1 # iconv.m4 serial 18 (gettext-0.18.2) 2 dnl Copyright (C) 2000-2002, 2007-2012 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 $INCICONV to CPPFLAGS before performing the following checks, 31 dnl because if the user has installed libiconv and not disabled its use 32 dnl via --without-libiconv-prefix, he wants to use it. The first 33 dnl AC_LINK_IFELSE will then fail, the second AC_LINK_IFELSE will succeed. 34 am_save_CPPFLAGS="$CPPFLAGS" 35 AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCICONV]) 36 37 AC_CACHE_CHECK([for iconv], [am_cv_func_iconv], [ 38 am_cv_func_iconv="no, consider installing GNU libiconv" 39 am_cv_lib_iconv=no 40 AC_LINK_IFELSE( 41 [AC_LANG_PROGRAM( 42 [[ 43 #include <stdlib.h> 44 #include <iconv.h> 45 ]], 46 [[iconv_t cd = iconv_open("",""); 47 iconv(cd,NULL,NULL,NULL,NULL); 48 iconv_close(cd);]])], 49 [am_cv_func_iconv=yes]) 50 if test "$am_cv_func_iconv" != yes; then 51 am_save_LIBS="$LIBS" 52 LIBS="$LIBS $LIBICONV" 53 AC_LINK_IFELSE( 54 [AC_LANG_PROGRAM( 55 [[ 56 #include <stdlib.h> 57 #include <iconv.h> 58 ]], 59 [[iconv_t cd = iconv_open("",""); 60 iconv(cd,NULL,NULL,NULL,NULL); 61 iconv_close(cd);]])], 62 [am_cv_lib_iconv=yes] 63 [am_cv_func_iconv=yes]) 64 LIBS="$am_save_LIBS" 65 fi 66 ]) 67 if test "$am_cv_func_iconv" = yes; then 68 AC_CACHE_CHECK([for working iconv], [am_cv_func_iconv_works], [ 69 dnl This tests against bugs in AIX 5.1, AIX 6.1..7.1, HP-UX 11.11, 70 dnl Solaris 10. 71 am_save_LIBS="$LIBS" 72 if test $am_cv_lib_iconv = yes; then 73 LIBS="$LIBS $LIBICONV" 74 fi 75 AC_RUN_IFELSE( 76 [AC_LANG_SOURCE([[ 77 #include <iconv.h> 78 #include <string.h> 79 int main () 80 { 81 int result = 0; 82 /* Test against AIX 5.1 bug: Failures are not distinguishable from successful 83 returns. */ 84 { 85 iconv_t cd_utf8_to_88591 = iconv_open ("ISO8859-1", "UTF-8"); 86 if (cd_utf8_to_88591 != (iconv_t)(-1)) 87 { 88 static const char input[] = "\342\202\254"; /* EURO SIGN */ 89 char buf[10]; 90 const char *inptr = input; 91 size_t inbytesleft = strlen (input); 92 char *outptr = buf; 93 size_t outbytesleft = sizeof (buf); 94 size_t res = iconv (cd_utf8_to_88591, 95 (char **) &inptr, &inbytesleft, 96 &outptr, &outbytesleft); 97 if (res == 0) 98 result |= 1; 99 iconv_close (cd_utf8_to_88591); 100 } 101 } 102 /* Test against Solaris 10 bug: Failures are not distinguishable from 103 successful returns. */ 104 { 105 iconv_t cd_ascii_to_88591 = iconv_open ("ISO8859-1", "646"); 106 if (cd_ascii_to_88591 != (iconv_t)(-1)) 107 { 108 static const char input[] = "\263"; 109 char buf[10]; 110 const char *inptr = input; 111 size_t inbytesleft = strlen (input); 112 char *outptr = buf; 113 size_t outbytesleft = sizeof (buf); 114 size_t res = iconv (cd_ascii_to_88591, 115 (char **) &inptr, &inbytesleft, 116 &outptr, &outbytesleft); 117 if (res == 0) 118 result |= 2; 119 iconv_close (cd_ascii_to_88591); 120 } 121 } 122 /* Test against AIX 6.1..7.1 bug: Buffer overrun. */ 123 { 124 iconv_t cd_88591_to_utf8 = iconv_open ("UTF-8", "ISO-8859-1"); 125 if (cd_88591_to_utf8 != (iconv_t)(-1)) 126 { 127 static const char input[] = "\304"; 128 static char buf[2] = { (char)0xDE, (char)0xAD }; 129 const char *inptr = input; 130 size_t inbytesleft = 1; 131 char *outptr = buf; 132 size_t outbytesleft = 1; 133 size_t res = iconv (cd_88591_to_utf8, 134 (char **) &inptr, &inbytesleft, 135 &outptr, &outbytesleft); 136 if (res != (size_t)(-1) || outptr - buf > 1 || buf[1] != (char)0xAD) 137 result |= 4; 138 iconv_close (cd_88591_to_utf8); 139 } 140 } 141 #if 0 /* This bug could be worked around by the caller. */ 142 /* Test against HP-UX 11.11 bug: Positive return value instead of 0. */ 143 { 144 iconv_t cd_88591_to_utf8 = iconv_open ("utf8", "iso88591"); 145 if (cd_88591_to_utf8 != (iconv_t)(-1)) 146 { 147 static const char input[] = "\304rger mit b\366sen B\374bchen ohne Augenma\337"; 148 char buf[50]; 149 const char *inptr = input; 150 size_t inbytesleft = strlen (input); 151 char *outptr = buf; 152 size_t outbytesleft = sizeof (buf); 153 size_t res = iconv (cd_88591_to_utf8, 154 (char **) &inptr, &inbytesleft, 155 &outptr, &outbytesleft); 156 if ((int)res > 0) 157 result |= 8; 158 iconv_close (cd_88591_to_utf8); 159 } 160 } 161 #endif 162 /* Test against HP-UX 11.11 bug: No converter from EUC-JP to UTF-8 is 163 provided. */ 164 if (/* Try standardized names. */ 165 iconv_open ("UTF-8", "EUC-JP") == (iconv_t)(-1) 166 /* Try IRIX, OSF/1 names. */ 167 && iconv_open ("UTF-8", "eucJP") == (iconv_t)(-1) 168 /* Try AIX names. */ 169 && iconv_open ("UTF-8", "IBM-eucJP") == (iconv_t)(-1) 170 /* Try HP-UX names. */ 171 && iconv_open ("utf8", "eucJP") == (iconv_t)(-1)) 172 result |= 16; 173 return result; 174 }]])], 175 [am_cv_func_iconv_works=yes], 176 [am_cv_func_iconv_works=no], 177 [ 178 changequote(,)dnl 179 case "$host_os" in 180 aix* | hpux*) am_cv_func_iconv_works="guessing no" ;; 181 *) am_cv_func_iconv_works="guessing yes" ;; 182 esac 183 changequote([,])dnl 184 ]) 185 LIBS="$am_save_LIBS" 186 ]) 187 case "$am_cv_func_iconv_works" in 188 *no) am_func_iconv=no am_cv_lib_iconv=no ;; 189 *) am_func_iconv=yes ;; 190 esac 191 else 192 am_func_iconv=no am_cv_lib_iconv=no 193 fi 194 if test "$am_func_iconv" = yes; then 195 AC_DEFINE([HAVE_ICONV], [1], 196 [Define if you have the iconv() function and it works.]) 197 fi 198 if test "$am_cv_lib_iconv" = yes; then 199 AC_MSG_CHECKING([how to link with libiconv]) 200 AC_MSG_RESULT([$LIBICONV]) 201 else 202 dnl If $LIBICONV didn't lead to a usable library, we don't need $INCICONV 203 dnl either. 204 CPPFLAGS="$am_save_CPPFLAGS" 205 LIBICONV= 206 LTLIBICONV= 207 fi 208 AC_SUBST([LIBICONV]) 209 AC_SUBST([LTLIBICONV]) 210 ]) 211 212 dnl Define AM_ICONV using AC_DEFUN_ONCE for Autoconf >= 2.64, in order to 213 dnl avoid warnings like 214 dnl "warning: AC_REQUIRE: `AM_ICONV' was expanded before it was required". 215 dnl This is tricky because of the way 'aclocal' is implemented: 216 dnl - It requires defining an auxiliary macro whose name ends in AC_DEFUN. 217 dnl Otherwise aclocal's initial scan pass would miss the macro definition. 218 dnl - It requires a line break inside the AC_DEFUN_ONCE and AC_DEFUN expansions. 219 dnl Otherwise aclocal would emit many "Use of uninitialized value $1" 220 dnl warnings. 221 m4_define([gl_iconv_AC_DEFUN], 222 m4_version_prereq([2.64], 223 [[AC_DEFUN_ONCE( 224 [$1], [$2])]], 225 [m4_ifdef([gl_00GNULIB], 226 [[AC_DEFUN_ONCE( 227 [$1], [$2])]], 228 [[AC_DEFUN( 229 [$1], [$2])]])])) 230 gl_iconv_AC_DEFUN([AM_ICONV], 231 [ 232 AM_ICONV_LINK 233 if test "$am_cv_func_iconv" = yes; then 234 AC_MSG_CHECKING([for iconv declaration]) 235 AC_CACHE_VAL([am_cv_proto_iconv], [ 236 AC_COMPILE_IFELSE( 237 [AC_LANG_PROGRAM( 238 [[ 239 #include <stdlib.h> 240 #include <iconv.h> 241 extern 242 #ifdef __cplusplus 243 "C" 244 #endif 245 #if defined(__STDC__) || defined(_MSC_VER) || defined(__cplusplus) 246 size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft); 247 #else 248 size_t iconv(); 249 #endif 250 ]], 251 [[]])], 252 [am_cv_proto_iconv_arg1=""], 253 [am_cv_proto_iconv_arg1="const"]) 254 am_cv_proto_iconv="extern size_t iconv (iconv_t cd, $am_cv_proto_iconv_arg1 char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);"]) 255 am_cv_proto_iconv=`echo "[$]am_cv_proto_iconv" | tr -s ' ' | sed -e 's/( /(/'` 256 AC_MSG_RESULT([ 257 $am_cv_proto_iconv]) 258 AC_DEFINE_UNQUOTED([ICONV_CONST], [$am_cv_proto_iconv_arg1], 259 [Define as const if the declaration of iconv() needs const.]) 260 dnl Also substitute ICONV_CONST in the gnulib generated <iconv.h>. 261 m4_ifdef([gl_ICONV_H_DEFAULTS], 262 [AC_REQUIRE([gl_ICONV_H_DEFAULTS]) 263 if test -n "$am_cv_proto_iconv_arg1"; then 264 ICONV_CONST="const" 265 fi 266 ]) 267 fi 268 ]) 269
