Re: systemtap 1.8 build fails

[Jiri Slaby <jslaby at suse dot cz>]

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On 06/20/2012 12:50 PM, Mark Wielaard wrote:
> On Tue, 2012-06-19 at 22:50 +0200, Jiri Slaby wrote:
>> I have to add the pthread lib to be linked with stap_serverd to
>> be able to build systemtap. Like in this diff: 
>> https://build.opensuse.org/package/view_file?file=link-with-pthread.patch&package=systemtap&project=devel%3Atools&rev=257b076be8a17310ddf6787741dae3c3
>>
>>
>> 
Otherwise a build error occurs:
>> CXXLD  stap-serverd .../ld: stap_serverd-stap-serverd.o:
>> undefined reference to symbol 'sem_getvalue@@GLIBC_2.2.5' .../ld:
>> note: 'sem_getvalue@@GLIBC_2.2.5' is defined in DSO 
>> /lib64/libpthread.so.0 so try adding it to the linker command
>> line /lib64/libpthread.so.0: could not read symbols: Invalid
>> operation collect2: error: ld returned 1 exit status
>> 
>> This is because sem_getvalue needs -lpthread, according to the
>> man page.
> 
> You are right. It is better to add that explicitly since we are
> using sem_getvalue explicitly in our own code. But normally
> nss_LIBS will include that flag. Did something change so that
> linking against nss doesn't include that anymore? If nss isn't
> available stap-serverd shouldn't be build.

nss no longer produces -lpthread here (it used to):
$ pkg-config --libs nss
- -lssl3 -lsmime3 -lnss3 -lnssutil3 -lplds4 -lplc4 -lnspr4

> I added the following. Hopefully similar to what you did (the above
> URL doesn't work for me).

Yes, it's exactly what I did.

thanks,
- -- 
js
suse labs
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