+	echo "uk_UA CP1125"
+	# ISO-8859-6 languages
+	echo "ar CP864"
+	echo "ar_AE CP864"
+	echo "ar_DZ CP864"
+	echo "ar_EG CP864"
+	echo "ar_IQ CP864"
+	echo "ar_IR CP864"
+	echo "ar_JO CP864"
+	echo "ar_KW CP864"
+	echo "ar_MA CP864"
+	echo "ar_OM CP864"
+	echo "ar_QA CP864"
+	echo "ar_SA CP864"
+	echo "ar_SY CP864"
+	# ISO-8859-7 languages
+	echo "el CP869"
+	echo "el_GR CP869"
+	# ISO-8859-8 languages
+	echo "he CP862"
+	echo "he_IL CP862"
+	# ISO-8859-9 languages
+	echo "tr CP857"
+	echo "tr_TR CP857"
+	# Japanese
+	echo "ja CP932"
+	echo "ja_JP CP932"
+	# Chinese
+	echo "zh_CN GBK"
+	echo "zh_TW CP950" # not CP938 ??
+	# Korean
+	echo "kr CP949"    # not CP934 ??
+	echo "kr_KR CP949" # not CP934 ??
+	# Thai
+	echo "th CP874"
+	echo "th_TH CP874"
+	# Other
+	echo "eo CP850"
+	echo "eo_EO CP850"
+	;;
+esac
diff --git a/src/libs/libgroff/localcharset.c b/src/libs/libgroff/localcharset.c
new file mode 100644
index 00000000..51af9282
--- /dev/null
+++ b/src/libs/libgroff/localcharset.c
@@ -0,0 +1,416 @@
+/* Determine a canonical name for the current locale's character encoding.
+
+   Copyright (C) 2000-2005 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU Library General Public License as published
+   by the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with this program; if not, write to the Free Software
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+   USA.  */
+
+/* Written by Bruno Haible <bruno@clisp.org>.  */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+/* Specification.  */
+#include "localcharset.h"
+
+#if HAVE_STDDEF_H
+# include <stddef.h>
+#endif
+
+#include <stdio.h>
+#if HAVE_STRING_H
+# include <string.h>
+#else
+# include <strings.h>
+#endif
+#if HAVE_STDLIB_H
+# include <stdlib.h>
+#endif
+
+#if defined _WIN32 || defined __WIN32__
+# undef WIN32   /* avoid warning on mingw32 */
+# define WIN32
+#endif
+
+#if defined __EMX__
+/* Assume EMX program runs on OS/2, even if compiled under DOS.  */
+# define OS2
+#endif
+
+#if !defined WIN32
+# if HAVE_LANGINFO_CODESET
+#  include <langinfo.h>
+# else
+#  if HAVE_SETLOCALE
+#   include <locale.h>
+#  endif
+# endif
+#elif defined WIN32
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+#endif
+#if defined OS2
+# define INCL_DOS
+# include <os2.h>
+#endif
+
+/* BEGIN GROFF-LOCAL SECTION */
+#include "relocate.h"
+#define relocate(path) relocatep(path)
+/* END GROFF-LOCAL SECTION */
+
+#if defined _WIN32 || defined __WIN32__ || defined __CYGWIN__ || defined __EMX__ || defined __DJGPP__
+  /* Win32, Cygwin, OS/2, DOS */
+# define ISSLASH(C) ((C) == '/' || (C) == '\\')
+#endif
+
+#ifndef DIRECTORY_SEPARATOR
+# define DIRECTORY_SEPARATOR '/'
+#endif
+
+#ifndef ISSLASH
+# define ISSLASH(C) ((C) == DIRECTORY_SEPARATOR)
+#endif
+
+#if HAVE_DECL_GETC_UNLOCKED
+# undef getc
+# define getc getc_unlocked
+#endif
+
+/* The following static variable is declared 'volatile' to avoid a
+   possible multithread problem in the function get_charset_aliases. If we
+   are running in a threaded environment, and if two threads initialize
+   'charset_aliases' simultaneously, both will produce the same value,
+   and everything will be ok if the two assignments to 'charset_aliases'
+   are atomic. But I don't know what will happen if the two assignments mix.  */
+#if __STDC__ != 1
+# define volatile /* empty */
+#endif
+/* Pointer to the contents of the charset.alias file, if it has already been
+   read, else NULL.  Its format is:
+   ALIAS_1 '\0' CANONICAL_1 '\0' ... ALIAS_n '\0' CANONICAL_n '\0' '\0'  */
+static const char * volatile charset_aliases;
+
+/* Return a pointer to the contents of the charset.alias file.  */
+static const char *
+get_charset_aliases ()
+{
+  const char *cp;
+
+  cp = charset_aliases;
+  if (cp == NULL)
+    {
+#if !(defined VMS || defined WIN32)
+      FILE *fp;
+      const char *dir;
+      const char *base = "charset.alias";
+      char *file_name;
+
+      /* Make it possible to override the charset.alias location.  This is
+	 necessary for running the testsuite before "make install".  */
+      dir = getenv ("CHARSETALIASDIR");
+      if (dir == NULL || dir[0] == '\0')
+	dir = relocate (LIBDIR);
+
+      /* Concatenate dir and base into freshly allocated file_name.  */
+      {
+	size_t dir_len = strlen (dir);
+	size_t base_len = strlen (base);
+	int add_slash = (dir_len > 0 && !ISSLASH (dir[dir_len - 1]));
+	file_name = (char *) malloc (dir_len + add_slash + base_len + 1);
+	if (file_name != NULL)
+	  {
+	    memcpy (file_name, dir, dir_len);
+	    if (add_slash)
+	      file_name[dir_len] = DIRECTORY_SEPARATOR;
+	    memcpy (file_name + dir_len + add_slash, base, base_len + 1);
+	  }
+      }
+
+      if (file_name == NULL || (fp = fopen (file_name, "r")) == NULL)
+	/* Out of memory or file not found, treat it as empty.  */
+	cp = "";
+      else
+	{
+	  /* Parse the file's contents.  */
+	  char *res_ptr = NULL;
+	  size_t res_size = 0;
+
+	  for (;;)
+	    {
+	      int c;
+	      char buf1[50+1];
+	      char buf2[50+1];
+	      size_t l1, l2;
+	      char *old_res_ptr;
+
+	      c = getc (fp);
+	      if (c == EOF)
+		break;
+	      if (c == '\n' || c == ' ' || c == '\t')
+		continue;
+	      if (c == '#')
+		{
+		  /* Skip comment, to end of line.  */
+		  do
+		    c = getc (fp);
+		  while (!(c == EOF || c == '\n'));
+		  if (c == EOF)
+		    break;
+		  continue;
+		}
+	      ungetc (c, fp);
+	      if (fscanf (fp, "%50s %50s", buf1, buf2) < 2)
+		break;
+	      l1 = strlen (buf1);
+	      l2 = strlen (buf2);
+	      old_res_ptr = res_ptr;
+	      if (res_size == 0)
+		{
+		  res_size = l1 + 1 + l2 + 1;
+		  res_ptr = (char *) malloc (res_size + 1);
+		}
+	      else
+		{
+		  res_size += l1 + 1 + l2 + 1;
+		  res_ptr = (char *) realloc (res_ptr, res_size + 1);
+		}
+	      if (res_ptr == NULL)
+		{
+		  /* Out of memory. */
+		  res_size = 0;
+		  if (old_res_ptr != NULL)
+		    free (old_res_ptr);
+		  break;
+		}
+	      strcpy (res_ptr + res_size - (l2 + 1) - (l1 + 1), buf1);
+	      strcpy (res_ptr + res_size - (l2 + 1), buf2);
+	    }
+	  fclose (fp);
+	  if (res_size == 0)
+	    cp = "";
+	  else
+	    {
+	      *(res_ptr + res_size) = '\0';
+	      cp = res_ptr;
+	    }
+	}
+
+      if (file_name != NULL)
+	free (file_name);
+
+#else
+
+# if defined VMS
+      /* To avoid the troubles of an extra file charset.alias_vms in the
+	 sources of many GNU packages, simply inline the aliases here.  */
+      /* The list of encodings is taken from the OpenVMS 7.3-1 documentation
+	 "Compaq C Run-Time Library Reference Manual for OpenVMS systems"
+	 section 10.7 "Handling Different Character Sets".  */
+      cp = "ISO8859-1" "\0" "ISO-8859-1" "\0"
+	   "ISO8859-2" "\0" "ISO-8859-2" "\0"
+	   "ISO8859-5" "\0" "ISO-8859-5" "\0"
+	   "ISO8859-7" "\0" "ISO-8859-7" "\0"
+	   "ISO8859-8" "\0" "ISO-8859-8" "\0"
+	   "ISO8859-9" "\0" "ISO-8859-9" "\0"
+	   /* Japanese */
+	   "eucJP" "\0" "EUC-JP" "\0"
+	   "SJIS" "\0" "SHIFT_JIS" "\0"
+	   "DECKANJI" "\0" "DEC-KANJI" "\0"
+	   "SDECKANJI" "\0" "EUC-JP" "\0"
+	   /* Chinese */
+	   "eucTW" "\0" "EUC-TW" "\0"
+	   "DECHANYU" "\0" "DEC-HANYU" "\0"
+	   "DECHANZI" "\0" "GB2312" "\0"
+	   /* Korean */
+	   "DECKOREAN" "\0" "EUC-KR" "\0";
+# endif
+
+# if defined WIN32
+      /* To avoid the troubles of installing a separate file in the same
+	 directory as the DLL and of retrieving the DLL's directory at
+	 runtime, simply inline the aliases here.  */
+
+      cp = "CP936" "\0" "GBK" "\0"
+	   "CP1361" "\0" "JOHAB" "\0"
+	   "CP20127" "\0" "ASCII" "\0"
+	   "CP20866" "\0" "KOI8-R" "\0"
+	   "CP20936" "\0" "GB2312" "\0"
+	   "CP21866" "\0" "KOI8-RU" "\0"
+	   "CP28591" "\0" "ISO-8859-1" "\0"
+	   "CP28592" "\0" "ISO-8859-2" "\0"
+	   "CP28593" "\0" "ISO-8859-3" "\0"
+	   "CP28594" "\0" "ISO-8859-4" "\0"
+	   "CP28595" "\0" "ISO-8859-5" "\0"
+	   "CP28596" "\0" "ISO-8859-6" "\0"
+	   "CP28597" "\0" "ISO-8859-7" "\0"
+	   "CP28598" "\0" "ISO-8859-8" "\0"
+	   "CP28599" "\0" "ISO-8859-9" "\0"
+	   "CP28605" "\0" "ISO-8859-15" "\0"
+	   "CP38598" "\0" "ISO-8859-8" "\0"
+	   "CP51932" "\0" "EUC-JP" "\0"
+	   "CP51936" "\0" "GB2312" "\0"
+	   "CP51949" "\0" "EUC-KR" "\0"
+	   "CP51950" "\0" "EUC-TW" "\0"
+	   "CP54936" "\0" "GB18030" "\0"
+	   "CP65001" "\0" "UTF-8" "\0";
+# endif
+#endif
+
+      charset_aliases = cp;
+    }
+
+  return cp;
+}
+
+/* Determine the current locale's character encoding, and canonicalize it
+   into one of the canonical names listed in config.charset.
+   The result must not be freed; it is statically allocated.
+   If the canonical name cannot be determined, the result is a non-canonical
+   name.  */
+
+#ifdef STATIC
+STATIC
+#endif
+const char *
+locale_charset ()
+{
+  const char *codeset;
+  const char *aliases;
+
+#if !(defined WIN32 || defined OS2)
+
+# if HAVE_LANGINFO_CODESET
+
+  /* Most systems support nl_langinfo (CODESET) nowadays.  */
+  codeset = nl_langinfo (CODESET);
+
+# else
+
+  /* On old systems which lack it, use setlocale or getenv.  */
+  const char *locale = NULL;
+
+  /* But most old systems don't have a complete set of locales.  Some
+     (like SunOS 4 or DJGPP) have only the C locale.  Therefore we don't
+     use setlocale here; it would return "C" when it doesn't support the
+     locale name the user has set.  */
+#  if HAVE_SETLOCALE && 0
+  locale = setlocale (LC_CTYPE, NULL);
+#  endif
+  if (locale == NULL || locale[0] == '\0')
+    {
+      locale = getenv ("LC_ALL");
+      if (locale == NULL || locale[0] == '\0')
+	{
+	  locale = getenv ("LC_CTYPE");
+	  if (locale == NULL || locale[0] == '\0')
+	    locale = getenv ("LANG");
+	}
+    }
+
+  /* On some old systems, one used to set locale = "iso8859_1". On others,
+     you set it to "language_COUNTRY.charset". In any case, we resolve it
+     through the charset.alias file.  */
+  codeset = locale;
+
+# endif
+
+#elif defined WIN32
+
+  static char buf[2 + 10 + 1];
+
+  /* Woe32 has a function returning the locale's codepage as a number.  */
+  sprintf (buf, "CP%u", GetACP ());
+  codeset = buf;
+
+#elif defined OS2
+
+  const char *locale;
+  static char buf[2 + 10 + 1];
+  ULONG cp[3];
+  ULONG cplen;
+
+  /* Allow user to override the codeset, as set in the operating system,
+     with standard language environment variables.  */
+  locale = getenv ("LC_ALL");
+  if (locale == NULL || locale[0] == '\0')
+    {
+      locale = getenv ("LC_CTYPE");
+      if (locale == NULL || locale[0] == '\0')
+	locale = getenv ("LANG");
+    }
+  if (locale != NULL && locale[0] != '\0')
+    {
+      /* If the locale name contains an encoding after the dot, return it.  */
+      const char *dot = strchr (locale, '.');
+
+      if (dot != NULL)
+	{
+	  const char *modifier;
+
+	  dot++;
+	  /* Look for the possible @... trailer and remove it, if any.  */
+	  modifier = strchr (dot, '@');
+	  if (modifier == NULL)
+	    return dot;
+	  if (modifier - dot < sizeof (buf))
+	    {
+	      memcpy (buf, dot, modifier - dot);
+	      buf [modifier - dot] = '\0';
+	      return buf;
+	    }
+	}
+
+      /* Resolve through the charset.alias file.  */
+      codeset = locale;
+    }
+  else
+    {
+      /* OS/2 has a function returning the locale's codepage as a number.  */
+      if (DosQueryCp (sizeof (cp), cp, &cplen))
+	codeset = "";
+      else
+	{
+	  sprintf (buf, "CP%u", cp[0]);
+	  codeset = buf;
+	}
+    }
+
+#endif
+
+  if (codeset == NULL)
+    /* The canonical name cannot be determined.  */
+    codeset = "";
+
+  /* Resolve alias. */
+  for (aliases = get_charset_aliases ();
+       *aliases != '\0';
+       aliases += strlen (aliases) + 1, aliases += strlen (aliases) + 1)
+    if (strcmp (codeset, aliases) == 0
+	|| (aliases[0] == '*' && aliases[1] == '\0'))
+      {
+	codeset = aliases + strlen (aliases) + 1;
+	break;
+      }
+
+  /* Don't return an empty string.  GNU libc and GNU libiconv interpret
+     the empty string as denoting "the locale's character encoding",
+     thus GNU libiconv would call this function a second time.  */
+  if (codeset[0] == '\0')
+    codeset = "ASCII";
+
+  return codeset;
+}
diff --git a/src/libs/libgroff/ref-add.sin b/src/libs/libgroff/ref-add.sin
new file mode 100644
index 00000000..0e2b97b0
--- /dev/null
+++ b/src/libs/libgroff/ref-add.sin
@@ -0,0 +1,31 @@
+# Add this package to a list of references stored in a text file.
+#
+#   Copyright (C) 2000 Free Software Foundation, Inc.
+#
+#   This program is free software; you can redistribute it and/or modify it
+#   under the terms of the GNU Library General Public License as published
+#   by the Free Software Foundation; either version 2, or (at your option)
+#   any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+#   Library General Public License for more details.
+#
+#   You should have received a copy of the GNU Library General Public
+#   License along with this program; if not, write to the Free Software
+#   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+#   USA.
+#
+# Written by Bruno Haible <bruno@clisp.org>.
+#
+/^# Packages using this file: / {
+  s/# Packages using this file://
+  ta
+  :a
+  s/ @PACKAGE@ / @PACKAGE@ /
+  tb
+  s/ $/ @PACKAGE@ /
+  :b
+  s/^/# Packages using this file:/
+}
diff --git a/src/libs/libgroff/ref-del.sin b/src/libs/libgroff/ref-del.sin
new file mode 100644
index 00000000..1fafbfc0
--- /dev/null
+++ b/src/libs/libgroff/ref-del.sin
@@ -0,0 +1,26 @@
+# Remove this package from a list of references stored in a text file.
+#
+#   Copyright (C) 2000 Free Software Foundation, Inc.
+#
+#   This program is free software; you can redistribute it and/or modify it
+#   under the terms of the GNU Library General Public License as published
+#   by the Free Software Foundation; either version 2, or (at your option)
+#   any later version.
+#
+#   This program is distributed in the hope that it will be useful,
+#   but WITHOUT ANY WARRANTY; without even the implied warranty of
+#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+#   Library General Public License for more details.
+#
+#   You should have received a copy of the GNU Library General Public
+#   License along with this program; if not, write to the Free Software
+#   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
+#   USA.
+#
+# Written by Bruno Haible <bruno@clisp.org>.
+#
+/^# Packages using this file: / {
+  s/# Packages using this file://
+  s/ @PACKAGE@ / /
+  s/^/# Packages using this file:/
+}
diff --git a/src/preproc/preconv/preconv.cpp b/src/preproc/preconv/preconv.cpp
index 105837b2..190e6e91 100644
--- a/src/preproc/preconv/preconv.cpp
+++ b/src/preproc/preconv/preconv.cpp
@@ -26,15 +26,12 @@ Foundation, 51 Franklin St - Fifth Floor, Boston, MA 02110-1301, USA. */
 #include <errno.h>
 #include "errarg.h"
 #include "error.h"
+#include "localcharset.h"
 #include "nonposix.h"
 #include "stringclass.h"
 
 #include <locale.h>
 
-#if HAVE_LANGINFO_CODESET
-# include <langinfo.h>
-#endif
-
 #if HAVE_ICONV
 # include <iconv.h>
 # ifdef WORDS_BIGENDIAN
@@ -1104,18 +1101,11 @@ main(int argc, char **argv)
   // getopt() is called since the usage message shows the default
   // encoding.
   setlocale(LC_ALL, "");
-#if HAVE_LANGINFO_CODESET
   char *locale = setlocale(LC_CTYPE, NULL);
   if (!locale || !strcmp(locale, "C") || !strcmp(locale, "POSIX"))
     default_encoding = "latin1";
-  else {
-    default_encoding = nl_langinfo(CODESET);
-    if (!default_encoding)
-      default_encoding = "latin1";
-  }
-#else
-  default_encoding = "latin1";
-#endif /* HAVE_LANGINFO_CODESET */
+  else
+    default_encoding = locale_charset();
 
   program_name = argv[0];
   int opt;