SF #1685563, MSVCCompiler creates redundant and long PATH strings
If MSVCCompiler.initialize() was called multiple times, the path
would get duplicated. On Windows, this is a problem because the
path is limited to 4k. There's no benefit in adding a path multiple
times, so prevent that from occuring. We also normalize the path
before checking for duplicates so things like /a and /a/ won't both
be stored.
Bug #1160802: Can't build Zope on Windows w/ 2.4.1c1.
MSVCCompiler.initialize(): set self.initialized to True, as suggested
by AMK. Else we keep growing the PATH endlessly, with each new C
extension built, until putenv() complains.
No change to NEWS because the patch that created this bug is also new
for 2.5a1 (so there's no change here to any code yet released from HEAD).
Use case: Sometimes 'compiling' source files (with SWIG, for example)
creates additionl files which included by later sources. The win32all
setup script requires this.
There is no SF item for this, but it was discussed on distutils-sig:
http://mail.python.org/pipermail/distutils-sig/2003-November/003514.html
distutils now looks for the compiler version in sys.version, falling
back to MSVC 6 if the version isn't listed (Python 2.2 and lower).
Add helper routines for reading the registry. Refactor many
module functions into methods of the compiler to avoid passing
lots of state as arguments.
[#413582] g++ must be called for c++ extensions
[#454030] distutils cannot link C++ code with GCC
topdir = "Lib/distutils"
* bcppcompiler.py
(BCPPCompiler.create_static_lib): Fixed prototype, removing extra_preargs
and extra_postargs parameters. Included target_lang parameter.
(BCPPCompiler.link): Included target_lang parameter.
* msvccompiler.py
(MSVCCompiler.create_static_lib): Fixed prototype, removing extra_preargs
and extra_postargs parameters. Included target_lang parameter.
(MSVCCompiler.link): Included target_lang parameter.
* ccompiler.py
(CCompiler): New language_map and language_order attributes, used by
CCompiler.detect_language().
(CCompiler.detect_language): New method, will return the language of
a given source, or list of sources. Individual source language is
detected using the language_map dict. When mixed sources are used,
language_order will stablish the language precedence.
(CCompiler.create_static_lib, CCompiler.link, CCompiler.link_executable,
CCompiler.link_shared_object, CCompiler.link_shared_lib):
Inlcuded target_lang parameter.
* cygwinccompiler.py
(CygwinCCompiler.link): Included target_lang parameter.
* emxccompiler.py
(EMXCCompiler.link): Included target_lang parameter.
* mwerkscompiler.py
(MWerksCompiler.link): Included target_lang parameter.
* extension.py
(Extension.__init__): New 'language' parameter/attribute, initialized
to None by default. If provided will overlap the automatic detection
made by CCompiler.detect_language(), in build_ext command.
* sysconfig.py
(customize_compiler): Check Makefile for CXX option, and also the
environment variable CXX. Use the resulting value in the 'compiler_cxx'
parameter of compiler.set_executables().
* unixccompiler.py
(UnixCCompiler): Included 'compiler_cxx' in executables dict, defaulting
to 'cc'.
(UnixCCompiler.create_static_lib): Included target_lang parameter.
(UnixCCompiler.link): Included target_lang parameter, and made
linker command use compiler_cxx, if target_lang is 'c++'.
* command/build_ext.py
(build_ext.build_extension): Pass new ext.language attribute
to compiler.link_shared_object()'s target_lang parameter. If
ext.language is not provided, detect language using
compiler.detect_language(sources) instead.
* command/config.py
(config._link): Pass already available lang parameter as target_lang
parameter of compiler.link_executable().
Always use _setup_compile() to do the grunt work of processing
arguments, figuring out which files to compile, and emitting debug
messages for files that are up-to-date.
Use _get_cc_args() when possible.
This is a conservative version of SF patch 504889. It uses the log
module instead of calling print in various places, and it ignores the
verbose argument passed to many functions and set as an attribute on
some objects. Instead, it uses the verbosity set on the logger via
the command line.
The log module is now preferred over announce() and warn() methods
that exist only for backwards compatibility.
XXX This checkin changes a lot of modules that have no test suite and
aren't exercised by the Python build process. It will need
substantial testing.
implementations. Details:
* replace 'link_shared_object()', 'link_shared_lib()', and
'link_executable()' with 'link()', which is (roughly)
the union of the three methods it replaces
* in all implementation classes (UnixCCompiler, MSVCCompiler, etc.),
ditch the old 'link_*()' methods and replace them with 'link()'
* in the abstract base class (CCompiler), add the old 'link_*()'
methods as wrappers around the new 'link()' (they also print
a warning of the deprecated interface)
Also increases consistency between MSVCCompiler and BCPPCompiler,
hopefully to make it easier to factor out the mythical WindowsCCompiler
class. Details:
* use 'self.linker' instead of 'self.link'
* add ability to compile resource files to BCPPCompiler
* added (redundant?) 'object_filename()' method to BCPPCompiler
* only generate a .def file if 'export_symbols' defined
resource files. The gist of the patch is to treat ".rc" and ".mc"
files as source files; ".mc" files are compiled to ".rc" and then
".res", and ".rc" files are compiled to ".res". Wish I knew what
all these things stood for...
according to the MS docs it enables exception-handling, and (according
to Alex Martelli <aleaxit@yahoo.com>) is needed to compile without
getting warnings from standard C++ library headers. Apparently
it doesn't cause any problems with C code, so I haven't bothered
conditionalizing the use of /GX.
This'll work fine with 2.0 or 1.5.2, but is less than ideal for
1.6a1/a2. But the code to accomodate 1.6a1/a2 was released with
Distutils 0.9, so it can go away now.
methods (but not 'link_executable()', hmmm). Currently only used by
BCPPCompiler; it's a dummy parameter for UnixCCompiler and MSVCCompiler.
Also added 'bcpp' to compiler table used by 'new_compiler()'.
Neal Norwitz
Martin v. Löwis
Trent Mick
Tim Peters
Brett Cannon
Fredrik Lundh
Thomas Heller
Jeremy Hylton
Marc-André Lemburg
Andrew M. Kuchling
Gustavo Niemeyer
Fred Drake
Greg Ward