[Python-Dev] distutils doesn't use some compiler options when building

2008-11-26 Thread Akira Kitada 
Hi,

I encountered a weird problem using distutils.
Generally, distutils try to use the same compiler options used for
building Python interpreter,
but it looks like some of them are omitted sometimes.

- CPPFLAGS are not retrieved from the config and only ones in env are used.
- OPT is retrieved from the config, but it's only used when env has CFLAGS.

See: http://svn.python.org/view/python/trunk/Lib/distutils/sysconfig.py

"""
def customize_compiler(compiler):
...
if compiler.compiler_type == "unix":
(cc, cxx, opt, cflags, ccshared, ldshared, so_ext) = \
get_config_vars('CC', 'CXX', 'OPT', 'CFLAGS',
'CCSHARED', 'LDSHARED', 'SO')

if 'CC' in os.environ:
cc = os.environ['CC']
if 'CXX' in os.environ:
cxx = os.environ['CXX']
if 'LDSHARED' in os.environ:
ldshared = os.environ['LDSHARED']
if 'CPP' in os.environ:
cpp = os.environ['CPP']
else:
cpp = cc + " -E"   # not always
if 'LDFLAGS' in os.environ:
ldshared = ldshared + ' ' + os.environ['LDFLAGS']
if 'CFLAGS' in os.environ:
cflags = opt + ' ' + os.environ['CFLAGS']
ldshared = ldshared + ' ' + os.environ['CFLAGS']
if 'CPPFLAGS' in os.environ:
cpp = cpp + ' ' + os.environ['CPPFLAGS']
cflags = cflags + ' ' + os.environ['CPPFLAGS']
ldshared = ldshared + ' ' + os.environ['CPPFLAGS']

cc_cmd = cc + ' ' + cflags
compiler.set_executables(
preprocessor=cpp,
compiler=cc_cmd,
compiler_so=cc_cmd + ' ' + ccshared,
compiler_cxx=cxx,
linker_so=ldshared,
linker_exe=cc)

compiler.shared_lib_extension = so_ext
"""

Are these logics are intentional or just a bug?
If this is intentional behavior, why is that being this way?

Thanks,
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[Python-Dev] Fwd: distutils doesn't use some compiler options when building

2008-11-26 Thread Akira Kitada 
I didn't know distutils has its own list.
Forwarding.


-- Forwarded message --
From: Akira Kitada 
Date: Thu, Nov 27, 2008 at 2:28 AM
Subject: distutils doesn't use some compiler options when building
To: python-dev@python.org


Hi,

I encountered a weird problem using distutils.
Generally, distutils try to use the same compiler options used for
building Python interpreter,
but it looks like some of them are omitted sometimes.

- CPPFLAGS are not retrieved from the config and only ones in env are used.
- OPT is retrieved from the config, but it's only used when env has CFLAGS.

See: http://svn.python.org/view/python/trunk/Lib/distutils/sysconfig.py

"""
def customize_compiler(compiler):
...
   if compiler.compiler_type == "unix":
   (cc, cxx, opt, cflags, ccshared, ldshared, so_ext) = \
   get_config_vars('CC', 'CXX', 'OPT', 'CFLAGS',
   'CCSHARED', 'LDSHARED', 'SO')

   if 'CC' in os.environ:
   cc = os.environ['CC']
   if 'CXX' in os.environ:
   cxx = os.environ['CXX']
   if 'LDSHARED' in os.environ:
   ldshared = os.environ['LDSHARED']
   if 'CPP' in os.environ:
   cpp = os.environ['CPP']
   else:
   cpp = cc + " -E"   # not always
   if 'LDFLAGS' in os.environ:
   ldshared = ldshared + ' ' + os.environ['LDFLAGS']
   if 'CFLAGS' in os.environ:
   cflags = opt + ' ' + os.environ['CFLAGS']
   ldshared = ldshared + ' ' + os.environ['CFLAGS']
   if 'CPPFLAGS' in os.environ:
   cpp = cpp + ' ' + os.environ['CPPFLAGS']
   cflags = cflags + ' ' + os.environ['CPPFLAGS']
   ldshared = ldshared + ' ' + os.environ['CPPFLAGS']

   cc_cmd = cc + ' ' + cflags
   compiler.set_executables(
   preprocessor=cpp,
   compiler=cc_cmd,
   compiler_so=cc_cmd + ' ' + ccshared,
   compiler_cxx=cxx,
   linker_so=ldshared,
   linker_exe=cc)

   compiler.shared_lib_extension = so_ext
"""

Are these logics are intentional or just a bug?
If this is intentional behavior, why is that being this way?

Thanks,
___
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Python-Dev@python.org
http://mail.python.org/mailman/listinfo/python-dev
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http://mail.python.org/mailman/options/python-dev/archive%40mail-archive.com