1 # iconv.m4 serial 15 (gettext-0.18.2)
2 dnl Copyright (C) 2000-2002, 2007-2010 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 $INCICONV to CPPFLAGS before performing the following checks,
31 dnl because if the user has installed libiconv and not disabled its use
32 dnl via --without-libiconv-prefix, he wants to use it. The first
33 dnl AC_LINK_IFELSE will then fail, the second AC_LINK_IFELSE will succeed.
34 am_save_CPPFLAGS="$CPPFLAGS"
35 AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCICONV])
37 AC_CACHE_CHECK([for iconv], [am_cv_func_iconv], [
38 am_cv_func_iconv="no, consider installing GNU libiconv"
46 [[iconv_t cd = iconv_open("","");
47 iconv(cd,NULL,NULL,NULL,NULL);
49 [am_cv_func_iconv=yes])
50 if test "$am_cv_func_iconv" != yes; then
52 LIBS="$LIBS $LIBICONV"
59 [[iconv_t cd = iconv_open("","");
60 iconv(cd,NULL,NULL,NULL,NULL);
63 [am_cv_func_iconv=yes])
67 if test "$am_cv_func_iconv" = yes; then
68 AC_CACHE_CHECK([for working iconv], [am_cv_func_iconv_works], [
69 dnl This tests against bugs in AIX 5.1, AIX 6.1..7.1, HP-UX 11.11,
72 if test $am_cv_lib_iconv = yes; then
73 LIBS="$LIBS $LIBICONV"
81 /* Test against AIX 5.1 bug: Failures are not distinguishable from successful
84 iconv_t cd_utf8_to_88591 = iconv_open ("ISO8859-1", "UTF-8");
85 if (cd_utf8_to_88591 != (iconv_t)(-1))
87 static const char input[] = "\342\202\254"; /* EURO SIGN */
89 const char *inptr = input;
90 size_t inbytesleft = strlen (input);
92 size_t outbytesleft = sizeof (buf);
93 size_t res = iconv (cd_utf8_to_88591,
94 (char **) &inptr, &inbytesleft,
95 &outptr, &outbytesleft);
100 /* Test against Solaris 10 bug: Failures are not distinguishable from
101 successful returns. */
103 iconv_t cd_ascii_to_88591 = iconv_open ("ISO8859-1", "646");
104 if (cd_ascii_to_88591 != (iconv_t)(-1))
106 static const char input[] = "\263";
108 const char *inptr = input;
109 size_t inbytesleft = strlen (input);
111 size_t outbytesleft = sizeof (buf);
112 size_t res = iconv (cd_ascii_to_88591,
113 (char **) &inptr, &inbytesleft,
114 &outptr, &outbytesleft);
119 /* Test against AIX 6.1..7.1 bug: Buffer overrun. */
121 iconv_t cd_88591_to_utf8 = iconv_open ("UTF-8", "ISO-8859-1");
122 if (cd_88591_to_utf8 != (iconv_t)(-1))
124 static const char input[] = "\304";
125 static char buf[2] = { (char)0xDE, (char)0xAD };
126 const char *inptr = input;
127 size_t inbytesleft = 1;
129 size_t outbytesleft = 1;
130 size_t res = iconv (cd_88591_to_utf8,
131 (char **) &inptr, &inbytesleft,
132 &outptr, &outbytesleft);
133 if (res != (size_t)(-1) || outptr - buf > 1 || buf[1] != (char)0xAD)
137 #if 0 /* This bug could be worked around by the caller. */
138 /* Test against HP-UX 11.11 bug: Positive return value instead of 0. */
140 iconv_t cd_88591_to_utf8 = iconv_open ("utf8", "iso88591");
141 if (cd_88591_to_utf8 != (iconv_t)(-1))
143 static const char input[] = "\304rger mit b\366sen B\374bchen ohne Augenma\337";
145 const char *inptr = input;
146 size_t inbytesleft = strlen (input);
148 size_t outbytesleft = sizeof (buf);
149 size_t res = iconv (cd_88591_to_utf8,
150 (char **) &inptr, &inbytesleft,
151 &outptr, &outbytesleft);
157 /* Test against HP-UX 11.11 bug: No converter from EUC-JP to UTF-8 is
159 if (/* Try standardized names. */
160 iconv_open ("UTF-8", "EUC-JP") == (iconv_t)(-1)
161 /* Try IRIX, OSF/1 names. */
162 && iconv_open ("UTF-8", "eucJP") == (iconv_t)(-1)
164 && iconv_open ("UTF-8", "IBM-eucJP") == (iconv_t)(-1)
165 /* Try HP-UX names. */
166 && iconv_open ("utf8", "eucJP") == (iconv_t)(-1))
170 [am_cv_func_iconv_works=yes],
171 [am_cv_func_iconv_works=no],
175 aix* | hpux*) am_cv_func_iconv_works="guessing no" ;;
176 *) am_cv_func_iconv_works="guessing yes" ;;
182 case "$am_cv_func_iconv_works" in
183 *no) am_func_iconv=no am_cv_lib_iconv=no ;;
184 *) am_func_iconv=yes ;;
187 am_func_iconv=no am_cv_lib_iconv=no
189 if test "$am_func_iconv" = yes; then
190 AC_DEFINE([HAVE_ICONV], [1],
191 [Define if you have the iconv() function and it works.])
193 if test "$am_cv_lib_iconv" = yes; then
194 AC_MSG_CHECKING([how to link with libiconv])
195 AC_MSG_RESULT([$LIBICONV])
197 dnl If $LIBICONV didn't lead to a usable library, we don't need $INCICONV
199 CPPFLAGS="$am_save_CPPFLAGS"
204 AC_SUBST([LTLIBICONV])
207 dnl Define AM_ICONV using AC_DEFUN_ONCE for Autoconf >= 2.64, in order to
208 dnl avoid warnings like
209 dnl "warning: AC_REQUIRE: `AM_ICONV' was expanded before it was required".
210 dnl This is tricky because of the way 'aclocal' is implemented:
211 dnl - It requires defining an auxiliary macro whose name ends in AC_DEFUN.
212 dnl Otherwise aclocal's initial scan pass would miss the macro definition.
213 dnl - It requires a line break inside the AC_DEFUN_ONCE and AC_DEFUN expansions.
214 dnl Otherwise aclocal would emit many "Use of uninitialized value $1"
216 m4_define([gl_iconv_AC_DEFUN],
217 m4_version_prereq([2.64],
220 [m4_ifdef([gl_00GNULIB],
225 gl_iconv_AC_DEFUN([AM_ICONV],
228 if test "$am_cv_func_iconv" = yes; then
229 AC_MSG_CHECKING([for iconv declaration])
230 AC_CACHE_VAL([am_cv_proto_iconv], [
240 #if defined(__STDC__) || defined(__cplusplus)
241 size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
247 [am_cv_proto_iconv_arg1=""],
248 [am_cv_proto_iconv_arg1="const"])
249 am_cv_proto_iconv="extern size_t iconv (iconv_t cd, $am_cv_proto_iconv_arg1 char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);"])
250 am_cv_proto_iconv=`echo "[$]am_cv_proto_iconv" | tr -s ' ' | sed -e 's/( /(/'`
253 AC_DEFINE_UNQUOTED([ICONV_CONST], [$am_cv_proto_iconv_arg1],
254 [Define as const if the declaration of iconv() needs const.])