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
|
# Copyright 2016 MongoDB Inc.
#
# 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.
import SCons
import re
import subprocess
def exists(env):
if not 'AR' in env:
return False
ar = env.subst(env['AR'])
if not ar:
return False
# If the user has done anything confusing with ARFLAGS, bail out. We want to find
# an item in ARFLAGS of the exact form 'rc'.
if not "rc" in env['ARFLAGS']:
return False
pipe = SCons.Action._subproc(env,
SCons.Util.CLVar(ar) + ['--version'], stdin='devnull',
stderr='devnull', stdout=subprocess.PIPE)
if pipe.wait() != 0:
return False
found = False
for line in pipe.stdout:
if found:
continue # consume all data
found = re.search(r'^GNU ar|^LLVM', line.decode('utf-8'))
return bool(found)
def _add_emitter(builder):
base_emitter = builder.emitter
def new_emitter(target, source, env):
for t in target:
setattr(t.attributes, "thin_archive", True)
return (target, source)
new_emitter = SCons.Builder.ListEmitter([base_emitter, new_emitter])
builder.emitter = new_emitter
def _add_scanner(builder):
old_scanner = builder.target_scanner
path_function = old_scanner.path_function
def new_scanner(node, env, path):
old_results = old_scanner(node, env, path)
new_results = []
for base in old_results:
new_results.append(base)
if getattr(env.Entry(base).attributes, "thin_archive", None):
new_results.extend(base.children())
return new_results
builder.target_scanner = SCons.Scanner.Scanner(function=new_scanner,
path_function=path_function)
def generate(env):
if not exists(env):
return
env['ARFLAGS'] = SCons.Util.CLVar(
[arflag if arflag != "rc" else "rcsTD" for arflag in env['ARFLAGS']])
def noop_action(env, target, source):
pass
# Disable running ranlib, since we added 's' above
env['RANLIBCOM'] = noop_action
env['RANLIBCOMSTR'] = 'Skipping ranlib for thin archive $TARGET'
for builder in ['StaticLibrary', 'SharedArchive']:
_add_emitter(env['BUILDERS'][builder])
for builder in ['SharedLibrary', 'LoadableModule', 'Program']:
_add_scanner(env['BUILDERS'][builder])
|
