Re: [Xen-users] trouble with building latest xen code

[Aastha Mehta <aasthakm@xxxxxxxxx>]

Hello

On 18 February 2014 16:09, Ian Campbell <Ian.Campbell@xxxxxxxxxx> wrote:
> On Thu, 2014-02-13 at 15:48 +0100, Aastha Mehta wrote:
>> Hello,
>>
>> I am trying to build the latest xen code from the git branch and I am
>> seeing errors in building the tools.
>>
>> gcc    -pthread -o xl xl.o xl_cmdimpl.o xl_cmdtable.o xl_sxp.o
>> libxlutil.so 
>> /home/aasthakm/workspace/ibc/source/xen/tools/libxl/../../tools/libxl/libxenlight.so
>> -Wl,-rpath-link=/home/aasthakm/workspace/ibc/source/xen/tools/libxl/../../tools/libxc
>> -Wl,-rpath-link=/home/aasthakm/workspace/ibc/source/xen/tools/libxl/../../tools/xenstore
>> -Wl,-rpath-link=/home/aasthakm/workspace/ibc/source/xen/tools/libxl/../../tools/blktap2/control
>> /home/aasthakm/workspace/ibc/source/xen/tools/libxl/../../tools/libxc/libxenctrl.so
>> -lyajl
>> xl_cmdimpl.o: In function `libxl_yajl_gen_alloc':
>> /home/workspace/ibc/source/xen/tools/libxl/libxl_json.h:60: undefined
>> reference to `yajl_gen_config'
>> /home/workspace/ibc/source/xen/tools/libxl/libxl_json.h:60: undefined
>> reference to `yajl_gen_config'
>> /home/workspace/ibc/source/xen/tools/libxl/../../tools/libxl/libxenlight.so:
>> undefined reference to `yajl_complete_parse'
>> collect2: ld returned 1 exit status
>> make[3]: *** [xl] Error 1
>> make[3]: Leaving directory `/home/workspace/ibc/source/xen/tools/libxl'
>> make[2]: *** [subdir-install-libxl] Error 2
>> make[2]: Leaving directory `/home/workspace/ibc/source/xen/tools'
>> make[1]: *** [subdirs-install] Error 2
>> make[1]: Leaving directory `/home/workspace/ibc/source/xen/tools'
>> make: *** [install-tools] Error 2
>>
>> I did install yajl:
>>
>> # locate yajl
>> /usr/lib/x86_64-linux-gnu/libyajl.so.1
>> /usr/lib/x86_64-linux-gnu/libyajl.so.1.0.12
>
> Do you also have libyajl.so somewhere?
>
> Does it contain the symbols which are being complained about?
>
>> I also noticed a message earlier in the compile log:
>> "Disabling libtool due to broken toolchain support"
>
> For us to know if that is relevant we'd need to know more about your
> toolchain/distro.
>
> Ian.
>>
>> Could someone let me know how to fix this problem?
>>
>> Thanks in advance,
>> Aastha
>>
>> _______________________________________________
>> Xen-users mailing list
>> Xen-users@xxxxxxxxxxxxx
>> http://lists.xen.org/xen-users
>
>

I just figured out the problem. While building the Xen code, I blindly
used all the dependencies listed on
http://wiki.xen.org/wiki/Compiling_Xen_From_Source and used apt-get to
install libyajl-dev. Looks like apt-cache has older version of the
library available. Even though I later installed the latest yajl from
the github, the default library being used was the older version. I
uninstalled the older version and then re-installed the latest and
everything works now.

Thanks,
Aastha.

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