CGAL users discussion list

[Eric Berberich <>]

Joachim Reichel wrote:
> Hi,
>
> > I'm running on Mac OS X 10.6.5 Intel Core 2 Duo (64-bit) and I'm compiling
> > with g++ 4.2.1. Boost has been downloaded following the link provided in
> > the CGAL installation manual and the version is 1.40.0.
> > I'm also attaching the hw_rounding.hpp lines.
> > Thanks
> >
> >
> > #ifndef BOOST_NUMERIC_INTERVAL_HW_ROUNDING_HPP
> > #define BOOST_NUMERIC_INTERVAL_HW_ROUNDING_HPP
> > #include <boost/numeric/interval/rounding.hpp>
> > #include <boost/numeric/interval/rounded_arith.hpp>
> >
> > #define BOOST_NUMERIC_INTERVAL_NO_HARDWARE
> >
> > // define appropriate specialization of rounding_control for built-in types
> > #if defined(__x86_64__) && defined(__USE_ISOC99)
> > #  include <boost/numeric/interval/detail/c99_rounding_control.hpp>
>
> looking at the conditions of this include it seems that __USE_ISOC99 is not
> defined. Can you try the compiler option -std=c99 ?

Thanks Joachim for pointing out. Indeed on Mac OS this option is needed.

eriC