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dnl

dnl Check whether _Unwind_GetIPInfo is available without doing a link

dnl test so we can use this with libstdc++-v3 and libjava.  Need to

dnl use $target to set defaults because automatic checking is not possible

dnl without a link test (and maybe even with a link test).

dnl

AC_DEFUN([GCC_CHECK_UNWIND_GETIPINFO], [

  AC_ARG_WITH(system-libunwind,

  [  --with-system-libunwind use installed libunwind])

  # If system-libunwind was not specifically set, pick a default setting.

  if test x$with_system_libunwind = x; then

    case ${target} in

      ia64-*-hpux*) with_system_libunwind=yes ;;

      *) with_system_libunwind=no ;;

    esac

  fi

  # Based on system-libunwind and target, do we have ipinfo?

  if  test x$with_system_libunwind = xyes; then

    case ${target} in

      ia64-*-*) have_unwind_getipinfo=no ;;

      *) have_unwind_getipinfo=yes ;;

    esac

  else

    # Darwin before version 9 does not have _Unwind_GetIPInfo.

    changequote(,)

    case ${target} in

      *-*-darwin[3-8]|*-*-darwin[3-8].*) have_unwind_getipinfo=no ;;

      *) have_unwind_getipinfo=yes ;;

    esac

    changequote([,])

  fi

  if test x$have_unwind_getipinfo = xyes; then

    AC_DEFINE(HAVE_GETIPINFO, 1, [Define if _Unwind_GetIPInfo is available.])

  fi

])