[ltt-dev] UST 0.3 released

[Pierre-Marc Fournier]

Hi,

Since __sync_sub_and_fetch_4 is not called in libust, liburcu or
libkcompat, it would help to know how it ended up being referenced.
Could you dig a bit, perhaps by searching in the disassembly of your
libust.so to find in what function it is referenced?

Thanks.

pmf

Thirumalai wrote:
> Hi,
> I compiled for x86 processor. and since it is fedora core 9. gcc version is
> 4.3 i believe. My linux box is containing a quad core processor with 4GB
> ram.
> 
> Regards,
> Thirumalai
> 
> 
> 
> ----- Original Message ----- From: "Pierre-Marc Fournier"
> <pierre-marc.fournier at polymtl.ca>
> To: "Thirumalai" <thirumalai.p at datapatterns.co.in>
> Cc: <ltt-dev at lists.casi.polymtl.ca>
> Sent: Tuesday, March 02, 2010 10:03 PM
> Subject: Re: [ltt-dev] UST 0.3 released
> 
> 
>> Hi,
>>
>> What gcc version are you using and for what architecture are you
>> compiling?
>>
>> pmf
>>
>> Thirumalai wrote:
>>> Hi,
>>>    Yea. can you just tell me when this error will occur. when i searched
>>> for this error on net i.e ": undefined reference to
>>> `__sync_sub_and_fetch_4'" it is giving me some compiler options need to
>>> be mentioned. But even we mentioned that option, the problem persists.
>>>
>>> Regards,
>>> T.
>>>
>>> ----- Original Message ----- From: "Pierre-Marc Fournier"
>>> <pierre-marc.fournier at polymtl.ca>
>>> To: "Thirumalai" <thirumalai.p at datapatterns.co.in>
>>> Cc: <ltt-dev at lists.casi.polymtl.ca>
>>> Sent: Tuesday, March 02, 2010 9:33 PM
>>> Subject: Re: [ltt-dev] UST 0.3 released
>>>
>>>
>>>> Hi,
>>>>
>>>> Thirumalai wrote:
>>>>> Hi "Pierre-Marc Fournier",
>>>>>        we are new to userspace tracer. Just we have downloaded the
>>>>> packages and try to use the tracer for our systems. But we end up with
>>>>> following error messages when compiling ust-0.3.
>>>>>
>>>>> [root at itd210 ust-0.3]# make
>>>>> make  all-recursive
>>>>> make[1]: Entering directory `/home/UST/ust-0.3'
>>>>> Making all in snprintf
>>>>> make[2]: Entering directory `/home/UST/ust-0.3/snprintf'
>>>>> make[2]: Nothing to be done for `all'.
>>>>> make[2]: Leaving directory `/home/UST/ust-0.3/snprintf'
>>>>> Making all in libust
>>>>> make[2]: Entering directory `/home/UST/ust-0.3/libust'
>>>>> make[2]: Nothing to be done for `all'.
>>>>> make[2]: Leaving directory `/home/UST/ust-0.3/libust'
>>>>> Making all in .
>>>>> make[2]: Entering directory `/home/UST/ust-0.3'
>>>>> make[2]: Nothing to be done for `all-am'.
>>>>> make[2]: Leaving directory `/home/UST/ust-0.3'
>>>>> Making all in tests
>>>>> make[2]: Entering directory `/home/UST/ust-0.3/tests'
>>>>> Making all in hello
>>>>> make[3]: Entering directory `/home/UST/ust-0.3/tests/hello'
>>>>> /bin/sh ../../libtool --tag=CC   --mode=link gcc  -g -O2   -o hello
>>>>> hello.o tp.o ../../libust/libust.la ../../libust-initializer.o
>>>>> -lurcu-bp
>>>>> gcc -g -O2 -o .libs/hello hello.o tp.o ../../libust-initializer.o
>>>>> ../../libust/.libs/libust.so -lurcu-bp  -Wl,--rpath -Wl,/usr/local/lib
>>>>> ../../libust/.libs/libust.so: undefined reference to
>>>>> `__sync_val_compare_and_swap_4'
>>>>> ../../libust/.libs/libust.so: undefined reference to
>>>>> `__sync_sub_and_fetch_4'
>>>>> collect2: ld returned 1 exit status
>>>>> make[3]: *** [hello] Error 1
>>>>> make[3]: Leaving directory `/home/UST/ust-0.3/tests/hello'
>>>>> make[2]: *** [all-recursive] Error 1
>>>>> make[2]: Leaving directory `/home/UST/ust-0.3/tests'
>>>>> make[1]: *** [all-recursive] Error 1
>>>>> make[1]: Leaving directory `/home/UST/ust-0.3'
>>>>> make: *** [all] Error 2
>>>>> [root at itd210 ust-0.3]#
>>>>>
>>>>>
>>>>>
>>>>> Compiling envrioment :
>>>>>                    We are using fedora core-9 distribution for
>>>>> compilation of this. We installed the packages as per the README.
>>>>>
>>>>>                    First installed libkcompat-0.1 then
>>>>> usrspace-rcu-0.4.1 then ust-0.3.
>>>>>
>>>>> Tell us what went wrong.
>>>>
>>>> Are you sure you are using userspace-rcu 0.4.1? If I grep through the
>>>> whole git history, I see the symbols you are mentionning appear only
>>>> after 0.4.1...
>>>>
>>>> pmf
>>>
>>>
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