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From: | Stefan Weil |
Subject: | Re: [Qemu-devel] [PATCH 03/12] Switch build system to accompanied kernel headers |
Date: | Thu, 23 Jun 2011 07:37:03 +0200 |
User-agent: | Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.2.17) Gecko/20110424 Thunderbird/3.1.10 |
Am 22.06.2011 23:37, schrieb Jan Kiszka:
On 2011-06-22 22:51, Stefan Weil wrote:If not, kvm="yes" should be restricted to platforms with kvm support. Otherwise, QEMU builds will fail very early: ERROR: Host kernel lacks signalfd() support, but KVM depends on it when the IO thread is disabled. Of course, users of those non-kvm platforms can set --disable-kvm, but I don't think that is the correct solution. Even with kvm disabled, builds still fail for non-kvm systems: In file included from /qemu/hw/kvmclock.c:21: /qemu/linux-headers/linux/kvm_para.h:26:26: warning: asm/kvm_para.h: No such file or directoryThat indicates symlink emulation under Windows does not support directories. Can you confirm this (check what <builddir>/linux-headers/asm became)? Then we would have to link all files in the arch header dir individually. Jan
Even when cross compiling for w32 (on a linux host), kvmclock.c does not compile: $ LANG=C make CFLAGS=-g CC i386-softmmu/kvmclock.o In file included from /home/stefan/src/qemu/savannah/qemu/hw/kvmclock.c:20:/home/stefan/src/qemu/savannah/qemu/linux-headers/linux/kvm.h:10:25: warning: linux/types.h: No such file or directory /home/stefan/src/qemu/savannah/qemu/linux-headers/linux/kvm.h:12:25: warning: linux/ioctl.h: No such file or directory In file included from /home/stefan/src/qemu/savannah/qemu/linux-headers/linux/kvm.h:13,
from /home/stefan/src/qemu/savannah/qemu/hw/kvmclock.c:20:../linux-headers/asm/kvm.h:32: error: expected specifier-qualifier-list before '__u32' ../linux-headers/asm/kvm.h:41: error: expected specifier-qualifier-list before '__u8' ../linux-headers/asm/kvm.h:61: error: expected specifier-qualifier-list before '__u64'
Is kvmclock.c really needed for non-kvm platforms? Or does it simply need a obj-i386-$(CONFIG_KVM) in Makefile.target? Stefan
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