0.1.1
by Mark Brown
Import upstream version 0.95 |
1 |
"""SCons.Platform.posix
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2 |
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3 |
Platform-specific initialization for POSIX (Linux, UNIX, etc.) systems.
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4 |
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5 |
There normally shouldn't be any need to import this module directly. It
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6 |
will usually be imported through the generic SCons.Platform.Platform()
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7 |
selection method.
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8 |
"""
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9 |
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10 |
#
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0.2.4
by Mark Brown
Import upstream version 0.96.96 |
11 |
# Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007 The SCons Foundation
|
0.1.1
by Mark Brown
Import upstream version 0.95 |
12 |
#
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13 |
# Permission is hereby granted, free of charge, to any person obtaining
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14 |
# a copy of this software and associated documentation files (the
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15 |
# "Software"), to deal in the Software without restriction, including
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16 |
# without limitation the rights to use, copy, modify, merge, publish,
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17 |
# distribute, sublicense, and/or sell copies of the Software, and to
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18 |
# permit persons to whom the Software is furnished to do so, subject to
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19 |
# the following conditions:
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20 |
#
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21 |
# The above copyright notice and this permission notice shall be included
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22 |
# in all copies or substantial portions of the Software.
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23 |
#
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24 |
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
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25 |
# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
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26 |
# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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27 |
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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28 |
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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29 |
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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30 |
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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31 |
#
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32 |
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0.2.6
by Michael Bienia
Import upstream version 0.97.0d20071203 |
33 |
__revision__ = "src/engine/SCons/Platform/posix.py 2509 2007/12/03 20:20:38 broonie" |
0.1.1
by Mark Brown
Import upstream version 0.95 |
34 |
|
35 |
import os |
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36 |
import os.path |
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37 |
import popen2 |
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38 |
import string |
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39 |
import sys |
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40 |
import select |
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41 |
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42 |
import SCons.Util |
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0.2.2
by Daniel T Chen
Import upstream version 0.96.92 |
43 |
from SCons.Platform import TempFileMunge |
0.1.1
by Mark Brown
Import upstream version 0.95 |
44 |
|
45 |
exitvalmap = { |
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46 |
2 : 127, |
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47 |
13 : 126, |
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48 |
}
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49 |
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50 |
def escape(arg): |
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51 |
"escape shell special characters"
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52 |
slash = '\\' |
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53 |
special = '"$' |
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54 |
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55 |
arg = string.replace(arg, slash, slash+slash) |
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56 |
for c in special: |
|
57 |
arg = string.replace(arg, c, slash+c) |
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58 |
||
59 |
return '"' + arg + '"' |
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60 |
||
0.2.2
by Daniel T Chen
Import upstream version 0.96.92 |
61 |
def exec_system(l, env): |
62 |
stat = os.system(string.join(l)) |
|
63 |
if stat & 0xff: |
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64 |
return stat | 0x80 |
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65 |
return stat >> 8 |
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66 |
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67 |
def exec_spawnvpe(l, env): |
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68 |
stat = os.spawnvpe(os.P_WAIT, l[0], l, env) |
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69 |
# os.spawnvpe() returns the actual exit code, not the encoding
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70 |
# returned by os.waitpid() or os.system().
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71 |
return stat |
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72 |
||
0.2.3
by Mark Brown
Import upstream version 0.96.93 |
73 |
def exec_fork(l, env): |
0.2.2
by Daniel T Chen
Import upstream version 0.96.92 |
74 |
pid = os.fork() |
75 |
if not pid: |
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76 |
# Child process.
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77 |
exitval = 127 |
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78 |
try: |
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79 |
os.execvpe(l[0], l, env) |
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80 |
except OSError, e: |
|
0.2.3
by Mark Brown
Import upstream version 0.96.93 |
81 |
exitval = exitvalmap.get(e[0], e[0]) |
0.2.2
by Daniel T Chen
Import upstream version 0.96.92 |
82 |
sys.stderr.write("scons: %s: %s\n" % (l[0], e[1])) |
83 |
os._exit(exitval) |
|
84 |
else: |
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85 |
# Parent process.
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86 |
pid, stat = os.waitpid(pid, 0) |
|
87 |
if stat & 0xff: |
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88 |
return stat | 0x80 |
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89 |
return stat >> 8 |
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90 |
||
0.1.1
by Mark Brown
Import upstream version 0.95 |
91 |
def _get_env_command(sh, escape, cmd, args, env): |
0.2.2
by Daniel T Chen
Import upstream version 0.96.92 |
92 |
s = string.join(args) |
0.1.1
by Mark Brown
Import upstream version 0.95 |
93 |
if env: |
0.2.2
by Daniel T Chen
Import upstream version 0.96.92 |
94 |
l = ['env', '-'] + \ |
95 |
map(lambda t, e=escape: t[0]+'='+e(t[1]), env.items()) + \ |
|
96 |
[sh, '-c', escape(s)] |
|
97 |
s = string.join(l) |
|
0.1.1
by Mark Brown
Import upstream version 0.95 |
98 |
return s |
99 |
||
100 |
def env_spawn(sh, escape, cmd, args, env): |
|
0.2.2
by Daniel T Chen
Import upstream version 0.96.92 |
101 |
return exec_system([_get_env_command( sh, escape, cmd, args, env)], env) |
0.1.1
by Mark Brown
Import upstream version 0.95 |
102 |
|
0.2.2
by Daniel T Chen
Import upstream version 0.96.92 |
103 |
def spawnvpe_spawn(sh, escape, cmd, args, env): |
104 |
return exec_spawnvpe([sh, '-c', string.join(args)], env) |
|
0.1.1
by Mark Brown
Import upstream version 0.95 |
105 |
|
106 |
def fork_spawn(sh, escape, cmd, args, env): |
|
0.2.2
by Daniel T Chen
Import upstream version 0.96.92 |
107 |
return exec_fork([sh, '-c', string.join(args)], env) |
0.1.1
by Mark Brown
Import upstream version 0.95 |
108 |
|
109 |
def process_cmd_output(cmd_stdout, cmd_stderr, stdout, stderr): |
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110 |
stdout_eof = stderr_eof = 0 |
|
111 |
while not (stdout_eof and stderr_eof): |
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112 |
(i,o,e) = select.select([cmd_stdout, cmd_stderr], [], []) |
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113 |
if cmd_stdout in i: |
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114 |
str = cmd_stdout.read() |
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115 |
if len(str) == 0: |
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116 |
stdout_eof = 1 |
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117 |
elif stdout != None: |
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118 |
stdout.write(str) |
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119 |
if cmd_stderr in i: |
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120 |
str = cmd_stderr.read() |
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121 |
if len(str) == 0: |
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122 |
#sys.__stderr__.write( "stderr_eof=1\n" )
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123 |
stderr_eof = 1 |
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124 |
else: |
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125 |
#sys.__stderr__.write( "str(stderr) = %s\n" % str )
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126 |
stderr.write(str) |
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127 |
||
0.2.2
by Daniel T Chen
Import upstream version 0.96.92 |
128 |
def exec_popen3(l, env, stdout, stderr): |
129 |
proc = popen2.Popen3(string.join(l), 1) |
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0.1.1
by Mark Brown
Import upstream version 0.95 |
130 |
process_cmd_output(proc.fromchild, proc.childerr, stdout, stderr) |
131 |
stat = proc.wait() |
|
132 |
if stat & 0xff: |
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133 |
return stat | 0x80 |
|
134 |
return stat >> 8 |
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135 |
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0.2.2
by Daniel T Chen
Import upstream version 0.96.92 |
136 |
def exec_piped_fork(l, env, stdout, stderr): |
0.1.1
by Mark Brown
Import upstream version 0.95 |
137 |
# spawn using fork / exec and providing a pipe for the command's
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138 |
# stdout / stderr stream
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139 |
if stdout != stderr: |
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140 |
(rFdOut, wFdOut) = os.pipe() |
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141 |
(rFdErr, wFdErr) = os.pipe() |
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142 |
else: |
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143 |
(rFdOut, wFdOut) = os.pipe() |
|
144 |
rFdErr = rFdOut |
|
145 |
wFdErr = wFdOut |
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146 |
# do the fork
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147 |
pid = os.fork() |
|
148 |
if not pid: |
|
149 |
# Child process
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150 |
os.close( rFdOut ) |
|
151 |
if rFdOut != rFdErr: |
|
152 |
os.close( rFdErr ) |
|
153 |
os.dup2( wFdOut, 1 ) # is there some symbolic way to do that ? |
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154 |
os.dup2( wFdErr, 2 ) |
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155 |
os.close( wFdOut ) |
|
156 |
if stdout != stderr: |
|
157 |
os.close( wFdErr ) |
|
158 |
exitval = 127 |
|
159 |
try: |
|
0.2.2
by Daniel T Chen
Import upstream version 0.96.92 |
160 |
os.execvpe(l[0], l, env) |
0.1.1
by Mark Brown
Import upstream version 0.95 |
161 |
except OSError, e: |
0.2.3
by Mark Brown
Import upstream version 0.96.93 |
162 |
exitval = exitvalmap.get(e[0], e[0]) |
0.2.2
by Daniel T Chen
Import upstream version 0.96.92 |
163 |
stderr.write("scons: %s: %s\n" % (l[0], e[1])) |
0.1.1
by Mark Brown
Import upstream version 0.95 |
164 |
os._exit(exitval) |
165 |
else: |
|
166 |
# Parent process
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167 |
pid, stat = os.waitpid(pid, 0) |
|
168 |
os.close( wFdOut ) |
|
169 |
if stdout != stderr: |
|
170 |
os.close( wFdErr ) |
|
171 |
childOut = os.fdopen( rFdOut ) |
|
172 |
if stdout != stderr: |
|
173 |
childErr = os.fdopen( rFdErr ) |
|
174 |
else: |
|
175 |
childErr = childOut |
|
176 |
process_cmd_output(childOut, childErr, stdout, stderr) |
|
177 |
os.close( rFdOut ) |
|
178 |
if stdout != stderr: |
|
179 |
os.close( rFdErr ) |
|
180 |
if stat & 0xff: |
|
181 |
return stat | 0x80 |
|
182 |
return stat >> 8 |
|
183 |
||
0.2.2
by Daniel T Chen
Import upstream version 0.96.92 |
184 |
def piped_env_spawn(sh, escape, cmd, args, env, stdout, stderr): |
185 |
# spawn using Popen3 combined with the env command
|
|
186 |
# the command name and the command's stdout is written to stdout
|
|
187 |
# the command's stderr is written to stderr
|
|
188 |
return exec_popen3([_get_env_command(sh, escape, cmd, args, env)], |
|
189 |
env, stdout, stderr) |
|
190 |
||
191 |
def piped_fork_spawn(sh, escape, cmd, args, env, stdout, stderr): |
|
192 |
# spawn using fork / exec and providing a pipe for the command's
|
|
193 |
# stdout / stderr stream
|
|
194 |
return exec_piped_fork([sh, '-c', string.join(args)], |
|
195 |
env, stdout, stderr) |
|
196 |
||
0.1.1
by Mark Brown
Import upstream version 0.95 |
197 |
|
198 |
||
199 |
def generate(env): |
|
200 |
# If os.spawnvpe() exists, we use it to spawn commands. Otherwise
|
|
201 |
# if the env utility exists, we use os.system() to spawn commands,
|
|
202 |
# finally we fall back on os.fork()/os.exec().
|
|
203 |
#
|
|
204 |
# os.spawnvpe() is prefered because it is the most efficient. But
|
|
205 |
# for Python versions without it, os.system() is prefered because it
|
|
206 |
# is claimed that it works better with threads (i.e. -j) and is more
|
|
207 |
# efficient than forking Python.
|
|
208 |
#
|
|
209 |
# NB: Other people on the scons-users mailing list have claimed that
|
|
210 |
# os.fork()/os.exec() works better than os.system(). There may just
|
|
211 |
# not be a default that works best for all users.
|
|
212 |
||
213 |
if os.__dict__.has_key('spawnvpe'): |
|
0.2.2
by Daniel T Chen
Import upstream version 0.96.92 |
214 |
spawn = spawnvpe_spawn |
0.1.1
by Mark Brown
Import upstream version 0.95 |
215 |
else: |
216 |
spawn = fork_spawn |
|
217 |
||
6
by Michael Bienia, Mark Brown, Michael Bienia
[ Mark Brown ] |
218 |
pspawn = piped_fork_spawn |
0.1.1
by Mark Brown
Import upstream version 0.95 |
219 |
|
220 |
if not env.has_key('ENV'): |
|
221 |
env['ENV'] = {} |
|
0.2.2
by Daniel T Chen
Import upstream version 0.96.92 |
222 |
env['ENV']['PATH'] = '/usr/local/bin:/opt/bin:/bin:/usr/bin' |
0.1.1
by Mark Brown
Import upstream version 0.95 |
223 |
env['OBJPREFIX'] = '' |
224 |
env['OBJSUFFIX'] = '.o' |
|
225 |
env['SHOBJPREFIX'] = '$OBJPREFIX' |
|
226 |
env['SHOBJSUFFIX'] = '$OBJSUFFIX' |
|
227 |
env['PROGPREFIX'] = '' |
|
228 |
env['PROGSUFFIX'] = '' |
|
229 |
env['LIBPREFIX'] = 'lib' |
|
230 |
env['LIBSUFFIX'] = '.a' |
|
231 |
env['SHLIBPREFIX'] = '$LIBPREFIX' |
|
232 |
env['SHLIBSUFFIX'] = '.so' |
|
233 |
env['LIBPREFIXES'] = '$LIBPREFIX' |
|
234 |
env['LIBSUFFIXES'] = [ '$LIBSUFFIX', '$SHLIBSUFFIX' ] |
|
235 |
env['PSPAWN'] = pspawn |
|
236 |
env['SPAWN'] = spawn |
|
237 |
env['SHELL'] = 'sh' |
|
238 |
env['ESCAPE'] = escape |
|
0.2.2
by Daniel T Chen
Import upstream version 0.96.92 |
239 |
env['TEMPFILE'] = TempFileMunge |
240 |
env['TEMPFILEPREFIX'] = '@' |
|
241 |
#Based on LINUX: ARG_MAX=ARG_MAX=131072 - 3000 for environment expansion
|
|
242 |
#Note: specific platforms might rise or lower this value
|
|
243 |
env['MAXLINELENGTH'] = 128072 |
|
0.2.1
by Mark Brown
Import upstream version 0.96.1 |
244 |
|
245 |
# This platform supports RPATH specifications.
|
|
246 |
env['__RPATH'] = '$_RPATH' |