ced9b1048c
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/branches/WX_2_4_BRANCH@19280 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
369 lines
13 KiB
Python
369 lines
13 KiB
Python
"""distutils.command.config
|
|
|
|
Implements the Distutils 'config' command, a (mostly) empty command class
|
|
that exists mainly to be sub-classed by specific module distributions and
|
|
applications. The idea is that while every "config" command is different,
|
|
at least they're all named the same, and users always see "config" in the
|
|
list of standard commands. Also, this is a good place to put common
|
|
configure-like tasks: "try to compile this C code", or "figure out where
|
|
this header file lives".
|
|
"""
|
|
|
|
# This module should be kept compatible with Python 1.5.2.
|
|
|
|
__revision__ = "$Id$"
|
|
|
|
import sys, os, string, re
|
|
from types import *
|
|
from distutils.core import Command
|
|
from distutils.errors import DistutilsExecError
|
|
from distutils.sysconfig import customize_compiler
|
|
from distutils import log
|
|
|
|
LANG_EXT = {'c': '.c',
|
|
'c++': '.cxx'}
|
|
|
|
class config (Command):
|
|
|
|
description = "prepare to build"
|
|
|
|
user_options = [
|
|
('compiler=', None,
|
|
"specify the compiler type"),
|
|
('cc=', None,
|
|
"specify the compiler executable"),
|
|
('include-dirs=', 'I',
|
|
"list of directories to search for header files"),
|
|
('define=', 'D',
|
|
"C preprocessor macros to define"),
|
|
('undef=', 'U',
|
|
"C preprocessor macros to undefine"),
|
|
('libraries=', 'l',
|
|
"external C libraries to link with"),
|
|
('library-dirs=', 'L',
|
|
"directories to search for external C libraries"),
|
|
|
|
('noisy', None,
|
|
"show every action (compile, link, run, ...) taken"),
|
|
('dump-source', None,
|
|
"dump generated source files before attempting to compile them"),
|
|
]
|
|
|
|
|
|
# The three standard command methods: since the "config" command
|
|
# does nothing by default, these are empty.
|
|
|
|
def initialize_options (self):
|
|
self.compiler = None
|
|
self.cc = None
|
|
self.include_dirs = None
|
|
#self.define = None
|
|
#self.undef = None
|
|
self.libraries = None
|
|
self.library_dirs = None
|
|
|
|
# maximal output for now
|
|
self.noisy = 1
|
|
self.dump_source = 1
|
|
|
|
# list of temporary files generated along-the-way that we have
|
|
# to clean at some point
|
|
self.temp_files = []
|
|
|
|
def finalize_options (self):
|
|
if self.include_dirs is None:
|
|
self.include_dirs = self.distribution.include_dirs or []
|
|
elif type(self.include_dirs) is StringType:
|
|
self.include_dirs = string.split(self.include_dirs, os.pathsep)
|
|
|
|
if self.libraries is None:
|
|
self.libraries = []
|
|
elif type(self.libraries) is StringType:
|
|
self.libraries = [self.libraries]
|
|
|
|
if self.library_dirs is None:
|
|
self.library_dirs = []
|
|
elif type(self.library_dirs) is StringType:
|
|
self.library_dirs = string.split(self.library_dirs, os.pathsep)
|
|
|
|
|
|
def run (self):
|
|
pass
|
|
|
|
|
|
# Utility methods for actual "config" commands. The interfaces are
|
|
# loosely based on Autoconf macros of similar names. Sub-classes
|
|
# may use these freely.
|
|
|
|
def _check_compiler (self):
|
|
"""Check that 'self.compiler' really is a CCompiler object;
|
|
if not, make it one.
|
|
"""
|
|
# We do this late, and only on-demand, because this is an expensive
|
|
# import.
|
|
from distutils.ccompiler import CCompiler, new_compiler
|
|
if not isinstance(self.compiler, CCompiler):
|
|
self.compiler = new_compiler(compiler=self.compiler,
|
|
dry_run=self.dry_run, force=1)
|
|
customize_compiler(self.compiler)
|
|
if self.include_dirs:
|
|
self.compiler.set_include_dirs(self.include_dirs)
|
|
if self.libraries:
|
|
self.compiler.set_libraries(self.libraries)
|
|
if self.library_dirs:
|
|
self.compiler.set_library_dirs(self.library_dirs)
|
|
|
|
|
|
def _gen_temp_sourcefile (self, body, headers, lang):
|
|
filename = "_configtest" + LANG_EXT[lang]
|
|
file = open(filename, "w")
|
|
if headers:
|
|
for header in headers:
|
|
file.write("#include <%s>\n" % header)
|
|
file.write("\n")
|
|
file.write(body)
|
|
if body[-1] != "\n":
|
|
file.write("\n")
|
|
file.close()
|
|
return filename
|
|
|
|
def _preprocess (self, body, headers, include_dirs, lang):
|
|
src = self._gen_temp_sourcefile(body, headers, lang)
|
|
out = "_configtest.i"
|
|
self.temp_files.extend([src, out])
|
|
self.compiler.preprocess(src, out, include_dirs=include_dirs)
|
|
return (src, out)
|
|
|
|
def _compile (self, body, headers, include_dirs, lang):
|
|
src = self._gen_temp_sourcefile(body, headers, lang)
|
|
if self.dump_source:
|
|
dump_file(src, "compiling '%s':" % src)
|
|
(obj,) = self.compiler.object_filenames([src])
|
|
self.temp_files.extend([src, obj])
|
|
self.compiler.compile([src], include_dirs=include_dirs)
|
|
return (src, obj)
|
|
|
|
def _link (self, body,
|
|
headers, include_dirs,
|
|
libraries, library_dirs, lang):
|
|
(src, obj) = self._compile(body, headers, include_dirs, lang)
|
|
prog = os.path.splitext(os.path.basename(src))[0]
|
|
self.compiler.link_executable([obj], prog,
|
|
libraries=libraries,
|
|
library_dirs=library_dirs,
|
|
target_lang=lang)
|
|
|
|
if self.compiler.exe_extension is not None:
|
|
prog = prog + self.compiler.exe_extension
|
|
self.temp_files.append(prog)
|
|
|
|
return (src, obj, prog)
|
|
|
|
def _clean (self, *filenames):
|
|
if not filenames:
|
|
filenames = self.temp_files
|
|
self.temp_files = []
|
|
log.info("removing: %s", string.join(filenames))
|
|
for filename in filenames:
|
|
try:
|
|
os.remove(filename)
|
|
except OSError:
|
|
pass
|
|
|
|
|
|
# XXX these ignore the dry-run flag: what to do, what to do? even if
|
|
# you want a dry-run build, you still need some sort of configuration
|
|
# info. My inclination is to make it up to the real config command to
|
|
# consult 'dry_run', and assume a default (minimal) configuration if
|
|
# true. The problem with trying to do it here is that you'd have to
|
|
# return either true or false from all the 'try' methods, neither of
|
|
# which is correct.
|
|
|
|
# XXX need access to the header search path and maybe default macros.
|
|
|
|
def try_cpp (self, body=None, headers=None, include_dirs=None, lang="c"):
|
|
"""Construct a source file from 'body' (a string containing lines
|
|
of C/C++ code) and 'headers' (a list of header files to include)
|
|
and run it through the preprocessor. Return true if the
|
|
preprocessor succeeded, false if there were any errors.
|
|
('body' probably isn't of much use, but what the heck.)
|
|
"""
|
|
from distutils.ccompiler import CompileError
|
|
self._check_compiler()
|
|
ok = 1
|
|
try:
|
|
self._preprocess(body, headers, include_dirs, lang)
|
|
except CompileError:
|
|
ok = 0
|
|
|
|
self._clean()
|
|
return ok
|
|
|
|
def search_cpp (self, pattern, body=None,
|
|
headers=None, include_dirs=None, lang="c"):
|
|
"""Construct a source file (just like 'try_cpp()'), run it through
|
|
the preprocessor, and return true if any line of the output matches
|
|
'pattern'. 'pattern' should either be a compiled regex object or a
|
|
string containing a regex. If both 'body' and 'headers' are None,
|
|
preprocesses an empty file -- which can be useful to determine the
|
|
symbols the preprocessor and compiler set by default.
|
|
"""
|
|
|
|
self._check_compiler()
|
|
(src, out) = self._preprocess(body, headers, include_dirs, lang)
|
|
|
|
if type(pattern) is StringType:
|
|
pattern = re.compile(pattern)
|
|
|
|
file = open(out)
|
|
match = 0
|
|
while 1:
|
|
line = file.readline()
|
|
if line == '':
|
|
break
|
|
if pattern.search(line):
|
|
match = 1
|
|
break
|
|
|
|
file.close()
|
|
self._clean()
|
|
return match
|
|
|
|
def try_compile (self, body, headers=None, include_dirs=None, lang="c"):
|
|
"""Try to compile a source file built from 'body' and 'headers'.
|
|
Return true on success, false otherwise.
|
|
"""
|
|
from distutils.ccompiler import CompileError
|
|
self._check_compiler()
|
|
try:
|
|
self._compile(body, headers, include_dirs, lang)
|
|
ok = 1
|
|
except CompileError:
|
|
ok = 0
|
|
|
|
log.info(ok and "success!" or "failure.")
|
|
self._clean()
|
|
return ok
|
|
|
|
def try_link (self, body,
|
|
headers=None, include_dirs=None,
|
|
libraries=None, library_dirs=None,
|
|
lang="c"):
|
|
"""Try to compile and link a source file, built from 'body' and
|
|
'headers', to executable form. Return true on success, false
|
|
otherwise.
|
|
"""
|
|
from distutils.ccompiler import CompileError, LinkError
|
|
self._check_compiler()
|
|
try:
|
|
self._link(body, headers, include_dirs,
|
|
libraries, library_dirs, lang)
|
|
ok = 1
|
|
except (CompileError, LinkError):
|
|
ok = 0
|
|
|
|
log.info(ok and "success!" or "failure.")
|
|
self._clean()
|
|
return ok
|
|
|
|
def try_run (self, body,
|
|
headers=None, include_dirs=None,
|
|
libraries=None, library_dirs=None,
|
|
lang="c"):
|
|
"""Try to compile, link to an executable, and run a program
|
|
built from 'body' and 'headers'. Return true on success, false
|
|
otherwise.
|
|
"""
|
|
from distutils.ccompiler import CompileError, LinkError
|
|
self._check_compiler()
|
|
try:
|
|
src, obj, exe = self._link(body, headers, include_dirs,
|
|
libraries, library_dirs, lang)
|
|
self.spawn([exe])
|
|
ok = 1
|
|
except (CompileError, LinkError, DistutilsExecError):
|
|
ok = 0
|
|
|
|
log.info(ok and "success!" or "failure.")
|
|
self._clean()
|
|
return ok
|
|
|
|
|
|
# -- High-level methods --------------------------------------------
|
|
# (these are the ones that are actually likely to be useful
|
|
# when implementing a real-world config command!)
|
|
|
|
def check_func (self, func,
|
|
headers=None, include_dirs=None,
|
|
libraries=None, library_dirs=None,
|
|
decl=0, call=0):
|
|
|
|
"""Determine if function 'func' is available by constructing a
|
|
source file that refers to 'func', and compiles and links it.
|
|
If everything succeeds, returns true; otherwise returns false.
|
|
|
|
The constructed source file starts out by including the header
|
|
files listed in 'headers'. If 'decl' is true, it then declares
|
|
'func' (as "int func()"); you probably shouldn't supply 'headers'
|
|
and set 'decl' true in the same call, or you might get errors about
|
|
a conflicting declarations for 'func'. Finally, the constructed
|
|
'main()' function either references 'func' or (if 'call' is true)
|
|
calls it. 'libraries' and 'library_dirs' are used when
|
|
linking.
|
|
"""
|
|
|
|
self._check_compiler()
|
|
body = []
|
|
if decl:
|
|
body.append("int %s ();" % func)
|
|
body.append("int main () {")
|
|
if call:
|
|
body.append(" %s();" % func)
|
|
else:
|
|
body.append(" %s;" % func)
|
|
body.append("}")
|
|
body = string.join(body, "\n") + "\n"
|
|
|
|
return self.try_link(body, headers, include_dirs,
|
|
libraries, library_dirs)
|
|
|
|
# check_func ()
|
|
|
|
def check_lib (self, library, library_dirs=None,
|
|
headers=None, include_dirs=None, other_libraries=[]):
|
|
"""Determine if 'library' is available to be linked against,
|
|
without actually checking that any particular symbols are provided
|
|
by it. 'headers' will be used in constructing the source file to
|
|
be compiled, but the only effect of this is to check if all the
|
|
header files listed are available. Any libraries listed in
|
|
'other_libraries' will be included in the link, in case 'library'
|
|
has symbols that depend on other libraries.
|
|
"""
|
|
self._check_compiler()
|
|
return self.try_link("int main (void) { }",
|
|
headers, include_dirs,
|
|
[library]+other_libraries, library_dirs)
|
|
|
|
def check_header (self, header, include_dirs=None,
|
|
library_dirs=None, lang="c"):
|
|
"""Determine if the system header file named by 'header_file'
|
|
exists and can be found by the preprocessor; return true if so,
|
|
false otherwise.
|
|
"""
|
|
return self.try_cpp(body="/* No body */", headers=[header],
|
|
include_dirs=include_dirs)
|
|
|
|
|
|
# class config
|
|
|
|
|
|
def dump_file (filename, head=None):
|
|
if head is None:
|
|
print filename + ":"
|
|
else:
|
|
print head
|
|
|
|
file = open(filename)
|
|
sys.stdout.write(file.read())
|
|
file.close()
|