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Zimmerman: Weve packaged all of the free software what now?Zimmerman: Weve packaged all of the free software what now?Posted Jul 7, 2010 14:02 UTC (Wed) by vonbrand (subscriber, #4458)In reply to: Zimmerman: Weve packaged all of the free software what now? by nlucas Parent article: Zimmerman: Weve packaged all of the free software what now?
The problem isn't "get latest <foo> out to users", the problem is making sure the whole system works reasonably well. Having a few thousand packages installed, each available in a few dozen versions, is just impossible to check for minimal sanity. BTW, apropos the so touted Windows compatibility, you will run regularly into programs that plainly don't work on the latest version of the operating system (ever wondered why many people have been reluctant to follow the "service pack" threadmill?). Yes, this has happened to me with a Microsft game for Win98, for which all requirements were fullfilled on WinNT. The only thing that worked was the splash startup, after that it just crased badly. And that even in the face of heroic efforts by Microsoft people to make sure that "important legacy applications" still work, even if they rely on undocumented behaviour, plain bugs, or even outright security failures. "Not so important legacy applications" (like some my daughter uses frequently) just don't work at all on anything except their native WinXP right now.
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Zimmerman: Weve packaged all of the free software what now? Posted Jul 7, 2010 15:20 UTC (Wed) by nlucas (subscriber, #33793) [Link]
It's very hard, but not impossible.
Don't forget there are many times more incompetent developers on Windows than all Linux developers combined.
If a developer actually follows the Microsoft guidelines on how to write a windows program, then it will work from Windows 2000 to Windows 7. But it's hard, not an easy task to do (although not as difficult as writing a complex Linux application that will work on every system).
Microsoft doesn't maintain bug and undocumented behavior compatibility for everything, just when a big enterprise pays them or some very famous application rely on it. It's not in their interest to do so, so don't expect they will do it for free.
One example are the anti-virus software programs that stopped working because most of the time rely on undocumented APIs. Microsoft finally decided security was more important than compatibility and drop the ball on them.
Any way, I only sporadically do any Windows development nowadays, so don't care much anymore. I just don't like reading myths, even if they are related to a common "enemy".
Zimmerman: Weve packaged all of the free software what now? Posted Jul 7, 2010 19:43 UTC (Wed) by vonbrand (subscriber, #4458) [Link] Yes, the proportion of incompetent developers is roughly constant across systems. In any case, MSFT advertised a program written by them to work as long as certain requirements were met, and they were met by WinNT. It just didn't work, period. No, MSFT didn't "decide security was more important", they just pulled the rug out from under antivirus vendors when they decided to (try to) take over that segment. "Writing a complex application that works on every Linux system" is reasonably easy (much easier than it was to write anything to run on a reasonable range of Unix systems back when), as long as you ship source. If you try to ship binaries, you are out of luck.
Zimmerman: Weve packaged all of the free software what now? Posted Jul 7, 2010 21:31 UTC (Wed) by michaeljt (subscriber, #39183) [Link]
> "Writing a complex application that works on every Linux system" is reasonably easy (much easier than it was to write anything to run on a reasonable range of Unix systems back when), as long as you ship source. If you try to ship binaries, you are out of luck.
From my personal experience, even shipping binaries of complex applications is easier than people believe. As long as you are willing to build them for all the architectures you want to support (most likely the two x86 ones).
Zimmerman: Weve packaged all of the free software what now? Posted Jul 8, 2010 11:13 UTC (Thu) by nlucas (subscriber, #33793) [Link]
Well, one thing I agree. Shipping binaries it's the easy part.
Zimmerman: Weve packaged all of the free software what now? Posted Jul 8, 2010 11:23 UTC (Thu) by michaeljt (subscriber, #39183) [Link]
> Well, one thing I agree. Shipping binaries it's the easy part.
When I said "shipping", I included building and solving binary compatiblilty issues in that. It really isn't too hard - build on the oldest system you want to support, decide what dependencies you can rely on the system to provide and ship the rest static, load a couple of things at runtime if in doubt. There are still a couple of gotchas (the autopackage web page has good information on the subject, although C++ ABIs are no longer a problem, and glibc is getting better at not pulling in new features unless you actually use them), but it is still quite feasible. And once you have solved the problems, they stay solved on the whole.
Zimmerman: Weve packaged all of the free software what now? Posted Jul 8, 2010 11:31 UTC (Thu) by nlucas (subscriber, #33793) [Link]
Right. That's exactly what I was agreeing to.
And the current C++ ABI stability plays a big part in that, contrary to the hell it was earlier (and worst on Windows because there were more than one mainstream compiler).
Zimmerman: Weve packaged all of the free software what now? Posted Jul 8, 2010 11:35 UTC (Thu) by michaeljt (subscriber, #39183) [Link]
> And the current C++ ABI stability plays a big part in that, contrary to the hell it was earlier (and worst on Windows because there were more than one mainstream compiler).
I thought that Windows people used COM for ABI because it is well defined.
Zimmerman: Weve packaged all of the free software what now? Posted Jul 8, 2010 15:25 UTC (Thu) by nlucas (subscriber, #33793) [Link]
COM has nothing to do with C++ objects, although there are Microsoft C++ extensions to the language to make it easy to work with it inside C++.
You can use COM in a pure C program.
Zimmerman: Weve packaged all of the free software what now? Posted Jul 8, 2010 15:18 UTC (Thu) by foom (subscriber, #14868) [Link]
> although C++ ABIs are no longer a problem
Hm. Unfortunately, I think they will be again at some point soon. It sounds like when G++'s C++0x support is finalized, they're going to have to change the ABI of std::string and maybe a few other core classes. (okay, so, that's not a C++ ABI break, only an STL ABI change).
Zimmerman: Weve packaged all of the free software what now? Posted Jul 12, 2010 13:25 UTC (Mon) by HelloWorld (guest, #56129) [Link]
Do you have any reliable sources that state this?
Zimmerman: Weve packaged all of the free software what now? Posted Jul 15, 2010 14:51 UTC (Thu) by nix (subscriber, #2304) [Link]
There have been discussions to this effect on the GCC mailing list. It's not unsubstantiated scuttlebutt. (Perhaps a way will yet be found to avoid a std::string ABI change, but none is yet evident.)
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