4 # Permission is hereby granted, free of charge, to any person obtaining
5 # a copy of this software and associated documentation files (the
6 # "Software"), to deal in the Software without restriction, including
7 # without limitation the rights to use, copy, modify, merge, publish,
8 # distribute, sublicense, and/or sell copies of the Software, and to
9 # permit persons to whom the Software is furnished to do so, subject to
10 # the following conditions:
12 # The above copyright notice and this permission notice shall be included
13 # in all copies or substantial portions of the Software.
15 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
16 # KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
17 # WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
18 # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
19 # LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
20 # OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
21 # WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
29 __doc__ = """bootstrap.py
31 This script supports "bootstrap" execution of the current SCons in
32 this local source tree by copying of all necessary Python scripts and
33 modules from underneath the src/ subdirectory into a subdirectory (named
34 "bootstrap/" by default), and then executing the copied SCons with the
35 supplied command-line arguments.
37 There are a handful of options that are specific to this bootstrap.py
38 script and which are *not* passed on to the underlying SCons script.
39 All of these begin with the string "bootstrap_":
43 Sets the name of the directory into which the SCons files will
44 be copied. The default is "bootstrap" in the local subdirectory.
48 Forces a copy of all necessary files. By default, the
49 bootstrap.py script only updates the bootstrap copy if the
50 content of the source copy is different.
54 Searches for the SCons files relative to the specified DIR,
55 then relative to the directory in which this bootstrap.py
60 Only updates the bootstrap subdirectory, and then exits.
62 In addition to the above options, the bootstrap.py script understands
63 the following SCons options:
67 Changes to the specified directory before invoking SCons.
68 Because we change directory right away to the specified directory,
69 the SCons script itself doesn't need to, so this option gets
70 "eaten" by the bootstrap.py script.
74 These options are used under Aegis to specify a search path
75 for the source files that may not have been copied in to the
78 This is essentially a minimal build of SCons to bootstrap ourselves into
79 executing it for the full build of all the packages, as specified in our
80 local SConstruct file.
84 script_dir = os.path.abspath(os.path.dirname(__file__))
86 # Pre-2.3 versions of Python don't have __file__.
87 script_dir = os.path.abspath(os.path.dirname(sys.argv[0]))
89 bootstrap_dir = os.path.join(script_dir, 'bootstrap')
91 pass_through_args = []
94 requires_an_argument = 'bootstrap.py: %s requires an argument\n'
96 def must_copy(dst, src):
97 if not os.path.exists(dst):
99 return open(dst, 'rb').read() != open(src, 'rb').read()
101 search = [script_dir]
103 # Note: We don't use the getopt module to process the command-line
104 # arguments because we'd have to teach it about all of the SCons options.
106 command_line_args = sys.argv[1:]
108 while command_line_args:
109 arg = command_line_args.pop(0)
111 if arg == '--bootstrap_dir':
113 bootstrap_dir = command_line_args.pop(0)
115 sys.stderr.write(requires_an_argument % arg)
117 elif arg[:16] == '--bootstrap_dir=':
118 bootstrap_dir = arg[16:]
120 elif arg == '--bootstrap_force':
121 def must_copy(dst, src):
124 elif arg == '--bootstrap_src':
126 search.insert(0, command_line_args.pop(0))
128 sys.stderr.write(requires_an_argument % arg)
130 elif arg[:16] == '--bootstrap_src=':
131 search.insert(0, arg[16:])
133 elif arg == '--bootstrap_update':
136 elif arg in ('-C', '--directory'):
138 dir = command_line_args.pop(0)
140 sys.stderr.write(requires_an_argument % arg)
144 elif arg[:2] == '-C':
146 elif arg[:12] == '--directory=':
149 elif arg in ('-Y', '--repository'):
151 dir = command_line_args.pop(0)
153 sys.stderr.write(requires_an_argument % arg)
157 pass_through_args.extend([arg, dir])
158 elif arg[:2] == '-Y':
159 search.append(arg[2:])
160 pass_through_args.append(arg)
161 elif arg[:13] == '--repository=':
162 search.append(arg[13:])
163 pass_through_args.append(arg)
166 pass_through_args.append(arg)
168 def find(file, search=search):
170 f = os.path.join(dir, file)
171 if os.path.exists(f):
172 return os.path.normpath(f)
173 sys.stderr.write("could not find `%s' in search path:\n" % file)
174 sys.stderr.write("\t" + string.join(search, "\n\t") + "\n")
177 scons_py = os.path.join('src', 'script', 'scons.py')
178 src_engine = os.path.join('src', 'engine')
179 MANIFEST_in = find(os.path.join(src_engine, 'MANIFEST.in'))
181 files = [ scons_py ] + map(lambda x: os.path.join(src_engine, x[:-1]),
182 open(MANIFEST_in).readlines())
186 dst = os.path.join(bootstrap_dir, file)
187 if must_copy(dst, src):
188 dir = os.path.split(dst)[0]
189 if not os.path.isdir(dir):
193 open(dst, 'wb').write( open(src, 'rb').read() )
200 os.path.join(bootstrap_dir, scons_py)
201 ] + pass_through_args
203 sys.stdout.write(string.join(args, " ") + '\n')
206 os.environ['SCONS_LIB_DIR'] = os.path.join(bootstrap_dir, src_engine)
208 os.execve(sys.executable, args, os.environ)
212 # indent-tabs-mode:nil
214 # vim: set expandtab tabstop=4 shiftwidth=4: