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215 lines
7.3 KiB
215 lines
7.3 KiB
# iconv.m4 serial 11 (gettext-0.18.1)
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dnl Copyright (C) 2000-2002, 2007-2010 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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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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AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
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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 "$am_cv_func_iconv" = yes; then
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AC_CACHE_CHECK([for working iconv], [am_cv_func_iconv_works], [
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dnl This tests against bugs in AIX 5.1, HP-UX 11.11, Solaris 10.
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am_save_LIBS="$LIBS"
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if test $am_cv_lib_iconv = yes; then
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LIBS="$LIBS $LIBICONV"
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fi
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AC_TRY_RUN([
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#include <iconv.h>
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#include <string.h>
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int main ()
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{
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/* Test against AIX 5.1 bug: Failures are not distinguishable from successful
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returns. */
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{
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iconv_t cd_utf8_to_88591 = iconv_open ("ISO8859-1", "UTF-8");
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if (cd_utf8_to_88591 != (iconv_t)(-1))
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{
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static const char input[] = "\342\202\254"; /* EURO SIGN */
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char buf[10];
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const char *inptr = input;
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size_t inbytesleft = strlen (input);
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char *outptr = buf;
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size_t outbytesleft = sizeof (buf);
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size_t res = iconv (cd_utf8_to_88591,
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(char **) &inptr, &inbytesleft,
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&outptr, &outbytesleft);
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if (res == 0)
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return 1;
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}
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}
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/* Test against Solaris 10 bug: Failures are not distinguishable from
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successful returns. */
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{
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iconv_t cd_ascii_to_88591 = iconv_open ("ISO8859-1", "646");
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if (cd_ascii_to_88591 != (iconv_t)(-1))
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{
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static const char input[] = "\263";
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char buf[10];
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const char *inptr = input;
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size_t inbytesleft = strlen (input);
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char *outptr = buf;
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size_t outbytesleft = sizeof (buf);
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size_t res = iconv (cd_ascii_to_88591,
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(char **) &inptr, &inbytesleft,
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&outptr, &outbytesleft);
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if (res == 0)
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return 1;
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}
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}
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#if 0 /* This bug could be worked around by the caller. */
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/* Test against HP-UX 11.11 bug: Positive return value instead of 0. */
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{
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iconv_t cd_88591_to_utf8 = iconv_open ("utf8", "iso88591");
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if (cd_88591_to_utf8 != (iconv_t)(-1))
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{
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static const char input[] = "\304rger mit b\366sen B\374bchen ohne Augenma\337";
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char buf[50];
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const char *inptr = input;
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size_t inbytesleft = strlen (input);
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char *outptr = buf;
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size_t outbytesleft = sizeof (buf);
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size_t res = iconv (cd_88591_to_utf8,
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(char **) &inptr, &inbytesleft,
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&outptr, &outbytesleft);
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if ((int)res > 0)
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return 1;
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}
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}
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#endif
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/* Test against HP-UX 11.11 bug: No converter from EUC-JP to UTF-8 is
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provided. */
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if (/* Try standardized names. */
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iconv_open ("UTF-8", "EUC-JP") == (iconv_t)(-1)
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/* Try IRIX, OSF/1 names. */
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&& iconv_open ("UTF-8", "eucJP") == (iconv_t)(-1)
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/* Try AIX names. */
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&& iconv_open ("UTF-8", "IBM-eucJP") == (iconv_t)(-1)
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/* Try HP-UX names. */
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&& iconv_open ("utf8", "eucJP") == (iconv_t)(-1))
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return 1;
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return 0;
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}], [am_cv_func_iconv_works=yes], [am_cv_func_iconv_works=no],
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[case "$host_os" in
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aix* | hpux*) am_cv_func_iconv_works="guessing no" ;;
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*) am_cv_func_iconv_works="guessing yes" ;;
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esac])
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LIBS="$am_save_LIBS"
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])
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case "$am_cv_func_iconv_works" in
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*no) am_func_iconv=no am_cv_lib_iconv=no ;;
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*) am_func_iconv=yes ;;
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esac
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else
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am_func_iconv=no am_cv_lib_iconv=no
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fi
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if test "$am_func_iconv" = yes; then
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AC_DEFINE([HAVE_ICONV], [1],
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[Define if you have the iconv() function and it works.])
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fi
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if test "$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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dnl Define AM_ICONV using AC_DEFUN_ONCE for Autoconf >= 2.64, in order to
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dnl avoid warnings like
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dnl "warning: AC_REQUIRE: `AM_ICONV' was expanded before it was required".
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dnl This is tricky because of the way 'aclocal' is implemented:
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dnl - It requires defining an auxiliary macro whose name ends in AC_DEFUN.
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dnl Otherwise aclocal's initial scan pass would miss the macro definition.
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dnl - It requires a line break inside the AC_DEFUN_ONCE and AC_DEFUN expansions.
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dnl Otherwise aclocal would emit many "Use of uninitialized value $1"
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dnl warnings.
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m4_define([gl_iconv_AC_DEFUN],
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m4_version_prereq([2.64],
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[[AC_DEFUN_ONCE(
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[$1], [$2])]],
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[[AC_DEFUN(
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[$1], [$2])]]))
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gl_iconv_AC_DEFUN([AM_ICONV],
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[
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AM_ICONV_LINK
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if test "$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([
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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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])
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