Re: GCC 4.7.2 build failure

[Jonathan Wakely <jwakely dot gcc at gmail dot com>]

On Feb 16, 2013 5:06 PM, "Bharath Ramesh" wrote:
>
> On Sat, Feb 16, 2013 at 02:02:29PM +0000, Jonathan Wakely wrote:
> > On 15 February 2013 14:07, Bharath Ramesh wrote:
> > >
> > > Fair enough. Here is my second attempt. Here are the commands I executed
> > > $ tar xvf /home/bramesh/downloads/gcc-4.7.2.tar.bz2
> > >
> > > $ cd gcc-4.7.2
> > > $ ./contrib/download_prerequisites
> > > $ wget ftp://gcc.gnu.org/pub/gcc/infrastructure/cloog-0.18.0.tar.gz
> > > $ tar xvf cloog-0.18.0.tar.gz
> > > $ ln -sf cloog-0.18.0 cloog
> >
> > The http://gcc.gnu.org/install/prerequisites.html does not say that
> > CLooG can be built by putting the sources in the GCC dir, the way GMP,
> > MPFR and MPC can be. Maybe it can, I don't know, but the docs don't
> > say it can be. ?Since doing that isn't working for you, maybe you
> > should try installing CLooG separately (which I think means installing
> > GMP separately)
>
> I thought it can because the Makefile.in has references to
> building ppl/cloog similar to gmp, mpfr and mpc. I realized that
> I was using an incorrect version of CLooG as that is the version
> required by current trunk and not gcc-4.7.2.

Ah yes. For 4.7.2 you need ppl too of course.

> I downgraded and hit
> another error. Based on my research of that error in the current
> status of GCC CLooG cannot be built in tree like gmp, mpfr or
> mpc. I was hoping that I would have a 3 stage optimized build for
> CLooG as well. Guess I was wrong.

The 3 stage bootstrap is not done to optimise things, you won't be
able to tell any performance difference if CLooG is built by gcc 4.4
or 4.7