1 GNU LIBICONV - character set conversion library
3 This library provides an iconv() implementation, for use on systems which
4 don't have one, or whose implementation cannot convert from/to Unicode.
6 It provides support for the encodings:
9 ASCII, ISO-8859-{1,2,3,4,5,7,9,10,13,14,15,16},
10 KOI8-R, KOI8-U, KOI8-RU,
11 CP{1250,1251,1252,1253,1254,1257}, CP{850,866},
12 Mac{Roman,CentralEurope,Iceland,Croatian,Romania},
13 Mac{Cyrillic,Ukraine,Greek,Turkish},
16 ISO-8859-{6,8}, CP{1255,1256}, CP862, Mac{Hebrew,Arabic}
18 EUC-JP, SHIFT_JIS, CP932, ISO-2022-JP, ISO-2022-JP-2, ISO-2022-JP-1
20 EUC-CN, HZ, GBK, CP936, GB18030, EUC-TW, BIG5, CP950, BIG5-HKSCS,
21 BIG5-HKSCS:2001, BIG5-HKSCS:1999, ISO-2022-CN, ISO-2022-CN-EXT
23 EUC-KR, CP949, ISO-2022-KR, JOHAB
27 Georgian-Academy, Georgian-PS
33 ISO-8859-11, TIS-620, CP874, MacThai
42 UCS-2, UCS-2BE, UCS-2LE
43 UCS-4, UCS-4BE, UCS-4LE
44 UTF-16, UTF-16BE, UTF-16LE
45 UTF-32, UTF-32BE, UTF-32LE
48 Full Unicode, in terms of `uint16_t' or `uint32_t'
49 (with machine dependent endianness and alignment)
50 UCS-2-INTERNAL, UCS-4-INTERNAL
51 Locale dependent, in terms of `char' or `wchar_t'
52 (with machine dependent endianness and alignment, and with OS and
53 locale dependent semantics)
55 The empty encoding name "" is equivalent to "char": it denotes the
56 locale dependent character encoding.
58 When configured with the option --enable-extra-encodings, it also provides
59 support for a few extra encodings:
62 CP{437,737,775,852,853,855,857,858,860,861,863,865,869,1125}
66 EUC-JISX0213, Shift_JISX0213, ISO-2022-JP-3
68 BIG5-2003 (experimental)
72 ATARIST, RISCOS-LATIN1
74 It can convert from any of these encodings to any other, through Unicode
77 It has also some limited support for transliteration, i.e. when a character
78 cannot be represented in the target character set, it can be approximated
79 through one or several similarly looking characters. Transliteration is
80 activated when "//TRANSLIT" is appended to the target encoding name.
82 libiconv is for you if your application needs to support multiple character
83 encodings, but that support lacks from your system.
89 As usual for GNU packages:
91 $ ./configure --prefix=/usr/local
95 After installing GNU libiconv for the first time, it is recommended to
96 recompile and reinstall GNU gettext, so that it can take advantage of
99 On systems other than GNU/Linux, the iconv program will be internationalized
100 only if GNU gettext has been built and installed before GNU libiconv. This
101 means that the first time GNU libiconv is installed, we have a circular
102 dependency between the GNU libiconv and GNU gettext packages, which can be
103 resolved by building and installing either
104 - first libiconv, then gettext, then libiconv again,
105 or (on systems supporting shared libraries, excluding AIX)
106 - first gettext, then libiconv, then gettext again.
107 Recall that before building a package for the second time, you need to erase
108 the traces of the first build by running "make distclean".
110 This library can be built and installed in two variants:
112 - The library mode. This works on all systems, and uses a library
113 `libiconv.so' and a header file `<iconv.h>'. (Both are installed
114 through "make install".)
116 To use it, simply #include <iconv.h> and use the functions.
118 To use it in an autoconfiguring package:
119 - If you don't use automake, append m4/iconv.m4 to your aclocal.m4
121 - If you do use automake, add m4/iconv.m4 to your m4 macro repository.
122 - Add to the link command line of libraries and executables that use
123 the functions the placeholder @LIBICONV@ (or, if using libtool for
124 the link, @LTLIBICONV@). If you use automake, the right place for
125 these additions are the *_LDADD variables.
126 Note that 'iconv.m4' is also part of the GNU gettext package, which
127 installs it in /usr/local/share/aclocal/iconv.m4.
129 - The libc plug/override mode. This works on GNU/Linux, Solaris and OSF/1
130 systems only. It is a way to get good iconv support without having
132 It installs a library `preloadable_libiconv.so'. This library can be used
133 with LD_PRELOAD, to override the iconv* functions present in the C library.
135 On GNU/Linux and Solaris:
136 $ export LD_PRELOAD=/usr/local/lib/preloadable_libiconv.so
139 $ export _RLD_LIST=/usr/local/lib/preloadable_libiconv.so:DEFAULT
141 A program's source need not be modified, the program need not even be
142 recompiled. Just set the LD_PRELOAD environment variable, that's it!
148 The libiconv and libcharset _libraries_ and their header files are under LGPL,
149 see file COPYING.LIB.
151 The iconv _program_ and the documentation are under GPL, see file COPYING.
157 ftp://ftp.gnu.org/pub/gnu/libiconv/libiconv-1.12.tar.gz
162 http://www.gnu.org/software/libiconv/
167 <bug-gnu-libiconv@gnu.org>
170 Bruno Haible <bruno@clisp.org>