[Click] linking issues

[Roman Chertov]

Yes, it is set to 1

#define HAVE_LINUX_ASM_ALTERNATIVE_H 1

Just in case this matters I have Xeon CPUs

Roman



Eddie Kohler wrote:
> Does your include/click/config-linuxmodule.h define 
> HAVE_LINUX_ASM_ALTERNATIVE_H ?
> 
> Eddie
> 
> 
> Roman Chertov wrote:
>> Hello,
>>  I just did git pull, make clean, configure opts, make and got same 
>> warnings as before.
>>
>> Roman
>>
>> Eddie Kohler wrote:
>>> I have checked in a potential fix to this linking issue.  Can people 
>>> test it to see if it works?  Also please test a package, such as 
>>> etc/samplepackage, to see if that compiles.
>>>
>>> Thanks Adam especially.
>>> Eddie
>>>
>>>
>>> Eddie Kohler wrote:
>>>> Later versions of Linux appear to apply some funky code rewriting to 
>>>> SMP locks.  The SMP LOCK_PREFIX compiles to not only the "lock" 
>>>> instruction, but also a special reference in the ".smp_locks" 
>>>> section that points to that instruction.  When running on a 
>>>> uniprocessor, Linux will dynamically replace that "lock" byte with 
>>>> some sort of noop.
>>>>
>>>> Probably the solution is for Click to replace Linux's LOCK_PREFIX 
>>>> with its own version for its own code.
>>>>
>>>> Eddie
>>>>
>>>>
>>>> Adam Greenhalgh wrote:
>>>>> linux-2.6.19.2/include/asm-x86_64/alternative.h line 120 ish... is
>>>>> what we think is causing this . I think there is an i386 version too.
>>>>>
>>>>> Adam
>>>>>
>>>>> On 9/14/07, Eddie Kohler <kohler at cs.ucla.edu> wrote:
>>>>>> I just do not get this message ever.
>>>>>>
>>>>>> Help!!
>>>>>>
>>>>>> Eddie
>>>>>>
>>>>>>
>>>>>> Roman Chertov wrote:
>>>>>>> Hi Eddie,
>>>>>>>     I now seem to get the warning all the time.  I also tried to 
>>>>>>> build
>>>>>>> with --with-linux=/lib/modules/2.6.19/build and I got the same 
>>>>>>> result. I
>>>>>>> did the usual ./configure opts, make clean, make sequence.
>>>>>>>
>>>>>>> Roman
>>>>>>>
>>>>>>> Eddie Kohler wrote:
>>>>>>>> Hi Roman,
>>>>>>>>
>>>>>>>> How frustrating that you only get the warnings sometimes!
>>>>>>>>
>>>>>>>> So my ./configure line refers to a Linux build tree under
>>>>>>>> /lib/modules.  Have you tried a --with-linux line like that?  e.g.
>>>>>>>> --with-linux=/lib/modules/2.6.19.2-whatever/build ?
>>>>>>>>
>>>>>>>> Eddie
>>>>>>>>
>>>>>>>>
>>>>>>>> rchertov at purdue.edu wrote:
>>>>>>>>> Quoting Eddie Kohler <kohler at cs.ucla.edu>:
>>>>>>>>>
>>>>>>>>>> Hi Roman,
>>>>>>>>>>
>>>>>>>>>> I should have resolved this last night by adding Linux's 
>>>>>>>>>> $(CPPFLAGS)
>>>>>>>>>> to the link line; at least it worked for Adam.  Are you at HEAD?
>>>>>>>>>> (git pull)  Have you "make clean"ed?
>>>>>>>>> Just did the git pull, make clean, and make and got the warnings.
>>>>>>>>> Although
>>>>>>>>> sometimes I don't get them.
>>>>>>>>>
>>>>>>>>> This is my config line just in case.
>>>>>>>>> ./configure --prefix=/home/rchertov/ \
>>>>>>>>> --with-linux=/scratch/rchertov/linux-2.6.19.2/ \
>>>>>>>>> --enable-intel-cpu --enable-multithread=8 \
>>>>>>>>> --disable-userlevel --enable-experimental
>>>>>>>>>
>>>>>>>>> Roman
>>>>>>>>>
>>>>>>>>>> E
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> rchertov at purdue.edu wrote:
>>>>>>>>>>> Hello,
>>>>>>>>>>>    I got the latest Click with git today and I am having some
>>>>>>>>>>> interesting
>>>>>>>>>>> messages during linking.  I am not too strong on linking but 
>>>>>>>>>>> these
>>>>>>>>>> messages
>>>>>>>>>>> imply that not all is well in the linking land.  Any idea 
>>>>>>>>>>> what this
>>>>>>>>>>> could
>>>>>>>>>> be?
>>>>>>>>>>>   CC [M] ksyms.o
>>>>>>>>>>>   LD [M]  /home/rchertov/click-1.6/linuxmodule/click.o
>>>>>>>>>>>   LD [M]  /home/rchertov/click-1.6/linuxmodule/proclikefs.o
>>>>>>>>>>> ld: `.gnu.linkonce.t._ZN19ContextErrorHandlerD1Ev' referenced in
>>>>>>>>>>> section
>>>>>>>>>>> `.smp_locks' of 
>>>>>>>>>>> /home/rchertov/click-1.6/linuxmodule/confparse.o:
>>>>>>>>>>> defined
>>>>>>>>>> in
>>>>>>>>>>> discarded section 
>>>>>>>>>>> `.gnu.linkonce.t._ZN19ContextErrorHandlerD1Ev' of
>>>>>>>>>>> /home/rchertov/click-1.6/linuxmodule/confparse.o
>>>>>>>>>>>
>>>>>>>>>>> ld: `.gnu.linkonce.t._ZN6VectorI6StringED1Ev' referenced in 
>>>>>>>>>>> section
>>>>>>>>>> `.smp_locks'
>>>>>>>>>>> of /home/rchertov/click-1.6/linuxmodule/lexer.o: defined in 
>>>>>>>>>>> discarded
>>>>>>>>>> section
>>>>>>>>>>> `.gnu.linkonce.t._ZN6VectorI6StringED1Ev' of
>>>>>>>>>>> /home/rchertov/click-1.6/linuxmodule/lexer.o
>>>>>>>>>>>
>>>>>>>>>>>
>>>>>>>>>>> Thanks,
>>>>>>>>>>>
>>>>>>>>>>> Roman
>>>>>>>>>>> _______________________________________________
>>>>>>>>>>> click mailing list
>>>>>>>>>>> click at amsterdam.lcs.mit.edu
>>>>>>>>>>> https://amsterdam.lcs.mit.edu/mailman/listinfo/click
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>>
>