Date: Wed, 28 Nov 2007 16:54:05 -0500 (EST) From: Daniel Eischen <deischen@freebsd.org> To: Robert Watson <rwatson@freebsd.org> Cc: Brooks Davis <brooks@freebsd.org>, freebsd-arch@freebsd.org Subject: Re: RFC: libkse*.a in 7.0 Message-ID: <Pine.GSO.4.64.0711281651360.24547@sea.ntplx.net> In-Reply-To: <20071128213947.Q7555@fledge.watson.org> References: <20071128211022.GA74762@lor.one-eyed-alien.net> <20071128213947.Q7555@fledge.watson.org>
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On Wed, 28 Nov 2007, Robert Watson wrote: > > On Wed, 28 Nov 2007, Brooks Davis wrote: > >> A number of people have proposed a direction in 8.0 that would remove >> support for the syscalls and kernel data structures required by libkse. >> Apparently this would enable significant simplification of portions of the >> kernel, but I have no deeply held personal opinion. The intent is that if >> that happens, alternate versions of the necessicary dynamic libraries will >> be supplied in updated compat#x packages. This will address most >> consumers. The one set of consumers that would not be addressed is those >> who have statically linked, threaded binaries using libkse. > > It's worth noting that some other mainstream operating systems work hard to > disallow static linking for precisely this sort of reason -- when I last > checked, Mac OS X had only one statically linked binary, init, and it may > well be that launchd is dynamically linked. This is part of a very explicit > policy that the defined ABI for applications is *not* the system call layer, > but rather, the library interfaces, which gives greater flexibility to modify > the system call interface as needed. I argued for removing libc.a as well as lib<thread>.a a couple of years ago and was met with opposition, mostly because statically linked applications are faster. I think we should remove libthr.a, libkse.a and libc.a, so flame on! -- DE
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