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# iconv.m4 serial 19 (gettext-0.18.2) |
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dnl Copyright (C) 2000-2002, 2007-2014 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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|
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dnl From Bruno Haible. |
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|
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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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|
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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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|
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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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|
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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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|
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dnl Add $INCICONV to CPPFLAGS before performing the following checks, |
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dnl because if the user has installed libiconv and not disabled its use |
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dnl via --without-libiconv-prefix, he wants to use it. The first |
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dnl AC_LINK_IFELSE will then fail, the second AC_LINK_IFELSE will succeed. |
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am_save_CPPFLAGS="$CPPFLAGS" |
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AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCICONV]) |
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|
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AC_CACHE_CHECK([for iconv], [am_cv_func_iconv], [ |
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am_cv_func_iconv="no, consider installing GNU libiconv" |
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am_cv_lib_iconv=no |
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AC_LINK_IFELSE( |
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[AC_LANG_PROGRAM( |
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[[ |
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#include <stdlib.h> |
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#include <iconv.h> |
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]], |
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[[iconv_t cd = iconv_open("",""); |
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iconv(cd,NULL,NULL,NULL,NULL); |
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iconv_close(cd);]])], |
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[am_cv_func_iconv=yes]) |
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if test "$am_cv_func_iconv" != yes; then |
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am_save_LIBS="$LIBS" |
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LIBS="$LIBS $LIBICONV" |
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AC_LINK_IFELSE( |
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[AC_LANG_PROGRAM( |
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[[ |
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#include <stdlib.h> |
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#include <iconv.h> |
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]], |
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[[iconv_t cd = iconv_open("",""); |
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iconv(cd,NULL,NULL,NULL,NULL); |
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iconv_close(cd);]])], |
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[am_cv_lib_iconv=yes] |
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[am_cv_func_iconv=yes]) |
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LIBS="$am_save_LIBS" |
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fi |
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]) |
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if test "$am_cv_func_iconv" = yes; then |
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AC_CACHE_CHECK([for working iconv], [am_cv_func_iconv_works], [ |
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dnl This tests against bugs in AIX 5.1, AIX 6.1..7.1, HP-UX 11.11, |
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dnl Solaris 10. |
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am_save_LIBS="$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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am_cv_func_iconv_works=no |
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for ac_iconv_const in '' 'const'; do |
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AC_RUN_IFELSE( |
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[AC_LANG_PROGRAM( |
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[[ |
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#include <iconv.h> |
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#include <string.h> |
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|
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#ifndef ICONV_CONST |
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# define ICONV_CONST $ac_iconv_const |
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#endif |
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]], |
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[[int result = 0; |
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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 ICONV_CONST char input[] = "\342\202\254"; /* EURO SIGN */ |
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char buf[10]; |
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ICONV_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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&inptr, &inbytesleft, |
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&outptr, &outbytesleft); |
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if (res == 0) |
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result |= 1; |
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iconv_close (cd_utf8_to_88591); |
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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 ICONV_CONST char input[] = "\263"; |
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char buf[10]; |
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ICONV_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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&inptr, &inbytesleft, |
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&outptr, &outbytesleft); |
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if (res == 0) |
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result |= 2; |
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iconv_close (cd_ascii_to_88591); |
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} |
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} |
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/* Test against AIX 6.1..7.1 bug: Buffer overrun. */ |
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{ |
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iconv_t cd_88591_to_utf8 = iconv_open ("UTF-8", "ISO-8859-1"); |
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if (cd_88591_to_utf8 != (iconv_t)(-1)) |
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{ |
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static ICONV_CONST char input[] = "\304"; |
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static char buf[2] = { (char)0xDE, (char)0xAD }; |
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ICONV_CONST char *inptr = input; |
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size_t inbytesleft = 1; |
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char *outptr = buf; |
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size_t outbytesleft = 1; |
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size_t res = iconv (cd_88591_to_utf8, |
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&inptr, &inbytesleft, |
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&outptr, &outbytesleft); |
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if (res != (size_t)(-1) || outptr - buf > 1 || buf[1] != (char)0xAD) |
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result |= 4; |
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iconv_close (cd_88591_to_utf8); |
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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 ICONV_CONST char input[] = "\304rger mit b\366sen B\374bchen ohne Augenma\337"; |
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char buf[50]; |
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ICONV_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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&inptr, &inbytesleft, |
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&outptr, &outbytesleft); |
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if ((int)res > 0) |
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result |= 8; |
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iconv_close (cd_88591_to_utf8); |
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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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result |= 16; |
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return result; |
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]])], |
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[am_cv_func_iconv_works=yes], , |
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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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test "$am_cv_func_iconv_works" = no || break |
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done |
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LIBS="$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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|
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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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[m4_ifdef([gl_00GNULIB], |
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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_COMPILE_IFELSE( |
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[AC_LANG_PROGRAM( |
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[[ |
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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(_MSC_VER) || 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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]], |
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[[]])], |
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[am_cv_proto_iconv_arg1=""], |
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[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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dnl Also substitute ICONV_CONST in the gnulib generated <iconv.h>. |
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m4_ifdef([gl_ICONV_H_DEFAULTS], |
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[AC_REQUIRE([gl_ICONV_H_DEFAULTS]) |
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if test -n "$am_cv_proto_iconv_arg1"; then |
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ICONV_CONST="const" |
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fi |
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]) |
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fi |
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]) |
