Date: Thu, 14 Aug 2003 13:58:16 -0400 (EDT) From: John Baldwin <jhb@FreeBSD.org> To: Andrew Gallatin <gallatin@cs.duke.edu> Cc: current@freebsd.org Subject: RE: Change to kernel+modules build approach Message-ID: <XFMail.20030814135816.jhb@FreeBSD.org> In-Reply-To: <16187.44785.91962.402945@grasshopper.cs.duke.edu>
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On 14-Aug-2003 Andrew Gallatin wrote: > > John Baldwin writes: > > > > On 14-Aug-2003 Ruslan Ermilov wrote: > > > On Thu, Aug 14, 2003 at 02:10:19AM -0600, Scott Long wrote: > > >> Luoqi Chen wrote: > > > [...] > > >> >On the other hand, all modules should create all the opt_*.h files > > >> >it needs when built individually. Add opt_ddb.h to nullfs's Makefile > > >> >should fix the breakage. > > >> > > > >> Our kernel build system isn't set up to handle passing config options > > >> to modules. Various solutions to this have been proposed, but nothing > > >> has appeared yet. In 5.x, we document that modules will not work with > > >> PAE. > > >> > > > How does the below look? This is basically a more generic implementation > > > of Luoqi's idea, but for -CURRENT: > > > > I would prefer something far more radical that would involve moving > > all the module metadata to sys/conf (i.e. removing sys/modules) and > > building all the modules based on a single kernel config file. > > Would this tie modules to that kernel config? If so, would it mean > the end of the ability of 3rd party developers to ship binary drivers > and expect them to work with any kernel? Well, yes, but, one could always build generic modules by using a kernel config containing 'options KLD_MODULE' or some such. This would allow one to compile optimized modules if they wanted to, but still provide the ability to build fully generic modules. -- John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/
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