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Date: Mon, 9 May 2011 10:06:52 +0100
Message-ID: <BANLkTikrHj7SCHids+rvSb2Aw9TNinSNXg@mail.gmail.com>
From: Stefan Hajnoczi <stefanha@gmail.com>
To: Paolo Bonzini <pbonzini@redhat.com>
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Subject: Re: [Qemu-trivial] [PATCH 4/4] fix compilation when reconfiguring
 without dtrace backend
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On Mon, May 9, 2011 at 9:42 AM, Paolo Bonzini <pbonzini@redhat.com> wrote:
> On 05/09/2011 10:34 AM, Stefan Hajnoczi wrote:
>> Is there some smart change detection you are thinking about or just
>> something like keeping the old copy of config-host.h and friends to
>> see if they have changed?
>
> Just that, perhaps for both .h and .mak files. =A0Consider this very patc=
h; it
> is plausible that switching to another tracing backend does not change th=
e
> .h files, right now the backend is only present in .h files to enable the
> monitor/cmdline interfaces.

Hmm...I was wrong when I said that just deleting .d files is enough.
If ./configure is run *and* an arbitrary header file was changed then
stale .o files will be used.  So we also need to delete .o files on
./configure.

Stefan