vmware/xorg: Do buffer round-robin logic differently
[mesa.git] / scons / mslib_sa.py
1 """mslib_sa
2
3 Tool-specific initialization for lib (MicroSoft library archiver).
4
5 Based on SCons.Tool.mslib, without the MSVC detection.
6
7 """
8
9 #
10 # Copyright (c) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 The SCons Foundation
11 #
12 # Permission is hereby granted, free of charge, to any person obtaining
13 # a copy of this software and associated documentation files (the
14 # "Software"), to deal in the Software without restriction, including
15 # without limitation the rights to use, copy, modify, merge, publish,
16 # distribute, sublicense, and/or sell copies of the Software, and to
17 # permit persons to whom the Software is furnished to do so, subject to
18 # the following conditions:
19 #
20 # The above copyright notice and this permission notice shall be included
21 # in all copies or substantial portions of the Software.
22 #
23 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
24 # KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
25 # WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26 # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
27 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
28 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
29 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
30 #
31
32 import os
33 import tempfile
34 import string
35
36 import SCons.Defaults
37 import SCons.Tool
38 import SCons.Util
39 import SCons.Errors
40
41 class TempFileMunge:
42 """Same as SCons.Platform.TempFileMunge, but preserves LINK /LIB
43 together."""
44
45 def __init__(self, cmd):
46 self.cmd = cmd
47
48 def __call__(self, target, source, env, for_signature):
49 if for_signature:
50 return self.cmd
51 cmd = env.subst_list(self.cmd, 0, target, source)[0]
52 try:
53 maxline = int(env.subst('$MAXLINELENGTH'))
54 except ValueError:
55 maxline = 2048
56
57 if (reduce(lambda x, y: x + len(y), cmd, 0) + len(cmd)) <= maxline:
58 return self.cmd
59
60 # We do a normpath because mktemp() has what appears to be
61 # a bug in Windows that will use a forward slash as a path
62 # delimiter. Windows's link mistakes that for a command line
63 # switch and barfs.
64 #
65 # We use the .lnk suffix for the benefit of the Phar Lap
66 # linkloc linker, which likes to append an .lnk suffix if
67 # none is given.
68 tmp = os.path.normpath(tempfile.mktemp('.lnk'))
69 native_tmp = SCons.Util.get_native_path(tmp)
70
71 if env['SHELL'] and env['SHELL'] == 'sh':
72 # The sh shell will try to escape the backslashes in the
73 # path, so unescape them.
74 native_tmp = string.replace(native_tmp, '\\', r'\\\\')
75 # In Cygwin, we want to use rm to delete the temporary
76 # file, because del does not exist in the sh shell.
77 rm = env.Detect('rm') or 'del'
78 else:
79 # Don't use 'rm' if the shell is not sh, because rm won't
80 # work with the Windows shells (cmd.exe or command.com) or
81 # Windows path names.
82 rm = 'del'
83
84 prefix = env.subst('$TEMPFILEPREFIX')
85 if not prefix:
86 prefix = '@'
87
88 if cmd[0:2] == ['link', '/lib']:
89 split = 2
90 else:
91 split = 1
92
93 args = map(SCons.Subst.quote_spaces, cmd[split:])
94 open(tmp, 'w').write(string.join(args, " ") + "\n")
95 # XXX Using the SCons.Action.print_actions value directly
96 # like this is bogus, but expedient. This class should
97 # really be rewritten as an Action that defines the
98 # __call__() and strfunction() methods and lets the
99 # normal action-execution logic handle whether or not to
100 # print/execute the action. The problem, though, is all
101 # of that is decided before we execute this method as
102 # part of expanding the $TEMPFILE construction variable.
103 # Consequently, refactoring this will have to wait until
104 # we get more flexible with allowing Actions to exist
105 # independently and get strung together arbitrarily like
106 # Ant tasks. In the meantime, it's going to be more
107 # user-friendly to not let obsession with architectural
108 # purity get in the way of just being helpful, so we'll
109 # reach into SCons.Action directly.
110 if SCons.Action.print_actions:
111 print("Using tempfile "+native_tmp+" for command line:\n"+
112 " ".join(map(str,cmd)))
113 return cmd[:split] + [ prefix + native_tmp + '\n' + rm, native_tmp ]
114
115 def generate(env):
116 """Add Builders and construction variables for lib to an Environment."""
117 SCons.Tool.createStaticLibBuilder(env)
118
119 if env.Detect('lib'):
120 env['AR'] = 'lib'
121 else:
122 # Recent WINDDK versions do not ship with lib.
123 env['AR'] = 'link /lib'
124 env['TEMPFILE'] = TempFileMunge
125 env['ARFLAGS'] = SCons.Util.CLVar('/nologo')
126 env['ARCOM'] = "${TEMPFILE('$AR $ARFLAGS /OUT:$TARGET $SOURCES')}"
127 env['LIBPREFIX'] = ''
128 env['LIBSUFFIX'] = '.lib'
129
130 def exists(env):
131 return env.Detect('lib') or env.Detect('link')
132
133 # vim:set ts=4 sw=4 et: