1 # iconv.m4 serial AM6 (gettext-0.18)
2 dnl Copyright (C) 2000-2002, 2007-2008 Free Software Foundation, Inc.
3 dnl This file is free software; the Free Software Foundation
4 dnl gives unlimited permission to copy and/or distribute it,
5 dnl with or without modifications, as long as this notice is preserved.
9 AC_DEFUN([AM_ICONV_LINKFLAGS_BODY],
11 dnl Prerequisites of AC_LIB_LINKFLAGS_BODY.
12 AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
13 AC_REQUIRE([AC_LIB_RPATH])
15 dnl Search for libiconv and define LIBICONV, LTLIBICONV and INCICONV
17 AC_LIB_LINKFLAGS_BODY([iconv])
20 AC_DEFUN([AM_ICONV_LINK],
22 dnl Some systems have iconv in libc, some have it in libiconv (OSF/1 and
23 dnl those with the standalone portable GNU libiconv installed).
24 AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
26 dnl Search for libiconv and define LIBICONV, LTLIBICONV and INCICONV
28 AC_REQUIRE([AM_ICONV_LINKFLAGS_BODY])
30 dnl Add $INCICONV to CPPFLAGS before performing the following checks,
31 dnl because if the user has installed libiconv and not disabled its use
32 dnl via --without-libiconv-prefix, he wants to use it. The first
33 dnl AC_TRY_LINK will then fail, the second AC_TRY_LINK will succeed.
34 am_save_CPPFLAGS="$CPPFLAGS"
35 AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCICONV])
37 AC_CACHE_CHECK([for iconv], [am_cv_func_iconv], [
38 am_cv_func_iconv="no, consider installing GNU libiconv"
40 AC_TRY_LINK([#include <stdlib.h>
42 [iconv_t cd = iconv_open("","");
43 iconv(cd,NULL,NULL,NULL,NULL);
45 [am_cv_func_iconv=yes])
46 if test "$am_cv_func_iconv" != yes; then
48 LIBS="$LIBS $LIBICONV"
49 AC_TRY_LINK([#include <stdlib.h>
51 [iconv_t cd = iconv_open("","");
52 iconv(cd,NULL,NULL,NULL,NULL);
55 [am_cv_func_iconv=yes])
59 if test "$am_cv_func_iconv" = yes; then
60 AC_CACHE_CHECK([for working iconv], [am_cv_func_iconv_works], [
61 dnl This tests against bugs in AIX 5.1 and HP-UX 11.11.
63 if test $am_cv_lib_iconv = yes; then
64 LIBS="$LIBS $LIBICONV"
71 /* Test against AIX 5.1 bug: Failures are not distinguishable from successful
74 iconv_t cd_utf8_to_88591 = iconv_open ("ISO8859-1", "UTF-8");
75 if (cd_utf8_to_88591 != (iconv_t)(-1))
77 static const char input[] = "\342\202\254"; /* EURO SIGN */
79 const char *inptr = input;
80 size_t inbytesleft = strlen (input);
82 size_t outbytesleft = sizeof (buf);
83 size_t res = iconv (cd_utf8_to_88591,
84 (char **) &inptr, &inbytesleft,
85 &outptr, &outbytesleft);
90 #if 0 /* This bug could be worked around by the caller. */
91 /* Test against HP-UX 11.11 bug: Positive return value instead of 0. */
93 iconv_t cd_88591_to_utf8 = iconv_open ("utf8", "iso88591");
94 if (cd_88591_to_utf8 != (iconv_t)(-1))
96 static const char input[] = "\304rger mit b\366sen B\374bchen ohne Augenma\337";
98 const char *inptr = input;
99 size_t inbytesleft = strlen (input);
101 size_t outbytesleft = sizeof (buf);
102 size_t res = iconv (cd_88591_to_utf8,
103 (char **) &inptr, &inbytesleft,
104 &outptr, &outbytesleft);
110 /* Test against HP-UX 11.11 bug: No converter from EUC-JP to UTF-8 is
112 if (/* Try standardized names. */
113 iconv_open ("UTF-8", "EUC-JP") == (iconv_t)(-1)
114 /* Try IRIX, OSF/1 names. */
115 && iconv_open ("UTF-8", "eucJP") == (iconv_t)(-1)
117 && iconv_open ("UTF-8", "IBM-eucJP") == (iconv_t)(-1)
118 /* Try HP-UX names. */
119 && iconv_open ("utf8", "eucJP") == (iconv_t)(-1))
122 }], [am_cv_func_iconv_works=yes], [am_cv_func_iconv_works=no],
124 aix* | hpux*) am_cv_func_iconv_works="guessing no" ;;
125 *) am_cv_func_iconv_works="guessing yes" ;;
129 case "$am_cv_func_iconv_works" in
130 *no) am_func_iconv=no am_cv_lib_iconv=no ;;
131 *) am_func_iconv=yes ;;
134 am_func_iconv=no am_cv_lib_iconv=no
136 if test "$am_func_iconv" = yes; then
137 AC_DEFINE([HAVE_ICONV], 1,
138 [Define if you have the iconv() function and it works.])
140 if test "$am_cv_lib_iconv" = yes; then
141 AC_MSG_CHECKING([how to link with libiconv])
142 AC_MSG_RESULT([$LIBICONV])
144 dnl If $LIBICONV didn't lead to a usable library, we don't need $INCICONV
146 CPPFLAGS="$am_save_CPPFLAGS"
151 AC_SUBST([LTLIBICONV])
157 if test "$am_cv_func_iconv" = yes; then
158 AC_MSG_CHECKING([for iconv declaration])
159 AC_CACHE_VAL([am_cv_proto_iconv], [
167 #if defined(__STDC__) || defined(__cplusplus)
168 size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
172 ], [], [am_cv_proto_iconv_arg1=""], [am_cv_proto_iconv_arg1="const"])
173 am_cv_proto_iconv="extern size_t iconv (iconv_t cd, $am_cv_proto_iconv_arg1 char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);"])
174 am_cv_proto_iconv=`echo "[$]am_cv_proto_iconv" | tr -s ' ' | sed -e 's/( /(/'`
175 AC_MSG_RESULT([${ac_t:-
176 }$am_cv_proto_iconv])
177 AC_DEFINE_UNQUOTED([ICONV_CONST], [$am_cv_proto_iconv_arg1],
178 [Define as const if the declaration of iconv() needs const.])