[SciPy-user] installation on fedora core 4

Ryan Krauss ryanlists at gmail.com
Mon Oct 10 11:57:38 CDT 2005


I left out the crucial 3 in my previous post:
I have scipy installed and built from source on a fedora core >>3<<
installation

On 10/10/05, Ryan Krauss <ryanlists at gmail.com> wrote:
> Thanks for this clarification Stephen.  It saves me a lot of pain
> continuing to try and do what cannot currently be done.
>
> As another potential work around, I have scipy installed and built
> from source on a fedora core installation (with python 2.4 - I am
> almost sure).  Can I in any way use it to get scipy working in fedora
> core 4?
>
> Ryan
>
> On 10/10/05, Stephen Walton <stephen.walton at csun.edu> wrote:
> > Ryan Krauss wrote:
> >
> > >Do I need to speficy a version of gcc other than 4.0?
> > >
> > This thread came up in scipy-dev, and I've posted here before, but to
> > clarify again:
> >
> > In an all-default configuration, it is not presently possible to build a
> > working scipy on Fedora Core 4, either old or new.  There is a bug in
> > gfortran which causes it to mis-compile the i1mach, r1mach, and d1mach
> > functions which are at the bottom of much of the Fortran code in scipy.
> > If you use g77 instead by using the appropriate compatibility RPMs
> > (compat-gcc-32-g77 and compat-libf2c-32), you'll find that gcc4 cannot
> > link to libg2c because it isn't in a directory which gcc4 searches.  I
> > haven't found a way of forcing a scipy build to use gcc 3.2.3 (the
> > compatibility version which is part of FC4).
> >
> > The only feasible workaround I've found is to use g77 on FC4 to build
> > scipy (and Numeric and numarray), and create symbolic links to libg2c.a
> > and libg2c.so so that gcc4 can find them.  That is, do the following:
> >
> > ln -s /usr/lib/gcc-lib/i386-redhat-linux/3.2.3/libg2c.so
> > /usr/lib/gcc/i386-redhat-linux/4.0.1
> > ln -s /usr/lib/gcc-lib/i386-redhat-linux/3.2.3/libg2c.a
> > /usr/lib/gcc/i386-redhat-linux/4.0.1
> >
> > This is not supported, use at your own risk, your mileage may vary,
> > results are not guaranteed, pressure RedHat to release a gcc 4.0.2
> > update for FC4 in which the gfortran bug is fixed.  Personally, I'm
> > using Absoft Fortran on gcc4;  if you're an educational institution,
> > Intel will let you download and use their Fortran compiler for free.
> > Both seem to work fine with newscipy and FC4.
> >
> >
> >
> > _______________________________________________
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> > SciPy-user at scipy.net
> > http://www.scipy.net/mailman/listinfo/scipy-user
> >
>



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