[SciPy-dev] building lib.lapack without optimization
pearu at scipy.org
Tue Nov 30 05:40:48 CST 2004
On Tue, 30 Nov 2004, Nils Wagner wrote:
> Pearu Peterson wrote:
>> Now try
>> rm -rf build
>> python setup_lapack.py build config_fc --noarch
>> This will use -O3 optimization but without architecture dependent
>> optimization flags.
>> Does it work?
> No, the same failures as before (with python setup_lapack.py build)
Ok, now try to reduce optimization level:
rm -rf build
python setup_lapack.py build config_fc --noarch --opt="-O2"
If that fails, then try --opt="-O", etc.
If you have found working optimization level, then remove --noarch flag to
see if architecture dependent flags are OK.
The goal is to find optimization flags for the given compiler
(i) that can be coded into scipy_distutils/gnufcompiler.py
(ii) and to use these optimization flags for building Fortran LAPACK
libraries needed for ATLAS.
>> What gcc version are you using?
> gcc version 3.3.3 (SuSE Linux)
Btw, I am using gcc 3.3.5 (Debian Sid) with no problems.
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