blob: 346707fa90dc8d3af4a5e767e5564c5b015e9c59 [file] [log] [blame]
Fred Drake70b014d2001-07-18 18:39:56 +00001"""Provide access to Python's configuration information. The specific
2configuration variables available depend heavily on the platform and
3configuration. The values may be retrieved using
4get_config_var(name), and the list of variables is available via
5get_config_vars().keys(). Additional convenience functions are also
6available.
Greg Ward1190ee31998-12-18 23:46:33 +00007
8Written by: Fred L. Drake, Jr.
9Email: <fdrake@acm.org>
Greg Ward1190ee31998-12-18 23:46:33 +000010"""
11
Greg Ward82d71ca2000-06-03 00:44:30 +000012__revision__ = "$Id$"
Greg Ward1190ee31998-12-18 23:46:33 +000013
Guido van Rossum63236cf2007-05-25 18:39:29 +000014import io
Greg Ward9ddaaa11999-01-06 14:46:06 +000015import os
16import re
Greg Ward9ddaaa11999-01-06 14:46:06 +000017import sys
Greg Ward1190ee31998-12-18 23:46:33 +000018
Guido van Rossum45aecf42006-03-15 04:58:47 +000019from .errors import DistutilsPlatformError
Greg Warda0ca3f22000-02-02 00:05:14 +000020
Greg Ward879f0f12000-09-15 01:15:08 +000021# These are needed in a couple of spots, so just compute them once.
Greg Wardcf6bea32000-04-10 01:15:06 +000022PREFIX = os.path.normpath(sys.prefix)
23EXEC_PREFIX = os.path.normpath(sys.exec_prefix)
Fred Drakec1ee39a2000-03-09 15:54:52 +000024
Fred Drake16c8d702002-06-04 15:28:21 +000025# python_build: (Boolean) if true, we're either building Python or
26# building an extension with an un-installed Python, so we use
27# different (hard-wired) directories.
Andrew M. Kuchlingc14fa302001-01-17 15:16:52 +000028
Fred Drake16c8d702002-06-04 15:28:21 +000029argv0_path = os.path.dirname(os.path.abspath(sys.executable))
30landmark = os.path.join(argv0_path, "Modules", "Setup")
Michael W. Hudson6b7d69d2002-07-12 09:16:44 +000031
32python_build = os.path.isfile(landmark)
33
Thomas Wouters49fd7fa2006-04-21 10:40:58 +000034del landmark
Fred Drakec1ee39a2000-03-09 15:54:52 +000035
Fred Drakec916cdc2001-08-02 20:03:12 +000036
Martin v. Löwisdf37c8c2005-03-03 11:08:03 +000037def get_python_version():
Andrew M. Kuchling0ff98b92002-11-14 01:43:00 +000038 """Return a string containing the major and minor Python version,
39 leaving off the patchlevel. Sample return values could be '1.5'
40 or '2.2'.
41 """
42 return sys.version[:3]
43
44
Greg Wardd38e6f72000-04-10 01:17:49 +000045def get_python_inc(plat_specific=0, prefix=None):
Greg Ward7d73b9e2000-03-09 03:16:05 +000046 """Return the directory containing installed Python header files.
Fred Drakec1ee39a2000-03-09 15:54:52 +000047
48 If 'plat_specific' is false (the default), this is the path to the
49 non-platform-specific header files, i.e. Python.h and so on;
50 otherwise, this is the path to platform-specific header files
Martin v. Löwis4f1cd8b2001-07-26 13:41:06 +000051 (namely pyconfig.h).
Fred Drakec1ee39a2000-03-09 15:54:52 +000052
Greg Wardd38e6f72000-04-10 01:17:49 +000053 If 'prefix' is supplied, use it instead of sys.prefix or
54 sys.exec_prefix -- i.e., ignore 'plat_specific'.
Fred Drakeb94b8492001-12-06 20:51:35 +000055 """
Greg Wardd38e6f72000-04-10 01:17:49 +000056 if prefix is None:
Fred Drake70b014d2001-07-18 18:39:56 +000057 prefix = plat_specific and EXEC_PREFIX or PREFIX
Greg Ward7d73b9e2000-03-09 03:16:05 +000058 if os.name == "posix":
Andrew M. Kuchlingc14fa302001-01-17 15:16:52 +000059 if python_build:
Fred Drake16c8d702002-06-04 15:28:21 +000060 base = os.path.dirname(os.path.abspath(sys.executable))
61 if plat_specific:
62 inc_dir = base
63 else:
64 inc_dir = os.path.join(base, "Include")
65 if not os.path.exists(inc_dir):
66 inc_dir = os.path.join(os.path.dirname(base), "Include")
67 return inc_dir
Martin v. Löwisdf37c8c2005-03-03 11:08:03 +000068 return os.path.join(prefix, "include", "python" + get_python_version())
Greg Ward7d73b9e2000-03-09 03:16:05 +000069 elif os.name == "nt":
Fred Drakec916cdc2001-08-02 20:03:12 +000070 return os.path.join(prefix, "include")
Greg Ward7d73b9e2000-03-09 03:16:05 +000071 elif os.name == "mac":
Neal Norwitz80a3e0a2002-06-26 22:05:33 +000072 if plat_specific:
Martin v. Löwis23b44a32003-10-24 20:09:23 +000073 return os.path.join(prefix, "Mac", "Include")
Neal Norwitz80a3e0a2002-06-26 22:05:33 +000074 else:
Martin v. Löwis23b44a32003-10-24 20:09:23 +000075 return os.path.join(prefix, "Include")
Marc-André Lemburg2544f512002-01-31 18:56:00 +000076 elif os.name == "os2":
77 return os.path.join(prefix, "Include")
Greg Ward7d73b9e2000-03-09 03:16:05 +000078 else:
Fred Drake70b014d2001-07-18 18:39:56 +000079 raise DistutilsPlatformError(
80 "I don't know where Python installs its C header files "
81 "on platform '%s'" % os.name)
Greg Ward7d73b9e2000-03-09 03:16:05 +000082
83
Greg Wardd38e6f72000-04-10 01:17:49 +000084def get_python_lib(plat_specific=0, standard_lib=0, prefix=None):
Greg Ward7d73b9e2000-03-09 03:16:05 +000085 """Return the directory containing the Python library (standard or
Fred Drakec1ee39a2000-03-09 15:54:52 +000086 site additions).
Greg Ward7d73b9e2000-03-09 03:16:05 +000087
Fred Drakec1ee39a2000-03-09 15:54:52 +000088 If 'plat_specific' is true, return the directory containing
89 platform-specific modules, i.e. any module from a non-pure-Python
90 module distribution; otherwise, return the platform-shared library
91 directory. If 'standard_lib' is true, return the directory
92 containing standard Python library modules; otherwise, return the
93 directory for site-specific modules.
94
Greg Wardd38e6f72000-04-10 01:17:49 +000095 If 'prefix' is supplied, use it instead of sys.prefix or
96 sys.exec_prefix -- i.e., ignore 'plat_specific'.
Fred Drakec1ee39a2000-03-09 15:54:52 +000097 """
Greg Wardd38e6f72000-04-10 01:17:49 +000098 if prefix is None:
Fred Drake70b014d2001-07-18 18:39:56 +000099 prefix = plat_specific and EXEC_PREFIX or PREFIX
Fred Drakec916cdc2001-08-02 20:03:12 +0000100
Greg Ward7d73b9e2000-03-09 03:16:05 +0000101 if os.name == "posix":
Greg Wardcf6bea32000-04-10 01:15:06 +0000102 libpython = os.path.join(prefix,
Andrew M. Kuchling0ff98b92002-11-14 01:43:00 +0000103 "lib", "python" + get_python_version())
Greg Ward7d73b9e2000-03-09 03:16:05 +0000104 if standard_lib:
105 return libpython
106 else:
Fred Drakec1ee39a2000-03-09 15:54:52 +0000107 return os.path.join(libpython, "site-packages")
Greg Ward7d73b9e2000-03-09 03:16:05 +0000108
109 elif os.name == "nt":
110 if standard_lib:
Fred Drakec916cdc2001-08-02 20:03:12 +0000111 return os.path.join(prefix, "Lib")
Greg Ward7d73b9e2000-03-09 03:16:05 +0000112 else:
Martin v. Löwisdf37c8c2005-03-03 11:08:03 +0000113 if get_python_version() < "2.2":
Greg Wardf17efb92001-08-23 20:53:27 +0000114 return prefix
115 else:
116 return os.path.join(PREFIX, "Lib", "site-packages")
Greg Ward7d73b9e2000-03-09 03:16:05 +0000117
118 elif os.name == "mac":
Greg Warddc9fe8a2000-08-02 01:49:40 +0000119 if plat_specific:
Greg Ward7d73b9e2000-03-09 03:16:05 +0000120 if standard_lib:
Jack Jansen212a2e12001-09-04 12:01:49 +0000121 return os.path.join(prefix, "Lib", "lib-dynload")
Greg Ward7d73b9e2000-03-09 03:16:05 +0000122 else:
Jack Jansen212a2e12001-09-04 12:01:49 +0000123 return os.path.join(prefix, "Lib", "site-packages")
Greg Ward7d73b9e2000-03-09 03:16:05 +0000124 else:
125 if standard_lib:
Fred Drakec916cdc2001-08-02 20:03:12 +0000126 return os.path.join(prefix, "Lib")
Greg Ward7d73b9e2000-03-09 03:16:05 +0000127 else:
Jack Jansen212a2e12001-09-04 12:01:49 +0000128 return os.path.join(prefix, "Lib", "site-packages")
Marc-André Lemburg2544f512002-01-31 18:56:00 +0000129
130 elif os.name == "os2":
131 if standard_lib:
132 return os.path.join(PREFIX, "Lib")
133 else:
134 return os.path.join(PREFIX, "Lib", "site-packages")
135
Greg Ward7d73b9e2000-03-09 03:16:05 +0000136 else:
Fred Drake70b014d2001-07-18 18:39:56 +0000137 raise DistutilsPlatformError(
138 "I don't know where Python installs its library "
139 "on platform '%s'" % os.name)
Greg Ward7d73b9e2000-03-09 03:16:05 +0000140
Greg Ward7d73b9e2000-03-09 03:16:05 +0000141
Fred Drake70b014d2001-07-18 18:39:56 +0000142def customize_compiler(compiler):
Fred Drakec916cdc2001-08-02 20:03:12 +0000143 """Do any platform-specific customization of a CCompiler instance.
144
145 Mainly needed on Unix, so we can plug in the information that
146 varies across Unices and is stored in Python's Makefile.
Greg Wardbb7baa72000-06-25 02:09:14 +0000147 """
148 if compiler.compiler_type == "unix":
Martin v. Löwisd7c795e2005-04-25 07:14:03 +0000149 (cc, cxx, opt, cflags, ccshared, ldshared, so_ext) = \
Tim Petersfffc4b72005-05-18 02:18:09 +0000150 get_config_vars('CC', 'CXX', 'OPT', 'CFLAGS',
Brett Cannon08cd5982005-04-24 22:26:38 +0000151 'CCSHARED', 'LDSHARED', 'SO')
Greg Wardbb7baa72000-06-25 02:09:14 +0000152
Guido van Rossume2b70bc2006-08-18 22:13:04 +0000153 if 'CC' in os.environ:
Andrew M. Kuchling29c86232002-11-04 19:53:24 +0000154 cc = os.environ['CC']
Guido van Rossume2b70bc2006-08-18 22:13:04 +0000155 if 'CXX' in os.environ:
Gustavo Niemeyer6b016852002-11-05 16:12:02 +0000156 cxx = os.environ['CXX']
Guido van Rossume2b70bc2006-08-18 22:13:04 +0000157 if 'LDSHARED' in os.environ:
Anthony Baxter22dcf662004-10-13 15:54:17 +0000158 ldshared = os.environ['LDSHARED']
Guido van Rossume2b70bc2006-08-18 22:13:04 +0000159 if 'CPP' in os.environ:
Andrew M. Kuchling29c86232002-11-04 19:53:24 +0000160 cpp = os.environ['CPP']
161 else:
162 cpp = cc + " -E" # not always
Guido van Rossume2b70bc2006-08-18 22:13:04 +0000163 if 'LDFLAGS' in os.environ:
Andrew M. Kuchling29c86232002-11-04 19:53:24 +0000164 ldshared = ldshared + ' ' + os.environ['LDFLAGS']
Guido van Rossume2b70bc2006-08-18 22:13:04 +0000165 if 'CFLAGS' in os.environ:
Martin v. Löwisd7c795e2005-04-25 07:14:03 +0000166 cflags = opt + ' ' + os.environ['CFLAGS']
Andrew M. Kuchling29c86232002-11-04 19:53:24 +0000167 ldshared = ldshared + ' ' + os.environ['CFLAGS']
Guido van Rossume2b70bc2006-08-18 22:13:04 +0000168 if 'CPPFLAGS' in os.environ:
Andrew M. Kuchling29c86232002-11-04 19:53:24 +0000169 cpp = cpp + ' ' + os.environ['CPPFLAGS']
Martin v. Löwisd7c795e2005-04-25 07:14:03 +0000170 cflags = cflags + ' ' + os.environ['CPPFLAGS']
Andrew M. Kuchling29c86232002-11-04 19:53:24 +0000171 ldshared = ldshared + ' ' + os.environ['CPPFLAGS']
172
Martin v. Löwisd7c795e2005-04-25 07:14:03 +0000173 cc_cmd = cc + ' ' + cflags
Greg Ward879f0f12000-09-15 01:15:08 +0000174 compiler.set_executables(
Andrew M. Kuchling29c86232002-11-04 19:53:24 +0000175 preprocessor=cpp,
Greg Ward879f0f12000-09-15 01:15:08 +0000176 compiler=cc_cmd,
177 compiler_so=cc_cmd + ' ' + ccshared,
Gustavo Niemeyer6b016852002-11-05 16:12:02 +0000178 compiler_cxx=cxx,
Greg Ward879f0f12000-09-15 01:15:08 +0000179 linker_so=ldshared,
180 linker_exe=cc)
181
182 compiler.shared_lib_extension = so_ext
Greg Wardbb7baa72000-06-25 02:09:14 +0000183
184
Greg Ward9ddaaa11999-01-06 14:46:06 +0000185def get_config_h_filename():
Martin v. Löwis4f1cd8b2001-07-26 13:41:06 +0000186 """Return full pathname of installed pyconfig.h file."""
Fred Drakec916cdc2001-08-02 20:03:12 +0000187 if python_build:
Thomas Wouters49fd7fa2006-04-21 10:40:58 +0000188 inc_dir = argv0_path
Fred Drakec916cdc2001-08-02 20:03:12 +0000189 else:
190 inc_dir = get_python_inc(plat_specific=1)
Martin v. Löwisdf37c8c2005-03-03 11:08:03 +0000191 if get_python_version() < '2.2':
Marc-André Lemburg7cf92fa2001-07-26 18:06:58 +0000192 config_h = 'config.h'
193 else:
194 # The name of the config.h file changed in 2.2
195 config_h = 'pyconfig.h'
196 return os.path.join(inc_dir, config_h)
Greg Ward7d73b9e2000-03-09 03:16:05 +0000197
Greg Ward1190ee31998-12-18 23:46:33 +0000198
Greg Ward9ddaaa11999-01-06 14:46:06 +0000199def get_makefile_filename():
Fred Drake522af3a1999-01-06 16:28:34 +0000200 """Return full pathname of installed Makefile from the Python build."""
Andrew M. Kuchlingc14fa302001-01-17 15:16:52 +0000201 if python_build:
Fred Drake16c8d702002-06-04 15:28:21 +0000202 return os.path.join(os.path.dirname(sys.executable), "Makefile")
Fred Drakec1ee39a2000-03-09 15:54:52 +0000203 lib_dir = get_python_lib(plat_specific=1, standard_lib=1)
204 return os.path.join(lib_dir, "config", "Makefile")
Greg Ward7d73b9e2000-03-09 03:16:05 +0000205
Greg Ward1190ee31998-12-18 23:46:33 +0000206
Greg Ward9ddaaa11999-01-06 14:46:06 +0000207def parse_config_h(fp, g=None):
Fred Drakec1ee39a2000-03-09 15:54:52 +0000208 """Parse a config.h-style file.
209
210 A dictionary containing name/value pairs is returned. If an
211 optional dictionary is passed in as the second argument, it is
212 used instead of a new dictionary.
Fred Drake522af3a1999-01-06 16:28:34 +0000213 """
Greg Ward9ddaaa11999-01-06 14:46:06 +0000214 if g is None:
215 g = {}
Thomas Wouters49fd7fa2006-04-21 10:40:58 +0000216 define_rx = re.compile("#define ([A-Z][A-Za-z0-9_]+) (.*)\n")
217 undef_rx = re.compile("/[*] #undef ([A-Z][A-Za-z0-9_]+) [*]/\n")
Greg Ward9ddaaa11999-01-06 14:46:06 +0000218 #
Greg Ward1190ee31998-12-18 23:46:33 +0000219 while 1:
220 line = fp.readline()
221 if not line:
222 break
223 m = define_rx.match(line)
224 if m:
225 n, v = m.group(1, 2)
Jeremy Hyltona5f4c072002-11-05 20:11:08 +0000226 try: v = int(v)
Greg Ward3c8e54b1998-12-22 12:42:04 +0000227 except ValueError: pass
228 g[n] = v
Greg Ward1190ee31998-12-18 23:46:33 +0000229 else:
230 m = undef_rx.match(line)
231 if m:
232 g[m.group(1)] = 0
Greg Ward9ddaaa11999-01-06 14:46:06 +0000233 return g
Greg Ward1190ee31998-12-18 23:46:33 +0000234
Greg Wardd283ce72000-09-17 00:53:02 +0000235
236# Regexes needed for parsing Makefile (and similar syntaxes,
237# like old-style Setup files).
238_variable_rx = re.compile("([a-zA-Z][a-zA-Z0-9_]+)\s*=\s*(.*)")
239_findvar1_rx = re.compile(r"\$\(([A-Za-z][A-Za-z0-9_]*)\)")
240_findvar2_rx = re.compile(r"\${([A-Za-z][A-Za-z0-9_]*)}")
241
Greg Ward3fff8d22000-09-15 00:03:13 +0000242def parse_makefile(fn, g=None):
Fred Drakec1ee39a2000-03-09 15:54:52 +0000243 """Parse a Makefile-style file.
244
245 A dictionary containing name/value pairs is returned. If an
246 optional dictionary is passed in as the second argument, it is
247 used instead of a new dictionary.
Fred Drake522af3a1999-01-06 16:28:34 +0000248 """
Greg Ward3fff8d22000-09-15 00:03:13 +0000249 from distutils.text_file import TextFile
Greg Wardd283ce72000-09-17 00:53:02 +0000250 fp = TextFile(fn, strip_comments=1, skip_blanks=1, join_lines=1)
Greg Ward3fff8d22000-09-15 00:03:13 +0000251
Greg Ward9ddaaa11999-01-06 14:46:06 +0000252 if g is None:
253 g = {}
Greg Ward1190ee31998-12-18 23:46:33 +0000254 done = {}
255 notdone = {}
Greg Ward3fff8d22000-09-15 00:03:13 +0000256
Greg Ward1190ee31998-12-18 23:46:33 +0000257 while 1:
258 line = fp.readline()
Greg Wardd283ce72000-09-17 00:53:02 +0000259 if line is None: # eof
Greg Ward1190ee31998-12-18 23:46:33 +0000260 break
Greg Wardd283ce72000-09-17 00:53:02 +0000261 m = _variable_rx.match(line)
Greg Ward1190ee31998-12-18 23:46:33 +0000262 if m:
263 n, v = m.group(1, 2)
Neal Norwitz9d72bb42007-04-17 08:48:32 +0000264 v = v.strip()
Greg Ward1190ee31998-12-18 23:46:33 +0000265 if "$" in v:
266 notdone[n] = v
267 else:
Jeremy Hyltona5f4c072002-11-05 20:11:08 +0000268 try: v = int(v)
Greg Ward3c8e54b1998-12-22 12:42:04 +0000269 except ValueError: pass
Greg Ward1190ee31998-12-18 23:46:33 +0000270 done[n] = v
271
272 # do variable interpolation here
Greg Ward1190ee31998-12-18 23:46:33 +0000273 while notdone:
Guido van Rossumcc2b0162007-02-11 06:12:03 +0000274 for name in list(notdone):
Greg Ward1190ee31998-12-18 23:46:33 +0000275 value = notdone[name]
Greg Wardd283ce72000-09-17 00:53:02 +0000276 m = _findvar1_rx.search(value) or _findvar2_rx.search(value)
Greg Ward1190ee31998-12-18 23:46:33 +0000277 if m:
278 n = m.group(1)
Martin v. Löwisd7c795e2005-04-25 07:14:03 +0000279 found = True
Guido van Rossume2b70bc2006-08-18 22:13:04 +0000280 if n in done:
Martin v. Löwisd7c795e2005-04-25 07:14:03 +0000281 item = str(done[n])
Guido van Rossume2b70bc2006-08-18 22:13:04 +0000282 elif n in notdone:
Greg Ward1190ee31998-12-18 23:46:33 +0000283 # get it on a subsequent round
Martin v. Löwisd7c795e2005-04-25 07:14:03 +0000284 found = False
Guido van Rossume2b70bc2006-08-18 22:13:04 +0000285 elif n in os.environ:
Martin v. Löwisd7c795e2005-04-25 07:14:03 +0000286 # do it like make: fall back to environment
287 item = os.environ[n]
Greg Ward1190ee31998-12-18 23:46:33 +0000288 else:
Martin v. Löwisd7c795e2005-04-25 07:14:03 +0000289 done[n] = item = ""
290 if found:
Greg Ward1190ee31998-12-18 23:46:33 +0000291 after = value[m.end():]
Martin v. Löwisd7c795e2005-04-25 07:14:03 +0000292 value = value[:m.start()] + item + after
Greg Ward1190ee31998-12-18 23:46:33 +0000293 if "$" in after:
294 notdone[name] = value
295 else:
Jeremy Hyltona5f4c072002-11-05 20:11:08 +0000296 try: value = int(value)
Andrew M. Kuchlingb11bd032001-01-16 16:33:28 +0000297 except ValueError:
Neal Norwitz9d72bb42007-04-17 08:48:32 +0000298 done[name] = value.strip()
Andrew M. Kuchlingb11bd032001-01-16 16:33:28 +0000299 else:
300 done[name] = value
Greg Ward1190ee31998-12-18 23:46:33 +0000301 del notdone[name]
302 else:
Greg Ward3c8e54b1998-12-22 12:42:04 +0000303 # bogus variable reference; just drop it since we can't deal
Greg Ward1190ee31998-12-18 23:46:33 +0000304 del notdone[name]
305
Greg Wardd283ce72000-09-17 00:53:02 +0000306 fp.close()
307
Greg Ward1190ee31998-12-18 23:46:33 +0000308 # save the results in the global dictionary
309 g.update(done)
Greg Ward9ddaaa11999-01-06 14:46:06 +0000310 return g
Greg Ward1190ee31998-12-18 23:46:33 +0000311
312
Greg Wardd283ce72000-09-17 00:53:02 +0000313def expand_makefile_vars(s, vars):
314 """Expand Makefile-style variables -- "${foo}" or "$(foo)" -- in
315 'string' according to 'vars' (a dictionary mapping variable names to
316 values). Variables not present in 'vars' are silently expanded to the
317 empty string. The variable values in 'vars' should not contain further
318 variable expansions; if 'vars' is the output of 'parse_makefile()',
319 you're fine. Returns a variable-expanded version of 's'.
320 """
321
322 # This algorithm does multiple expansion, so if vars['foo'] contains
323 # "${bar}", it will expand ${foo} to ${bar}, and then expand
324 # ${bar}... and so forth. This is fine as long as 'vars' comes from
325 # 'parse_makefile()', which takes care of such expansions eagerly,
326 # according to make's variable expansion semantics.
327
328 while 1:
329 m = _findvar1_rx.search(s) or _findvar2_rx.search(s)
330 if m:
Greg Wardd283ce72000-09-17 00:53:02 +0000331 (beg, end) = m.span()
332 s = s[0:beg] + vars.get(m.group(1)) + s[end:]
333 else:
334 break
335 return s
336
337
Greg Ward879f0f12000-09-15 01:15:08 +0000338_config_vars = None
339
Greg Ward9ddaaa11999-01-06 14:46:06 +0000340def _init_posix():
Fred Drake522af3a1999-01-06 16:28:34 +0000341 """Initialize the module as appropriate for POSIX systems."""
Greg Ward879f0f12000-09-15 01:15:08 +0000342 g = {}
Greg Warda0ca3f22000-02-02 00:05:14 +0000343 # load the installed Makefile:
Greg Warda570c052000-05-23 23:14:00 +0000344 try:
345 filename = get_makefile_filename()
Greg Ward3fff8d22000-09-15 00:03:13 +0000346 parse_makefile(filename, g)
Guido van Rossumb940e112007-01-10 16:19:56 +0000347 except IOError as msg:
Greg Warda570c052000-05-23 23:14:00 +0000348 my_msg = "invalid Python installation: unable to open %s" % filename
349 if hasattr(msg, "strerror"):
350 my_msg = my_msg + " (%s)" % msg.strerror
351
Fred Drake70b014d2001-07-18 18:39:56 +0000352 raise DistutilsPlatformError(my_msg)
Fred Drakec916cdc2001-08-02 20:03:12 +0000353
Thomas Wouters49fd7fa2006-04-21 10:40:58 +0000354 # load the installed pyconfig.h:
355 try:
356 filename = get_config_h_filename()
Guido van Rossum63236cf2007-05-25 18:39:29 +0000357 parse_config_h(io.open(filename), g)
Guido van Rossumb940e112007-01-10 16:19:56 +0000358 except IOError as msg:
Thomas Wouters49fd7fa2006-04-21 10:40:58 +0000359 my_msg = "invalid Python installation: unable to open %s" % filename
360 if hasattr(msg, "strerror"):
361 my_msg = my_msg + " (%s)" % msg.strerror
362
363 raise DistutilsPlatformError(my_msg)
364
Jack Jansen6b08a402004-06-03 12:41:45 +0000365 # On MacOSX we need to check the setting of the environment variable
366 # MACOSX_DEPLOYMENT_TARGET: configure bases some choices on it so
367 # it needs to be compatible.
Jack Jansenbe954622004-12-26 23:07:48 +0000368 # If it isn't set we set it to the configure-time value
Guido van Rossume2b70bc2006-08-18 22:13:04 +0000369 if sys.platform == 'darwin' and 'MACOSX_DEPLOYMENT_TARGET' in g:
Thomas Wouters477c8d52006-05-27 19:21:47 +0000370 cfg_target = g['MACOSX_DEPLOYMENT_TARGET']
Jack Jansen6b08a402004-06-03 12:41:45 +0000371 cur_target = os.getenv('MACOSX_DEPLOYMENT_TARGET', '')
Jack Jansenbe954622004-12-26 23:07:48 +0000372 if cur_target == '':
373 cur_target = cfg_target
374 os.putenv('MACOSX_DEPLOYMENT_TARGET', cfg_target)
Guido van Rossumc1f779c2007-07-03 08:25:58 +0000375 elif [int(x) for x in cfg_target.split('.')] > [int(x) for x in cur_target.split('.')]:
Jack Jansen6b08a402004-06-03 12:41:45 +0000376 my_msg = ('$MACOSX_DEPLOYMENT_TARGET mismatch: now "%s" but "%s" during configure'
377 % (cur_target, cfg_target))
378 raise DistutilsPlatformError(my_msg)
Tim Peters182b5ac2004-07-18 06:16:08 +0000379
Greg Ward4f880282000-06-27 01:59:06 +0000380 # On AIX, there are wrong paths to the linker scripts in the Makefile
381 # -- these paths are relative to the Python source, but when installed
382 # the scripts are in another directory.
Neil Schemenauer1a020862001-02-16 03:31:13 +0000383 if python_build:
Andrew M. Kuchling63357732001-02-28 19:40:27 +0000384 g['LDSHARED'] = g['BLDSHARED']
Fred Drakeb94b8492001-12-06 20:51:35 +0000385
Martin v. Löwisdf37c8c2005-03-03 11:08:03 +0000386 elif get_python_version() < '2.1':
Andrew M. Kuchling045af6f2001-09-05 12:02:59 +0000387 # The following two branches are for 1.5.2 compatibility.
388 if sys.platform == 'aix4': # what about AIX 3.x ?
389 # Linker script is in the config directory, not in Modules as the
390 # Makefile says.
391 python_lib = get_python_lib(standard_lib=1)
392 ld_so_aix = os.path.join(python_lib, 'config', 'ld_so_aix')
393 python_exp = os.path.join(python_lib, 'config', 'python.exp')
Greg Ward879f0f12000-09-15 01:15:08 +0000394
Andrew M. Kuchling045af6f2001-09-05 12:02:59 +0000395 g['LDSHARED'] = "%s %s -bI:%s" % (ld_so_aix, g['CC'], python_exp)
396
397 elif sys.platform == 'beos':
398 # Linker script is in the config directory. In the Makefile it is
399 # relative to the srcdir, which after installation no longer makes
400 # sense.
401 python_lib = get_python_lib(standard_lib=1)
Neal Norwitz9d72bb42007-04-17 08:48:32 +0000402 linkerscript_path = g['LDSHARED'].split()[0]
Andrew M. Kuchling33635aa2002-11-13 17:03:05 +0000403 linkerscript_name = os.path.basename(linkerscript_path)
Jeremy Hyltona5f4c072002-11-05 20:11:08 +0000404 linkerscript = os.path.join(python_lib, 'config',
405 linkerscript_name)
Fred Drakeb94b8492001-12-06 20:51:35 +0000406
Andrew M. Kuchling045af6f2001-09-05 12:02:59 +0000407 # XXX this isn't the right place to do this: adding the Python
408 # library to the link, if needed, should be in the "build_ext"
409 # command. (It's also needed for non-MS compilers on Windows, and
410 # it's taken care of for them by the 'build_ext.get_libraries()'
411 # method.)
412 g['LDSHARED'] = ("%s -L%s/lib -lpython%s" %
Martin v. Löwisdf37c8c2005-03-03 11:08:03 +0000413 (linkerscript, PREFIX, get_python_version()))
Fred Drakeb94b8492001-12-06 20:51:35 +0000414
Greg Ward879f0f12000-09-15 01:15:08 +0000415 global _config_vars
416 _config_vars = g
Greg Ward66e966f2000-09-01 01:23:26 +0000417
Greg Ward9ddaaa11999-01-06 14:46:06 +0000418
Greg Ward4d74d731999-06-08 01:58:36 +0000419def _init_nt():
420 """Initialize the module as appropriate for NT"""
Greg Ward879f0f12000-09-15 01:15:08 +0000421 g = {}
Greg Ward4d74d731999-06-08 01:58:36 +0000422 # set basic install directories
Fred Drakec1ee39a2000-03-09 15:54:52 +0000423 g['LIBDEST'] = get_python_lib(plat_specific=0, standard_lib=1)
424 g['BINLIBDEST'] = get_python_lib(plat_specific=1, standard_lib=1)
Greg Ward4d74d731999-06-08 01:58:36 +0000425
Greg Ward32162e81999-08-29 18:22:13 +0000426 # XXX hmmm.. a normal install puts include files here
Fred Drakec1ee39a2000-03-09 15:54:52 +0000427 g['INCLUDEPY'] = get_python_inc(plat_specific=0)
Greg Ward32162e81999-08-29 18:22:13 +0000428
Fred Drake69e2c6e2000-02-08 15:55:42 +0000429 g['SO'] = '.pyd'
Greg Ward82d71ca2000-06-03 00:44:30 +0000430 g['EXE'] = ".exe"
Greg Ward879f0f12000-09-15 01:15:08 +0000431
432 global _config_vars
433 _config_vars = g
Greg Ward82d71ca2000-06-03 00:44:30 +0000434
Fred Drake69e2c6e2000-02-08 15:55:42 +0000435
Greg Ward0eff87a2000-03-07 03:30:09 +0000436def _init_mac():
437 """Initialize the module as appropriate for Macintosh systems"""
Greg Ward879f0f12000-09-15 01:15:08 +0000438 g = {}
Greg Ward0eff87a2000-03-07 03:30:09 +0000439 # set basic install directories
Fred Drakec1ee39a2000-03-09 15:54:52 +0000440 g['LIBDEST'] = get_python_lib(plat_specific=0, standard_lib=1)
441 g['BINLIBDEST'] = get_python_lib(plat_specific=1, standard_lib=1)
Greg Ward0eff87a2000-03-07 03:30:09 +0000442
443 # XXX hmmm.. a normal install puts include files here
Fred Drakec1ee39a2000-03-09 15:54:52 +0000444 g['INCLUDEPY'] = get_python_inc(plat_specific=0)
Greg Ward0eff87a2000-03-07 03:30:09 +0000445
Jack Jansendd13a202001-05-17 12:52:01 +0000446 import MacOS
447 if not hasattr(MacOS, 'runtimemodel'):
Guido van Rossum99f9baa2001-05-17 15:03:14 +0000448 g['SO'] = '.ppc.slb'
Jack Jansendd13a202001-05-17 12:52:01 +0000449 else:
450 g['SO'] = '.%s.slb' % MacOS.runtimemodel
Greg Ward7d73b9e2000-03-09 03:16:05 +0000451
452 # XXX are these used anywhere?
Greg Wardcf6bea32000-04-10 01:15:06 +0000453 g['install_lib'] = os.path.join(EXEC_PREFIX, "Lib")
454 g['install_platlib'] = os.path.join(EXEC_PREFIX, "Mac", "Lib")
Greg Ward0eff87a2000-03-07 03:30:09 +0000455
Jack Jansenab5320b2002-06-26 15:42:49 +0000456 # These are used by the extension module build
457 g['srcdir'] = ':'
Greg Ward879f0f12000-09-15 01:15:08 +0000458 global _config_vars
459 _config_vars = g
Greg Ward9ddaaa11999-01-06 14:46:06 +0000460
Fred Drake69e2c6e2000-02-08 15:55:42 +0000461
Marc-André Lemburg2544f512002-01-31 18:56:00 +0000462def _init_os2():
463 """Initialize the module as appropriate for OS/2"""
464 g = {}
465 # set basic install directories
466 g['LIBDEST'] = get_python_lib(plat_specific=0, standard_lib=1)
467 g['BINLIBDEST'] = get_python_lib(plat_specific=1, standard_lib=1)
468
469 # XXX hmmm.. a normal install puts include files here
470 g['INCLUDEPY'] = get_python_inc(plat_specific=0)
471
472 g['SO'] = '.pyd'
473 g['EXE'] = ".exe"
474
475 global _config_vars
476 _config_vars = g
477
478
Greg Ward879f0f12000-09-15 01:15:08 +0000479def get_config_vars(*args):
480 """With no arguments, return a dictionary of all configuration
481 variables relevant for the current platform. Generally this includes
482 everything needed to build extensions and install both pure modules and
483 extensions. On Unix, this means every variable defined in Python's
484 installed Makefile; on Windows and Mac OS it's a much smaller set.
485
486 With arguments, return a list of values that result from looking up
487 each argument in the configuration variable dictionary.
488 """
489 global _config_vars
490 if _config_vars is None:
Greg Ward879f0f12000-09-15 01:15:08 +0000491 func = globals().get("_init_" + os.name)
492 if func:
493 func()
494 else:
495 _config_vars = {}
496
497 # Normalized versions of prefix and exec_prefix are handy to have;
498 # in fact, these are the standard versions used most places in the
499 # Distutils.
500 _config_vars['prefix'] = PREFIX
501 _config_vars['exec_prefix'] = EXEC_PREFIX
502
Thomas Wouters477c8d52006-05-27 19:21:47 +0000503 if sys.platform == 'darwin':
504 kernel_version = os.uname()[2] # Kernel version (8.4.3)
505 major_version = int(kernel_version.split('.')[0])
506
507 if major_version < 8:
508 # On Mac OS X before 10.4, check if -arch and -isysroot
509 # are in CFLAGS or LDFLAGS and remove them if they are.
510 # This is needed when building extensions on a 10.3 system
511 # using a universal build of python.
Thomas Wouters89f507f2006-12-13 04:49:30 +0000512 for key in ('LDFLAGS', 'BASECFLAGS',
513 # a number of derived variables. These need to be
514 # patched up as well.
515 'CFLAGS', 'PY_CFLAGS', 'BLDSHARED'):
Thomas Wouters477c8d52006-05-27 19:21:47 +0000516 flags = _config_vars[key]
517 flags = re.sub('-arch\s+\w+\s', ' ', flags)
Thomas Wouters0e3f5912006-08-11 14:57:12 +0000518 flags = re.sub('-isysroot [^ \t]*', ' ', flags)
Thomas Wouters477c8d52006-05-27 19:21:47 +0000519 _config_vars[key] = flags
520
Greg Ward879f0f12000-09-15 01:15:08 +0000521 if args:
522 vals = []
523 for name in args:
524 vals.append(_config_vars.get(name))
525 return vals
526 else:
527 return _config_vars
528
529def get_config_var(name):
530 """Return the value of a single variable using the dictionary
531 returned by 'get_config_vars()'. Equivalent to
Fred Drakec916cdc2001-08-02 20:03:12 +0000532 get_config_vars().get(name)
Greg Ward879f0f12000-09-15 01:15:08 +0000533 """
534 return get_config_vars().get(name)