A Friday 06 February 2009, Francesc Alted escrigué:
> Hi,
>
> We would like to use the numpy.distutils machinery for numexpr and
> I'd like to add different compiler flags depending on the compiler
> used. Anbody knows a simple way to do this with numpy.distutils (ore
> plain distutils)?
I've figured out how to do it. For the records, you simply have to
import this:
from numpy.distutils.command.build_ext import build_ext as
numpy_build_ext
and then define the next class:
class build_ext(numpy_build_ext):
def build_extension(self, ext):
# at this point we know what the C compiler is.
c = self.compiler
old_compile_options = None
# For MS Visual C, we use /O1 instead of the default /Ox,
# as /Ox takes a long time (~5 mins) to compile.
# The speed of the code isn't noticeably different.
if c.compiler_type == 'msvc':
if not c.initialized:
c.initialize()
old_compile_options = c.compile_options[:]
if '/Ox' in c.compile_options:
c.compile_options.remove('/Ox')
c.compile_options.append('/O1')
ext.extra_compile_args = []
numpy_build_ext.build_extension(self, ext)
if old_compile_options is not None:
self.compiler.compile_options = old_compile_options
where you can taylor compiler options at your will.
Cheers,
--
Francesc Alted
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