[Slackbuilds-users] Jack-rack make failure

x80 x80 at telus.net
Tue Mar 13 19:37:46 UTC 2018

On 03/13/2018 11:21 AM, B Watson wrote:
> On 3/13/18, x80 <x80 at telus.net> wrote:
>> ld returns an odd error "jack_rack-midi.o: undefined reference to symbol
>> 'pthread_create@@GLIBC_2.2.5'
>> /lib64/libpthread.so.0: error adding symbols: DSO missing from command
>> line"
>> This is on a fully updated 14.2 box. I see no errors in the configure
>> log and all lib paths are ok.
>> I'm not quite sure how to get past this one.
> Hm. The 2nd error message usually means "-lpthread" is missing,
> during linking.
> It builds fine on my fully-updated 64-bit 14.2 box...
> Check the file /usr/lib64/pkgconfig/jack.pc and see if has a line
> like this:
> Libs: -L${libdir} -ljack -lpthread
> Also, it's just occurred to me... are you using jack-audio-connection-kit
> (AKA jack-0.125.0), or jack2 (AKA jack2-1.9.10)? I just recently took
> over maintenance of jack2, but haven't done anything with it yet.
Yes it's jack2.
The Libs line in jack.pc looks like this:

Libs: -L/usr/lib64 -ljack

Seems it wasn't compiled with pthreads. I wonder if it's not a corrupt lib?

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