On 12 November 2014 19:52, Ned Deily <n...@acm.org> wrote: > In article > <CACgdh2igu5JEeHEO4EVA6=TiqqvosX1z_CuQ=Ti5Axbf=lc...@mail.gmail.com>, > Paul Wiseman <poal...@gmail.com> wrote: >> I'm currently using the installer with py2app to make a distributable >> app that targets 10.5+ (including ppc). To save having more than one >> build I use this for all downloads. Although I'm starting to consider >> making a second 32/64 distributable. Are there many major drawbacks >> for distributing this i386/ppc binary for all versions of OSX up 10.9 >> and 10.10? > > For a standalone app, not really. The main difference is that, by using > the older 10.5 ABI, a few functions in the os module are not available > (if they were implemented first in OS X 10.6 or later) and/or they may > work a little differently. AFAIK, the most impactful difference, by > far, is the OpenSSL version difference you have run into. Up to now, I > don't recall any compatibility problems with 10.5 ABI programs running > on later versions of OS X or, for the most part, mixing extension > modules compiled to later ABIs with a 10.5 Python, although there might > be issues with mixing versions of C++ modules (Python and its standard > library do not use C++ themselves). But, of course, there's no > guarantee that something won't break in a future release of OS X. So > far, so good. >
Yea, I'm a bit worried that apple will break it on a future release- I think I will start looking into making a second build. I wonder what are the chances they'll make a 64bit only OSX one day? >> That's great news! Thanks for this! I've always found building things >> on mac a huge pain and wasn't much looking forward to the prospect of >> trying to build a 32/ppc python build on a 64 bit 10.10 machine (would >> that even be possible?). > > It's possible: I do it. But I cheat a bit: I have 10.5 running in a > virtual machine on a 10.10 host. In theory, it's possible to build > natively on 10.10. The trick is getting a version of Xcode 3 installed > on 10.10 since support for building ppc archs was removed in Xcode 4. I > also cheat a bit there: I happen to still have copies of Xcode 3.1.4 and > 3.2.6 installed on 10.10 because I made sure to preserve them through > upgrades from 10.6 days. IIRC, directly installing the necessary > components from 3.2.6 on newer systems would require some hacking. Then > you have to be really vigilant that the build never strays from the old > SDK and tools, which is not something we claim to support at the moment. > The VM approach is quite safe and reliable. > I never thought about a VM for this for some reason- I have a few as well for basic testing on older OSX versions. I remember having to re-enable ppc in later versions of Xcode (http://stackoverflow.com/q/5333490/659346) when I was building some extensions for the app. That was a bit of a pain. Thanks for your help though! look forward to the 2.7.9 release :) > -- > Ned Deily, > n...@acm.org > > -- > https://mail.python.org/mailman/listinfo/python-list -- https://mail.python.org/mailman/listinfo/python-list
