On Tue, 2007-10-23 at 10:45 -0500, Jerone Young wrote:
> On Tue, 2007-10-23 at 10:21 -0500, Hollis Blanchard wrote:
> > > diff --git a/user/config-x86-common.mak b/user/config-x86-common.mak
> > > new file mode 100644
> > > --- /dev/null
> > > +++ b/user/config-x86-common.mak
> > > @@ -0,0 +1,16 @@
> > > +#This is a make file with common rules for both x86 & x86-64
> > > +
> > > +all: kvmctl libkvm.a flatfiles
> > > +
> > > +kvmctl: LDFLAGS += -pthread -lrt
> > > +
> > > +kvmctl: kvmctl.o main.o
> > > +
> > > +libkvm.a: kvmctl.o
> > > + $(AR) rcs $@ $^
> > > +
> > > +balloon_ctl: balloon_ctl.o
> > > +
> > > +flatfiles-common = test/bootstrap test/vmexit.flat test/smp.flat
> > > +
> > > +flatfiles: $(flatfiles-common) $(flatfiles)
> > > diff --git a/user/config-x86_64.mak b/user/config-x86_64.mak
> > > --- a/user/config-x86_64.mak
> > > +++ b/user/config-x86_64.mak
> > > @@ -3,5 +3,9 @@ bits = 64
> > >  bits = 64
> > >  ldarch = elf64-x86-64
> > >  CFLAGS += -m64
> > > +CFLAGS += -D__x86_64__
> > > +CFLAGS += -I $(KERNELDIR)/include
> > > 
> > >  flatfiles = test/access.flat test/irq.flat test/sieve.flat 
> > > test/simple.flat test/stringio.flat test/memtest1.flat
> > > +
> > > +include config-x86-common.mak
> > 
> > I think you're clobbering flatfiles in config-x86-common.mak .
> 
> PATCH 2 moves all the rest of the flatfile rules to
> config-x86-common.mak. So nothing gets clobbered.

But THIS patch clobbers it.

> > Philosophically, I don't think that targets like "all" should be moved
> > into arch-specific makefiles. Also, the kvmctl and libkvm.a targets
> > should both be in the common Makefile.
> 
> So "all" is going to be different for everyone. Since all the test are
> not common, and all will not use flat files.
> 
> Also kvmctl ad libkvm.a will be diffrenent for everyone. But this could
> also be made into a variable. With new split code (soon to be coming to
> a kvm-devel list near you). Here is an example of how it will look
> later. The names may change but you get the idea.
> 
> Examples x86:
>    kvmctl: kvmctl-x86.o kvmctl.o main-x86.o main.o
> 
>    libkvm.a: kvmctl.o kvmctl-x86.o
> 
>    This split may also grow more .. as maybe the apic stuff will get
> moved to it's own file.
> 
> 
> Example Powerpc:
>    kvmctl: kvmctl-powerpc.o kvmctl.o main.o main-x86.o
> 
> 
> Now one way could be is to create a variable in the arch specific
> makefiles for kvmctl & libkvm . So that for x86  you woud have
> 
> KVMCTL= kvmctl-x86.o kvmctl.o main-x86.o main.o
> 
> Then in the main Makefile.
> 
> kvmctl: $(KVMCTL)

Exactly: that way we can ensure that every arch builds a common set of
targets.

> I personally think having the declaration in each arch makes things less
> confusing.

I can't tell if you're agreeing or if you forgot a negative. I agree
that each arch should define e.g. "kvmctl_objs".

-- 
Hollis Blanchard
IBM Linux Technology Center


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