there was a similar problem with the kvm 32-bit makefile at some point, the fix looks ok to me. -Christoffer On Wed, Apr 3, 2013 at 4:28 PM, Geoff Levand <geoff@xxxxxxxxxxxxx> wrote: > Hi Michal, > > I was building Marc's kvm development kernel outside of the > sources (make O=), and I got the following build error: > > arch/arm64/kvm/../../../arch/arm/kvm/mmio.c: fatal error: opening dependency file arch/arm64/kvm/../../../arch/arm/kvm/.mmio.o.d: No such file or directory > > The cause was that kbuild did not create the output directory > arch/arm64/kvm/../../../arch/arm/kvm, and so gcc failed. > > Here is what was in his makefile: > > obj-$(CONFIG_KVM_ARM_HOST) += $(addprefix ../../../virt/kvm/, kvm_main.o coalesced_mmio.o) > > I changed this to build a composite and kbuild then created > the output directories: > > obj-$(CONFIG_KVM_ARM_HOST) += kvm.o > kvm-$(CONFIG_KVM_ARM_HOST) += $(addprefix ../../../virt/kvm/, kvm_main.o coalesced_mmio.o) > > I guess kbuild used some other rules and saw the dependency on > the output directory. > > So, my questions are: > > Is it expected that the original rule should fail? > Is my fix the correct way? > Can I use some other way to get those output directories created? > > Just FYI, the original source is here: > > https://git.kernel.org/cgit/linux/kernel/git/maz/arm-platforms.git/tree/arch/arm64/kvm/Makefile?h=kvm-arm64/kvm-for-next > > Thanks for your help. > > -Geoff > > > > _______________________________________________ > kvmarm mailing list > kvmarm@xxxxxxxxxxxxxxxxxxxxx > https://lists.cs.columbia.edu/cucslists/listinfo/kvmarm -- To unsubscribe from this list: send the line "unsubscribe linux-kbuild" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
