mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-12-12 00:50:40 +00:00
103 lines
3.7 KiB
Python
103 lines
3.7 KiB
Python
# This Source Code Form is subject to the terms of the Mozilla Public
|
|
# License, v. 2.0. If a copy of the MPL was not distributed with this
|
|
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
|
|
|
|
import ctypes
|
|
import os, os.path
|
|
import subprocess
|
|
import sys
|
|
from mozbuild.makeutil import Makefile
|
|
|
|
CL_INCLUDES_PREFIX = os.environ.get("CL_INCLUDES_PREFIX", "Note: including file:")
|
|
|
|
GetShortPathName = ctypes.windll.kernel32.GetShortPathNameW
|
|
GetLongPathName = ctypes.windll.kernel32.GetLongPathNameW
|
|
|
|
|
|
# cl.exe likes to print inconsistent paths in the showIncludes output
|
|
# (some lowercased, some not, with different directions of slashes),
|
|
# and we need the original file case for make/pymake to be happy.
|
|
# As this is slow and needs to be called a lot of times, use a cache
|
|
# to speed things up.
|
|
_normcase_cache = {}
|
|
|
|
def normcase(path):
|
|
# Get*PathName want paths with backslashes
|
|
path = path.replace('/', os.sep)
|
|
dir = os.path.dirname(path)
|
|
# name is fortunately always going to have the right case,
|
|
# so we can use a cache for the directory part only.
|
|
name = os.path.basename(path)
|
|
if dir in _normcase_cache:
|
|
result = _normcase_cache[dir]
|
|
else:
|
|
path = ctypes.create_unicode_buffer(dir)
|
|
length = GetShortPathName(path, None, 0)
|
|
shortpath = ctypes.create_unicode_buffer(length)
|
|
GetShortPathName(path, shortpath, length)
|
|
length = GetLongPathName(shortpath, None, 0)
|
|
if length > len(path):
|
|
path = ctypes.create_unicode_buffer(length)
|
|
GetLongPathName(shortpath, path, length)
|
|
result = _normcase_cache[dir] = path.value
|
|
return os.path.join(result, name)
|
|
|
|
|
|
def InvokeClWithDependencyGeneration(cmdline):
|
|
target = ""
|
|
# Figure out what the target is
|
|
for arg in cmdline:
|
|
if arg.startswith("-Fo"):
|
|
target = arg[3:]
|
|
break
|
|
|
|
if target == None:
|
|
print >>sys.stderr, "No target set" and sys.exit(1)
|
|
|
|
# Assume the source file is the last argument
|
|
source = cmdline[-1]
|
|
assert not source.startswith('-')
|
|
|
|
# The deps target lives here
|
|
depstarget = os.path.basename(target) + ".pp"
|
|
|
|
cmdline += ['-showIncludes']
|
|
cl = subprocess.Popen(cmdline, stdout=subprocess.PIPE)
|
|
|
|
mk = Makefile()
|
|
rule = mk.create_rule([target])
|
|
rule.add_dependencies([normcase(source)])
|
|
for line in cl.stdout:
|
|
# cl -showIncludes prefixes every header with "Note: including file:"
|
|
# and an indentation corresponding to the depth (which we don't need)
|
|
if line.startswith(CL_INCLUDES_PREFIX):
|
|
dep = line[len(CL_INCLUDES_PREFIX):].strip()
|
|
# We can't handle pathes with spaces properly in mddepend.pl, but
|
|
# we can assume that anything in a path with spaces is a system
|
|
# header and throw it away.
|
|
if ' ' not in dep:
|
|
rule.add_dependencies([normcase(dep)])
|
|
else:
|
|
sys.stdout.write(line) # Make sure we preserve the relevant output
|
|
# from cl
|
|
|
|
ret = cl.wait()
|
|
if ret != 0 or target == "":
|
|
sys.exit(ret)
|
|
|
|
depsdir = os.path.normpath(os.path.join(os.curdir, ".deps"))
|
|
depstarget = os.path.join(depsdir, depstarget)
|
|
if not os.path.isdir(depsdir):
|
|
try:
|
|
os.makedirs(depsdir)
|
|
except OSError:
|
|
pass # This suppresses the error we get when the dir exists, at the
|
|
# cost of masking failure to create the directory. We'll just
|
|
# die on the next line though, so it's not that much of a loss.
|
|
|
|
with open(depstarget, "w") as f:
|
|
mk.dump(f)
|
|
|
|
if __name__ == "__main__":
|
|
InvokeClWithDependencyGeneration(sys.argv[1:])
|