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[/] [openrisc/] [trunk/] [gnu-src/] [gdb-6.8/] [config/] [unwind_ipinfo.m4] - Diff between revs 157 and 225

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dnl
dnl
dnl Check whether _Unwind_GetIPInfo is available.
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
dnl
 
 
AC_DEFUN([GCC_CHECK_UNWIND_GETIPINFO], [
AC_DEFUN([GCC_CHECK_UNWIND_GETIPINFO], [
  AC_LANG_SAVE
  AC_ARG_WITH(system-libunwind,
  AC_LANG_CPLUSPLUS
  [  --with-system-libunwind use installed libunwind])
  ac_save_CXXFLAGS="$CXXFLAGS"
  # If system-libunwind was not specifically set, pick a default setting.
  CXXFLAGS="$CXXFLAGS -fno-exceptions"
  if test x$with_system_libunwind = x; then
  AC_MSG_CHECKING([for _Unwind_GetIPInfo])
    case ${target} in
  AC_CACHE_VAL(gcc_cv_getipinfo, [
      ia64-*-hpux*) with_system_libunwind=yes ;;
  AC_TRY_LINK([extern "C" { extern void _Unwind_GetIPInfo(); }],
      *) with_system_libunwind=no ;;
      [_Unwind_GetIPInfo();],
    esac
      [gcc_cv_getipinfo=yes],
  fi
      [gcc_cv_getipinfo=no])
  # Based on system-libunwind and target, do we have ipinfo?
  ])
  if  test x$with_system_libunwind = xyes; then
  if test $gcc_cv_getipinfo = yes; 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$have_unwind_getipinfo = xyes; then
    AC_DEFINE(HAVE_GETIPINFO, 1, [Define if _Unwind_GetIPInfo is available.])
    AC_DEFINE(HAVE_GETIPINFO, 1, [Define if _Unwind_GetIPInfo is available.])
  fi
  fi
  AC_MSG_RESULT($gcc_cv_getipinfo)
 
  CXXFLAGS="$ac_save_CXXFLAGS"
 
  AC_LANG_RESTORE
 
])
])
 
 
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