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