gecko/build/cl.py

71 lines
2.5 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 os, os.path
import subprocess
import sys
CL_INCLUDES_PREFIX = os.environ.get("CL_INCLUDES_PREFIX", "Note: including file:")
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)
deps = set([os.path.normcase(source).replace(os.sep, '/')])
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:
deps.add(os.path.normcase(dep).replace(os.sep, '/'))
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:
f.write("%s: %s" % (target, source))
for dep in sorted(deps):
f.write(" \\\n%s" % dep)
f.write('\n')
for dep in sorted(deps):
f.write("%s:\n" % dep)
if __name__ == "__main__":
InvokeClWithDependencyGeneration(sys.argv[1:])