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Re: linking libgit.a in C++ projects

From
Petr Baudis <pasky@suse.cz>
Date
Jul 31, 2008, 11:14 UTC
Message-ID
<20080731111446.GO32184@machine.or.cz>
In-Reply-To
<20080731105727.GF7008@dpotapov.dyndns.org>
On Thu, Jul 31, 2008 at 02:57:27PM +0400, Dmitry Potapov wrote:
Show 7 quoted lines
> On Thu, Jul 31, 2008 at 02:53:37AM -0700, cte wrote:
> > I'm writing a git gui for OS X using cocoa/Objective-C++, and rather
> > than being lame and parsing the output the various git commands, I'm
> > using libgit.a to provide all of the needed functionality for my app.
> 
> Don't do that! libgit.a is an internal library used solely to build
> git binaries. It means that its interface can be cahnged at any time.

I don't think this is that big a problem; there are applications that are doing this already, e.g. cgit, and if you tie your application to a particular git version by for example making git a submodule of your source, this is pretty safe; it will just mean that you will have to do some non-trivial porting of your code to the new interface each time you update - but I think large changes in the interface are pretty rare in practice by now, and there shouldn't be much on the horizon either(?).

Show 6 quoted lines
> > However, the git source uses a few reserved C++ keywords; namely
> > 'typename', and 'new'.
> 
> Because this source code are meant to be compiled by C and not by C++!
> Even if we will have real git library for other applications to use,
> it still be compiled only by C. Thus, C++ keywords are not issue.

What would be the reason to disallow C++ users? The costs aren't that high, and (modulo, say, extern "C" { }) there should be no C-C++ compatibility issues, right?

-- 
				Petr "Pasky" Baudis
As in certain cults it is possible to kill a process if you know
its true name.  -- Ken Thompson and Dennis M. Ritchie
Previous: Dmitry PotapovNext: cte
Message 17 of 26 in “linking libgit.a in C++ projects”
  1. cteJul 31, 2008
  2. Dmitry PotapovJul 31, 2008
  3. cteJul 31, 2008
  4. Pedro MeloJul 31, 2008
  5. Petr BaudisJul 31, 2008
  6. cteJul 31, 2008
  7. Sverre RabbelierJul 31, 2008
  8. cteJul 31, 2008
  9. Sverre RabbelierJul 31, 2008
  10. Shawn O. PearceJul 31, 2008
  11. Sverre RabbelierJul 31, 2008
  12. Steve FrécinauxAug 4, 2008
  13. cteAug 1, 2008
  14. Linus TorvaldsAug 1, 2008
  15. cteAug 1, 2008
  16. Dmitry PotapovJul 31, 2008
  17. Petr BaudisJul 31, 2008
  18. cteJul 31, 2008
  19. Dmitry PotapovJul 31, 2008
  20. Boaz HarroshJul 31, 2008
  21. Dmitry PotapovJul 31, 2008
  22. Alex RiesenJul 31, 2008
  23. Avery PennarunJul 31, 2008
  24. Alex RiesenAug 3, 2008
  25. Boaz HarroshAug 4, 2008
  26. cteJul 31, 2008

Read the whole thread, see it on lore, or plain text.

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