263 lines
8.5 KiB
Python
263 lines
8.5 KiB
Python
"""SCons.Platform.posix
|
|
|
|
Platform-specific initialization for POSIX (Linux, UNIX, etc.) systems.
|
|
|
|
There normally shouldn't be any need to import this module directly. It
|
|
will usually be imported through the generic SCons.Platform.Platform()
|
|
selection method.
|
|
"""
|
|
|
|
#
|
|
# Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 The SCons Foundation
|
|
#
|
|
# Permission is hereby granted, free of charge, to any person obtaining
|
|
# a copy of this software and associated documentation files (the
|
|
# "Software"), to deal in the Software without restriction, including
|
|
# without limitation the rights to use, copy, modify, merge, publish,
|
|
# distribute, sublicense, and/or sell copies of the Software, and to
|
|
# permit persons to whom the Software is furnished to do so, subject to
|
|
# the following conditions:
|
|
#
|
|
# The above copyright notice and this permission notice shall be included
|
|
# in all copies or substantial portions of the Software.
|
|
#
|
|
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
|
|
# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
|
|
# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
|
|
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
|
|
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
|
|
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
|
|
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
|
|
#
|
|
|
|
__revision__ = "src/engine/SCons/Platform/posix.py 5357 2011/09/09 21:31:03 bdeegan"
|
|
|
|
import errno
|
|
import os
|
|
import os.path
|
|
import subprocess
|
|
import sys
|
|
import select
|
|
|
|
import SCons.Util
|
|
from SCons.Platform import TempFileMunge
|
|
|
|
exitvalmap = {
|
|
2 : 127,
|
|
13 : 126,
|
|
}
|
|
|
|
def escape(arg):
|
|
"escape shell special characters"
|
|
slash = '\\'
|
|
special = '"$()'
|
|
|
|
arg = arg.replace(slash, slash+slash)
|
|
for c in special:
|
|
arg = arg.replace(c, slash+c)
|
|
|
|
return '"' + arg + '"'
|
|
|
|
def exec_system(l, env):
|
|
stat = os.system(' '.join(l))
|
|
if stat & 0xff:
|
|
return stat | 0x80
|
|
return stat >> 8
|
|
|
|
def exec_spawnvpe(l, env):
|
|
stat = os.spawnvpe(os.P_WAIT, l[0], l, env)
|
|
# os.spawnvpe() returns the actual exit code, not the encoding
|
|
# returned by os.waitpid() or os.system().
|
|
return stat
|
|
|
|
def exec_fork(l, env):
|
|
pid = os.fork()
|
|
if not pid:
|
|
# Child process.
|
|
exitval = 127
|
|
try:
|
|
os.execvpe(l[0], l, env)
|
|
except OSError, e:
|
|
exitval = exitvalmap.get(e[0], e[0])
|
|
sys.stderr.write("scons: %s: %s\n" % (l[0], e[1]))
|
|
os._exit(exitval)
|
|
else:
|
|
# Parent process.
|
|
pid, stat = os.waitpid(pid, 0)
|
|
if stat & 0xff:
|
|
return stat | 0x80
|
|
return stat >> 8
|
|
|
|
def _get_env_command(sh, escape, cmd, args, env):
|
|
s = ' '.join(args)
|
|
if env:
|
|
l = ['env', '-'] + \
|
|
[escape(t[0])+'='+escape(t[1]) for t in env.items()] + \
|
|
[sh, '-c', escape(s)]
|
|
s = ' '.join(l)
|
|
return s
|
|
|
|
def env_spawn(sh, escape, cmd, args, env):
|
|
return exec_system([_get_env_command( sh, escape, cmd, args, env)], env)
|
|
|
|
def spawnvpe_spawn(sh, escape, cmd, args, env):
|
|
return exec_spawnvpe([sh, '-c', ' '.join(args)], env)
|
|
|
|
def fork_spawn(sh, escape, cmd, args, env):
|
|
return exec_fork([sh, '-c', ' '.join(args)], env)
|
|
|
|
def process_cmd_output(cmd_stdout, cmd_stderr, stdout, stderr):
|
|
stdout_eof = stderr_eof = 0
|
|
while not (stdout_eof and stderr_eof):
|
|
try:
|
|
(i,o,e) = select.select([cmd_stdout, cmd_stderr], [], [])
|
|
if cmd_stdout in i:
|
|
str = cmd_stdout.read()
|
|
if len(str) == 0:
|
|
stdout_eof = 1
|
|
elif stdout is not None:
|
|
stdout.write(str)
|
|
if cmd_stderr in i:
|
|
str = cmd_stderr.read()
|
|
if len(str) == 0:
|
|
#sys.__stderr__.write( "stderr_eof=1\n" )
|
|
stderr_eof = 1
|
|
else:
|
|
#sys.__stderr__.write( "str(stderr) = %s\n" % str )
|
|
stderr.write(str)
|
|
except select.error, (_errno, _strerror):
|
|
if _errno != errno.EINTR:
|
|
raise
|
|
|
|
def exec_popen3(l, env, stdout, stderr):
|
|
proc = subprocess.Popen(' '.join(l),
|
|
stdout=stdout,
|
|
stderr=stderr,
|
|
shell=True)
|
|
stat = proc.wait()
|
|
if stat & 0xff:
|
|
return stat | 0x80
|
|
return stat >> 8
|
|
|
|
def exec_piped_fork(l, env, stdout, stderr):
|
|
# spawn using fork / exec and providing a pipe for the command's
|
|
# stdout / stderr stream
|
|
if stdout != stderr:
|
|
(rFdOut, wFdOut) = os.pipe()
|
|
(rFdErr, wFdErr) = os.pipe()
|
|
else:
|
|
(rFdOut, wFdOut) = os.pipe()
|
|
rFdErr = rFdOut
|
|
wFdErr = wFdOut
|
|
# do the fork
|
|
pid = os.fork()
|
|
if not pid:
|
|
# Child process
|
|
os.close( rFdOut )
|
|
if rFdOut != rFdErr:
|
|
os.close( rFdErr )
|
|
os.dup2( wFdOut, 1 ) # is there some symbolic way to do that ?
|
|
os.dup2( wFdErr, 2 )
|
|
os.close( wFdOut )
|
|
if stdout != stderr:
|
|
os.close( wFdErr )
|
|
exitval = 127
|
|
try:
|
|
os.execvpe(l[0], l, env)
|
|
except OSError, e:
|
|
exitval = exitvalmap.get(e[0], e[0])
|
|
stderr.write("scons: %s: %s\n" % (l[0], e[1]))
|
|
os._exit(exitval)
|
|
else:
|
|
# Parent process
|
|
pid, stat = os.waitpid(pid, 0)
|
|
os.close( wFdOut )
|
|
if stdout != stderr:
|
|
os.close( wFdErr )
|
|
childOut = os.fdopen( rFdOut )
|
|
if stdout != stderr:
|
|
childErr = os.fdopen( rFdErr )
|
|
else:
|
|
childErr = childOut
|
|
process_cmd_output(childOut, childErr, stdout, stderr)
|
|
os.close( rFdOut )
|
|
if stdout != stderr:
|
|
os.close( rFdErr )
|
|
if stat & 0xff:
|
|
return stat | 0x80
|
|
return stat >> 8
|
|
|
|
def piped_env_spawn(sh, escape, cmd, args, env, stdout, stderr):
|
|
# spawn using Popen3 combined with the env command
|
|
# the command name and the command's stdout is written to stdout
|
|
# the command's stderr is written to stderr
|
|
return exec_popen3([_get_env_command(sh, escape, cmd, args, env)],
|
|
env, stdout, stderr)
|
|
|
|
def piped_fork_spawn(sh, escape, cmd, args, env, stdout, stderr):
|
|
# spawn using fork / exec and providing a pipe for the command's
|
|
# stdout / stderr stream
|
|
return exec_piped_fork([sh, '-c', ' '.join(args)],
|
|
env, stdout, stderr)
|
|
|
|
|
|
|
|
def generate(env):
|
|
# If os.spawnvpe() exists, we use it to spawn commands. Otherwise
|
|
# if the env utility exists, we use os.system() to spawn commands,
|
|
# finally we fall back on os.fork()/os.exec().
|
|
#
|
|
# os.spawnvpe() is prefered because it is the most efficient. But
|
|
# for Python versions without it, os.system() is prefered because it
|
|
# is claimed that it works better with threads (i.e. -j) and is more
|
|
# efficient than forking Python.
|
|
#
|
|
# NB: Other people on the scons-users mailing list have claimed that
|
|
# os.fork()/os.exec() works better than os.system(). There may just
|
|
# not be a default that works best for all users.
|
|
|
|
if 'spawnvpe' in os.__dict__:
|
|
spawn = spawnvpe_spawn
|
|
elif env.Detect('env'):
|
|
spawn = env_spawn
|
|
else:
|
|
spawn = fork_spawn
|
|
|
|
if env.Detect('env'):
|
|
pspawn = piped_env_spawn
|
|
else:
|
|
pspawn = piped_fork_spawn
|
|
|
|
if 'ENV' not in env:
|
|
env['ENV'] = {}
|
|
env['ENV']['PATH'] = '/usr/local/bin:/opt/bin:/bin:/usr/bin'
|
|
env['OBJPREFIX'] = ''
|
|
env['OBJSUFFIX'] = '.o'
|
|
env['SHOBJPREFIX'] = '$OBJPREFIX'
|
|
env['SHOBJSUFFIX'] = '$OBJSUFFIX'
|
|
env['PROGPREFIX'] = ''
|
|
env['PROGSUFFIX'] = ''
|
|
env['LIBPREFIX'] = 'lib'
|
|
env['LIBSUFFIX'] = '.a'
|
|
env['SHLIBPREFIX'] = '$LIBPREFIX'
|
|
env['SHLIBSUFFIX'] = '.so'
|
|
env['LIBPREFIXES'] = [ '$LIBPREFIX' ]
|
|
env['LIBSUFFIXES'] = [ '$LIBSUFFIX', '$SHLIBSUFFIX' ]
|
|
env['PSPAWN'] = pspawn
|
|
env['SPAWN'] = spawn
|
|
env['SHELL'] = 'sh'
|
|
env['ESCAPE'] = escape
|
|
env['TEMPFILE'] = TempFileMunge
|
|
env['TEMPFILEPREFIX'] = '@'
|
|
#Based on LINUX: ARG_MAX=ARG_MAX=131072 - 3000 for environment expansion
|
|
#Note: specific platforms might rise or lower this value
|
|
env['MAXLINELENGTH'] = 128072
|
|
|
|
# This platform supports RPATH specifications.
|
|
env['__RPATH'] = '$_RPATH'
|
|
|
|
# Local Variables:
|
|
# tab-width:4
|
|
# indent-tabs-mode:nil
|
|
# End:
|
|
# vim: set expandtab tabstop=4 shiftwidth=4:
|