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dnl @synopsis XERCES_TRANSCODER_SELECTION
dnl
dnl Determines the which transcoder to use
dnl
dnl @category C
dnl @author James Berry
dnl @version 2005-05-23
dnl @license AllPermissive
dnl
dnl $Id$
AC_DEFUN([XERCES_TRANSCODER_SELECTION],
[
######################################################
# Test for availability of each transcoder on this host.
# For each transcoder that's available, and hasn't been disabled, add it to our list.
# If the transcoder has been explicitly "enable"d, then vote for it strongly,
# in upper case.
######################################################
tc_list=
# Check for GNU iconv support
no_GNUiconv=false
AC_CHECK_HEADERS([iconv.h wchar.h string.h stdlib.h stdio.h ctype.h locale.h errno.h], [], [no_GNUiconv=true])
# The code in iconv needs just on of these include files
AC_CHECK_HEADER([endian.h],
[],
[
AC_CHECK_HEADER([machine/endian.h],
[],
[
AC_CHECK_HEADER([arpa/nameser_compat.h],
[],
[no_GNUiconv=true])
])
])
AC_CHECK_FUNCS([iconv_open iconv_close iconv], [], [no_GNUiconv=true])
AC_MSG_CHECKING([whether we can support the GNU iconv Transcoder])
list_add=
AS_IF([! $no_GNUiconv], [
AC_ARG_ENABLE([transcoder-gnuiconv],
AS_HELP_STRING([--enable-transcoder-gnuiconv],
[Enable GNU iconv-based transcoder support]),
[AS_IF([test x"$enableval" = xyes],
[list_add=GNUICONV])],
[list_add=gnuiconv])
])
AS_IF([test x"$list_add" != x],
[tc_list="$tc_list -$list_add-"; AC_MSG_RESULT(yes)],
[AC_MSG_RESULT(no)]
)
# Check for iconv support
no_iconv=false
AC_CHECK_HEADERS([wchar.h], [], [no_iconv=true])
AC_CHECK_FUNCS([mblen wcstombs mbstowcs], [], [no_iconv=true])
AC_MSG_CHECKING([whether we can support the iconv Transcoder])
list_add=
AS_IF([! $no_iconv], [
AC_ARG_ENABLE([transcoder-iconv],
AS_HELP_STRING([--enable-transcoder-iconv],
[Enable iconv-based transcoder support]),
[AS_IF([test x"$enableval" = xyes],
[list_add=ICONV])],
[list_add=iconv])
])
AS_IF([test x"$list_add" != x],
[tc_list="$tc_list -$list_add-"; AC_MSG_RESULT(yes)],
[AC_MSG_RESULT(no)]
)
# Check for ICU
AC_REQUIRE([XERCES_ICU_PREFIX])
AC_MSG_CHECKING([whether we can support the ICU Transcoder])
list_add=
AS_IF([test x"$xerces_cv_icu_present" != x"no"], [
AC_ARG_ENABLE([transcoder-icu],
AS_HELP_STRING([--enable-transcoder-icu],
[Enable icu-based transcoder support]),
[AS_IF([test x"$enableval" = xyes],
[list_add=ICU])],
[list_add=icu])
])
AS_IF([test x"$list_add" != x],
[tc_list="$tc_list -$list_add-"; AC_MSG_RESULT(yes)],
[AC_MSG_RESULT(no)]
)
# Check for platform-specific transcoders
list_add=
case $host_os in
darwin*)
AC_MSG_CHECKING([whether we can support the MacOSUnicodeConverter Transcoder])
AS_IF([test x"$ac_cv_header_CoreServices_CoreServices_h" = xyes], [
AC_ARG_ENABLE([transcoder-macosunicodeconverter],
AS_HELP_STRING([--enable-transcoder-macosunicodeconverter],
[Enable MacOSUnicodeConverter-based transcoder support]),
[AS_IF([test x"$enableval" = xyes],
[list_add=MACOSUNICODECONVERTER])],
[list_add=macosunicodeconverter])
])
AS_IF([test x"$list_add" != x],
[tc_list="$tc_list -$list_add-"; AC_MSG_RESULT(yes)],
[AC_MSG_RESULT(no)]
)
;;
windows* | mingw*)
AC_MSG_CHECKING([whether we can support the Windows Transcoder])
AC_ARG_ENABLE([transcoder-windows],
AS_HELP_STRING([--enable-transcoder-windows],
[Enable Windows-based transcoder support]),
[AS_IF([test x"$enableval" = xyes],
[list_add=WINDOWS])],
[list_add=windows])
AS_IF([test x"$list_add" != x],
[tc_list="$tc_list -$list_add-"; AC_MSG_RESULT(yes)],
[AC_MSG_RESULT(no)]
)
;;
cygwin*)
# Only add it to the list if the user explicitly asked
# for it.
#
AC_MSG_CHECKING([whether to use the Windows Transcoder])
AC_ARG_ENABLE([transcoder-windows],
AS_HELP_STRING([--enable-transcoder-windows],
[Enable Windows-based transcoder support]),
[AS_IF([test x"$enableval" = xyes],
[list_add=WINDOWS])])
AS_IF([test x"$list_add" != x],
[tc_list="$tc_list -$list_add-"; AC_MSG_RESULT(yes)],
[AC_MSG_RESULT(no)]
)
;;
esac
# TODO: Tests for additional transcoders
######################################################
# Determine which transcoder to use.
#
# We do this in two passes. Transcoders that have been enabled with "yes",
# and which start out in upper case, get the top priority on the first pass.
# On the second pass, we consider those which are simply available, but
# which were not "disable"d (these won't even be in our list).
######################################################
transcoder=
az_lower=abcdefghijklmnopqrstuvwxyz
az_upper=ABCDEFGHIJKLMNOPQRSTUVWXYZ
AC_MSG_CHECKING([for which Transcoder to use (choices:$tc_list)])
for i in 1 2; do
# Swap upper/lower case in the tc_list. Cannot use tr ranges
# because of the portability issues.
#
tc_list=`echo $tc_list | tr "$az_lower$az_upper" "$az_upper$az_lower"`
# Check for each transcoder, in implicit rank order
case $tc_list in
*-icu-*)
transcoder=icu
AC_DEFINE([XERCES_USE_TRANSCODER_ICU], 1, [Define to use the ICU-based transcoder])
LIBS="${LIBS} ${xerces_cv_icu_libs}"
break
;;
*-macosunicodeconverter-*)
transcoder=macosunicodeconverter
AC_DEFINE([XERCES_USE_TRANSCODER_MACOSUNICODECONVERTER], 1, [Define to use the Mac OS UnicodeConverter-based transcoder])
XERCES_LINK_DARWIN_FRAMEWORK([CoreServices])
break
;;
*-gnuiconv-*)
transcoder=gnuiconv
AC_DEFINE([XERCES_USE_TRANSCODER_GNUICONV], 1, [Define to use the GNU iconv transcoder])
break
;;
*-windows-*)
transcoder=windows
AC_DEFINE([XERCES_USE_TRANSCODER_WINDOWS], 1, [Define to use the Windows transcoder])
break
;;
*-iconv-*)
transcoder=iconv
AC_DEFINE([XERCES_USE_TRANSCODER_ICONV], 1, [Define to use the iconv transcoder])
break
;;
*)
AS_IF([test $i -eq 2], [
AC_MSG_RESULT([none])
AC_MSG_ERROR([Xerces cannot function without a transcoder])
]
)
;;
esac
done
if test x"$transcoder" != x; then
AC_MSG_RESULT($transcoder)
fi
# Define the auto-make conditionals which determine what actually gets compiled
# Note that these macros can't be executed conditionally, which is why they're here, not above.
AM_CONDITIONAL([XERCES_USE_TRANSCODER_ICU], [test x"$transcoder" = xicu])
AM_CONDITIONAL([XERCES_USE_TRANSCODER_MACOSUNICODECONVERTER], [test x"$transcoder" = xmacosunicodeconverter])
AM_CONDITIONAL([XERCES_USE_TRANSCODER_GNUICONV], [test x"$transcoder" = xgnuiconv])
AM_CONDITIONAL([XERCES_USE_TRANSCODER_ICONV], [test x"$transcoder" = xiconv])
AM_CONDITIONAL([XERCES_USE_TRANSCODER_WINDOWS], [test x"$transcoder" = xwindows])
]
)
|
