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dnl gettext setup

dnl AG_GST_GETTEXT([gettext-package])
dnl defines GETTEXT_PACKAGE and LOCALEDIR

AC_DEFUN([AG_GST_GETTEXT],
[
  if test "$USE_NLS" = "yes"; then
    GETTEXT_PACKAGE=[$1]
  else
    GETTEXT_PACKAGE=[NULL]
  fi
  AC_SUBST(GETTEXT_PACKAGE)
  AC_DEFINE_UNQUOTED([GETTEXT_PACKAGE], "$GETTEXT_PACKAGE",
                     [gettext package name])

  dnl make sure po/Makevars is kept in sync with GETTEXT_PACKAGE
  if test -e "${srcdir}/po/Makevars"; then
    if ! grep -e "$1" "${srcdir}/po/Makevars"; then
      AC_MSG_ERROR([DOMAIN in po/Makevars does not match GETTEXT_PACKAGE $1])
    fi
  fi

  dnl define LOCALEDIR in config.h
  AS_AC_EXPAND(LOCALEDIR, $datadir/locale)
  AC_DEFINE_UNQUOTED([LOCALEDIR], "$LOCALEDIR",
                     [gettext locale dir])
])