]>
Commit | Line | Data |
---|---|---|
e8864b1b RK |
1 | # iconv.m4 serial 21 |
2 | dnl Copyright (C) 2000-2002, 2007-2014, 2016-2019 Free Software Foundation, | |
3 | dnl Inc. | |
4 | dnl This file is free software; the Free Software Foundation | |
5 | dnl gives unlimited permission to copy and/or distribute it, | |
6 | dnl with or without modifications, as long as this notice is preserved. | |
7 | ||
8 | dnl From Bruno Haible. | |
9 | ||
10 | AC_DEFUN([AM_ICONV_LINKFLAGS_BODY], | |
11 | [ | |
12 | dnl Prerequisites of AC_LIB_LINKFLAGS_BODY. | |
13 | AC_REQUIRE([AC_LIB_PREPARE_PREFIX]) | |
14 | AC_REQUIRE([AC_LIB_RPATH]) | |
15 | ||
16 | dnl Search for libiconv and define LIBICONV, LTLIBICONV and INCICONV | |
17 | dnl accordingly. | |
18 | AC_LIB_LINKFLAGS_BODY([iconv]) | |
19 | ]) | |
20 | ||
21 | AC_DEFUN([AM_ICONV_LINK], | |
22 | [ | |
23 | dnl Some systems have iconv in libc, some have it in libiconv (OSF/1 and | |
24 | dnl those with the standalone portable GNU libiconv installed). | |
25 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles | |
26 | ||
27 | dnl Search for libiconv and define LIBICONV, LTLIBICONV and INCICONV | |
28 | dnl accordingly. | |
29 | AC_REQUIRE([AM_ICONV_LINKFLAGS_BODY]) | |
30 | ||
31 | dnl Add $INCICONV to CPPFLAGS before performing the following checks, | |
540493ba MA |
32 | dnl so that if libiconv is installed, it will be used (unless disabled |
33 | dnl via --without-libiconv-prefix). The first AC_LINK_IFELSE will | |
34 | dnl then fail, the second AC_LINK_IFELSE will succeed. | |
e8864b1b RK |
35 | am_save_CPPFLAGS="$CPPFLAGS" |
36 | AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCICONV]) | |
37 | ||
38 | AC_CACHE_CHECK([for iconv], [am_cv_func_iconv], [ | |
39 | am_cv_func_iconv="no, consider installing GNU libiconv" | |
40 | am_cv_lib_iconv=no | |
41 | AC_LINK_IFELSE( | |
42 | [AC_LANG_PROGRAM( | |
43 | [[ | |
44 | #include <stdlib.h> | |
45 | #include <iconv.h> | |
46 | ]], | |
47 | [[iconv_t cd = iconv_open("",""); | |
48 | iconv(cd,NULL,NULL,NULL,NULL); | |
49 | iconv_close(cd);]])], | |
50 | [am_cv_func_iconv=yes]) | |
51 | if test "$am_cv_func_iconv" != yes; then | |
52 | am_save_LIBS="$LIBS" | |
53 | LIBS="$LIBS $LIBICONV" | |
54 | AC_LINK_IFELSE( | |
55 | [AC_LANG_PROGRAM( | |
56 | [[ | |
57 | #include <stdlib.h> | |
58 | #include <iconv.h> | |
59 | ]], | |
60 | [[iconv_t cd = iconv_open("",""); | |
61 | iconv(cd,NULL,NULL,NULL,NULL); | |
62 | iconv_close(cd);]])], | |
63 | [am_cv_lib_iconv=yes] | |
64 | [am_cv_func_iconv=yes]) | |
65 | LIBS="$am_save_LIBS" | |
66 | fi | |
67 | ]) | |
68 | if test "$am_cv_func_iconv" = yes; then | |
69 | AC_CACHE_CHECK([for working iconv], [am_cv_func_iconv_works], [ | |
70 | dnl This tests against bugs in AIX 5.1, AIX 6.1..7.1, HP-UX 11.11, | |
71 | dnl Solaris 10. | |
72 | am_save_LIBS="$LIBS" | |
73 | if test $am_cv_lib_iconv = yes; then | |
74 | LIBS="$LIBS $LIBICONV" | |
75 | fi | |
76 | am_cv_func_iconv_works=no | |
77 | for ac_iconv_const in '' 'const'; do | |
78 | AC_RUN_IFELSE( | |
79 | [AC_LANG_PROGRAM( | |
80 | [[ | |
81 | #include <iconv.h> | |
82 | #include <string.h> | |
83 | ||
84 | #ifndef ICONV_CONST | |
85 | # define ICONV_CONST $ac_iconv_const | |
86 | #endif | |
87 | ]], | |
88 | [[int result = 0; | |
89 | /* Test against AIX 5.1 bug: Failures are not distinguishable from successful | |
90 | returns. */ | |
91 | { | |
92 | iconv_t cd_utf8_to_88591 = iconv_open ("ISO8859-1", "UTF-8"); | |
93 | if (cd_utf8_to_88591 != (iconv_t)(-1)) | |
94 | { | |
95 | static ICONV_CONST char input[] = "\342\202\254"; /* EURO SIGN */ | |
96 | char buf[10]; | |
97 | ICONV_CONST char *inptr = input; | |
98 | size_t inbytesleft = strlen (input); | |
99 | char *outptr = buf; | |
100 | size_t outbytesleft = sizeof (buf); | |
101 | size_t res = iconv (cd_utf8_to_88591, | |
102 | &inptr, &inbytesleft, | |
103 | &outptr, &outbytesleft); | |
104 | if (res == 0) | |
105 | result |= 1; | |
106 | iconv_close (cd_utf8_to_88591); | |
107 | } | |
108 | } | |
109 | /* Test against Solaris 10 bug: Failures are not distinguishable from | |
110 | successful returns. */ | |
111 | { | |
112 | iconv_t cd_ascii_to_88591 = iconv_open ("ISO8859-1", "646"); | |
113 | if (cd_ascii_to_88591 != (iconv_t)(-1)) | |
114 | { | |
115 | static ICONV_CONST char input[] = "\263"; | |
116 | char buf[10]; | |
117 | ICONV_CONST char *inptr = input; | |
118 | size_t inbytesleft = strlen (input); | |
119 | char *outptr = buf; | |
120 | size_t outbytesleft = sizeof (buf); | |
121 | size_t res = iconv (cd_ascii_to_88591, | |
122 | &inptr, &inbytesleft, | |
123 | &outptr, &outbytesleft); | |
124 | if (res == 0) | |
125 | result |= 2; | |
126 | iconv_close (cd_ascii_to_88591); | |
127 | } | |
128 | } | |
129 | /* Test against AIX 6.1..7.1 bug: Buffer overrun. */ | |
130 | { | |
131 | iconv_t cd_88591_to_utf8 = iconv_open ("UTF-8", "ISO-8859-1"); | |
132 | if (cd_88591_to_utf8 != (iconv_t)(-1)) | |
133 | { | |
134 | static ICONV_CONST char input[] = "\304"; | |
135 | static char buf[2] = { (char)0xDE, (char)0xAD }; | |
136 | ICONV_CONST char *inptr = input; | |
137 | size_t inbytesleft = 1; | |
138 | char *outptr = buf; | |
139 | size_t outbytesleft = 1; | |
140 | size_t res = iconv (cd_88591_to_utf8, | |
141 | &inptr, &inbytesleft, | |
142 | &outptr, &outbytesleft); | |
143 | if (res != (size_t)(-1) || outptr - buf > 1 || buf[1] != (char)0xAD) | |
144 | result |= 4; | |
145 | iconv_close (cd_88591_to_utf8); | |
146 | } | |
147 | } | |
148 | #if 0 /* This bug could be worked around by the caller. */ | |
149 | /* Test against HP-UX 11.11 bug: Positive return value instead of 0. */ | |
150 | { | |
151 | iconv_t cd_88591_to_utf8 = iconv_open ("utf8", "iso88591"); | |
152 | if (cd_88591_to_utf8 != (iconv_t)(-1)) | |
153 | { | |
154 | static ICONV_CONST char input[] = "\304rger mit b\366sen B\374bchen ohne Augenma\337"; | |
155 | char buf[50]; | |
156 | ICONV_CONST char *inptr = input; | |
157 | size_t inbytesleft = strlen (input); | |
158 | char *outptr = buf; | |
159 | size_t outbytesleft = sizeof (buf); | |
160 | size_t res = iconv (cd_88591_to_utf8, | |
161 | &inptr, &inbytesleft, | |
162 | &outptr, &outbytesleft); | |
163 | if ((int)res > 0) | |
164 | result |= 8; | |
165 | iconv_close (cd_88591_to_utf8); | |
166 | } | |
167 | } | |
168 | #endif | |
169 | /* Test against HP-UX 11.11 bug: No converter from EUC-JP to UTF-8 is | |
170 | provided. */ | |
171 | { | |
172 | /* Try standardized names. */ | |
173 | iconv_t cd1 = iconv_open ("UTF-8", "EUC-JP"); | |
174 | /* Try IRIX, OSF/1 names. */ | |
175 | iconv_t cd2 = iconv_open ("UTF-8", "eucJP"); | |
176 | /* Try AIX names. */ | |
177 | iconv_t cd3 = iconv_open ("UTF-8", "IBM-eucJP"); | |
178 | /* Try HP-UX names. */ | |
179 | iconv_t cd4 = iconv_open ("utf8", "eucJP"); | |
180 | if (cd1 == (iconv_t)(-1) && cd2 == (iconv_t)(-1) | |
181 | && cd3 == (iconv_t)(-1) && cd4 == (iconv_t)(-1)) | |
182 | result |= 16; | |
183 | if (cd1 != (iconv_t)(-1)) | |
184 | iconv_close (cd1); | |
185 | if (cd2 != (iconv_t)(-1)) | |
186 | iconv_close (cd2); | |
187 | if (cd3 != (iconv_t)(-1)) | |
188 | iconv_close (cd3); | |
189 | if (cd4 != (iconv_t)(-1)) | |
190 | iconv_close (cd4); | |
191 | } | |
192 | return result; | |
193 | ]])], | |
194 | [am_cv_func_iconv_works=yes], , | |
195 | [case "$host_os" in | |
196 | aix* | hpux*) am_cv_func_iconv_works="guessing no" ;; | |
197 | *) am_cv_func_iconv_works="guessing yes" ;; | |
198 | esac]) | |
199 | test "$am_cv_func_iconv_works" = no || break | |
200 | done | |
201 | LIBS="$am_save_LIBS" | |
202 | ]) | |
203 | case "$am_cv_func_iconv_works" in | |
204 | *no) am_func_iconv=no am_cv_lib_iconv=no ;; | |
205 | *) am_func_iconv=yes ;; | |
206 | esac | |
207 | else | |
208 | am_func_iconv=no am_cv_lib_iconv=no | |
209 | fi | |
210 | if test "$am_func_iconv" = yes; then | |
211 | AC_DEFINE([HAVE_ICONV], [1], | |
212 | [Define if you have the iconv() function and it works.]) | |
213 | fi | |
214 | if test "$am_cv_lib_iconv" = yes; then | |
215 | AC_MSG_CHECKING([how to link with libiconv]) | |
216 | AC_MSG_RESULT([$LIBICONV]) | |
217 | else | |
218 | dnl If $LIBICONV didn't lead to a usable library, we don't need $INCICONV | |
219 | dnl either. | |
220 | CPPFLAGS="$am_save_CPPFLAGS" | |
221 | LIBICONV= | |
222 | LTLIBICONV= | |
223 | fi | |
224 | AC_SUBST([LIBICONV]) | |
225 | AC_SUBST([LTLIBICONV]) | |
226 | ]) | |
227 | ||
228 | dnl Define AM_ICONV using AC_DEFUN_ONCE for Autoconf >= 2.64, in order to | |
229 | dnl avoid warnings like | |
230 | dnl "warning: AC_REQUIRE: `AM_ICONV' was expanded before it was required". | |
231 | dnl This is tricky because of the way 'aclocal' is implemented: | |
232 | dnl - It requires defining an auxiliary macro whose name ends in AC_DEFUN. | |
233 | dnl Otherwise aclocal's initial scan pass would miss the macro definition. | |
234 | dnl - It requires a line break inside the AC_DEFUN_ONCE and AC_DEFUN expansions. | |
235 | dnl Otherwise aclocal would emit many "Use of uninitialized value $1" | |
236 | dnl warnings. | |
237 | m4_define([gl_iconv_AC_DEFUN], | |
238 | m4_version_prereq([2.64], | |
239 | [[AC_DEFUN_ONCE( | |
240 | [$1], [$2])]], | |
241 | [m4_ifdef([gl_00GNULIB], | |
242 | [[AC_DEFUN_ONCE( | |
243 | [$1], [$2])]], | |
244 | [[AC_DEFUN( | |
245 | [$1], [$2])]])])) | |
246 | gl_iconv_AC_DEFUN([AM_ICONV], | |
247 | [ | |
248 | AM_ICONV_LINK | |
249 | if test "$am_cv_func_iconv" = yes; then | |
250 | AC_MSG_CHECKING([for iconv declaration]) | |
251 | AC_CACHE_VAL([am_cv_proto_iconv], [ | |
252 | AC_COMPILE_IFELSE( | |
253 | [AC_LANG_PROGRAM( | |
254 | [[ | |
255 | #include <stdlib.h> | |
256 | #include <iconv.h> | |
257 | extern | |
258 | #ifdef __cplusplus | |
259 | "C" | |
260 | #endif | |
261 | #if defined(__STDC__) || defined(_MSC_VER) || defined(__cplusplus) | |
262 | size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft); | |
263 | #else | |
264 | size_t iconv(); | |
265 | #endif | |
266 | ]], | |
267 | [[]])], | |
268 | [am_cv_proto_iconv_arg1=""], | |
269 | [am_cv_proto_iconv_arg1="const"]) | |
270 | am_cv_proto_iconv="extern size_t iconv (iconv_t cd, $am_cv_proto_iconv_arg1 char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);"]) | |
271 | am_cv_proto_iconv=`echo "[$]am_cv_proto_iconv" | tr -s ' ' | sed -e 's/( /(/'` | |
608f8749 | 272 | AC_MSG_RESULT([$am_cv_proto_iconv]) |
e8864b1b RK |
273 | else |
274 | dnl When compiling GNU libiconv on a system that does not have iconv yet, | |
275 | dnl pick the POSIX compliant declaration without 'const'. | |
276 | am_cv_proto_iconv_arg1="" | |
277 | fi | |
278 | AC_DEFINE_UNQUOTED([ICONV_CONST], [$am_cv_proto_iconv_arg1], | |
279 | [Define as const if the declaration of iconv() needs const.]) | |
280 | dnl Also substitute ICONV_CONST in the gnulib generated <iconv.h>. | |
281 | m4_ifdef([gl_ICONV_H_DEFAULTS], | |
282 | [AC_REQUIRE([gl_ICONV_H_DEFAULTS]) | |
283 | if test -n "$am_cv_proto_iconv_arg1"; then | |
284 | ICONV_CONST="const" | |
285 | fi | |
286 | ]) | |
287 | ]) |