python (3.11.7)
1 import distutils.command.build_clib as orig
2 from distutils.errors import DistutilsSetupError
3 from distutils import log
4 from setuptools.dep_util import newer_pairwise_group
5
6
7 class ESC[4;38;5;81mbuild_clib(ESC[4;38;5;149morigESC[4;38;5;149m.ESC[4;38;5;149mbuild_clib):
8 """
9 Override the default build_clib behaviour to do the following:
10
11 1. Implement a rudimentary timestamp-based dependency system
12 so 'compile()' doesn't run every time.
13 2. Add more keys to the 'build_info' dictionary:
14 * obj_deps - specify dependencies for each object compiled.
15 this should be a dictionary mapping a key
16 with the source filename to a list of
17 dependencies. Use an empty string for global
18 dependencies.
19 * cflags - specify a list of additional flags to pass to
20 the compiler.
21 """
22
23 def build_libraries(self, libraries):
24 for (lib_name, build_info) in libraries:
25 sources = build_info.get('sources')
26 if sources is None or not isinstance(sources, (list, tuple)):
27 raise DistutilsSetupError(
28 "in 'libraries' option (library '%s'), "
29 "'sources' must be present and must be "
30 "a list of source filenames" % lib_name)
31 sources = list(sources)
32
33 log.info("building '%s' library", lib_name)
34
35 # Make sure everything is the correct type.
36 # obj_deps should be a dictionary of keys as sources
37 # and a list/tuple of files that are its dependencies.
38 obj_deps = build_info.get('obj_deps', dict())
39 if not isinstance(obj_deps, dict):
40 raise DistutilsSetupError(
41 "in 'libraries' option (library '%s'), "
42 "'obj_deps' must be a dictionary of "
43 "type 'source: list'" % lib_name)
44 dependencies = []
45
46 # Get the global dependencies that are specified by the '' key.
47 # These will go into every source's dependency list.
48 global_deps = obj_deps.get('', list())
49 if not isinstance(global_deps, (list, tuple)):
50 raise DistutilsSetupError(
51 "in 'libraries' option (library '%s'), "
52 "'obj_deps' must be a dictionary of "
53 "type 'source: list'" % lib_name)
54
55 # Build the list to be used by newer_pairwise_group
56 # each source will be auto-added to its dependencies.
57 for source in sources:
58 src_deps = [source]
59 src_deps.extend(global_deps)
60 extra_deps = obj_deps.get(source, list())
61 if not isinstance(extra_deps, (list, tuple)):
62 raise DistutilsSetupError(
63 "in 'libraries' option (library '%s'), "
64 "'obj_deps' must be a dictionary of "
65 "type 'source: list'" % lib_name)
66 src_deps.extend(extra_deps)
67 dependencies.append(src_deps)
68
69 expected_objects = self.compiler.object_filenames(
70 sources,
71 output_dir=self.build_temp,
72 )
73
74 if (
75 newer_pairwise_group(dependencies, expected_objects)
76 != ([], [])
77 ):
78 # First, compile the source code to object files in the library
79 # directory. (This should probably change to putting object
80 # files in a temporary build directory.)
81 macros = build_info.get('macros')
82 include_dirs = build_info.get('include_dirs')
83 cflags = build_info.get('cflags')
84 self.compiler.compile(
85 sources,
86 output_dir=self.build_temp,
87 macros=macros,
88 include_dirs=include_dirs,
89 extra_postargs=cflags,
90 debug=self.debug
91 )
92
93 # Now "link" the object files together into a static library.
94 # (On Unix at least, this isn't really linking -- it just
95 # builds an archive. Whatever.)
96 self.compiler.create_static_lib(
97 expected_objects,
98 lib_name,
99 output_dir=self.build_clib,
100 debug=self.debug
101 )
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