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- """Provide access to Python's configuration information. The specific names
- defined in the module depend heavily on the platform and configuration.
-
- Written by: Fred L. Drake, Jr.
- Email: <fdrake@acm.org>
- Initial date: 17-Dec-1998
- """
-
- __revision__ = "$Id: sysconfig.py,v 1.24 2000/08/02 01:49:40 gward Exp $"
-
- import os
- import re
- import string
- import sys
-
- from errors import DistutilsPlatformError
-
-
- PREFIX = os.path.normpath(sys.prefix)
- EXEC_PREFIX = os.path.normpath(sys.exec_prefix)
-
-
- def get_python_inc(plat_specific=0, prefix=None):
- """Return the directory containing installed Python header files.
-
- If 'plat_specific' is false (the default), this is the path to the
- non-platform-specific header files, i.e. Python.h and so on;
- otherwise, this is the path to platform-specific header files
- (namely config.h).
-
- If 'prefix' is supplied, use it instead of sys.prefix or
- sys.exec_prefix -- i.e., ignore 'plat_specific'.
- """
- if prefix is None:
- prefix = (plat_specific and EXEC_PREFIX or PREFIX)
- if os.name == "posix":
- return os.path.join(prefix, "include", "python" + sys.version[:3])
- elif os.name == "nt":
- return os.path.join(prefix, "Include") # include or Include?
- elif os.name == "mac":
- return os.path.join(prefix, "Include")
- else:
- raise DistutilsPlatformError, \
- ("I don't know where Python installs its C header files " +
- "on platform '%s'") % os.name
-
-
- def get_python_lib(plat_specific=0, standard_lib=0, prefix=None):
- """Return the directory containing the Python library (standard or
- site additions).
-
- If 'plat_specific' is true, return the directory containing
- platform-specific modules, i.e. any module from a non-pure-Python
- module distribution; otherwise, return the platform-shared library
- directory. If 'standard_lib' is true, return the directory
- containing standard Python library modules; otherwise, return the
- directory for site-specific modules.
-
- If 'prefix' is supplied, use it instead of sys.prefix or
- sys.exec_prefix -- i.e., ignore 'plat_specific'.
- """
- if prefix is None:
- prefix = (plat_specific and EXEC_PREFIX or PREFIX)
-
- if os.name == "posix":
- libpython = os.path.join(prefix,
- "lib", "python" + sys.version[:3])
- if standard_lib:
- return libpython
- else:
- return os.path.join(libpython, "site-packages")
-
- elif os.name == "nt":
- if standard_lib:
- return os.path.join(PREFIX, "Lib")
- else:
- return prefix
-
- elif os.name == "mac":
- if plat_specific:
- if standard_lib:
- return os.path.join(EXEC_PREFIX, "Mac", "Plugins")
- else:
- raise DistutilsPlatformError, \
- "OK, where DO site-specific extensions go on the Mac?"
- else:
- if standard_lib:
- return os.path.join(PREFIX, "Lib")
- else:
- raise DistutilsPlatformError, \
- "OK, where DO site-specific modules go on the Mac?"
- else:
- raise DistutilsPlatformError, \
- ("I don't know where Python installs its library " +
- "on platform '%s'") % os.name
-
- # get_python_lib()
-
-
- def customize_compiler (compiler):
- """Do any platform-specific customization of the CCompiler instance
- 'compiler'. Mainly needed on Unix, so we can plug in the information
- that varies across Unices and is stored in Python's Makefile.
- """
- if compiler.compiler_type == "unix":
- cc_cmd = CC + ' ' + OPT
- compiler.set_executables(
- preprocessor=CC + " -E", # not always!
- compiler=cc_cmd,
- compiler_so=cc_cmd + ' ' + CCSHARED,
- linker_so=LDSHARED,
- linker_exe=CC)
-
- compiler.shared_lib_extension = SO
-
-
- def get_config_h_filename():
- """Return full pathname of installed config.h file."""
- inc_dir = get_python_inc(plat_specific=1)
- return os.path.join(inc_dir, "config.h")
-
-
- def get_makefile_filename():
- """Return full pathname of installed Makefile from the Python build."""
- lib_dir = get_python_lib(plat_specific=1, standard_lib=1)
- return os.path.join(lib_dir, "config", "Makefile")
-
-
- def parse_config_h(fp, g=None):
- """Parse a config.h-style file.
-
- A dictionary containing name/value pairs is returned. If an
- optional dictionary is passed in as the second argument, it is
- used instead of a new dictionary.
- """
- if g is None:
- g = {}
- define_rx = re.compile("#define ([A-Z][A-Z0-9_]+) (.*)\n")
- undef_rx = re.compile("/[*] #undef ([A-Z][A-Z0-9_]+) [*]/\n")
- #
- while 1:
- line = fp.readline()
- if not line:
- break
- m = define_rx.match(line)
- if m:
- n, v = m.group(1, 2)
- try: v = string.atoi(v)
- except ValueError: pass
- g[n] = v
- else:
- m = undef_rx.match(line)
- if m:
- g[m.group(1)] = 0
- return g
-
- def parse_makefile(fp, g=None):
- """Parse a Makefile-style file.
-
- A dictionary containing name/value pairs is returned. If an
- optional dictionary is passed in as the second argument, it is
- used instead of a new dictionary.
-
- """
- if g is None:
- g = {}
- variable_rx = re.compile("([a-zA-Z][a-zA-Z0-9_]+)\s*=\s*(.*)\n")
- done = {}
- notdone = {}
- #
- while 1:
- line = fp.readline()
- if not line:
- break
- m = variable_rx.match(line)
- if m:
- n, v = m.group(1, 2)
- v = string.strip(v)
- if "$" in v:
- notdone[n] = v
- else:
- try: v = string.atoi(v)
- except ValueError: pass
- done[n] = v
-
- # do variable interpolation here
- findvar1_rx = re.compile(r"\$\(([A-Za-z][A-Za-z0-9_]*)\)")
- findvar2_rx = re.compile(r"\${([A-Za-z][A-Za-z0-9_]*)}")
- while notdone:
- for name in notdone.keys():
- value = notdone[name]
- m = findvar1_rx.search(value)
- if not m:
- m = findvar2_rx.search(value)
- if m:
- n = m.group(1)
- if done.has_key(n):
- after = value[m.end():]
- value = value[:m.start()] + done[n] + after
- if "$" in after:
- notdone[name] = value
- else:
- try: value = string.atoi(value)
- except ValueError: pass
- done[name] = string.strip(value)
- del notdone[name]
- elif notdone.has_key(n):
- # get it on a subsequent round
- pass
- else:
- done[n] = ""
- after = value[m.end():]
- value = value[:m.start()] + after
- if "$" in after:
- notdone[name] = value
- else:
- try: value = string.atoi(value)
- except ValueError: pass
- done[name] = string.strip(value)
- del notdone[name]
- else:
- # bogus variable reference; just drop it since we can't deal
- del notdone[name]
-
- # save the results in the global dictionary
- g.update(done)
- return g
-
-
- def _init_posix():
- """Initialize the module as appropriate for POSIX systems."""
- g = globals()
- # load the installed Makefile:
- try:
- filename = get_makefile_filename()
- file = open(filename)
- except IOError, msg:
- my_msg = "invalid Python installation: unable to open %s" % filename
- if hasattr(msg, "strerror"):
- my_msg = my_msg + " (%s)" % msg.strerror
-
- raise DistutilsPlatformError, my_msg
-
- parse_makefile(file, g)
-
- # On AIX, there are wrong paths to the linker scripts in the Makefile
- # -- these paths are relative to the Python source, but when installed
- # the scripts are in another directory.
- if sys.platform == 'aix4': # what about AIX 3.x ?
- # Linker script is in the config directory, not in Modules as the
- # Makefile says.
- python_lib = get_python_lib(standard_lib=1)
- ld_so_aix = os.path.join(python_lib, 'config', 'ld_so_aix')
- python_exp = os.path.join(python_lib, 'config', 'python.exp')
-
- g['LDSHARED'] = "%s %s -bI:%s" % (ld_so_aix, g['CC'], python_exp)
-
-
- def _init_nt():
- """Initialize the module as appropriate for NT"""
- g = globals()
- # set basic install directories
- g['LIBDEST'] = get_python_lib(plat_specific=0, standard_lib=1)
- g['BINLIBDEST'] = get_python_lib(plat_specific=1, standard_lib=1)
-
- # XXX hmmm.. a normal install puts include files here
- g['INCLUDEPY'] = get_python_inc(plat_specific=0)
-
- g['SO'] = '.pyd'
- g['EXE'] = ".exe"
- g['exec_prefix'] = EXEC_PREFIX
-
-
- def _init_mac():
- """Initialize the module as appropriate for Macintosh systems"""
- g = globals()
- # set basic install directories
- g['LIBDEST'] = get_python_lib(plat_specific=0, standard_lib=1)
- g['BINLIBDEST'] = get_python_lib(plat_specific=1, standard_lib=1)
-
- # XXX hmmm.. a normal install puts include files here
- g['INCLUDEPY'] = get_python_inc(plat_specific=0)
-
- g['SO'] = '.ppc.slb'
- g['exec_prefix'] = EXEC_PREFIX
- print sys.prefix, PREFIX
-
- # XXX are these used anywhere?
- g['install_lib'] = os.path.join(EXEC_PREFIX, "Lib")
- g['install_platlib'] = os.path.join(EXEC_PREFIX, "Mac", "Lib")
-
-
- try:
- exec "_init_" + os.name
- except NameError:
- # not needed for this platform
- pass
- else:
- exec "_init_%s()" % os.name
-
-
- del _init_posix
- del _init_nt
- del _init_mac
-