Ulrich Drepper | b08d5a8 | 2005-07-26 05:00:05 +0000 | [diff] [blame^] | 1 | # iconv.m4 serial AM4 (gettext-0.11.3) |
| 2 | dnl Copyright (C) 2000-2002 Free Software Foundation, Inc. |
| 3 | dnl This file is free software, distributed under the terms of the GNU |
| 4 | dnl General Public License. As a special exception to the GNU General |
| 5 | dnl Public License, this file may be distributed as part of a program |
| 6 | dnl that contains a configuration script generated by Autoconf, under |
| 7 | dnl the same distribution terms as the rest of that program. |
| 8 | |
| 9 | dnl From Bruno Haible. |
| 10 | |
| 11 | AC_DEFUN([AM_ICONV_LINKFLAGS_BODY], |
| 12 | [ |
| 13 | dnl Prerequisites of AC_LIB_LINKFLAGS_BODY. |
| 14 | AC_REQUIRE([AC_LIB_PREPARE_PREFIX]) |
| 15 | AC_REQUIRE([AC_LIB_RPATH]) |
| 16 | |
| 17 | dnl Search for libiconv and define LIBICONV, LTLIBICONV and INCICONV |
| 18 | dnl accordingly. |
| 19 | AC_LIB_LINKFLAGS_BODY([iconv]) |
| 20 | ]) |
| 21 | |
| 22 | AC_DEFUN([AM_ICONV_LINK], |
| 23 | [ |
| 24 | dnl Some systems have iconv in libc, some have it in libiconv (OSF/1 and |
| 25 | dnl those with the standalone portable GNU libiconv installed). |
| 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 $INCICONV to CPPFLAGS before performing the following checks, |
| 32 | dnl because if the user has installed libiconv and not disabled its use |
| 33 | dnl via --without-libiconv-prefix, he wants to use it. The first |
| 34 | dnl AC_TRY_LINK will then fail, the second AC_TRY_LINK will succeed. |
| 35 | am_save_CPPFLAGS="$CPPFLAGS" |
| 36 | AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCICONV]) |
| 37 | |
| 38 | AC_CACHE_CHECK(for iconv, am_cv_func_iconv, [ |
| 39 | am_cv_func_iconv="no, consider installing GNU libiconv" |
| 40 | am_cv_lib_iconv=no |
| 41 | AC_TRY_LINK([#include <stdlib.h> |
| 42 | #include <iconv.h>], |
| 43 | [iconv_t cd = iconv_open("",""); |
| 44 | iconv(cd,NULL,NULL,NULL,NULL); |
| 45 | iconv_close(cd);], |
| 46 | am_cv_func_iconv=yes) |
| 47 | if test "$am_cv_func_iconv" != yes; then |
| 48 | am_save_LIBS="$LIBS" |
| 49 | LIBS="$LIBS $LIBICONV" |
| 50 | AC_TRY_LINK([#include <stdlib.h> |
| 51 | #include <iconv.h>], |
| 52 | [iconv_t cd = iconv_open("",""); |
| 53 | iconv(cd,NULL,NULL,NULL,NULL); |
| 54 | iconv_close(cd);], |
| 55 | am_cv_lib_iconv=yes |
| 56 | am_cv_func_iconv=yes) |
| 57 | LIBS="$am_save_LIBS" |
| 58 | fi |
| 59 | ]) |
| 60 | if test "$am_cv_func_iconv" = yes; then |
| 61 | AC_DEFINE(HAVE_ICONV, 1, [Define if you have the iconv() function.]) |
| 62 | fi |
| 63 | if test "$am_cv_lib_iconv" = yes; then |
| 64 | AC_MSG_CHECKING([how to link with libiconv]) |
| 65 | AC_MSG_RESULT([$LIBICONV]) |
| 66 | else |
| 67 | dnl If $LIBICONV didn't lead to a usable library, we don't need $INCICONV |
| 68 | dnl either. |
| 69 | CPPFLAGS="$am_save_CPPFLAGS" |
| 70 | LIBICONV= |
| 71 | LTLIBICONV= |
| 72 | fi |
| 73 | AC_SUBST(LIBICONV) |
| 74 | AC_SUBST(LTLIBICONV) |
| 75 | ]) |
| 76 | |
| 77 | AC_DEFUN([AM_ICONV], |
| 78 | [ |
| 79 | AM_ICONV_LINK |
| 80 | if test "$am_cv_func_iconv" = yes; then |
| 81 | AC_MSG_CHECKING([for iconv declaration]) |
| 82 | AC_CACHE_VAL(am_cv_proto_iconv, [ |
| 83 | AC_TRY_COMPILE([ |
| 84 | #include <stdlib.h> |
| 85 | #include <iconv.h> |
| 86 | extern |
| 87 | #ifdef __cplusplus |
| 88 | "C" |
| 89 | #endif |
| 90 | #if defined(__STDC__) || defined(__cplusplus) |
| 91 | size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft); |
| 92 | #else |
| 93 | size_t iconv(); |
| 94 | #endif |
| 95 | ], [], am_cv_proto_iconv_arg1="", am_cv_proto_iconv_arg1="const") |
| 96 | am_cv_proto_iconv="extern size_t iconv (iconv_t cd, $am_cv_proto_iconv_arg1 char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);"]) |
| 97 | am_cv_proto_iconv=`echo "[$]am_cv_proto_iconv" | tr -s ' ' | sed -e 's/( /(/'` |
| 98 | AC_MSG_RESULT([$]{ac_t:- |
| 99 | }[$]am_cv_proto_iconv) |
| 100 | AC_DEFINE_UNQUOTED(ICONV_CONST, $am_cv_proto_iconv_arg1, |
| 101 | [Define as const if the declaration of iconv() needs const.]) |
| 102 | fi |
| 103 | ]) |