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# iconv.m4 serial AM4 (gettext-0.11.3) |
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dnl Copyright (C) 2000-2002 Free Software Foundation, Inc. |
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dnl This file is free software, distributed under the terms of the GNU |
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dnl General Public License. As a special exception to the GNU General |
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dnl Public License, this file may be distributed as part of a program |
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dnl that contains a configuration script generated by Autoconf, under |
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dnl the same distribution terms as the rest of that program. |
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dnl From Bruno Haible. |
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AC_DEFUN([AM_ICONV_LINKFLAGS_BODY], |
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[ |
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dnl Prerequisites of AC_LIB_LINKFLAGS_BODY. |
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AC_REQUIRE([AC_LIB_PREPARE_PREFIX]) |
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AC_REQUIRE([AC_LIB_RPATH]) |
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dnl Search for libiconv and define LIBICONV, LTLIBICONV and INCICONV |
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dnl accordingly. |
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AC_LIB_LINKFLAGS_BODY([iconv]) |
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]) |
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AC_DEFUN([AM_ICONV_LINK], |
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[ |
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dnl Some systems have iconv in libc, some have it in libiconv (OSF/1 and |
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dnl those with the standalone portable GNU libiconv installed). |
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dnl Search for libiconv and define LIBICONV, LTLIBICONV and INCICONV |
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dnl accordingly. |
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AC_REQUIRE([AM_ICONV_LINKFLAGS_BODY]) |
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dnl Add $INCICONV to CPPFLAGS before performing the following checks, |
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dnl because if the user has installed libiconv and not disabled its use |
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dnl via --without-libiconv-prefix, he wants to use it. The first |
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dnl AC_TRY_LINK will then fail, the second AC_TRY_LINK will succeed. |
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am_save_CPPFLAGS="$CPPFLAGS" |
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AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCICONV]) |
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AC_CACHE_CHECK(for iconv, am_cv_func_iconv, [ |
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am_cv_func_iconv="no, consider installing GNU libiconv" |
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am_cv_lib_iconv=no |
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AC_TRY_LINK([#include <stdlib.h> |
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#include <iconv.h>], |
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[iconv_t cd = iconv_open("",""); |
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iconv(cd,NULL,NULL,NULL,NULL); |
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iconv_close(cd);], |
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am_cv_func_iconv=yes) |
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if test "$am_cv_func_iconv" != yes; then |
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am_save_LIBS="$LIBS" |
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LIBS="$LIBS $LIBICONV" |
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AC_TRY_LINK([#include <stdlib.h> |
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#include <iconv.h>], |
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[iconv_t cd = iconv_open("",""); |
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iconv(cd,NULL,NULL,NULL,NULL); |
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iconv_close(cd);], |
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am_cv_lib_iconv=yes |
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am_cv_func_iconv=yes) |
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LIBS="$am_save_LIBS" |
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fi |
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]) |
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if test "$am_cv_func_iconv" = yes; then |
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AC_DEFINE(HAVE_ICONV, 1, [Define if you have the iconv() function.]) |
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fi |
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if test "$am_cv_lib_iconv" = yes; then |
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AC_MSG_CHECKING([how to link with libiconv]) |
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AC_MSG_RESULT([$LIBICONV]) |
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else |
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dnl If $LIBICONV didn't lead to a usable library, we don't need $INCICONV |
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dnl either. |
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CPPFLAGS="$am_save_CPPFLAGS" |
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LIBICONV= |
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LTLIBICONV= |
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fi |
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AC_SUBST(LIBICONV) |
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AC_SUBST(LTLIBICONV) |
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]) |
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AC_DEFUN([AM_ICONV], |
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[ |
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AM_ICONV_LINK |
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if test "$am_cv_func_iconv" = yes; then |
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AC_MSG_CHECKING([for iconv declaration]) |
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AC_CACHE_VAL(am_cv_proto_iconv, [ |
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AC_TRY_COMPILE([ |
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#include <stdlib.h> |
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#include <iconv.h> |
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extern |
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#ifdef __cplusplus |
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"C" |
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#endif |
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#if defined(__STDC__) || defined(__cplusplus) |
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size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft); |
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#else |
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size_t iconv(); |
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#endif |
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], [], am_cv_proto_iconv_arg1="", am_cv_proto_iconv_arg1="const") |
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am_cv_proto_iconv="extern size_t iconv (iconv_t cd, $am_cv_proto_iconv_arg1 char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);"]) |
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am_cv_proto_iconv=`echo "[$]am_cv_proto_iconv" | tr -s ' ' | sed -e 's/( /(/'` |
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AC_MSG_RESULT([$]{ac_t:- |
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}[$]am_cv_proto_iconv) |
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AC_DEFINE_UNQUOTED(ICONV_CONST, $am_cv_proto_iconv_arg1, |
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[Define as const if the declaration of iconv() needs const.]) |
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fi |
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]) |
