3 # Copyright (c) 2012 Google Inc. All rights reserved.
4 # Use of this source code is governed by a BSD-style license that can be
5 # found in the LICENSE file.
7 """Utility functions for Windows builds.
9 These functions are executed via gyp-win-tool when using the ninja generator.
19 BASE_DIR = os.path.dirname(os.path.abspath(__file__))
21 # A regex matching an argument corresponding to a PDB filename passed as an
22 # argument to link.exe.
23 _LINK_EXE_PDB_ARG = re.compile('/PDB:(?P<pdb>.+\.exe\.pdb)$', re.IGNORECASE)
27 exit_code = executor.Dispatch(args)
28 if exit_code is not None:
32 class WinTool(object):
33 """This class performs all the Windows tooling steps. The methods can either
34 be executed directly, or dispatched from an argument list."""
36 def _MaybeUseSeparateMspdbsrv(self, env, args):
37 """Allows to use a unique instance of mspdbsrv.exe for the linkers linking
38 an .exe target if GYP_USE_SEPARATE_MSPDBSRV has been set."""
39 if not os.environ.get('GYP_USE_SEPARATE_MSPDBSRV'):
43 raise Exception("Not enough arguments")
45 if args[0] != 'link.exe':
48 # Checks if this linker produces a PDB for an .exe target. If so use the
49 # name of this PDB to generate an endpoint name for mspdbsrv.exe.
52 m = _LINK_EXE_PDB_ARG.match(arg)
54 endpoint_name = '%s_%d' % (m.group('pdb'), os.getpid())
57 if endpoint_name is None:
60 # Adds the appropriate environment variable. This will be read by link.exe
61 # to know which instance of mspdbsrv.exe it should connect to (if it's
62 # not set then the default endpoint is used).
63 env['_MSPDBSRV_ENDPOINT_'] = endpoint_name
65 def Dispatch(self, args):
66 """Dispatches a string command to a method."""
68 raise Exception("Not enough arguments")
70 method = "Exec%s" % self._CommandifyName(args[0])
71 return getattr(self, method)(*args[1:])
73 def _CommandifyName(self, name_string):
74 """Transforms a tool name like recursive-mirror to RecursiveMirror."""
75 return name_string.title().replace('-', '')
77 def _GetEnv(self, arch):
78 """Gets the saved environment from a file for a given architecture."""
79 # The environment is saved as an "environment block" (see CreateProcess
80 # and msvs_emulation for details). We convert to a dict here.
81 # Drop last 2 NULs, one for list terminator, one for trailing vs. separator.
82 pairs = open(arch).read()[:-2].split('\0')
83 kvs = [item.split('=', 1) for item in pairs]
86 def ExecStamp(self, path):
87 """Simple stamp command."""
88 open(path, 'w').close()
90 def ExecRecursiveMirror(self, source, dest):
91 """Emulation of rm -rf out && cp -af in out."""
92 if os.path.exists(dest):
93 if os.path.isdir(dest):
97 if os.path.isdir(source):
98 shutil.copytree(source, dest)
100 shutil.copy2(source, dest)
102 def ExecLinkWrapper(self, arch, *args):
103 """Filter diagnostic output from link that looks like:
104 ' Creating library ui.dll.lib and object ui.dll.exp'
105 This happens when there are exports from the dll or exe.
107 env = self._GetEnv(arch)
108 self._MaybeUseSeparateMspdbsrv(env, args)
109 link = subprocess.Popen(args,
112 stdout=subprocess.PIPE,
113 stderr=subprocess.STDOUT)
114 out, _ = link.communicate()
115 for line in out.splitlines():
116 if not line.startswith(' Creating library '):
118 return link.returncode
120 def ExecLinkWithManifests(self, arch, embed_manifest, out, ldcmd, resname,
121 mt, rc, intermediate_manifest, *manifests):
122 """A wrapper for handling creating a manifest resource and then executing
124 # The 'normal' way to do manifests is to have link generate a manifest
125 # based on gathering dependencies from the object files, then merge that
126 # manifest with other manifests supplied as sources, convert the merged
127 # manifest to a resource, and then *relink*, including the compiled
128 # version of the manifest resource. This breaks incremental linking, and
129 # is generally overly complicated. Instead, we merge all the manifests
130 # provided (along with one that includes what would normally be in the
131 # linker-generated one, see msvs_emulation.py), and include that into the
132 # first and only link. We still tell link to generate a manifest, but we
133 # only use that to assert that our simpler process did not miss anything.
135 'python': sys.executable,
142 'intermediate_manifest': intermediate_manifest,
143 'manifests': ' '.join(manifests),
147 subprocess.check_call(
148 '%(python)s gyp-win-tool manifest-wrapper %(arch)s %(mt)s -nologo '
149 '-manifest %(manifests)s -out:%(out)s.manifest' % variables)
150 if embed_manifest == 'True':
151 subprocess.check_call(
152 '%(python)s gyp-win-tool manifest-to-rc %(arch)s %(out)s.manifest'
153 ' %(out)s.manifest.rc %(resname)s' % variables)
154 subprocess.check_call(
155 '%(python)s gyp-win-tool rc-wrapper %(arch)s %(rc)s '
156 '%(out)s.manifest.rc' % variables)
157 add_to_ld = ' %(out)s.manifest.res' % variables
158 subprocess.check_call(ldcmd + add_to_ld)
160 # Run mt.exe on the theoretically complete manifest we generated, merging
161 # it with the one the linker generated to confirm that the linker
162 # generated one does not add anything. This is strictly unnecessary for
163 # correctness, it's only to verify that e.g. /MANIFESTDEPENDENCY was not
164 # used in a #pragma comment.
166 # Merge the intermediate one with ours to .assert.manifest, then check
167 # that .assert.manifest is identical to ours.
168 subprocess.check_call(
169 '%(python)s gyp-win-tool manifest-wrapper %(arch)s %(mt)s -nologo '
170 '-manifest %(out)s.manifest %(intermediate_manifest)s '
171 '-out:%(out)s.assert.manifest' % variables)
172 assert_manifest = '%(out)s.assert.manifest' % variables
173 our_manifest = '%(out)s.manifest' % variables
174 # Load and normalize the manifests. mt.exe sometimes removes whitespace,
175 # and sometimes doesn't unfortunately.
176 with open(our_manifest, 'rb') as our_f:
177 with open(assert_manifest, 'rb') as assert_f:
178 our_data = our_f.read().translate(None, string.whitespace)
179 assert_data = assert_f.read().translate(None, string.whitespace)
180 if our_data != assert_data:
183 sys.stderr.write('%s\n-----\n' % filename)
184 with open(filename, 'rb') as f:
185 sys.stderr.write(f.read() + '\n-----\n')
186 dump(intermediate_manifest)
188 dump(assert_manifest)
190 'Linker generated manifest "%s" added to final manifest "%s" '
192 'Were /MANIFEST switches used in #pragma statements? ' % (
193 intermediate_manifest, our_manifest, assert_manifest))
196 def ExecManifestWrapper(self, arch, *args):
197 """Run manifest tool with environment set. Strip out undesirable warning
198 (some XML blocks are recognized by the OS loader, but not the manifest
200 env = self._GetEnv(arch)
201 popen = subprocess.Popen(args, shell=True, env=env,
202 stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
203 out, _ = popen.communicate()
204 for line in out.splitlines():
205 if line and 'manifest authoring warning 81010002' not in line:
207 return popen.returncode
209 def ExecManifestToRc(self, arch, *args):
210 """Creates a resource file pointing a SxS assembly manifest.
211 |args| is tuple containing path to resource file, path to manifest file
212 and resource name which can be "1" (for executables) or "2" (for DLLs)."""
213 manifest_path, resource_path, resource_name = args
214 with open(resource_path, 'wb') as output:
215 output.write('#include <windows.h>\n%s RT_MANIFEST "%s"' % (
217 os.path.abspath(manifest_path).replace('\\', '/')))
219 def ExecMidlWrapper(self, arch, outdir, tlb, h, dlldata, iid, proxy, idl,
221 """Filter noisy filenames output from MIDL compile step that isn't
222 quietable via command line flags.
224 args = ['midl', '/nologo'] + list(flags) + [
232 env = self._GetEnv(arch)
233 popen = subprocess.Popen(args, shell=True, env=env,
234 stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
235 out, _ = popen.communicate()
236 # Filter junk out of stdout, and write filtered versions. Output we want
237 # to filter is pairs of lines that look like this:
238 # Processing C:\Program Files (x86)\Microsoft SDKs\...\include\objidl.idl
240 lines = out.splitlines()
241 prefix = 'Processing '
242 processing = set(os.path.basename(x) for x in lines if x.startswith(prefix))
244 if not line.startswith(prefix) and line not in processing:
246 return popen.returncode
248 def ExecAsmWrapper(self, arch, *args):
249 """Filter logo banner from invocations of asm.exe."""
250 env = self._GetEnv(arch)
251 # MSVS doesn't assemble x64 asm files.
252 if arch == 'environment.x64':
254 popen = subprocess.Popen(args, shell=True, env=env,
255 stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
256 out, _ = popen.communicate()
257 for line in out.splitlines():
258 if (not line.startswith('Copyright (C) Microsoft Corporation') and
259 not line.startswith('Microsoft (R) Macro Assembler') and
260 not line.startswith(' Assembling: ') and
263 return popen.returncode
265 def ExecRcWrapper(self, arch, *args):
266 """Filter logo banner from invocations of rc.exe. Older versions of RC
267 don't support the /nologo flag."""
268 env = self._GetEnv(arch)
269 popen = subprocess.Popen(args, shell=True, env=env,
270 stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
271 out, _ = popen.communicate()
272 for line in out.splitlines():
273 if (not line.startswith('Microsoft (R) Windows (R) Resource Compiler') and
274 not line.startswith('Copyright (C) Microsoft Corporation') and
277 return popen.returncode
279 def ExecActionWrapper(self, arch, rspfile, *dir):
280 """Runs an action command line from a response file using the environment
281 for |arch|. If |dir| is supplied, use that as the working directory."""
282 env = self._GetEnv(arch)
283 args = open(rspfile).read()
284 dir = dir[0] if dir else None
285 return subprocess.call(args, shell=True, env=env, cwd=dir)
287 if __name__ == '__main__':
288 sys.exit(main(sys.argv[1:]))