Date: Sat, 27 Sep 2014 11:36:21 +0300 From: Konstantin Belousov <kostikbel@gmail.com> To: Guillaume Friloux <guillaume@friloux.me> Cc: freebsd-threads@freebsd.org Subject: Re: Segfault from libthr.so. Message-ID: <20140927083621.GJ8870@kib.kiev.ua> In-Reply-To: <20140927065556.GH7885@Jetdail> References: <20140926150001.GF7885@Jetdail> <20140926164306.GE8870@kib.kiev.ua> <20140927065556.GH7885@Jetdail>
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On Sat, Sep 27, 2014 at 08:55:56AM +0200, Guillaume Friloux wrote: > On 14/09/26, Konstantin Belousov wrote: > > So, what is the problem, from your PoV ? > > Linking libssp after libthr causes libssp constructors run before > > libthr initialization, which causes the behaviour you see. The libssp > > uses something which is interposed by libthr, but still not ready at > > the libssp init time. Your example of linking with different order > > demostrates you the right way to treat libthr. > > > > So again, what is the problem ? > > Sorry to disturb you again, but i would have more access to your knowledge. > I understand what you say, but in my case, it disturbs me a little. > > Lets take this project as example : https://github.com/gfriloux/botman > > As you can see, it uses an m4 macro that will force link to ssp (configure.ac:38). > Later on, deps will be declared (configure.ac:87). One of those deps is eina. > Eina will declare -lpthread from its .pc file. > > And this is how i get to the state of having -lssp -lpthread. So this is right order. > In my app, i dont directly start any thread, lower libs do. So it doesnt seem > logical to add -lpthread before declaring the deps. > So should i just remove this m4 macro that seems to be use on quite some projects, > so it works on BSD ? > > What is the best way to do it, in your opinion ? Just put -lpthread last in the command line (automake variable) for linker. This should work portable on all systems I know.
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