On Mon, Aug 2, 2010 at 5:38 AM, Steffen Sledz <[email protected]> wrote:
>  ...
>  AC_CHECK_LIB([unwind], [_Unwind_Backtrace], [], [ AC_MSG_ERROR([*** Could 
> not find libunwind ***]) ])

_Unwind_Backtrace could be provided by other libraries as well. I'd
test for something specific to libunwind (eg: unw_step).

 -Arun

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