Date: Sun, 3 May 1998 16:06:26 +1000 (EST) From: John Birrell <jb@cimlogic.com.au> To: bde@zeta.org.au (Bruce Evans) Cc: jb@FreeBSD.ORG, current@FreeBSD.ORG Subject: Re: errno change breaks old shared library linkage Message-ID: <199805030606.QAA11651@cimlogic.com.au> In-Reply-To: <199805030531.PAA06287@godzilla.zeta.org.au> from Bruce Evans at "May 3, 98 03:31:21 pm"
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Bruce Evans wrote: > An interface change like errno -> (*__error()) requires bumping the > major numbers of all shared libraries that use the interface, although > it doesn't necessarily require bumping even the minor number of the > shared library that implements the interface. libtermcap was last > broken by the issetugid() changes. The errno change probably affects > more libraries and is harder to kludge around. You want me to bump _all_ major numbers that I can find?! The problem here is that shared libraries don't link against other shared libraries - only the program knows what shared libraries it is looking for. This means that it is always possible that an interface change will require a re-link of the programs. In this case, I don't think that's unreasonable since the example you gave was for lib major 2 and the interface change is in major 3. For a major OS release (from 2 -> 3) relinking third party programs is reasonable. We just need to make the libraries consistent. -- John Birrell - jb@cimlogic.com.au; jb@freebsd.org http://www.cimlogic.com.au/ CIMlogic Pty Ltd, GPO Box 117A, Melbourne Vic 3001, Australia +61 418 353 137 To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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