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
])

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