| 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 | 
 | ]) |