Staging
v0.8.1
v0.8.1
https://github.com/python/cpython
Tip revision: 1da43e5e916949c8e849e656d9d05fa4b9d6836c authored by Benjamin Peterson on 26 June 2009, 13:21:52 UTC
rearrange the sections of the README, so they'll hopefully be more in the order people will interested in
rearrange the sections of the README, so they'll hopefully be more in the order people will interested in
Tip revision: 1da43e5
checkextensions.py
# Check for a module in a set of extension directories.
# An extension directory should contain a Setup file
# and one or more .o files or a lib.a file.
import os
import parsesetup
def checkextensions(unknown, extensions):
files = []
modules = []
edict = {}
for e in extensions:
setup = os.path.join(e, 'Setup')
liba = os.path.join(e, 'lib.a')
if not os.path.isfile(liba):
liba = None
edict[e] = parsesetup.getsetupinfo(setup), liba
for mod in unknown:
for e in extensions:
(mods, vars), liba = edict[e]
if mod not in mods:
continue
modules.append(mod)
if liba:
# If we find a lib.a, use it, ignore the
# .o files, and use *all* libraries for
# *all* modules in the Setup file
if liba in files:
break
files.append(liba)
for m in list(mods.keys()):
files = files + select(e, mods, vars,
m, 1)
break
files = files + select(e, mods, vars, mod, 0)
break
return files, modules
def select(e, mods, vars, mod, skipofiles):
files = []
for w in mods[mod]:
w = treatword(w)
if not w:
continue
w = expandvars(w, vars)
for w in w.split():
if skipofiles and w[-2:] == '.o':
continue
# Assume $var expands to absolute pathname
if w[0] not in ('-', '$') and w[-2:] in ('.o', '.a'):
w = os.path.join(e, w)
if w[:2] in ('-L', '-R') and w[2:3] != '$':
w = w[:2] + os.path.join(e, w[2:])
files.append(w)
return files
cc_flags = ['-I', '-D', '-U']
cc_exts = ['.c', '.C', '.cc', '.c++']
def treatword(w):
if w[:2] in cc_flags:
return None
if w[:1] == '-':
return w # Assume loader flag
head, tail = os.path.split(w)
base, ext = os.path.splitext(tail)
if ext in cc_exts:
tail = base + '.o'
w = os.path.join(head, tail)
return w
def expandvars(str, vars):
i = 0
while i < len(str):
i = k = str.find('$', i)
if i < 0:
break
i = i+1
var = str[i:i+1]
i = i+1
if var == '(':
j = str.find(')', i)
if j < 0:
break
var = str[i:j]
i = j+1
if var in vars:
str = str[:k] + vars[var] + str[i:]
i = k
return str