CGAL users discussion list

[Peter Schüller <>]

Sylvain Pion wrote:
> Peter Schüller a écrit :
>
> > I have a problem building the latest CGAL-3.2.1. I have attached the
> > install.log
> >
> > I assume the problem is that on my setup GMP is detected as "supported"
> > and MPFR as "not supported".
> >
> > Because of GMP, include/CGAL/number_type_basic.h includes
> > include/CGAL/Gmpz.h
> >
> > Gmpz.h unconditionally includes <mpfr.h> which leads to the errors.
>
>
> Yes, if you select GMP support, you must have MPFR as well.
>
> > CGAL-3.1 built without problems.
>
>
> Indeed, this is a change compared to 3.1.

The problem I have is: I did not select GMP to be built in, and I did 
not select MPFR to be built in.

I simply started ./install_cgal -i and it came up with autodetected 
settings of "GMP/GMPXX activated, MPFR deactivated".

If it is not possible to build CGAL with this setting, in my opinion the 
autodetection should not allow it.

But I was able to build the libraries by manually deactivating GMP/GMPXX 
and CORE support.