| 1 | # iconv.m4 serial 18 (gettext-0.18.2)
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| 2 | dnl Copyright (C) 2000-2002, 2007-2014 Free Software Foundation, Inc.
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| 3 | dnl This file is free software; the Free Software Foundation
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| 4 | dnl gives unlimited permission to copy and/or distribute it,
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| 5 | dnl with or without modifications, as long as this notice is preserved.
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| 6 |
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| 7 | dnl From Bruno Haible.
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| 8 |
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| 9 | AC_DEFUN([AM_ICONV_LINKFLAGS_BODY],
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| 10 | [
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| 11 | dnl Prerequisites of AC_LIB_LINKFLAGS_BODY.
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| 12 | AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
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| 13 | AC_REQUIRE([AC_LIB_RPATH])
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| 14 |
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| 15 | dnl Search for libiconv and define LIBICONV, LTLIBICONV and INCICONV
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| 16 | dnl accordingly.
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| 17 | AC_LIB_LINKFLAGS_BODY([iconv])
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| 18 | ])
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| 19 |
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| 20 | AC_DEFUN([AM_ICONV_LINK],
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| 21 | [
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| 22 | dnl Some systems have iconv in libc, some have it in libiconv (OSF/1 and
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| 23 | dnl those with the standalone portable GNU libiconv installed).
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| 24 | AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
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| 25 |
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| 26 | dnl Search for libiconv and define LIBICONV, LTLIBICONV and INCICONV
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| 27 | dnl accordingly.
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| 28 | AC_REQUIRE([AM_ICONV_LINKFLAGS_BODY])
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| 29 |
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| 30 | dnl Add $INCICONV to CPPFLAGS before performing the following checks,
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| 31 | dnl because if the user has installed libiconv and not disabled its use
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| 32 | dnl via --without-libiconv-prefix, he wants to use it. The first
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| 33 | dnl AC_LINK_IFELSE will then fail, the second AC_LINK_IFELSE will succeed.
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| 34 | am_save_CPPFLAGS="$CPPFLAGS"
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| 35 | AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCICONV])
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| 36 |
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| 37 | AC_CACHE_CHECK([for iconv], [am_cv_func_iconv], [
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| 38 | am_cv_func_iconv="no, consider installing GNU libiconv"
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| 39 | am_cv_lib_iconv=no
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| 40 | AC_LINK_IFELSE(
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| 41 | [AC_LANG_PROGRAM(
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| 42 | [[
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| 43 | #include <stdlib.h>
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| 44 | #include <iconv.h>
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| 45 | ]],
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| 46 | [[iconv_t cd = iconv_open("","");
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| 47 | iconv(cd,NULL,NULL,NULL,NULL);
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| 48 | iconv_close(cd);]])],
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| 49 | [am_cv_func_iconv=yes])
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| 50 | if test "$am_cv_func_iconv" != yes; then
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| 51 | am_save_LIBS="$LIBS"
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| 52 | LIBS="$LIBS $LIBICONV"
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| 53 | AC_LINK_IFELSE(
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| 54 | [AC_LANG_PROGRAM(
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| 55 | [[
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| 56 | #include <stdlib.h>
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| 57 | #include <iconv.h>
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| 58 | ]],
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| 59 | [[iconv_t cd = iconv_open("","");
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| 60 | iconv(cd,NULL,NULL,NULL,NULL);
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| 61 | iconv_close(cd);]])],
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| 62 | [am_cv_lib_iconv=yes]
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| 63 | [am_cv_func_iconv=yes])
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| 64 | LIBS="$am_save_LIBS"
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| 65 | fi
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| 66 | ])
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| 67 | if test "$am_cv_func_iconv" = yes; then
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| 68 | AC_CACHE_CHECK([for working iconv], [am_cv_func_iconv_works], [
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| 69 | dnl This tests against bugs in AIX 5.1, AIX 6.1..7.1, HP-UX 11.11,
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| 70 | dnl Solaris 10.
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| 71 | am_save_LIBS="$LIBS"
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| 72 | if test $am_cv_lib_iconv = yes; then
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| 73 | LIBS="$LIBS $LIBICONV"
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| 74 | fi
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| 75 | AC_RUN_IFELSE(
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| 76 | [AC_LANG_SOURCE([[
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| 77 | #include <iconv.h>
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| 78 | #include <string.h>
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| 79 | int main ()
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| 80 | {
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| 81 | int result = 0;
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| 82 | /* Test against AIX 5.1 bug: Failures are not distinguishable from successful
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| 83 | returns. */
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| 84 | {
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| 85 | iconv_t cd_utf8_to_88591 = iconv_open ("ISO8859-1", "UTF-8");
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| 86 | if (cd_utf8_to_88591 != (iconv_t)(-1))
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| 87 | {
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| 88 | static const char input[] = "\342\202\254"; /* EURO SIGN */
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| 89 | char buf[10];
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| 90 | const char *inptr = input;
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| 91 | size_t inbytesleft = strlen (input);
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| 92 | char *outptr = buf;
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| 93 | size_t outbytesleft = sizeof (buf);
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| 94 | size_t res = iconv (cd_utf8_to_88591,
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| 95 | (char **) &inptr, &inbytesleft,
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| 96 | &outptr, &outbytesleft);
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| 97 | if (res == 0)
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| 98 | result |= 1;
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| 99 | iconv_close (cd_utf8_to_88591);
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| 100 | }
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| 101 | }
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| 102 | /* Test against Solaris 10 bug: Failures are not distinguishable from
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| 103 | successful returns. */
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| 104 | {
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| 105 | iconv_t cd_ascii_to_88591 = iconv_open ("ISO8859-1", "646");
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| 106 | if (cd_ascii_to_88591 != (iconv_t)(-1))
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| 107 | {
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| 108 | static const char input[] = "\263";
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| 109 | char buf[10];
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| 110 | const char *inptr = input;
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| 111 | size_t inbytesleft = strlen (input);
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| 112 | char *outptr = buf;
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| 113 | size_t outbytesleft = sizeof (buf);
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| 114 | size_t res = iconv (cd_ascii_to_88591,
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| 115 | (char **) &inptr, &inbytesleft,
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| 116 | &outptr, &outbytesleft);
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| 117 | if (res == 0)
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| 118 | result |= 2;
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| 119 | iconv_close (cd_ascii_to_88591);
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| 120 | }
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| 121 | }
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| 122 | /* Test against AIX 6.1..7.1 bug: Buffer overrun. */
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| 123 | {
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| 124 | iconv_t cd_88591_to_utf8 = iconv_open ("UTF-8", "ISO-8859-1");
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| 125 | if (cd_88591_to_utf8 != (iconv_t)(-1))
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| 126 | {
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| 127 | static const char input[] = "\304";
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| 128 | static char buf[2] = { (char)0xDE, (char)0xAD };
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| 129 | const char *inptr = input;
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| 130 | size_t inbytesleft = 1;
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| 131 | char *outptr = buf;
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| 132 | size_t outbytesleft = 1;
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| 133 | size_t res = iconv (cd_88591_to_utf8,
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| 134 | (char **) &inptr, &inbytesleft,
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| 135 | &outptr, &outbytesleft);
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| 136 | if (res != (size_t)(-1) || outptr - buf > 1 || buf[1] != (char)0xAD)
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| 137 | result |= 4;
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| 138 | iconv_close (cd_88591_to_utf8);
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| 139 | }
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| 140 | }
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| 141 | #if 0 /* This bug could be worked around by the caller. */
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| 142 | /* Test against HP-UX 11.11 bug: Positive return value instead of 0. */
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| 143 | {
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| 144 | iconv_t cd_88591_to_utf8 = iconv_open ("utf8", "iso88591");
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| 145 | if (cd_88591_to_utf8 != (iconv_t)(-1))
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| 146 | {
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| 147 | static const char input[] = "\304rger mit b\366sen B\374bchen ohne Augenma\337";
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| 148 | char buf[50];
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| 149 | const char *inptr = input;
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| 150 | size_t inbytesleft = strlen (input);
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| 151 | char *outptr = buf;
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| 152 | size_t outbytesleft = sizeof (buf);
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| 153 | size_t res = iconv (cd_88591_to_utf8,
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| 154 | (char **) &inptr, &inbytesleft,
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| 155 | &outptr, &outbytesleft);
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| 156 | if ((int)res > 0)
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| 157 | result |= 8;
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| 158 | iconv_close (cd_88591_to_utf8);
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| 159 | }
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| 160 | }
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| 161 | #endif
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| 162 | /* Test against HP-UX 11.11 bug: No converter from EUC-JP to UTF-8 is
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| 163 | provided. */
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| 164 | if (/* Try standardized names. */
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| 165 | iconv_open ("UTF-8", "EUC-JP") == (iconv_t)(-1)
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| 166 | /* Try IRIX, OSF/1 names. */
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| 167 | && iconv_open ("UTF-8", "eucJP") == (iconv_t)(-1)
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| 168 | /* Try AIX names. */
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| 169 | && iconv_open ("UTF-8", "IBM-eucJP") == (iconv_t)(-1)
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| 170 | /* Try HP-UX names. */
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| 171 | && iconv_open ("utf8", "eucJP") == (iconv_t)(-1))
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| 172 | result |= 16;
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| 173 | return result;
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| 174 | }]])],
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| 175 | [am_cv_func_iconv_works=yes],
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| 176 | [am_cv_func_iconv_works=no],
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| 177 | [
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| 178 | changequote(,)dnl
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| 179 | case "$host_os" in
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| 180 | aix* | hpux*) am_cv_func_iconv_works="guessing no" ;;
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| 181 | *) am_cv_func_iconv_works="guessing yes" ;;
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| 182 | esac
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| 183 | changequote([,])dnl
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| 184 | ])
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| 185 | LIBS="$am_save_LIBS"
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| 186 | ])
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| 187 | case "$am_cv_func_iconv_works" in
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| 188 | *no) am_func_iconv=no am_cv_lib_iconv=no ;;
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| 189 | *) am_func_iconv=yes ;;
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| 190 | esac
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| 191 | else
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| 192 | am_func_iconv=no am_cv_lib_iconv=no
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| 193 | fi
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| 194 | if test "$am_func_iconv" = yes; then
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| 195 | AC_DEFINE([HAVE_ICONV], [1],
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| 196 | [Define if you have the iconv() function and it works.])
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| 197 | fi
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| 198 | if test "$am_cv_lib_iconv" = yes; then
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| 199 | AC_MSG_CHECKING([how to link with libiconv])
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| 200 | AC_MSG_RESULT([$LIBICONV])
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| 201 | else
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| 202 | dnl If $LIBICONV didn't lead to a usable library, we don't need $INCICONV
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| 203 | dnl either.
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| 204 | CPPFLAGS="$am_save_CPPFLAGS"
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| 205 | LIBICONV=
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| 206 | LTLIBICONV=
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| 207 | fi
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| 208 | AC_SUBST([LIBICONV])
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| 209 | AC_SUBST([LTLIBICONV])
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| 210 | ])
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| 211 |
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| 212 | dnl Define AM_ICONV using AC_DEFUN_ONCE for Autoconf >= 2.64, in order to
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| 213 | dnl avoid warnings like
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| 214 | dnl "warning: AC_REQUIRE: `AM_ICONV' was expanded before it was required".
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| 215 | dnl This is tricky because of the way 'aclocal' is implemented:
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| 216 | dnl - It requires defining an auxiliary macro whose name ends in AC_DEFUN.
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| 217 | dnl Otherwise aclocal's initial scan pass would miss the macro definition.
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| 218 | dnl - It requires a line break inside the AC_DEFUN_ONCE and AC_DEFUN expansions.
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| 219 | dnl Otherwise aclocal would emit many "Use of uninitialized value $1"
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| 220 | dnl warnings.
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| 221 | m4_define([gl_iconv_AC_DEFUN],
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| 222 | m4_version_prereq([2.64],
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| 223 | [[AC_DEFUN_ONCE(
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| 224 | [$1], [$2])]],
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| 225 | [m4_ifdef([gl_00GNULIB],
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| 226 | [[AC_DEFUN_ONCE(
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| 227 | [$1], [$2])]],
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| 228 | [[AC_DEFUN(
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| 229 | [$1], [$2])]])]))
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| 230 | gl_iconv_AC_DEFUN([AM_ICONV],
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| 231 | [
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| 232 | AM_ICONV_LINK
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| 233 | if test "$am_cv_func_iconv" = yes; then
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| 234 | AC_MSG_CHECKING([for iconv declaration])
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| 235 | AC_CACHE_VAL([am_cv_proto_iconv], [
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| 236 | AC_COMPILE_IFELSE(
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| 237 | [AC_LANG_PROGRAM(
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| 238 | [[
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| 239 | #include <stdlib.h>
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| 240 | #include <iconv.h>
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| 241 | extern
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| 242 | #ifdef __cplusplus
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| 243 | "C"
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| 244 | #endif
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| 245 | #if defined(__STDC__) || defined(_MSC_VER) || defined(__cplusplus)
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| 246 | size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
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| 247 | #else
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| 248 | size_t iconv();
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| 249 | #endif
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| 250 | ]],
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| 251 | [[]])],
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| 252 | [am_cv_proto_iconv_arg1=""],
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| 253 | [am_cv_proto_iconv_arg1="const"])
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| 254 | am_cv_proto_iconv="extern size_t iconv (iconv_t cd, $am_cv_proto_iconv_arg1 char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);"])
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| 255 | am_cv_proto_iconv=`echo "[$]am_cv_proto_iconv" | tr -s ' ' | sed -e 's/( /(/'`
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| 256 | AC_MSG_RESULT([
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| 257 | $am_cv_proto_iconv])
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| 258 | AC_DEFINE_UNQUOTED([ICONV_CONST], [$am_cv_proto_iconv_arg1],
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| 259 | [Define as const if the declaration of iconv() needs const.])
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| 260 | dnl Also substitute ICONV_CONST in the gnulib generated <iconv.h>.
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| 261 | m4_ifdef([gl_ICONV_H_DEFAULTS],
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| 262 | [AC_REQUIRE([gl_ICONV_H_DEFAULTS])
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| 263 | if test -n "$am_cv_proto_iconv_arg1"; then
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| 264 | ICONV_CONST="const"
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| 265 | fi
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| 266 | ])
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| 267 | fi
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| 268 | ])
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