Date: Mon, 26 Oct 2015 12:12:18 -0700 From: Adrian Chadd <adrian.chadd@gmail.com> To: Konstantin Belousov <kostikbel@gmail.com> Cc: Hans Petter Selasky <hps@selasky.org>, freebsd-current <freebsd-current@freebsd.org> Subject: Re: Quick test building a module cross all targets and architectures Message-ID: <CAJ-Vmo=bQE4GBhpkrwSZc_OwbXSgGFMB_1%2Bat5vF18mLvAXJbg@mail.gmail.com> In-Reply-To: <20151026182348.GT2257@kib.kiev.ua> References: <562DEE4F.5010203@selasky.org> <5888922.UHSgpdyTWY@ralph.baldwin.cx> <20151026182348.GT2257@kib.kiev.ua>
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On 26 October 2015 at 11:23, Konstantin Belousov <kostikbel@gmail.com> wrote: > On Mon, Oct 26, 2015 at 11:03:07AM -0700, John Baldwin wrote: >> On Monday, October 26, 2015 10:11:43 AM Hans Petter Selasky wrote: >> > Hi, >> > >> > We have NO_MODULES for building kernel without modules, but no NO_KERNEL >> > to only build the modules. >> > >> > What do you think about the following patch: >> > >> > > diff --git a/sys/conf/kern.post.mk b/sys/conf/kern.post.mk >> > > index ddf828e..f0920df 100644 >> > > --- a/sys/conf/kern.post.mk >> > > +++ b/sys/conf/kern.post.mk >> > > @@ -32,7 +32,11 @@ KERN_DEBUGDIR?= ${DEBUGDIR} >> > > >> > > .for target in all clean cleandepend cleandir clobber depend install \ >> > > obj reinstall tags >> > > +.if !defined(NO_KERNEL) >> > > ${target}: kernel-${target} >> > > +.else >> > > +${target}: >> > > +.endif >> > > .if !defined(MODULES_WITH_WORLD) && !defined(NO_MODULES) && exists($S/modules) >> > > ${target}: modules-${target} >> > > modules-${target}: >> > >> > It allows only a single module with MODULES_OVERRIDE= and NO_KERNEL=YES >> > to be built with universe in very little time. This can save a lot of >> > build time when changes are limited to a set of kernel modules. >> >> Can you just use something like MODULES_WITH_WORLD instead? >> >> make tinderbox MAKE_JUST_WORLDS=yes SUBDIR_OVERRIDE=sys/modules MODULES_OVERRIDE=foo >> >> (If it's only 1 module directory you can probably just use SUBDIR_OVERRIDE directly?) >> >> make tinderbox MAKE_JUST_WORLDS=yes SUBDIR_OVERRIDE=sys/modules/foo >> > > In any variant, this proposal sounds strange. Almost all in-kernel > code is compiled both for kernel and for modules. I am only aware of > exceptions for i915kms, which was done for a reason which is no longer > valid. In other words, if your goal is to check that the change does not > break compilation of some kernel code, then it is wrong to not compile > kernels. > > Note that kernel and modules compilation environments are differrent. No, the goal isn't that - it's to do things like "let's recompile usb + usb modules, unload, load to test." It's not a substitute for the "test a full build"; it's for testing things that are easily tested as modules - usb, wlan, etc. -a
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