The previous implementation used execv(2) to run the real interpreter, which means that
you cannot use the arch(1) tool to select the architecture you want to use for a
universal build because that only affects the python/pythonw wrapper and not the actual
interpreter.
The new version uses posix_spawnv with a number of OSX-specific options that ensure that
the real interpreter is started using the same CPU architecture as the wrapper, and that
means that 'arch -ppc python' now actually works.
I've also changed the way that the wrapper looks for the framework: it is now linked to
the framework rather than hardcoding the framework path. This should make it easier to
provide pythonw support in tools like virtualenv.
Add the Python/dtoa.c file containing the main algorithms;
add corresponding include file and include in Python.h;
include license information for Python/dtoa.c;
add dtoa.c and dtoa.h to Makefile.
of Python (on OSX), and the end result of that is that the combination of
``python-config --ldflags`` and ``python-config --libs`` refers to an actually
existing location.
I've done this in preference to changing python-config to specify
'-framework Python' for linking because that doesn't work when you have multiple
versions of python installed (because '-framework Python' will always link to
the 'Current' version of the framework, without a possibility to specify a
specific version).
clashes with what Python's build target did. Rename the target to 'patchcheck'
to avoid the culture clash.
Closes issue 3758.
Reviewed by Benjamin Peterson.
This patch adds a new configure argument on OSX:
--with-universal-archs=[32-bit|64-bit|all]
When used with the --enable-universalsdk option this controls which
CPU architectures are includes in the framework. The default is 32-bit,
meaning i386 and ppc. The most useful alternative is 'all', which includes
all 4 CPU architectures supported by MacOS X (i386, ppc, x86_64 and ppc64).
This includes limited support for the Carbon bindings in 64-bit mode as well,
limited because (a) I haven't done extensive testing and (b) a large portion
of the Carbon API's aren't available in 64-bit mode anyway.
I've also duplicated a feature of Apple's build of python: setting the
environment variable 'ARCHFLAGS' controls the '-arch' flags used for building
extensions using distutils.
Benjamin Peterson
Ronald Oussoren
Georg Brandl
Mark Dickinson
Antoine Pitrou
Tarek Ziadé
Eric Smith
Thomas Heller
Jeremy Hylton
Matthias Klose
Brett Cannon
Martin v. Löwis
Gregory P. Smith
Christian Heimes
Neal Norwitz