Staging
v0.5.1
v0.5.1
https://github.com/python/cpython
Tip revision: 74f4bd53e03ded8408bcc2de67cf0f5a4ac5b1a1 authored by Barry Warsaw on 23 February 2012, 15:59:38 UTC
Bump some more copyright years (as per PEP 101), since this is the first
Bump some more copyright years (as per PEP 101), since this is the first
Tip revision: 74f4bd5
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 not mods.has_key(mod):
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 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 vars.has_key(var):
str = str[:k] + vars[var] + str[i:]
i = k
return str