1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
|
# pylint: disable=g-bad-file-header
# Copyright 2016 The Bazel Authors. All rights reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Wrapper script for executing the Microsoft Linker."""
import os
import re
import sys
import msvc_tools
SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__))
sys.path.append(SCRIPT_DIR)
LINKPATTERNS = [
('-m(32|64)', ['$TARGET_ARCH']),
('-Xcompilation-mode=(dbg|fastbuild|opt)', ['$COMPILATION_MODE']),
(('rcs.*', '(.+)'), ['/OUT:"$PATH0"']),
(('-o', '(.+)'), ['/OUT:"$PATH0"']),
('-B(.+)', []),
('-lpthread', []),
('-L(.+)', ['/LIBPATH:$PATH0']),
('-static', []),
('-shared', ['/DLL']),
('-no-whole-archive', []),
('-rdynamic', []),
(r'-Wl,(.+)\.lib', ['$0.lib']),
('-Wl,@(.+)', ['$LOAD_PARAMS0']),
('@(.+)', ['$LOAD_PARAMS0']),
('-Wl,-rpath(.+)', []),
('-Wl,-S', []), # Debug symbols are in pdb files.
('-Wl,/SUBSYSTEM:(WINDOWS|CONSOLE)', ['/SUBSYSTEM:$0']),
(r'/WHOLEARCHIVE:(.+)\.lib', ['$0.lib']),
]
class MsvcLinker(msvc_tools.WindowsRunner):
"""Driver for the Microsoft linker."""
def Run(self, argv):
"""Runs the linker using the passed clang/gcc style argument list.
Args:
argv: List of arguments
Returns:
The return code of the link.
Raises:
ValueError: if target architecture or compile mode isn't specified
"""
# For now assume we are building a library.
tool = 'lib'
default_args = ['/nologo']
# Build argument list.
parser = msvc_tools.ArgParser(self, argv, LINKPATTERNS)
# Preprocessing arguments for linking whole archive libraries
parser.WholeArchivePreprocess()
# Find the output file name.
name = ''
for arg in parser.options:
if '/OUT:' in arg:
name = re.sub(r'^"|"$', '', arg[5:])
if not name:
raise msvc_tools.Error('No output file name specified!')
# Check if the library is empty, which is what happens when we create header
# or intermediate link-only libraries.
if (len(parser.options) == 2 and parser.options[0].startswith('/OUT') and
parser.options[1].startswith('/M')):
# Just "touch" the library to create the file.
with open(name, 'w'):
os.utime(name, None)
else:
# If the output name ends in .lo, or .a, it is a library, otherwise
# we need to use link to create an executable.
if os.path.splitext(name)[1] not in ['.a', '.lo']:
tool = 'link'
if not parser.target_arch:
raise ValueError('Must specify target architecture (-m32 or -m64)')
# Append explicit machine type.
if parser.target_arch == 'x64':
default_args.append('/MACHINE:X64')
else:
default_args.append('/MACHINE:X86')
# Args for buildng a console application. These must appear here since
# blaze will not properly pass them to the linker.
# /SUBSYSTEM:CONSOLE: Build a console application.
default_args += ['/SUBSYSTEM:CONSOLE']
# If there is no .o on the command line, then we need to add the
# run-time library for the target. Without this the linker gives a
# LNK4001 error and cannot find an entry point.
for arg in parser.options:
if arg.endswith('.o'):
break
else:
if not parser.compilation_mode:
raise ValueError('Must specify compilation mode '
'(-Xcompilation-mode={dbg,fastbuild,opt})')
if parser.compilation_mode == 'dbg':
default_args.insert(0, 'libcmtd.lib')
else:
default_args.insert(0, 'libcmt.lib')
return self.RunBinary(tool, default_args + parser.options,
parser.target_arch, parser)
def main(argv):
return MsvcLinker().Run(argv[1:])
if __name__ == '__main__':
sys.exit(main(sys.argv[1:])) # need to skip the first argument
|
