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24d56127 LC |
1 | # iconv.m4 serial AM7 (gettext-0.18) |
2 | dnl Copyright (C) 2000-2002, 2007-2009 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. | |
6 | ||
7 | dnl From Bruno Haible. | |
8 | ||
9 | AC_DEFUN([AM_ICONV_LINKFLAGS_BODY], | |
10 | [ | |
11 | dnl Prerequisites of AC_LIB_LINKFLAGS_BODY. | |
12 | AC_REQUIRE([AC_LIB_PREPARE_PREFIX]) | |
13 | AC_REQUIRE([AC_LIB_RPATH]) | |
14 | ||
15 | dnl Search for libiconv and define LIBICONV, LTLIBICONV and INCICONV | |
16 | dnl accordingly. | |
17 | AC_LIB_LINKFLAGS_BODY([iconv]) | |
18 | ]) | |
19 | ||
20 | AC_DEFUN([AM_ICONV_LINK], | |
21 | [ | |
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 | |
25 | ||
26 | dnl Search for libiconv and define LIBICONV, LTLIBICONV and INCICONV | |
27 | dnl accordingly. | |
28 | AC_REQUIRE([AM_ICONV_LINKFLAGS_BODY]) | |
29 | ||
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], [$INCICONV]) | |
36 | ||
37 | AC_CACHE_CHECK([for iconv], [am_cv_func_iconv], [ | |
38 | am_cv_func_iconv="no, consider installing GNU libiconv" | |
39 | am_cv_lib_iconv=no | |
40 | AC_TRY_LINK([#include <stdlib.h> | |
41 | #include <iconv.h>], | |
42 | [iconv_t cd = iconv_open("",""); | |
43 | iconv(cd,NULL,NULL,NULL,NULL); | |
44 | iconv_close(cd);], | |
45 | [am_cv_func_iconv=yes]) | |
46 | if test "$am_cv_func_iconv" != yes; then | |
47 | am_save_LIBS="$LIBS" | |
48 | LIBS="$LIBS $LIBICONV" | |
49 | AC_TRY_LINK([#include <stdlib.h> | |
50 | #include <iconv.h>], | |
51 | [iconv_t cd = iconv_open("",""); | |
52 | iconv(cd,NULL,NULL,NULL,NULL); | |
53 | iconv_close(cd);], | |
54 | [am_cv_lib_iconv=yes] | |
55 | [am_cv_func_iconv=yes]) | |
56 | LIBS="$am_save_LIBS" | |
57 | fi | |
58 | ]) | |
59 | if test "$am_cv_func_iconv" = yes; then | |
60 | AC_CACHE_CHECK([for working iconv], [am_cv_func_iconv_works], [ | |
61 | dnl This tests against bugs in AIX 5.1 and HP-UX 11.11. | |
62 | am_save_LIBS="$LIBS" | |
63 | if test $am_cv_lib_iconv = yes; then | |
64 | LIBS="$LIBS $LIBICONV" | |
65 | fi | |
66 | AC_TRY_RUN([ | |
67 | #include <iconv.h> | |
68 | #include <string.h> | |
69 | int main () | |
70 | { | |
71 | /* Test against AIX 5.1 bug: Failures are not distinguishable from successful | |
72 | returns. */ | |
73 | { | |
74 | iconv_t cd_utf8_to_88591 = iconv_open ("ISO8859-1", "UTF-8"); | |
75 | if (cd_utf8_to_88591 != (iconv_t)(-1)) | |
76 | { | |
77 | static const char input[] = "\342\202\254"; /* EURO SIGN */ | |
78 | char buf[10]; | |
79 | const char *inptr = input; | |
80 | size_t inbytesleft = strlen (input); | |
81 | char *outptr = buf; | |
82 | size_t outbytesleft = sizeof (buf); | |
83 | size_t res = iconv (cd_utf8_to_88591, | |
84 | (char **) &inptr, &inbytesleft, | |
85 | &outptr, &outbytesleft); | |
86 | if (res == 0) | |
87 | return 1; | |
88 | } | |
89 | } | |
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. */ | |
92 | { | |
93 | iconv_t cd_88591_to_utf8 = iconv_open ("utf8", "iso88591"); | |
94 | if (cd_88591_to_utf8 != (iconv_t)(-1)) | |
95 | { | |
96 | static const char input[] = "\304rger mit b\366sen B\374bchen ohne Augenma\337"; | |
97 | char buf[50]; | |
98 | const char *inptr = input; | |
99 | size_t inbytesleft = strlen (input); | |
100 | char *outptr = buf; | |
101 | size_t outbytesleft = sizeof (buf); | |
102 | size_t res = iconv (cd_88591_to_utf8, | |
103 | (char **) &inptr, &inbytesleft, | |
104 | &outptr, &outbytesleft); | |
105 | if ((int)res > 0) | |
106 | return 1; | |
107 | } | |
108 | } | |
109 | #endif | |
110 | /* Test against HP-UX 11.11 bug: No converter from EUC-JP to UTF-8 is | |
111 | provided. */ | |
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) | |
116 | /* Try AIX names. */ | |
117 | && iconv_open ("UTF-8", "IBM-eucJP") == (iconv_t)(-1) | |
118 | /* Try HP-UX names. */ | |
119 | && iconv_open ("utf8", "eucJP") == (iconv_t)(-1)) | |
120 | return 1; | |
121 | return 0; | |
122 | }], [am_cv_func_iconv_works=yes], [am_cv_func_iconv_works=no], | |
123 | [case "$host_os" in | |
124 | aix* | hpux*) am_cv_func_iconv_works="guessing no" ;; | |
125 | *) am_cv_func_iconv_works="guessing yes" ;; | |
126 | esac]) | |
127 | LIBS="$am_save_LIBS" | |
128 | ]) | |
129 | case "$am_cv_func_iconv_works" in | |
130 | *no) am_func_iconv=no am_cv_lib_iconv=no ;; | |
131 | *) am_func_iconv=yes ;; | |
132 | esac | |
133 | else | |
134 | am_func_iconv=no am_cv_lib_iconv=no | |
135 | fi | |
136 | if test "$am_func_iconv" = yes; then | |
137 | AC_DEFINE([HAVE_ICONV], [1], | |
138 | [Define if you have the iconv() function and it works.]) | |
139 | fi | |
140 | if test "$am_cv_lib_iconv" = yes; then | |
141 | AC_MSG_CHECKING([how to link with libiconv]) | |
142 | AC_MSG_RESULT([$LIBICONV]) | |
143 | else | |
144 | dnl If $LIBICONV didn't lead to a usable library, we don't need $INCICONV | |
145 | dnl either. | |
146 | CPPFLAGS="$am_save_CPPFLAGS" | |
147 | LIBICONV= | |
148 | LTLIBICONV= | |
149 | fi | |
150 | AC_SUBST([LIBICONV]) | |
151 | AC_SUBST([LTLIBICONV]) | |
152 | ]) | |
153 | ||
154 | AC_DEFUN([AM_ICONV], | |
155 | [ | |
156 | AM_ICONV_LINK | |
157 | if test "$am_cv_func_iconv" = yes; then | |
158 | AC_MSG_CHECKING([for iconv declaration]) | |
159 | AC_CACHE_VAL([am_cv_proto_iconv], [ | |
160 | AC_TRY_COMPILE([ | |
161 | #include <stdlib.h> | |
162 | #include <iconv.h> | |
163 | extern | |
164 | #ifdef __cplusplus | |
165 | "C" | |
166 | #endif | |
167 | #if defined(__STDC__) || defined(__cplusplus) | |
168 | size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft); | |
169 | #else | |
170 | size_t iconv(); | |
171 | #endif | |
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.]) | |
179 | fi | |
180 | ]) |