fix make {,install_}{,host}utils

Signed-off-by: Bernhard Reutner-Fischer <rep.dot.nop@gmail.com>

8 files changed, 375 insertions, 232 deletions

diff --git a/Makefile.in b/Makefile.in
index f02b6bd55..b84ed15f5 100644
--- a/Makefile.in
+++ b/Makefile.in
@@ -372,19 +372,19 @@ ifeq ($(HAVE_SHARED),y)
 endif
 
 utils:
-	$(Q)$(MAKE) CROSS="$(CROSS)" CC="$(CC)" -C utils
+	$(Q)$(MAKE) CROSS="$(CROSS)" CC="$(CC)" -C utils $@
 
 # Installs helper applications, such as 'ldd' and 'ldconfig'
 install_utils: utils
-	$(MAKE) CROSS="$(CROSS)" CC="$(CC)" -C utils utils_install
+	$(Q)$(MAKE) CROSS="$(CROSS)" CC="$(CC)" -C utils utils_install
 
 endif # ifeq ($(HAVE_DOT_CONFIG),y)
 
 hostutils:
-	$(Q)$(MAKE) CROSS="$(CROSS)" CC="$(CC)" HOSTCC="$(HOSTCC)" -C utils hostutils
+	$(Q)$(MAKE) CROSS="$(CROSS)" CC="$(CC)" HOSTCC="$(HOSTCC)" DOTHOST=.host -C utils $@
 
 install_hostutils: hostutils
-	$(MAKE) CROSS="$(CROSS)" CC="$(CC)" -C utils utils_install DOTHOST=.host
+	$(Q)$(MAKE) CROSS="$(CROSS)" CC="$(CC)" HOSTCC="$(HOSTCC)" DOTHOST=.host -C utils utils_install
 
 $(addprefix $(top_builddir),include/bits include/sys include/config extra/config/lxdialog extra/locale $(subdirs)):
 	$(do_mkdir)
diff --git a/extra/locale/.gitignore b/extra/locale/.gitignore
new file mode 100644
index 000000000..3ea196522
--- /dev/null
+++ b/extra/locale/.gitignore
@@ -0,0 +1,26 @@
+#
+# Never ignore these
+#
+!.gitignore
+
+#
+# Generated files
+#
+/c8tables.h
+/codesets.txt
+/locale_collate.h
+/locale_data.c
+/locale_tables.h
+/locales.txt
+/lt_defines.h
+/uClibc_locale_data.h
+/wctables.h
+#
+# generators
+#
+/gen_collate
+/gen_ldc
+/gen_locale
+/gen_wc8bit
+/gen_wctype
+
diff --git a/extra/locale/programs/locale.c b/extra/locale/programs/locale.c
index 462a57913..dfd202954 100644
--- a/extra/locale/programs/locale.c
+++ b/extra/locale/programs/locale.c
@@ -10,10 +10,9 @@
  *
  */
 
-
+#include <string.h>
 #include <stdio.h>
 #include <stdlib.h>
-#include <string.h>
 #include <langinfo.h>
 #include <unistd.h>
 #ifdef __UCLIBC_HAS_GETOPT_LONG__
diff --git a/libc/misc/wchar/wchar.c b/libc/misc/wchar/wchar.c
index 099ac3935..9b7196238 100644
--- a/libc/misc/wchar/wchar.c
+++ b/libc/misc/wchar/wchar.c
@@ -97,7 +97,7 @@
  *
  * Manuel
  */
-
+#ifdef _LIBC
 #include <errno.h>
 #include <stddef.h>
 #include <limits.h>
@@ -170,7 +170,7 @@ extern size_t _wchar_utf8sntowcs(wchar_t *__restrict pwc, size_t wn,
 
 extern size_t _wchar_wcsntoutf8s(char *__restrict s, size_t n,
 					const wchar_t **__restrict src, size_t wn) attribute_hidden;
-
+#endif
 /**********************************************************************/
 #ifdef L_btowc
 
@@ -1199,45 +1199,6 @@ typedef struct {
 	int skip_invalid_input;		/* To support iconv -c option. */
 } _UC_iconv_t;
 
-
-
-#ifdef L_iconv
-
-#include <iconv.h>
-#include <string.h>
-#include <endian.h>
-#include <byteswap.h>
-
-#if (__BYTE_ORDER != __BIG_ENDIAN) && (__BYTE_ORDER != __LITTLE_ENDIAN)
-#error unsupported endianness for iconv
-#endif
-
-#ifndef __CTYPE_HAS_8_BIT_LOCALES
-#error currently iconv requires 8 bit locales
-#endif
-#ifndef __CTYPE_HAS_UTF_8_LOCALES
-#error currently iconv requires UTF-8 locales
-#endif
-
-
-enum {
-	IC_WCHAR_T = 0xe0,
-	IC_MULTIBYTE = 0xe0,
-#if __BYTE_ORDER == __BIG_ENDIAN
-	IC_UCS_4 =	0xec,
-	IC_UTF_32 = 0xe4,
-	IC_UCS_2 =	0xe2,
-	IC_UTF_16 = 0xea,
-#else
-	IC_UCS_4 =	0xed,
-	IC_UTF_32 = 0xe5,
-	IC_UCS_2 =	0xe3,
-	IC_UTF_16 = 0xeb,
-#endif
-	IC_UTF_8 = 2,
-	IC_ASCII = 1
-};
-
 /* For the multibyte
  * bit 0 means swap endian
  * bit 1 means 2 byte
@@ -1245,10 +1206,13 @@ enum {
  *
  */
 
+#if defined L_iconv && defined _LIBC
 /* Used externally only by iconv utility */
 extern const unsigned char __iconv_codesets[];
 libc_hidden_proto(__iconv_codesets)
+#endif
 
+#if defined L_iconv || defined L_iconv_main
 const unsigned char __iconv_codesets[] =
 	"\x0a\xe0""WCHAR_T\x00"		/* superset of UCS-4 but platform-endian */
 #if __BYTE_ORDER == __BIG_ENDIAN
@@ -1281,7 +1245,48 @@ const unsigned char __iconv_codesets[] =
 	"\x08\x02""UTF-8\x00"
 	"\x0b\x01""US-ASCII\x00"
 	"\x07\x01""ASCII";			/* Must be last! (special case to save a nul) */
+#endif
+#if defined L_iconv && defined _LIBC
 libc_hidden_data_def(__iconv_codesets)
+#endif
+
+
+#ifdef L_iconv
+
+#include <iconv.h>
+#include <string.h>
+#include <endian.h>
+#include <byteswap.h>
+
+#if (__BYTE_ORDER != __BIG_ENDIAN) && (__BYTE_ORDER != __LITTLE_ENDIAN)
+#error unsupported endianness for iconv
+#endif
+
+#ifndef __CTYPE_HAS_8_BIT_LOCALES
+#error currently iconv requires 8 bit locales
+#endif
+#ifndef __CTYPE_HAS_UTF_8_LOCALES
+#error currently iconv requires UTF-8 locales
+#endif
+
+
+enum {
+	IC_WCHAR_T = 0xe0,
+	IC_MULTIBYTE = 0xe0,
+#if __BYTE_ORDER == __BIG_ENDIAN
+	IC_UCS_4 =	0xec,
+	IC_UTF_32 = 0xe4,
+	IC_UCS_2 =	0xe2,
+	IC_UTF_16 = 0xea,
+#else
+	IC_UCS_4 =	0xed,
+	IC_UTF_32 = 0xe5,
+	IC_UCS_2 =	0xe3,
+	IC_UTF_16 = 0xeb,
+#endif
+	IC_UTF_8 = 2,
+	IC_ASCII = 1
+};
 
 /* Experimentally off - libc_hidden_proto(strcasecmp) */
 
@@ -1575,172 +1580,4 @@ size_t weak_function iconv(iconv_t cd, char **__restrict inbuf,
 	}
 	return nrcount;
 }
-
-#endif
-/**********************************************************************/
-#ifdef L_iconv_main
-
-#include <string.h>
-#include <iconv.h>
-#include <stdarg.h>
-#include <libgen.h>
-
-extern const unsigned char __iconv_codesets[];
-
-#define IBUF BUFSIZ
-#define OBUF BUFSIZ
-
-static char *progname;
-static int hide_errors;
-
-static void error_msg(const char *fmt, ...)
-	 __attribute__ ((noreturn, format (printf, 1, 2)));
-
-static void error_msg(const char *fmt, ...)
-{
-	va_list arg;
-
-	if (!hide_errors) {
-		fprintf(stderr, "%s: ", progname);
-		va_start(arg, fmt);
-		vfprintf(stderr, fmt, arg);
-		va_end(arg);
-	}
-
-	exit(EXIT_FAILURE);
-}
-
-int main(int argc, char **argv)
-{
-	FILE *ifile;
-	FILE *ofile = stdout;
-	const char *p;
-	const char *s;
-	static const char opt_chars[] = "tfocsl";
-	                              /* 012345 */
-	const char *opts[sizeof(opt_chars)]; /* last is infile name */
-	iconv_t ic;
-	char ibuf[IBUF];
-	char obuf[OBUF];
-	char *pi;
-	char *po;
-	size_t ni, no, r, pos;
-
-	hide_errors = 0;
-
-	for (s = opt_chars ; *s ; s++) {
-		opts[ s - opt_chars ] = NULL;
-	}
-
-	progname = *argv;
-	while (--argc) {
-		p = *++argv;
-		if ((*p != '-') || (*++p == 0)) {
-			break;
-		}
-		do {
-			if ((s = strchr(opt_chars,*p)) == NULL) {
-			USAGE:
-				s = basename(progname);
-				fprintf(stderr,
-						"%s [-cs] -f fromcode -t tocode [-o outputfile] [inputfile ...]\n"
-						"  or\n%s -l\n", s, s);
-				return EXIT_FAILURE;
-			}
-			if ((s - opt_chars) < 3) {
-				if ((--argc == 0) || opts[s - opt_chars]) {
-					goto USAGE;
-				}
-				opts[s - opt_chars] = *++argv;
-			} else {
-				opts[s - opt_chars] = p;
-			}
-		} while (*++p);
-	}
-
-	if (opts[5]) {				/* -l */
-		fprintf(stderr, "Recognized codesets:\n");
-		for (s = (char *)__iconv_codesets ; *s ; s += *s) {
-			fprintf(stderr,"  %s\n", s+2);
-		}
-		s = __LOCALE_DATA_CODESET_LIST;
-		do {
-			fprintf(stderr,"  %s\n", __LOCALE_DATA_CODESET_LIST+ (unsigned char)(*s));
-		} while (*++s);
-
-		return EXIT_SUCCESS;
-	}
-
-	if (opts[4]) {
-		hide_errors = 1;
-	}
-
-	if (!opts[0] || !opts[1]) {
-		goto USAGE;
-	}
-	if ((ic = iconv_open(opts[0],opts[1])) == ((iconv_t)(-1))) {
-		error_msg( "unsupported codeset in %s -> %s conversion\n", opts[1], opts[0]);
-	}
-	if (opts[3]) {				/* -c */
-		((_UC_iconv_t *) ic)->skip_invalid_input = 1;
-	}
-
-	if ((s = opts[2]) != NULL) {
-		if (!(ofile = fopen(s, "w"))) {
-			error_msg( "couldn't open %s for writing\n", s);
-		}
-	}
-
-	pos = ni = 0;
-	do {
-		if (!argc || ((**argv == '-') && !((*argv)[1]))) {
-			ifile = stdin;		/* we don't check for duplicates */
-		} else if (!(ifile = fopen(*argv, "r"))) {
-			error_msg( "couldn't open %s for reading\n", *argv);
-		}
-
-		while ((r = fread(ibuf + ni, 1, IBUF - ni, ifile)) > 0) {
-			pos += r;
-			ni += r;
-			no = OBUF;
-			pi = ibuf;
-			po = obuf;
-			if ((r = iconv(ic, &pi, &ni, &po, &no)) == ((size_t)(-1))) {
-				if ((errno != EINVAL) && (errno != E2BIG)) {
-					error_msg( "iconv failed at pos %lu : %m\n", (unsigned long) (pos - ni));
-				}
-			}
-			if ((r = OBUF - no) > 0) {
-				if (fwrite(obuf, 1, OBUF - no, ofile) < r) {
-					error_msg( "write error\n");
-				}
-			}
-			if (ni) {			/* still bytes in buffer! */
-				memmove(ibuf, pi, ni);
-			}
-		}
-
-		if (ferror(ifile)) {
-			error_msg( "read error\n");
-		}
-
-		++argv;
-
-		if (ifile != stdin) {
-			fclose(ifile);
-		}
-
-	} while (--argc > 0);
-
-	iconv_close(ic);
-
-	if (ni) {
-		error_msg( "incomplete sequence\n");
-	}
-
-	return (((_UC_iconv_t *) ic)->skip_invalid_input < 2)
-		? EXIT_SUCCESS : EXIT_FAILURE;
-}
-
 #endif
-/**********************************************************************/
diff --git a/utils/.gitignore b/utils/.gitignore
index af2888834..8b2853db0 100644
--- a/utils/.gitignore
+++ b/utils/.gitignore
@@ -2,3 +2,7 @@ ldconfig
 ldconfig.host
 ldd
 ldd.host
+iconv
+iconv.host
+locale
+locale.host
diff --git a/utils/Makefile.in b/utils/Makefile.in
index 5e1628231..c2466542c 100644
--- a/utils/Makefile.in
+++ b/utils/Makefile.in
@@ -1,6 +1,6 @@
 # Makefile for uClibc
 #
-# Copyright (C) 2000-2008 Erik Andersen <andersen@uclibc.org>
+# Copyright (C) 2000-2009 Erik Andersen <andersen@uclibc.org>
 #
 # Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
 
@@ -24,18 +24,19 @@ else
 CFLAGS-utils-shared :=
 endif
 
-CFLAGS-ldconfig :=
+CFLAGS-ldconfig := -DBUILDING_LINKAGE
 ifeq ($(UCLIBC_STATIC_LDCONFIG),y)
 CFLAGS-ldconfig += -static
 else
 CFLAGS-ldconfig += $(CFLAGS-utils-shared)
 endif
 
-CFLAGS-ldd := $(CFLAGS-utils-shared)
+CFLAGS-ldd := $(CFLAGS-utils-shared) -DBUILDING_LINKAGE
 
 # Need CFLAGS-utils explicitly, because the source file is not located in utils
 CFLAGS-iconv := $(CFLAGS-utils) \
     $(CFLAGS-utils-shared) \
+    -I$(top_srcdir)libc/misc/wchar \
     -DL_iconv_main \
 
 CFLAGS-locale := $(CFLAGS-utils)
@@ -48,13 +49,23 @@ LDSO_CACHE_SUPPORT := -D__LDSO_CACHE_SUPPORT__=1
 endif
 
 BUILD_CFLAGS-utils := \
-    -include $(top_srcdir)include/elf.h \
-    -I$(top_srcdir)ldso/include \
     -DUCLIBC_RUNTIME_PREFIX=\"$(RUNTIME_PREFIX)\" \
     -DUCLIBC_LDSO=$(UCLIBC_LDSO) \
     $(LDSO_CACHE_SUPPORT)
-BUILD_CFLAGS-ldconfig.host := $(BUILD_CFLAGS-utils)
-BUILD_CFLAGS-ldd.host      := $(BUILD_CFLAGS-utils)
+BUILD_CFLAGS-ldconfig.host := $(BUILD_CFLAGS-utils) \
+				-DBUILDING_LINKAGE \
+				-I$(top_srcdir)ldso/include
+BUILD_CFLAGS-ldd.host      := $(BUILD_CFLAGS-utils) \
+				-DBUILDING_LINKAGE \
+				-I$(top_srcdir)ldso/include \
+				-include $(top_srcdir)include/elf.h
+BUILD_CFLAGS-locale.host   := $(BUILD_CFLAGS-utils) \
+				-DNOT_IN_libc \
+				-I$(top_srcdir)utils/ \
+				-I.
+BUILD_CFLAGS-iconv.host    := $(BUILD_CFLAGS-utils) \
+			-include $(top_builddir)extra/locale/c8tables.h \
+			-I$(top_srcdir)libc/misc/wchar -DL_iconv_main
 
 
 # Rules
@@ -69,31 +80,31 @@ ifeq ($(HAVE_SHARED),y)
 utils_OBJ += ldconfig ldd
 endif
 
-utils_ICONV_OBJ :=
 utils_LOCALE_OBJ :=
 ifeq ($(UCLIBC_HAS_LOCALE),y)
-utils_ICONV_OBJ := $(utils_OUT)/iconv
-utils_LOCALE_OBJ := $(utils_OUT)/locale
+utils_OBJ += iconv
+#utils_LOCALE_OBJ += $(utils_OUT)/locale
 endif
 
 utils_OBJ := $(patsubst %,$(utils_OUT)/%,$(utils_OBJ))
 
 hostutils_OBJ := $(patsubst %,%.host,$(utils_OBJ))
+hostutils_LOCALE_OBJ := $(patsubst %,%.host,$(utils_LOCALE_OBJ))
 
-utils: $(utils_OBJ) $(utils_ICONV_OBJ) $(utils_LOCALE_OBJ)
+utils: $(utils_OBJ) $(utils_LOCALE_OBJ)
 
 # NOTE: We build the utils AFTER we have a uClibc-targeted toolchain.
 
 $(utils_OBJ): $(utils_OUT)/% : $(utils_DIR)/%.c | $(libc)
 	$(compile.u)
 
-$(utils_OUT)/iconv: $(top_srcdir)libc/misc/wchar/wchar.c | $(libc)
-	$(compile.u)
-
 $(utils_OUT)/locale: $(top_srcdir)extra/locale/programs/locale.c | $(libc)
 	$(compile.u)
 
-hostutils: $(hostutils_OBJ)
+$(utils_OUT)/locale.host: $(top_srcdir)extra/locale/programs/locale.c | $(libc)
+	$(hcompile.u)
+
+hostutils: $(hostutils_OBJ) $(hostutils_LOCALE_OBJ)
 
 $(hostutils_OBJ): $(utils_OUT)/%.host : $(utils_DIR)/%.c
 	$(hcompile.u)
@@ -103,14 +114,14 @@ install-y += utils_install
 
 # This installs both utils and hostutils, so doesn't depend on either.
 
-utils_install: $(addsuffix $(DOTHOST), $(utils_OBJ) $(utils_ICONV_OBJ) $(utils_LOCALE_OBJ))
+utils_install: $(addsuffix $(DOTHOST), $(utils_OBJ) $(utils_LOCALE_OBJ))
 ifeq ($(HAVE_SHARED),y)
 	$(Q)$(INSTALL) -D -m 755 $(utils_OUT)/ldd$(DOTHOST) $(PREFIX)$(DEVEL_PREFIX)bin/ldd
 	$(Q)$(INSTALL) -D -m 755 $(utils_OUT)/ldconfig$(DOTHOST) $(PREFIX)$(RUNTIME_PREFIX)sbin/ldconfig
 endif
 ifeq ($(UCLIBC_HAS_LOCALE),y)
 	$(Q)$(INSTALL) -D -m 755 $(utils_OUT)/iconv$(DOTHOST) $(PREFIX)$(DEVEL_PREFIX)bin/iconv
-	$(Q)$(INSTALL) -m 755 $(utils_OUT)/locale$(DOTHOST) $(PREFIX)$(DEVEL_PREFIX)bin/locale
+	#$(Q)$(INSTALL) -m 755 $(utils_OUT)/locale$(DOTHOST) $(PREFIX)$(DEVEL_PREFIX)bin/locale
 endif
 
 
diff --git a/utils/iconv.c b/utils/iconv.c
new file mode 100644
index 000000000..589c64cbd
--- /dev/null
+++ b/utils/iconv.c
@@ -0,0 +1,264 @@
+
+/*  Copyright (C) 2002, 2003, 2004     Manuel Novoa III
+ *
+ *  This library 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 of the License, or (at your option) any later version.
+ *
+ *  This library 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 library; if not, write to the Free
+ *  Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+/*  ATTENTION!   ATTENTION!   ATTENTION!   ATTENTION!   ATTENTION!
+ *
+ *  Besides uClibc, I'm using this code in my libc for elks, which is
+ *  a 16-bit environment with a fairly limited compiler.  It would make
+ *  things much easier for me if this file isn't modified unnecessarily.
+ *  In particular, please put any new or replacement functions somewhere
+ *  else, and modify the makefile to use your version instead.
+ *  Thanks.  Manuel
+ *
+ *  ATTENTION!   ATTENTION!   ATTENTION!   ATTENTION!   ATTENTION! */
+
+
+/* May 23, 2002     Initial Notes:
+ *
+ * I'm still tweaking this stuff, but it passes the tests I've thrown
+ * at it, and Erik needs it for the gcc port.  The glibc extension
+ * __wcsnrtombs() hasn't been tested, as I didn't find a test for it
+ * in the glibc source.  I also need to fix the behavior of
+ * _wchar_utf8sntowcs() if the max number of wchars to convert is 0.
+ *
+ * UTF-8 -> wchar -> UTF-8 conversion tests on Markus Kuhn's UTF-8-demo.txt
+ * file on my platform (x86) show about 5-10% faster conversion speed than
+ * glibc with mbsrtowcs()/wcsrtombs() and almost twice as fast as glibc with
+ * individual mbrtowc()/wcrtomb() calls.
+ *
+ * If 'DECODER' is defined, then _wchar_utf8sntowcs() will be compiled
+ * as a fail-safe UTF-8 decoder appropriate for a terminal, etc.  which
+ * needs to deal gracefully with whatever is sent to it.  In that mode,
+ * it passes Markus Kuhn's UTF-8-test.txt stress test.  I plan to add
+ * an arg to force that behavior, so the interface will be changing.
+ *
+ * I need to fix the error checking for 16-bit wide chars.  This isn't
+ * an issue for uClibc, but may be for ELKS.  I'm currently not sure
+ * if I'll use 16-bit, 32-bit, or configureable wchars in ELKS.
+ *
+ * July 1, 2002
+ *
+ * Fixed _wchar_utf8sntowcs() for the max number of wchars == 0 case.
+ * Fixed nul-char bug in btowc(), and another in __mbsnrtowcs() for 8-bit
+ *    locales.
+ * Enabled building of a C/POSIX-locale-only version, so full locale support
+ *    no longer needs to be enabled.
+ *
+ * Nov 4, 2002
+ *
+ * Fixed a bug in _wchar_wcsntoutf8s().  Don't store wcs position if dst is NULL.
+ * Also, introduce an awful hack into _wchar_wcsntoutf8s() and wcsrtombs() in
+ *   order to support %ls in printf.  See comments below for details.
+ * Change behaviour of wc<->mb functions when in the C locale.  Now they do
+ *   a 1-1 map for the range 0x80-UCHAR_MAX.  This is for backwards compatibility
+ *   and consistency with the stds requirements that a printf format string by
+ *   a valid multibyte string beginning and ending in it's initial shift state.
+ *
+ * Nov 5, 2002
+ *
+ * Forgot to change btowc and wctob when I changed the wc<->mb functions yesterday.
+ *
+ * Nov 7, 2002
+ *
+ * Add wcwidth and wcswidth, based on Markus Kuhn's wcwidth of 2002-05-08.
+ *   Added some size/speed optimizations and integrated it into my locale
+ *   framework.  Minimally tested at the moment, but the stub C-locale
+ *   version (which most people would probably be using) should be fine.
+ *
+ * Nov 21, 2002
+ *
+ * Revert the wc<->mb changes from earlier this month involving the C-locale.
+ * Add a couple of ugly hacks to support *wprintf.
+ * Add a mini iconv() and iconv implementation (requires locale support).
+ *
+ * Aug 1, 2003
+ * Bug fix for mbrtowc.
+ *
+ * Aug 18, 2003
+ * Bug fix: _wchar_utf8sntowcs and _wchar_wcsntoutf8s now set errno if EILSEQ.
+ *
+ * Feb 11, 2004
+ * Bug fix: Fix size check for remaining output space in iconv().
+ *
+ * Manuel
+ */
+
+#include "porting.h"
+#include <string.h>
+#include <iconv.h>
+#include <stdarg.h>
+#include <libgen.h>
+#include <wchar.h>
+#include "wchar.c" /* for _UC_iconv_t and __iconv_codesets */
+
+extern const unsigned char __iconv_codesets[];
+
+#define IBUF BUFSIZ
+#define OBUF BUFSIZ
+
+static char *progname;
+static int hide_errors;
+
+static void error_msg(const char *fmt, ...)
+	 __attribute__ ((noreturn, format (printf, 1, 2)));
+
+static void error_msg(const char *fmt, ...)
+{
+	va_list arg;
+
+	if (!hide_errors) {
+		fprintf(stderr, "%s: ", progname);
+		va_start(arg, fmt);
+		vfprintf(stderr, fmt, arg);
+		va_end(arg);
+	}
+
+	exit(EXIT_FAILURE);
+}
+
+int main(int argc, char **argv)
+{
+	FILE *ifile;
+	FILE *ofile = stdout;
+	const char *p;
+	const char *s;
+	static const char opt_chars[] = "tfocsl";
+	                              /* 012345 */
+	const char *opts[sizeof(opt_chars)]; /* last is infile name */
+	iconv_t ic;
+	char ibuf[IBUF];
+	char obuf[OBUF];
+	char *pi;
+	char *po;
+	size_t ni, no, r, pos;
+
+	hide_errors = 0;
+
+	for (s = opt_chars ; *s ; s++) {
+		opts[ s - opt_chars ] = NULL;
+	}
+
+	progname = *argv;
+	while (--argc) {
+		p = *++argv;
+		if ((*p != '-') || (*++p == 0)) {
+			break;
+		}
+		do {
+			if ((s = strchr(opt_chars,*p)) == NULL) {
+			USAGE:
+				s = basename(progname);
+				fprintf(stderr,
+						"%s [-cs] -f fromcode -t tocode [-o outputfile] [inputfile ...]\n"
+						"  or\n%s -l\n", s, s);
+				return EXIT_FAILURE;
+			}
+			if ((s - opt_chars) < 3) {
+				if ((--argc == 0) || opts[s - opt_chars]) {
+					goto USAGE;
+				}
+				opts[s - opt_chars] = *++argv;
+			} else {
+				opts[s - opt_chars] = p;
+			}
+		} while (*++p);
+	}
+
+	if (opts[5]) {				/* -l */
+		fprintf(stderr, "Recognized codesets:\n");
+		for (s = (char *)__iconv_codesets ; *s ; s += *s) {
+			fprintf(stderr,"  %s\n", s+2);
+		}
+		s = __LOCALE_DATA_CODESET_LIST;
+		do {
+			fprintf(stderr,"  %s\n", __LOCALE_DATA_CODESET_LIST+ (unsigned char)(*s));
+		} while (*++s);
+
+		return EXIT_SUCCESS;
+	}
+
+	if (opts[4]) {
+		hide_errors = 1;
+	}
+
+	if (!opts[0] || !opts[1]) {
+		goto USAGE;
+	}
+	if ((ic = iconv_open(opts[0],opts[1])) == ((iconv_t)(-1))) {
+		error_msg( "unsupported codeset in %s -> %s conversion\n", opts[1], opts[0]);
+	}
+	if (opts[3]) {				/* -c */
+		((_UC_iconv_t *) ic)->skip_invalid_input = 1;
+	}
+
+	if ((s = opts[2]) != NULL) {
+		if (!(ofile = fopen(s, "w"))) {
+			error_msg( "couldn't open %s for writing\n", s);
+		}
+	}
+
+	pos = ni = 0;
+	do {
+		if (!argc || ((**argv == '-') && !((*argv)[1]))) {
+			ifile = stdin;		/* we don't check for duplicates */
+		} else if (!(ifile = fopen(*argv, "r"))) {
+			error_msg( "couldn't open %s for reading\n", *argv);
+		}
+
+		while ((r = fread(ibuf + ni, 1, IBUF - ni, ifile)) > 0) {
+			pos += r;
+			ni += r;
+			no = OBUF;
+			pi = ibuf;
+			po = obuf;
+			if ((r = iconv(ic, &pi, &ni, &po, &no)) == ((size_t)(-1))) {
+				if ((errno != EINVAL) && (errno != E2BIG)) {
+					error_msg( "iconv failed at pos %lu : %m\n", (unsigned long) (pos - ni));
+				}
+			}
+			if ((r = OBUF - no) > 0) {
+				if (fwrite(obuf, 1, OBUF - no, ofile) < r) {
+					error_msg( "write error\n");
+				}
+			}
+			if (ni) {			/* still bytes in buffer! */
+				memmove(ibuf, pi, ni);
+			}
+		}
+
+		if (ferror(ifile)) {
+			error_msg( "read error\n");
+		}
+
+		++argv;
+
+		if (ifile != stdin) {
+			fclose(ifile);
+		}
+
+	} while (--argc > 0);
+
+	iconv_close(ic);
+
+	if (ni) {
+		error_msg( "incomplete sequence\n");
+	}
+
+	return (((_UC_iconv_t *) ic)->skip_invalid_input < 2)
+		? EXIT_SUCCESS : EXIT_FAILURE;
+}
diff --git a/utils/porting.h b/utils/porting.h
index b0d1f1af9..d4ead17d4 100644
--- a/utils/porting.h
+++ b/utils/porting.h
@@ -33,11 +33,13 @@
 # include <sys/mman.h>
 #endif
 
+#ifdef BUILDING_LINKAGE
 #include <link.h>
 /* makefile will include elf.h for us */
 
 #include "bswap.h"
 #include "dl-defs.h"
+#endif
 
 #ifdef DMALLOC
 #include <dmalloc.h>