Hi David,
I submitted a bug report: http://www.cmake.org/Bug/view.php?id=9851
Best regards,
Marcel Loose.
On Thu, 2009-11-05 at 11:14 -0500, David Cole wrote:
> The problem is that srand is called *each* time that STRING(RANDOM is
> invoked... And it is based on the current time stamp to the nearest
> second. (Not exactly random if it's exactly correlated to what second
> it currently is...)
>
> I agree, this is a bug.
>
> Would you submit a bug report in the bug tracker?
>
> Would anyone object to changing this to call srand only on the very
> first call to STRING(RANDOM in a given invocation of cmake? (Or does
> somebody have a better suggestion? Perhaps passing the seed value in
> as an optional parameter...?)
>
>
> Thx,
> David
>
>
> On Thu, Nov 5, 2009 at 8:41 AM, Marcel Loose <lo...@astron.nl> wrote:
> Hi all,
>
> I expected that string(RANDOM...) would produce a different
> string each
> time it is invoked. Turns out that this string is only
> different between
> different cmake runs. This is not what I expected. IMHO this
> is a bug,
> either in the code, or in the documentation.
>
> $ cat ../CMakeLists.txt
> project(Dummy NONE)
> cmake_minimum_required(VERSION 2.6)
> string(RANDOM a)
> string(RANDOM b)
> message(STATUS "a=${a}")
> message(STATUS "b=${b}")
>
> $ cmake ..
> -- a=PgDGb
> -- b=PgDGb
> -- Configuring done
> -- Generating done
> -- Build files have been written to: /tmp/loose/cmake/build
>
>
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