Re: [Xen-devel] Build problem: note: 'xtl_createlogger_stdiostream' is defined in DSO .. so try adding it to the linker command line... libxenctrl.so.4.0: could not read symbols: Invalid operation

[Ian Campbell <Ian.Campbell@xxxxxxxxxxxxx>]

On Tue, 2011-03-22 at 17:16 +0000, Konrad Rzeszutek Wilk wrote:
> On Mon, Mar 21, 2011 at 03:53:25PM +0000, Ian Campbell wrote:
> > On Mon, 2011-03-21 at 14:53 +0000, Ian Jackson wrote:
> > > Ian Campbell writes ("Re: [Xen-devel] Build problem: note: 
> > > 'xtl_createlogger_stdiostream' is defined in DSO .. so try adding it to 
> > > the linker command line... libxenctrl.so.4.0: could not read symbols: 
> > > Invalid operation"):
> > > > xl: link against libxenctrl
> > > 
> > > I've applied this, thanks.  Although I don't understand why the build
> > > failed for Konrad and not me or my test system.
> > 
> > Me neither.
> 
> I am not sure either. Here is another with todays pull:
> 
> gcc    -o xl xl.o xl_cmdimpl.o xl_cmdtable.o libxlutil.so 
> -L/home/konrad/ssd/xtt/xen-unstable/tools/libxl/../../tools/libxl 
> -Wl,-rpath-link=/home/konrad/ssd/xtt/xen-unstable/tools/libxl/../../tools/libxc
>  
> -Wl,-rpath-link=/home/konrad/ssd/xtt/xen-unstable/tools/libxl/../../tools/xenstore
>  
> -Wl,-rpath-link=/home/konrad/ssd/xtt/xen-unstable/tools/libxl/../../tools/blktap2/control
>  -lxenlight -L/home/konrad/ssd/xtt/xen-unstable/tools/libxl/../../tools/libxc 
> -lxenctrl
> /usr/bin/ld: xl_cmdimpl.o: undefined reference to symbol 
> 'uuid_parse@@UUID_1.0'
> /usr/bin/ld: note: 'uuid_parse@@UUID_1.0' is defined in DSO 
> /lib64/libuuid.so.1 so try adding it to the linker command line
> /lib64/libuuid.so.1: could not read symbols: Invalid operation

This is due to the use of the uuid library being inlined in the libxl
headers, so the user of libxl can end up with linking requirements due
to libxl header internals. I think the right fix is to move these out of
line like I did with essentially the same thing in blktap2. I'll take a
look shortly.

Ian.
> 
> > 
> > > Perhaps the failure is only with -Wl,-as-needed ?
> > 
> > Possibly, although I did do test builds with that enabled (or at least I
> > thought I did...)
> > 
> > Ian.
> > 
> > 
> > 
> > _______________________________________________
> > Xen-devel mailing list
> > Xen-devel@xxxxxxxxxxxxxxxxxxx
> > http://lists.xensource.com/xen-devel



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