config/unwind_ipinfo.m4

   1 dnl
   2 dnl Check whether _Unwind_GetIPInfo is available.
   3 dnl
   4 AC_DEFUN([GCC_CHECK_UNWIND_GETIPINFO], [
   5   AC_LANG_SAVE
   6   AC_LANG_CPLUSPLUS
   7   ac_save_CXXFLAGS="$CXXFLAGS"
   8   CXXFLAGS="$CXXFLAGS -fno-exceptions"
   9   AC_MSG_CHECKING([for _Unwind_GetIPInfo])
  10   AC_CACHE_VAL(gcc_cv_getipinfo, [
  11   AC_TRY_LINK([extern "C" { extern void _Unwind_GetIPInfo(); }],
  12       [_Unwind_GetIPInfo();],
  13       [gcc_cv_getipinfo=yes],
  14       [gcc_cv_getipinfo=no])
  15   ])
  16   if test $gcc_cv_getipinfo = yes; then
  17     AC_DEFINE(HAVE_GETIPINFO, 1, [Define if _Unwind_GetIPInfo is available.])
  18   fi
  19   AC_MSG_RESULT($gcc_cv_getipinfo)
  20   CXXFLAGS="$ac_save_CXXFLAGS"
  21   AC_LANG_RESTORE
  22 ])