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.
28 __doc__ = """bootstrap.py
30 This script supports "bootstrap" execution of the current SCons in
31 this local source tree by copying of all necessary Python scripts and
32 modules from underneath the src/ subdirectory into a subdirectory (named
33 "bootstrap/" by default), and then executing the copied SCons with the
34 supplied command-line arguments.
36 There are a handful of options that are specific to this bootstrap.py
37 script and which are *not* passed on to the underlying SCons script.
38 All of these begin with the string "bootstrap_":
42 Sets the name of the directory into which the SCons files will
43 be copied. The default is "bootstrap" in the local subdirectory.
47 Forces a copy of all necessary files. By default, the
48 bootstrap.py script only updates the bootstrap copy if the
49 content of the source copy is different.
53 Searches for the SCons files relative to the specified DIR,
54 then relative to the directory in which this bootstrap.py
59 Only updates the bootstrap subdirectory, and then exits.
61 In addition to the above options, the bootstrap.py script understands
62 the following SCons options:
66 Changes to the specified directory before invoking SCons.
67 Because we change directory right away to the specified directory,
68 the SCons script itself doesn't need to, so this option gets
69 "eaten" by the bootstrap.py script.
73 These options are used under Aegis to specify a search path
74 for the source files that may not have been copied in to the
77 This is essentially a minimal build of SCons to bootstrap ourselves into
78 executing it for the full build of all the packages, as specified in our
79 local SConstruct file.
83 script_dir = os.path.abspath(os.path.dirname(__file__))
85 # Pre-2.3 versions of Python don't have __file__.
86 script_dir = os.path.abspath(os.path.dirname(sys.argv[0]))
88 bootstrap_dir = os.path.join(script_dir, 'bootstrap')
90 pass_through_args = []
93 requires_an_argument = 'bootstrap.py: %s requires an argument\n'
95 def must_copy(dst, src):
96 if not os.path.exists(dst):
98 return open(dst, 'rb').read() != open(src, 'rb').read()
100 search = [script_dir]
102 # Note: We don't use the getopt module to process the command-line
103 # arguments because we'd have to teach it about all of the SCons options.
105 command_line_args = sys.argv[1:]
107 while command_line_args:
108 arg = command_line_args.pop(0)
110 if arg == '--bootstrap_dir':
112 bootstrap_dir = command_line_args.pop(0)
114 sys.stderr.write(requires_an_argument % arg)
116 elif arg[:16] == '--bootstrap_dir=':
117 bootstrap_dir = arg[16:]
119 elif arg == '--bootstrap_force':
120 def must_copy(dst, src):
123 elif arg == '--bootstrap_src':
125 search.insert(0, command_line_args.pop(0))
127 sys.stderr.write(requires_an_argument % arg)
129 elif arg[:16] == '--bootstrap_src=':
130 search.insert(0, arg[16:])
132 elif arg == '--bootstrap_update':
135 elif arg in ('-C', '--directory'):
137 dir = command_line_args.pop(0)
139 sys.stderr.write(requires_an_argument % arg)
143 elif arg[:2] == '-C':
145 elif arg[:12] == '--directory=':
148 elif arg in ('-Y', '--repository'):
150 dir = command_line_args.pop(0)
152 sys.stderr.write(requires_an_argument % arg)
156 pass_through_args.extend([arg, dir])
157 elif arg[:2] == '-Y':
158 search.append(arg[2:])
159 pass_through_args.append(arg)
160 elif arg[:13] == '--repository=':
161 search.append(arg[13:])
162 pass_through_args.append(arg)
165 pass_through_args.append(arg)
167 def find(file, search=search):
169 f = os.path.join(dir, file)
170 if os.path.exists(f):
171 return os.path.normpath(f)
172 sys.stderr.write("could not find `%s' in search path:\n" % file)
173 sys.stderr.write("\t" + "\n\t".join(search) + "\n")
176 scons_py = os.path.join('src', 'script', 'scons.py')
177 src_engine = os.path.join('src', 'engine')
178 MANIFEST_in = find(os.path.join(src_engine, 'MANIFEST.in'))
180 files = [ scons_py ] + [os.path.join(src_engine, x[:-1])
181 for x in open(MANIFEST_in).readlines()]
185 dst = os.path.join(bootstrap_dir, file)
186 if must_copy(dst, src):
187 dir = os.path.split(dst)[0]
188 if not os.path.isdir(dir):
192 open(dst, 'wb').write( open(src, 'rb').read() )
199 os.path.join(bootstrap_dir, scons_py)
200 ] + pass_through_args
202 sys.stdout.write(" ".join(args) + '\n')
205 os.environ['SCONS_LIB_DIR'] = os.path.join(bootstrap_dir, src_engine)
207 os.execve(sys.executable, args, os.environ)
211 # indent-tabs-mode:nil
213 # vim: set expandtab tabstop=4 shiftwidth=4: