Xapian devel - Aug 2016 - configure error after GCC update

Hi,

I updated GCC from 4.7 to 4.9. Since then configure is failing with this
error:

checking if -lm is required for maths functions... configure: error: Failed
to link a C++ program using <cmath>
configure failed

Could someone tell what might be going wrong here and how to fix it?

Regards,
Ayush
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On Wed, Aug 10, 2016 at 04:53:22PM -0400, Ayush Tomar
wrote:
> I updated GCC from 4.7 to 4.9. Since then configure is failing with this
> error:
> 
> checking if -lm is required for maths functions... configure: error: Failed
> to link a C++ program using <cmath>
> configure failed
> 
> Could someone tell what might be going wrong here and how to fix it?
I don't know of any issues with using GCC 4.9.

If you look at config.log in the directory where the failing configure
script is, it'll show you the test program it tries to compile and how
it fails (look at the *END* of the log and work back).

Cheers,
    Olly