[Buildroot] [git commit] czmq: unbreak static linking
peter at korsgaard.com
Tue May 12 22:02:22 UTC 2015
>>>>> "Thomas" == Thomas Petazzoni <thomas.petazzoni at free-electrons.com> writes:
>> I agree that it would be better if we could get this kind of fixes
>> upstream. I don't know how receptive upstream will be as this doesn't
>> affect "normal people" though.
> Well, upstream zeromq should be able to accept patches making their .pc
> file more correct.
>> That is arguable correct, but things are a bit more complicated as:
>> - libzerozmq is written in C++ and uses libstdc++ but exposes a C api
>> - czmq is a higher level wrapper also written in C
>> - Test program (czmq_selftest) is a C program linking against libczmq
>> (and in term libzeromq)
> Right, but that still doesn't answer whether using gcc to link a
> C program against a C++ library is correct or not :-)
I believe it is. How are people using E.G. libczmq to know that they
need to link with g++ just because a library libczmq uses happens to use
>> > * Or using gcc to link with a C++ library is correct, and in this
>> > case, libzmq.pc should be fixed to include -lstdc++ in Libs.private.
>> While this is correct, it is not directly related to this. Czmq doesn't
>> use its own .pc file to know how to link the selftest program.
> I'm not talking about fixing the czmq .pc file, but the zeromq one. If
> zeromq uses C++, then its .pc file should have -lstdc++, no?
Ahh, now I get it. Yes, fixing libzmq.pc to have a Libs.privat: -lstdc++
should also work.
I'll give it a try.
czmq seems to be missing a dependency on host-pkgconf though.
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