[SciPy-dev] [ANN] numscons 0.5.1: building scipy
Sat Mar 8 05:26:41 CST 2008
Mumscons 0.5.1 is available through pypi (eggs and tarballs). This
is the first version which can build the whole scipy source tree. To
build scipy with numscons, you should first get the code in the branch:
svn co http://svn.scipy.org/svn/scipy/branches/build_with_scons
And then build it like numpy:
python setupscons.py install
Technically speaking, you can build scipy with numscons above a numpy
build the standard way, but that's not a good idea (because of potential
libraries and compilers mismatches between distutils and numscons). See
http://projects.scipy.org/scipy/numpy/wiki/NumScons for more details.
The only tested platform for now are:
- linux + gcc; other compilers on linux should work as well.
- solaris + sunstudio with sunperf.
On both those platforms, only a few tests do not pass. I don't expect
windows or mac OS X to work yet, but I can not test those platforms ATM.
I am releasing the current state of numscons because I won't have much
time to work on numscons the next few weeks unfortunately.
PLEASE DO NOT USE IT FOR PRODUCTION USE ! There are still some serious
- I painfully discovered that at least g77 is extremely sensitive to
different orders of linker flags (can cause crashes). I don't have any
problem anymore on my workstation (Ubuntu 32 bits, atlas + gcc/g77), but
this needs more testing.
- there are some race conditions with f2py which I do not fully
understand yet, and which prevents parallel build to work (so do not use
the scons command --jobs option)
- optimization flags of proprietary compilers: they are a PITA. They
often break IEEE conformance in quite a hard way, and this causes
crashes or wrong results (for example, the -fast option of sun compilers
breaks the argsort function of numpy).
So again, this is really just a release for people to test things if
they want, but nothing else.
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