[Digikam-devel] Re: Cannot compile digikam: undefined reference to pthread lib

[Gilles Caulier]

Hi Gerhard,

2011/6/26 Gerhard Kulzer <gerhard at kulzer.net>

> Hello everybody,
> I've had a problem for the last couple of weeks, I can't compile digikam
> anymore:
>
> ...
> Scanning dependencies of target
> kipiplugin_gpssync
>
>

^^^ why gpssync here. libdng is only used in DNGConverter...


> [ 23%] /usr/bin/ld: ../../../../lib/liblibdng.a(dng_mutex.cpp.o): undefined
> reference to symbol 'pthread_key_delete@@GLIBC_2.2.5'
> /usr/bin/ld: note: 'pthread_key_delete@@GLIBC_2.2.5' is defined in DSO
> /lib/x86_64-linux-gnu/libpthread.so.0 so try adding it to the linker command
> line
> /lib/x86_64-linux-gnu/libpthread.so.0: could not read symbols: Invalid
> operation
> collect2: ld returned 1 exit status
> make[2]: *** [extra/kipi-plugins/dngconverter/test/raw2dng] Error 1
> make[1]: ***
> [extra/kipi-plugins/dngconverter/test/CMakeFiles/raw2dng.dir/all] Error 2
> ...
>
>
It sound like a mess in your local cmake configuration. Clean up all,
checkout software collection and recompile all from scratch.


> I tried to fix it by including -lpthread (or rather adding
> ${CMAKE_USE_PTHREADS_INIT} to the CmakeList.txt) as is proposed by various
> references I found on the web, but to no avail.
>
>
And DNG converter is already linked with Pthread.

Gilles
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