Re: [Xen-devel] [PATCH] tools: generate systemd service files only when systemd is available

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Tue, Jan 20, 2015 at 12:07:48PM +0000, Wei Liu wrote:
> On Tue, Jan 20, 2015 at 11:58:43AM +0000, Ian Campbell wrote:
> > On Tue, 2015-01-20 at 11:47 +0000, Wei Liu wrote:
> > > Though that's not in any way harmful but it is on the other hand not
> > > very useful.
> > 
> > It's not 100% clear in the docs that you can call this macro twice, but
> > it definitely doesn't say you can't so I'd assume it was OK:
> > Acked-by: Ian Campbell <ian.campbell@xxxxxxxxxx>
> > 
> 
> I tested this patch and it worked. There is similar usage in glibc
> configure.ac.
> 

And FYI

https://www.gnu.org/software/automake/manual/html_node/Requirements.html

contains snippets that call AC_CONFIG_FILES more than once.

So it is officially legal to do that! :-)

Wei.

> Wei.
> 
> > > 
> > > Please rerun autogen.sh after applying this patch.
> > > 
> > > Signed-off-by: Wei Liu <wei.liu2@xxxxxxxxxx>
> > > Cc: Ian Campbell <ian.campbell@xxxxxxxxxx>
> > > Cc: Ian Jackson <ian.jackson@xxxxxxxxxxxxx>
> > > ---
> > >  tools/configure.ac | 26 ++++++++++++++++----------
> > >  1 file changed, 16 insertions(+), 10 deletions(-)
> > > 
> > > diff --git a/tools/configure.ac b/tools/configure.ac
> > > index 113285d..850ba23 100644
> > > --- a/tools/configure.ac
> > > +++ b/tools/configure.ac
> > > @@ -12,16 +12,6 @@ hotplug/Linux/init.d/sysconfig.xencommons
> > >  hotplug/Linux/init.d/xen-watchdog
> > >  hotplug/Linux/init.d/xencommons
> > >  hotplug/Linux/init.d/xendomains
> > > -hotplug/Linux/systemd/proc-xen.mount
> > > -hotplug/Linux/systemd/var-lib-xenstored.mount
> > > -hotplug/Linux/systemd/xen-init-dom0.service
> > > -hotplug/Linux/systemd/xen-qemu-dom0-disk-backend.service
> > > -hotplug/Linux/systemd/xen-watchdog.service
> > > -hotplug/Linux/systemd/xenconsoled.service
> > > -hotplug/Linux/systemd/xendomains.service
> > > -hotplug/Linux/systemd/xenstored.service
> > > -hotplug/Linux/systemd/xenstored.socket
> > > -hotplug/Linux/systemd/xenstored_ro.socket
> > >  hotplug/Linux/vif-setup
> > >  hotplug/Linux/xen-backend.rules
> > >  hotplug/Linux/xen-hotplug-common.sh
> > > @@ -386,5 +376,21 @@ AC_SUBST(LIBNL3_CFLAGS)
> > >  fi # ! $rump
> > >  
> > >  AX_AVAILABLE_SYSTEMD()
> > > +
> > > +AS_IF([test "x$systemd" = "xy"], [
> > > +    AC_CONFIG_FILES([
> > > +    hotplug/Linux/systemd/proc-xen.mount
> > > +    hotplug/Linux/systemd/var-lib-xenstored.mount
> > > +    hotplug/Linux/systemd/xen-init-dom0.service
> > > +    hotplug/Linux/systemd/xen-qemu-dom0-disk-backend.service
> > > +    hotplug/Linux/systemd/xen-watchdog.service
> > > +    hotplug/Linux/systemd/xenconsoled.service
> > > +    hotplug/Linux/systemd/xendomains.service
> > > +    hotplug/Linux/systemd/xenstored.service
> > > +    hotplug/Linux/systemd/xenstored.socket
> > > +    hotplug/Linux/systemd/xenstored_ro.socket
> > > +    ])
> > > +])
> > > +
> > >  AC_OUTPUT()
> > >  
> > 

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