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 ]) 181
