dnl This Source Code Form is subject to the terms of the Mozilla Public
dnl License, v. 2.0. If a copy of the MPL was not distributed with this
dnl file, You can obtain one at http://mozilla.org/MPL/2.0/.

dnl Set the MOZ_ICU_VERSION variable to denote the current version of the
dnl ICU library, as well as a few other things.

AC_DEFUN([MOZ_CONFIG_ICU], [

ICU_LIB_NAMES=

dnl We always use ICU.
USE_ICU=1

dnl Settings for the implementation of the ECMAScript Internationalization API
if test -n "$USE_ICU"; then
    icudir="$_topsrcdir/intl/icu/source"
    if test ! -d "$icudir"; then
        icudir="$_topsrcdir/../../intl/icu/source"
        if test ! -d "$icudir"; then
            AC_MSG_ERROR([Cannot find the ICU directory])
        fi
    fi

    version=`${TOOLCHAIN_PREFIX}sed -n 's/^[[[:space:]]]*#[[:space:]]*define[[:space:]][[:space:]]*U_ICU_VERSION_MAJOR_NUM[[:space:]][[:space:]]*\([0-9][0-9]*\)[[:space:]]*$/\1/p' "$icudir/common/unicode/uvernum.h"`
    if test x"$version" = x; then
       AC_MSG_ERROR([cannot determine icu version number from uvernum.h header file $lineno])
    fi
    MOZ_ICU_VERSION="$version"

    # TODO: the l is actually endian-dependent
    # We could make this set as 'l' or 'b' for little or big, respectively,
    # but we'd need to check in a big-endian version of the file.
    ICU_DATA_FILE="icudt${version}l.dat"

    dnl We won't build ICU data as a separate file when building
    dnl ICU as a shared library, as we need to fold the data into
    dnl the shared library in order for consumers like Spidermonkey
    dnl to use it without code duplication.
    if test -z "$MOZ_SHARED_ICU"; then
        MOZ_ICU_DATA_ARCHIVE=1
    else
        MOZ_ICU_DATA_ARCHIVE=
    fi
fi

AC_SUBST(MOZ_ICU_VERSION)
AC_SUBST(USE_ICU)
AC_SUBST(ICU_DATA_FILE)
AC_SUBST(MOZ_ICU_DATA_ARCHIVE)
AC_SUBST(MOZ_SHARED_ICU)

if test -n "$USE_ICU"; then
    if test -z "$YASM" -a -z "$GNU_AS" -a "$COMPILE_ENVIRONMENT"; then
      AC_MSG_ERROR([Building ICU requires either yasm or a GNU assembler. If you do not have either of those available for this platform you must use --without-intl-api])
    fi
    if test -z "$MOZ_SHARED_ICU"; then
       AC_DEFINE(U_STATIC_IMPLEMENTATION)
    fi
    dnl Source files that use ICU should have control over which parts of the ICU
    dnl namespace they want to use.
    AC_DEFINE(U_USING_ICU_NAMESPACE,0)
fi
])