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Rene Liebscher: check if the extension file (.so or .pyd) is 

up-to-date with respect to the source files; that way, we
don't needlessly rebuild just because object files go away.
This commit is contained in:
Greg Ward 2000-05-26 01:31:53 +00:00
parent 59d382e482
commit 521340034e
1 changed files with 24 additions and 19 deletions
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43
Lib/distutils/command/build_ext.py
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@ -12,7 +12,7 @@ import sys, os, string, re
from types import *
from distutils.core import Command
from distutils.errors import *
from distutils.dep_util import newer_group
# An extension name is just a dot-separated list of Python NAMEs (ie.
# the same as a fully-qualified module name).
@ -285,7 +285,29 @@ class build_ext (Command):
"a list of source filenames") % extension_name
sources = list (sources)
self.announce ("building '%s' extension" % extension_name)
fullname = self.get_ext_fullname (extension_name)
if self.inplace:
# ignore build-lib -- put the compiled extension into
# the source tree along with pure Python modules
modpath = string.split (fullname, '.')
package = string.join (modpath[0:-1], '.')
base = modpath[-1]
build_py = self.find_peer ('build_py')
package_dir = build_py.get_package_dir (package)
ext_filename = os.path.join (package_dir,
self.get_ext_filename(base))
else:
ext_filename = os.path.join (self.build_lib,
self.get_ext_filename(fullname))
if not newer_group(sources, ext_filename, 'newer'):
self.announce ("skipping '%s' extension (up-to-date)" %
extension_name)
continue # 'for' loop over all extensions
else:
self.announce ("building '%s' extension" % extension_name)
# First step: compile the source code to object files. This
# drops the object files in the current directory, regardless
@ -357,23 +379,6 @@ class build_ext (Command):
self.mkpath (os.path.dirname (implib_file))
# if MSVC
fullname = self.get_ext_fullname (extension_name)
if self.inplace:
# ignore build-lib -- put the compiled extension into
# the source tree along with pure Python modules
modpath = string.split (fullname, '.')
package = string.join (modpath[0:-1], '.')
base = modpath[-1]
build_py = self.find_peer ('build_py')
package_dir = build_py.get_package_dir (package)
ext_filename = os.path.join (package_dir,
self.get_ext_filename(base))
else:
ext_filename = os.path.join (self.build_lib,
self.get_ext_filename(fullname))
self.compiler.link_shared_object (objects, ext_filename,
libraries=libraries,
library_dirs=library_dirs,